NPORT-EX 2 tiaa_NVG.htm

1

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

Portfolio

of

Investments

February

28,

2022

(Unaudited)

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

LONG-TERM

INVESTMENTS

-

165.0% 

(100.0%

of

Total

Investments)

X

5,101,754,708

MUNICIPAL

BONDS

-

163.5%

(99.1%

of

Total

Investments)

X

5,101,754,708

Alabama

-

2.0%

(1.2%

of

Total

Investments)

$

3,645

Alabama

Private

Colleges

and

University

Facilities

Authority,

Limited

Obligation

Bonds,

University

of

Mobile

Project,

Series

2015A,

6.000%,

9/01/45,

144A

9/25

at

100.00

N/R

$

3,778,188

5,000

Birmingham-Jefferson

Civic

Center

Authority,

Alabama,

Special

Tax

Bonds,

Series

2018A,

4.000%,

7/01/43

7/28

at

100.00

A-

5,066,100

22,755

Lower

Alabama

Gas

District,

Alabama,

Gas

Project

Revenue

Bonds,

Series

2016A,

5.000%,

9/01/46

No

Opt.

Call

A2

25,454,881

8,100

Mobile

Spring

Hill

College

Educational

Building

Authority,

Alabama,

Revenue

Bonds,

Spring

Hill

College

Project,

Series

2015,

5.875%,

4/15/45

4/25

at

100.00

N/R

8,299,422

The

Improvement

District

of

the

City

of

Mobile

-

McGowin

Park

Project,

Alabama,

Sales

Tax

Revenue

Bonds,

Series

2016A:

1,000

5.250%,

8/01/30

8/26

at

100.00

N/R

983,070

1,300

5.500%,

8/01/35

8/26

at

100.00

N/R

1,265,420

Tuscaloosa

County

Industrial

Development

Authority,

Alabama,

Gulf

Opportunity

Zone

Bonds,

Hunt

Refining

Project,

Refunding

Series

2019A:

3,205

4.500%,

5/01/32,

144A

5/29

at

100.00

N/R

2,999,327

4,220

5.250%,

5/01/44,

144A

5/29

at

100.00

N/R

4,009,760

11,900

UAB

Medicine

Finance

Authority,

Alabama,

Revenue

Bonds,

Series

2019B,

4.000%,

9/01/44

9/29

at

100.00

AA-

12,010,432

61,125

Total

Alabama

63,866,600

Alaska

-

0.6%

(0.4%

of

Total

Investments)

Northern

Tobacco

Securitization

Corporation,

Alaska,

Tobacco

Settlement

Asset-Backed

Bonds,

Senior

Series

2021A

Class

1:

4,490

4.000%,

6/01/41

6/31

at

100.00

A-

4,476,305

8,100

4.000%,

6/01/50

6/31

at

100.00

BBB+

7,694,757

1,220

Northern

Tobacco

Securitization

Corporation,

Alaska,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2021B-1

Class

2,

4.000%,

6/01/50

6/31

at

100.00

BBB-

1,259,504

35,615

Northern

Tobacco

Securitization

Corporation,

Alaska,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2021B-2

Class

2,

0.010%,

6/01/66

6/31

at

30.73

N/R

4,748,904

49,425

Total

Alaska

18,179,470

Arizona

-

2.3%

(1.4%

of

Total

Investments)

1,475

Arizona

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Basis

Schools,

Inc.

Projects,

Series

2017D,

5.000%,

7/01/47,

144A

7/27

at

100.00

BB

1,481,298

6,290

Arizona

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Academies

of

Math

&

Science

Projects,

Series

2019,

5.000%,

7/01/54,

144A

7/29

at

100.00

BB

6,220,433

3,260

Arizona

Industrial

Development

Authority,

Education

Facility

Revenue

Bonds,

Caurus

Academy

Project,

Series

2018A,

6.375%,

6/01/39,

144A

6/28

at

100.00

N/R

3,443,538

3,142

Cahava

Springs

Revitalization

District,

Cave

Creek,

Arizona,

Special

Assessment

Bonds,

Series

2017A,

7.000%,

7/01/41,

144A

2021

960240

(4)

7/27

at

100.00

N/R

2,419,491

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

2

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Arizona

(continued)

$

4,885

Glendale

Industrial

Development

Authority,

Arizona,

Senior

Living

Revenue

Bonds,

Royal

Oaks

Royal

Oaks

-

Inspirata

Pointe

Project,

Series

2020A,

5.000%,

5/15/56

5/26

at

103.00

BBB-

$

4,885,147

1,350

Maricopa

County

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Legacy

Traditional

Schools

Projects,

Series

2021A,

4.000%,

7/01/56,

144A

7/31

at

100.00

N/R

1,126,696

Maricopa

County

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Legacy

Traditional

Schools

Projects,

Taxable

Series

2019B:

1,730

5.000%,

7/01/49,

144A

7/29

at

100.00

Ba2

1,760,240

1,975

5.000%,

7/01/54,

144A

7/29

at

100.00

Ba2

1,997,910

800

Maricopa

County

Industrial

Development

Authority,

Arizona,

Education

Revenue

Bonds,

Reid

Traditional

School

Projects,

Series

2016,

5.000%,

7/01/47

7/26

at

100.00

Baa3

823,024

Phoenix

Civic

Improvement

Corporation,

Arizona,

Revenue

Bonds,

Civic

Plaza

Expansion

Project,

Series

2005B:

6,000

5.500%,

7/01/37

-

FGIC

Insured

No

Opt.

Call

AA

7,586,220

8,755

5.500%,

7/01/39

-

FGIC

Insured

No

Opt.

Call

AA

11,136,097

Phoenix

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Basis

Schools,

Inc.

Projects,

Series

2016A:

620

5.000%,

7/01/35,

144A

7/25

at

100.00

BB

627,676

1,025

5.000%,

7/01/46,

144A

7/25

at

100.00

BB

1,030,740

2,040

Phoenix

Industrial

Development

Authority,

Arizona,

Multifamily

Housing

Revenue

Bonds,

Deer

Valley

Veterans

Assisted

Living

Project,

Series

2016A,

5.125%,

7/01/36

7/24

at

101.00

N/R

1,701,625

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Edkey

Charter

Schools

Project,

Series

2016:

1,130

5.250%,

7/01/36

7/26

at

100.00

BB-

1,144,634

1,850

5.375%,

7/01/46

7/26

at

100.00

BB-

1,862,321

2,135

5.500%,

7/01/51

7/26

at

100.00

BB-

2,157,588

2,920

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

Edkey

Charter

Schools

Project,

Series

2019,

5.875%,

7/01/51,

144A

7/26

at

103.00

N/R

3,042,815

885

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

San

Tan

Montessori

School

Project,

Series

2016,

6.500%,

2/01/48,

144A

2/24

at

100.00

N/R

901,488

3,050

Pima

County

Industrial

Development

Authority,

Arizona,

Education

Facility

Revenue

Bonds,

San

Tan

Montessori

School

Project,

Series

2017,

6.750%,

2/01/50,

144A

2/28

at

100.00

N/R

3,230,224

Salt

Verde

Financial

Corporation,

Arizona,

Senior

Gas

Revenue

Bonds,

Citigroup

Energy

Inc

Prepay

Contract

Obligations,

Series

2007:

6,820

5.000%,

12/01/32

No

Opt.

Call

BBB+

7,559,152

2,465

5.000%,

12/01/37

No

Opt.

Call

BBB+

2,733,660

2,000

Yavapai

County

Industrial

Development

Authority,

Arizona,

Hospital

Revenue

Bonds,

Yavapai

Regional

Medical

Center,

Series

2013A,

5.250%,

8/01/33

8/23

at

100.00

A2

2,066,000

66,602

Total

Arizona

70,938,017

3

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Arkansas

-

0.3%

(0.2%

of

Total

Investments)

Arkansas

Development

Finance

Authority,

Tobacco

Settlement

Revenue

Bonds,

Arkansas

Cancer

Research

Center

Project,

Series

2006:

$

2,635

0.000%,

7/01/36

-

AMBAC

Insured

No

Opt.

Call

Aa2

$

1,531,277

20,480

0.000%,

7/01/46

-

AMBAC

Insured

No

Opt.

Call

Aa2

6,940,877

23,115

Total

Arkansas

8,472,154

California

-

13.1%

(8.0%

of

Total

Investments)

6,135

Alhambra

Unified

School

District,

Los

Angeles

County,

California,

General

Obligation

Bonds,

Capital

Appreciation

Series

2009B,

0.010%,

8/01/30

-

AGC

Insured

No

Opt.

Call

AA

4,885,423

Anaheim

Public

Financing

Authority,

California,

Lease

Revenue

Bonds,

Public

Improvement

Project,

Series

1997C:

5,795

0.000%,

9/01/35

-

AGM

Insured

No

Opt.

Call

AA

3,591,973

6,820

0.000%,

9/01/35

-

AGM

Insured,

(ETM)

No

Opt.

Call

AA

(5)

4,578,266

4,100

Antelope

Valley

Healthcare

District,

California,

Revenue

Bonds,

Series

2016A,

5.000%,

3/01/41

3/26

at

100.00

Ba3

4,205,903

3,875

Bakersfield

City

School

District,

Kern

County,

California,

General

Obligation

Bonds,

Election

2016

Series

2022C,

2.500%,

11/01/46

-

BAM

Insured

11/31

at

100.00

N/R

2,959,415

5,000

Bay

Area

Toll

Authority,

California,

Revenue

Bonds,

San

Francisco

Bay

Area

Toll

Bridge,

Series

2013S-4,

5.000%,

4/01/38,

(Pre-refunded

4/01/23)

4/23

at

100.00

A1

(5)

5,115,400

7,325

California

Community

Housing

Agency,

California,

Essential

Housing

Revenue

Bonds,

Fountains

at

Emerald

Park,

Senior

Lien

Series

2021A-1,

3.000%,

8/01/56,

144A

8/31

at

100.00

N/R

5,556,745

2,000

California

Community

Housing

Agency,

California,

Essential

Housing

Revenue

Bonds,

Summit

at

Sausalito

Apartments,

Series

2021A-1,

3.000%,

2/01/57,

144A

8/32

at

100.00

N/R

1,514,120

1,430

California

County

Tobacco

Securitization

Agency,

Tobacco

Settlement

Asset-Backed

Bonds,

Los

Angeles

County

Securitization

Corporation,

Series

2020A,

4.000%,

6/01/49

6/30

at

100.00

BBB+

1,355,468

455

California

County

Tobacco

Securitization

Agency,

Tobacco

Settlement

Asset-Backed

Bonds,

Los

Angeles

County

Securitization

Corporation,

Series

2020B-1,

5.000%,

6/01/49

6/30

at

100.00

BBB-

476,572

50,460

California

County

Tobacco

Securitization

Agency,

Tobacco

Settlement

Asset-Backed

Bonds,

Los

Angeles

County

Securitization

Corporation,

Series

2020B-2,

0.010%,

6/01/55

6/30

at

26.72

N/R

9,391,111

22,965

California

Educational

Facilities

Authority,

Revenue

Bonds,

Stanford

University

Series

2016U-7,

5.000%,

6/01/46,

(UB)

(6)

No

Opt.

Call

AAA

29,190,123

15,850

California

Educational

Facilities

Authority,

Revenue

Bonds,

Stanford

University

Series

2019V-1,

5.000%,

5/01/49

No

Opt.

Call

AAA

20,251,228

1,600

California

Health

Facilities

Financing

Authority,

Revenue

Bonds,

Saint

Joseph

Health

System,

Series

2013A,

5.000%,

7/01/37,

(Pre-refunded

7/01/23)

7/23

at

100.00

AA-

(5)

1,650,144

6,665

California

Health

Facilities

Financing

Authority,

Revenue

Bonds,

Stanford

Hospitals

and

Clinics,

Series

2015A,

5.000%,

8/15/54,

(UB)

(6)

8/25

at

100.00

AA-

7,029,509

5,000

California

Health

Facilities

Financing

Authority,

Revenue

Bonds,

Sutter

Health,

Series

2013A,

5.000%,

8/15/52,

(Pre-refunded

8/15/23)

8/23

at

100.00

A

(5)

5,171,700

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

4

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

California

(continued)

California

Municipal

Finance

Authority,

Charter

School

Revenue

Bonds,

Palmdale

Aerospace

Academy

Project,

Series

2016A:

$

3,065

5.000%,

7/01/31,

144A

7/26

at

100.00

BB

$

3,132,553

1,000

5.000%,

7/01/36,

144A

7/26

at

100.00

BB

1,015,210

555

5.000%,

7/01/41,

144A

7/26

at

100.00

BB

560,272

195

5.000%,

7/01/46,

144A

7/26

at

100.00

BB

195,954

California

Municipal

Finance

Authority,

Education

Revenue

Bonds,  American

Heritage

Foundation

Project,

Series

2016A:

260

5.000%,

6/01/36

6/26

at

100.00

BBB-

270,787

435

5.000%,

6/01/46

6/26

at

100.00

BBB-

446,689

1,610

California

Municipal

Finance

Authority,

Revenue

Bonds,

Community

Health

System,

Series

2021A,

4.000%,

2/01/51

2/32

at

100.00

N/R

1,603,190

3,000

California

Municipal

Finance

Authority,

Revenue

Bonds,

Simpson

University,

Series

2020A,

6.000%,

10/01/50,

144A

10/27

at

103.00

N/R

3,213,360

5,425

California

Pollution

Control

Financing

Authority,

Water

Furnishing

Revenue

Bonds,

San

Diego

County

Water

Authoriity

Desalination

Project

Pipeline,

Refunding

Series

2019,

5.000%,

11/21/45,

144A

1/29

at

100.00

Baa3

5,666,575

2,050

California

Public

Finance

Authority,

Revenue

Bonds,

Henry

Mayo

Newhall

Hospital,

Series

2017,

5.000%,

10/15/47

10/26

at

100.00

BBB-

2,120,130

735

California

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Downtown

College

Prep

-

Obligated

Group,

Series

2016,

5.000%,

6/01/46,

144A

6/26

at

100.00

N/R

737,484

715

California

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Rocketship

Education

Obligated

Group,

Series

2016A,

5.000%,

6/01/36,

144A

6/25

at

100.00

N/R

734,105

570

California

School

Finance

Authority,

Charter

School

Revenue

Bonds,

Rocketship

Education

Obligated

Group,

Series

2017A,

5.125%,

6/01/47,

144A

6/26

at

100.00

N/R

582,369

80

California

State,

General

Obligation

Bonds,

Series

2002,

5.000%,

10/01/32

-

NPFG

Insured

8/22

at

100.00

AA-

80,165

5

California

State,

General

Obligation

Bonds,

Series

2004,

5.000%,

4/01/31

-

AMBAC

Insured

8/22

at

100.00

AA-

5,011

12,710

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2014A,

5.500%,

12/01/54

12/24

at

100.00

BB-

12,993,560

66,005

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2016A,

5.250%,

12/01/56,

144A

6/26

at

100.00

BB-

66,733,695

10,130

California

Statewide

Communities

Development

Authority,

California,

Revenue

Bonds,

Loma

Linda

University

Medical

Center,

Series

2018A,

5.500%,

12/01/58,

144A

6/28

at

100.00

BB-

10,393,886

4,000

California

Statewide

Communities

Development

Authority,

Revenue

Bonds,

Huntington

Memorial

Hospital,

Refunding

Series

2014B,

4.000%,

7/01/39,

(Pre-refunded

7/01/24)

7/24

at

100.00

A-

(5)

4,180,160

California

Statewide

Community

Development

Authority,

Revenue

Bonds,

Daughters

of

Charity

Health

System,

Series

2005A:

53

5.750%,

7/01/30

(4),(7)

9/22

at

100.00

N/R

53,555

155

5.750%,

7/01/35

2035

2035

(4),(7)

9/22

at

100.00

N/R

154,561

5,000

Clovis

Unified

School

District,

Fresno

County,

California,

General

Obligation

Bonds,

Series

2001A,

0.000%,

8/01/25

-

FGIC

Insured,

(ETM)

No

Opt.

Call

Baa2

(5)

4,722,150

5

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

California

(continued)

$

5,330

CMFA

Special

Finance

Agency

VII,

California,

Essential

Housing

Revenue

Bonds,

Senior

Lien

Series

2021A-1,

3.000%,

8/01/56,

144A

8/31

at

100.00

N/R

$

4,043,338

3,410

Coachella

Valley

Unified

School

District,

Riverside

County,

California,

General

Obligation

Bonds,

Election

2005

Series

2010C,

0.000%,

8/01/33

-

AGM

Insured

No

Opt.

Call

A1

2,329,576

14,375

Corona-Norco

Unified

School

District,

Riverside

County,

California,

General

Obligation

Bonds,

Capital

Appreciation,

Election

2006

Refunding

Series

2009C,

0.000%,

8/01/39

-

AGM

Insured

No

Opt.

Call

Aa3

7,220,562

2,000

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

777

Place-Pomona,

Senior

Lien

Series

2021A-1,

3.600%,

5/01/47,

144A

5/32

at

100.00

N/R

1,693,060

5,000

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Escondido

Portfolio,

Social

Senior

Lien

Series

2021A-2,

4.000%,

6/01/58,

144A

6/31

at

100.00

N/R

4,326,300

4,750

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Moda

at

Monrovia

Station,

Social

Series

2021A-1,

3.400%,

10/01/46,

144A

10/31

at

100.00

N/R

3,966,297

20,985

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Monterrey

Station

Apartments,

Senior

Lien

Series

2021A-1,

3.125%,

7/01/56,

144A

7/32

at

100.00

N/R

15,154,947

5,000

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Pasadena

Portfolio

Social

Bond,

Series

2021A-2,

3.000%,

12/01/56

12/31

at

100.00

N/R

3,787,650

2,475

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Vineyard

Gardens

Apartments,

Senior

Lien

Series

2021A,

3.250%,

10/01/58,

144A

4/32

at

100.00

N/R

1,839,841

12,500

CSCDA

Community

Improvement

Authority,

California,

Essential

Housing

Revenue

Bonds,

Wood

Creek

Apartments,

Mezzanine

Lien

Series

2021A-2,

4.000%,

12/01/58

6/32

at

100.00

N/R

10,433,125

El

Rancho

Unified

School

District,

Los

Angeles

County,

California,

General

Obligation

Bonds,

Election

2010

Series

2011A:

2,615

0.000%,

8/01/31

-

AGM

Insured

(8)

8/28

at

100.00

A1

3,033,635

3,600

0.000%,

8/01/34

-

AGM

Insured

(8)

8/28

at

100.00

A1

4,153,752

Foothill/Eastern

Transportation

Corridor

Agency,

California,

Toll

Road

Revenue

Bonds,

Refunding

Senior

Lien

Series

2015A:

3,960

0.000%,

1/15/34

-

AGM

Insured

No

Opt.

Call

BBB

2,652,368

5,000

0.010%,

1/15/35

-

AGM

Insured

No

Opt.

Call

BBB

3,203,400

Foothill/Eastern

Transportation

Corridor

Agency,

California,

Toll

Road

Revenue

Bonds,

Refunding

Series

2013A:

910

0.000%,

1/15/42

(8)

1/31

at

100.00

Baa2

1,007,297

6,610

6.000%,

1/15/49,

(Pre-refunded

1/15/24)

1/24

at

100.00

Baa2

(5)

7,027,289

4,445

Foothill/Eastern

Transportation

Corridor

Agency,

California,

Toll

Road

Revenue

Bonds,

Refunding

Term

Rate

Sub-Series

2013B-1,

3.500%,

1/15/53

7/29

at

100.00

Baa2

3,963,473

23,290

Golden

State

Tobacco

Securitization

Corporation,

California,

Tobacco

Settlement

Asset-Backed

Bonds,

Capital

Appreciation

Series

2021B-2,

0.000%,

6/01/66

12/31

at

27.75

N/R

2,975,297

Kern

Community

College

District,

California,

General

Obligation

Bonds,

Safety,

Repair

&

Improvement,

Election

2002

Series

2006:

5,600

0.000%,

11/01/24

-

AGM

Insured

No

Opt.

Call

AA

5,352,704

5,795

0.000%,

11/01/25

-

AGM

Insured

No

Opt.

Call

AA

5,379,846

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

6

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

California

(continued)

$

1,090

Lincoln

Public

Financing

Authority,

Placer

County,

California,

Twelve

Bridges

Limited

Obligation

Revenue

Bonds,

Refunding

Series

2011A,

4.375%,

9/02/25

-

AGM

Insured

8/22

at

100.00

AA

$

1,092,147

7,575

Mount

San

Antonio

Community

College

District,

Los

Angeles

County,

California,

General

Obligation

Bonds,

Election

of

2008,

Series

2013A,

0.000%,

8/01/43

(8)

8/35

at

100.00

AA

7,137,241

3,310

M-S-R

Energy

Authority,

California,

Gas

Revenue

Bonds,

Citigroup

Prepay

Contracts,

Series

2009B,

6.500%,

11/01/39

No

Opt.

Call

BBB+

4,192,016

Oceanside

Unified

School

District,

San

Diego

County,

California,

General

Obligation

Bonds,

Capital

Appreciation,

2008

Election

Series

2009A:

4,500

0.000%,

8/01/26

-

AGC

Insured

No

Opt.

Call

N/R

4,123,305

605

0.000%,

8/01/26

-

AGC

Insured,

(ETM)

No

Opt.

Call

Aa3

(5)

558,536

530

0.000%,

8/01/26

-

AGC

Insured,

(ETM)

No

Opt.

Call

Aa3

(5)

489,296

270

0.000%,

8/01/26

-

AGC

Insured,

(ETM)

No

Opt.

Call

N/R

(5)

249,264

225

0.000%,

8/01/28

-

AGC

Insured,

(ETM)

No

Opt.

Call

Aa3

(5)

196,729

1,885

0.000%,

8/01/28

-

AGC

Insured

No

Opt.

Call

N/R

1,627,754

110

0.000%,

8/01/28

-

AGC

Insured,

(ETM)

No

Opt.

Call

N/R

(5)

96,178

525

Ontario

Redevelopment

Financing

Authority,

San

Bernardino

County,

California,

Revenue

Bonds,

Redevelopment

Project

1,

Series

1993,

5.850%,

8/01/22

-

NPFG

Insured,

(ETM)

8/22

at

100.00

N/R

(5)

525,000

3,905

Orange

County,

California,

Special

Tax

Bonds,

Community

Facilities

District

2015-1

Esencia

Village,

Series

2015A,

4.250%,

8/15/38

8/25

at

100.00

N/R

3,942,371

Palo

Alto,

California,

Certificates

of

Participation,

Public

Safety

Building,

Series

2021:

2,560

2.000%,

11/01/42

11/30

at

100.00

AA+

1,896,730

1,940

2.125%,

11/01/44

11/30

at

100.00

AA+

1,428,519

3,700

Palomar

Pomerado

Health,

California,

General

Obligation

Bonds,

Capital

Appreciation,

Election

of

2004,

Series

2007A,

0.000%,

8/01/25

-

NPFG

Insured

No

Opt.

Call

BBB-

3,467,529

7,935

Palomar

Pomerado

Health,

California,

General

Obligation

Bonds,

Series

2009A,

7.000%,

8/01/38

-

AGC

Insured

8/29

at

100.00

BBB-

9,524,460

9,145

Pittsburg

Redevelopment

Agency,

California,

Tax

Allocation

Bonds,

Los

Medanos

Community

Development

Project,

Series

1999,

0.000%,

8/01/30

-

AMBAC

Insured

No

Opt.

Call

A

7,253,723

670

Riverside

County

Transportation

Commission,

California,

Toll

Revenue

Senior

Lien

Bonds,

Series

2013A,

5.750%,

6/01/48,

(Pre-refunded

6/01/23)

6/23

at

100.00

BBB+

(5)

693,859

San

Clemente,

California,

Special

Tax

Revenue

Bonds,

Community

Facilities

District

2006-1

Marblehead

Coastal,

Series

2015:

480

5.000%,

9/01/40

9/25

at

100.00

N/R

498,686

905

5.000%,

9/01/46

9/25

at

100.00

N/R

935,173

4,000

San

Francisco

Airports

Commission,

California,

Revenue

Bonds,

San

Francisco

International

Airport,

Governmental

Purpose,

Second

Series

2013B,

5.000%,

5/01/43

5/23

at

100.00

A

4,060,920

San

Joaquin

Hills

Transportation

Corridor

Agency,

Orange

County,

California,

Toll

Road

Revenue

Bonds,

Refunding

Senior

Lien

Series

2014A:

2,680

5.000%,

1/15/44,

(Pre-refunded

1/15/25)

1/25

at

100.00

BBB

(5)

2,893,409

8,275

5.000%,

1/15/50,

(Pre-refunded

1/15/25)

1/25

at

100.00

BBB

(5)

8,933,938

7,210

San

Joaquin

Hills

Transportation

Corridor

Agency,

Orange

County,

California,

Toll

Road

Revenue

Bonds,

Refunding

Series

1997A,

0.000%,

1/15/23

-

NPFG

Insured

No

Opt.

Call

Baa2

7,115,621

7

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

California

(continued)

$

3,400

San

Mateo

County

Community

College

District,

California,

General

Obligation

Bonds,

Series

2006C,

0.000%,

9/01/30

-

NPFG

Insured

No

Opt.

Call

AAA

$

2,769,402

4,340

San

Ysidro

School

District,

San

Diego

County,

California,

General

Obligation

Bonds,

1997

Election

Series

2012G,

0.000%,

8/01/34

-

AGM

Insured

No

Opt.

Call

AA

2,815,228

5,690

San

Ysidro

School

District,

San

Diego

County,

California,

General

Obligation

Bonds,

Refunding

Series

2015,

0.000%,

8/01/42

8/25

at

41.10

A3

2,118,159

Santa

Ana

Financing

Authority,

California,

Lease

Revenue

Bonds,

Police

Administration

and

Housing

Facility,

Series

1994A:

2,455

6.250%,

7/01/24,

(ETM)

No

Opt.

Call

Baa2

(5)

2,614,379

2,455

6.250%,

7/01/24

No

Opt.

Call

Baa2

2,610,352

3,500

Saugus

Union

School

District,

Los

Angeles

County,

California,

General

Obligation

Bonds,

Series

2006,

0.000%,

8/01/23

-

FGIC

Insured

No

Opt.

Call

A+

3,435,530

610

Temecula

Public

Financing

Authority,

California,

Special

Tax

Bonds,

Community

Facilities

District

16-01,

Series

2017,

6.250%,

9/01/47,

144A

9/27

at

100.00

N/R

642,306

497,358

Total

California

410,000,038

Colorado

-

10.7%

(6.5%

of

Total

Investments)

4,300

Aerotropolis

Regional

Transportation

Authority,

Colorado,

Special

Revenue

Bonds,

Series

2021,

4.375%,

12/01/52

12/26

at

103.00

N/R

3,623,137

850

Aviation

Station

North

Metropolitan

District

2,

Denver

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Refunding

&

Improvement

Series

2019A,

5.000%,

12/01/39

9/24

at

103.00

N/R

844,670

Base

Village

Metropolitan

District

2,

Colorado,

General

Obligation

Bonds,

Refunding

Series

2016A:

883

5.500%,

12/01/36

8/22

at

103.00

N/R

899,132

1,175

5.750%,

12/01/46

8/22

at

103.00

N/R

1,193,471

700

Brighton

Crossing

Metropolitan

District

4,

Colorado,

General

Obligation

Bonds,

Limited

Tax

Convertible

to

Unlimited

Tax,

Series

2017A,

5.000%,

12/01/47

12/22

at

103.00

N/R

702,758

3,410

Canyons

Metropolitan

District

5,

Douglas

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Refunding

&

Improvement

Series

2017A,

6.125%,

12/01/47

12/22

at

103.00

N/R

3,439,701

1,690

Canyons

Metropolitan

District

6,

Douglas

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Refunding

&

Improvement

Series

2017A,

6.125%,

12/01/47

12/22

at

103.00

N/R

1,704,720

Centerra

Metropolitan

District

1,

Loveland,

Colorado,

Special

Revenue

Bonds,

Refunding

&

Improvement

Series

2017:

1,140

5.000%,

12/01/37,

144A

12/22

at

103.00

N/R

1,149,884

5,465

5.000%,

12/01/47,

144A

12/22

at

103.00

N/R

5,471,558

1,475

Centerra

Metropolitan

District

1,

Loveland,

Colorado,

Special

Revenue

Bonds,

Refunding

&

Improvement

Series

2020A,

5.000%,

12/01/51

12/25

at

103.00

N/R

1,409,525

195

Central

Platte

Valley

Metropolitan

District,

Colorado,

General

Obligation

Bonds,

Refunding

Series

2014,

5.000%,

12/01/43,

(Pre-refunded

12/01/23)

12/23

at

100.00

BB

(5)

203,436

1,200

Clear

Creek

Station

Metropolitan

District

2,

Adams

County,

Colorado,

Limited

Tax

General

Obligation

Refunding

&

Improvement

Series

2017A,

5.000%,

12/01/47

12/22

at

103.00

N/R

1,200,036

930

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

Flagstaff

Academy

Project,

Refunding

Series

2016,

3.625%,

8/01/46

8/26

at

100.00

A+

835,187

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

8

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

$

1,165

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

The

Classical

Academy

Project,

Refunding

Series

2015A,

5.000%,

12/01/38

12/24

at

100.00

A+

$

1,209,503

3,675

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

Vanguard

School

Project,

Refunding

&

Improvement

Series

2016,

3.750%,

6/15/47

6/26

at

100.00

A+

3,489,890

1,750

Colorado

Educational

and

Cultural

Facilities

Authority,

Charter

School

Revenue

Bonds,

Weld

County

School

District

6

-

Frontier

Academy,

Refunding

&

Improvement

Series

2016,

3.250%,

6/01/46

6/26

at

100.00

A+

1,539,422

Colorado

Health

Facilities

Authority,

Colorado,

Health

Facilities

Revenue

Bonds,

The

Evangelical

Lutheran

Good

Samaritan

Society

Project,

Refunding

Series

2017:

2,460

5.000%,

6/01/42,

(Pre-refunded

6/01/27)

6/27

at

100.00

N/R

(5)

2,794,511

23,470

5.000%,

6/01/47,

(Pre-refunded

6/01/27)

6/27

at

100.00

N/R

(5)

26,661,450

11,520

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Catholic

Health

Initiatives,

Series

2013A,

5.250%,

1/01/45,

(Pre-refunded

1/01/23)

1/23

at

100.00

BBB+

(5)

11,687,616

5,655

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

CommonSpirit

Health,

Series

2019A-2,

4.000%,

8/01/49

8/29

at

100.00

BBB+

5,492,023

4,900

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Covenant

Living

Communities

&

Services,

Series

2020A,

4.000%,

12/01/50

12/27

at

103.00

A-

4,500,062

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Covenant

Retirement

Communities

Inc.,

Refunding

Series

2012B:

1,640

5.000%,

12/01/22,

(ETM)

No

Opt.

Call

A-

(5)

1,658,942

2,895

5.000%,

12/01/23,

(Pre-refunded

12/01/22)

12/22

at

100.00

A-

(5)

2,928,437

4,200

5.000%,

12/01/24,

(Pre-refunded

12/01/22)

12/22

at

100.00

A-

(5)

4,248,510

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Evangelical

Lutheran

Good

Samaritan

Society

Project,

Series

2013:

765

5.500%,

6/01/33,

(Pre-refunded

6/01/23)

6/23

at

100.00

N/R

(5)

789,633

1,575

5.625%,

6/01/43,

(Pre-refunded

6/01/23)

6/23

at

100.00

N/R

(5)

1,627,337

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Evangelical

Lutheran

Good

Samaritan

Society

Project,

Series

2013A:

1,410

5.000%,

6/01/32,

(Pre-refunded

6/01/25)

6/25

at

100.00

N/R

(5)

1,531,330

2,000

5.000%,

6/01/33,

(Pre-refunded

6/01/25)

6/25

at

100.00

N/R

(5)

2,172,100

5,870

5.000%,

6/01/40,

(Pre-refunded

6/01/25)

6/25

at

100.00

N/R

(5)

6,375,114

6,920

5.000%,

6/01/45,

(Pre-refunded

6/01/25)

6/25

at

100.00

N/R

(5)

7,515,466

2,035

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Frasier

Meadows

Project,

Refunding

&

Improvement

Series

2017A,

5.250%,

5/15/47

5/27

at

100.00

BB+

2,064,019

5,000

Colorado

Health

Facilities

Authority,

Colorado,

Revenue

Bonds,

Intermountain

Healthcare,

Series

2022A,

4.000%,

5/15/52

(WI/DD,

Settling

8/01/22)

5/32

at

100.00

N/R

5,020,650

13,610

Colorado

Housing

and

Finance

Authority,

Multifamily

Project

Bonds,

Class

I

Series

2020B,

2.350%,

10/01/43

10/29

at

100.00

AAA

10,558,774

4,105

Colorado

International

Center

Metropolitan

District

14,

Denver,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Refunding

&

Improvement

Series

2018,

5.875%,

12/01/46

12/23

at

103.00

N/R

4,179,342

600

Copperleaf

Metropolitan

District

4,

Arapahoe

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Series

2020A,

5.000%,

12/01/49

3/25

at

103.00

N/R

592,902

9

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

$

1,480

Cornerstar

Metropolitan

District,

Arapahoe

County,

Colorado,

General

Obligation

Bonds,

Limited

Tax

Convertible

to

Unlimited

Tax,

Refunding

Series

2017A,

5.250%,

12/01/47

12/22

at

103.00

N/R

$

1,484,766

1,269

Cornerstar

Metropolitan

District,

Arapahoe

County,

Colorado,

General

Obligation

Bonds,

Limited

Tax

Convertible

to

Unlimited

Tax,

Refunding

Series

2017B,

5.250%,

12/01/47

12/22

at

103.00

N/R

1,271,969

500

Crystal

Crossing

Metropolitan

District,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Refunding

Series

2016,

5.250%,

12/01/40

12/25

at

100.00

N/R

507,245

10,640

Denver

City

and

County,

Colorado,

Airport

System

Revenue

Bonds,

Subordinate

Lien

Series

2013B,

5.000%,

11/15/43

11/23

at

100.00

A

10,917,066

505

Denver

Connection

West

Metropolitan

District,

City

and

County

of

Denver,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Convertible

to

Unlimited

Tax

Series

2017A,

5.375%,

8/01/47,

(Pre-refunded

12/01/22)

12/22

at

103.00

N/R

(5)

526,447

465

Denver

Urban

Renewal

Authority,

Colorado,

Tax

Increment

Revenue

Bonds,

9th

and

Colorado

Urban

Redevelopement

Area,

Series

2018A,

5.250%,

12/01/39,

144A

12/23

at

103.00

N/R

479,513

2,260

Denver

Urban

Renewal

Authority,

Colorado,

Tax

Increment

Revenue

Bonds,

9th

and

Colorado

Urban

Redevelopment

Area,

Series

2018A,

5.250%,

12/01/39,

144A

12/23

at

103.00

N/R

2,338,445

11,700

E-470

Public

Highway

Authority,

Colorado,

Senior

Revenue

Bonds,

Capital

Appreciation

Series

2010A,

0.000%,

9/01/41

No

Opt.

Call

A

5,210,946

E-470

Public

Highway

Authority,

Colorado,

Senior

Revenue

Bonds,

Series

1997B:

35,995

0.000%,

9/01/23

-

NPFG

Insured

No

Opt.

Call

A

35,159,916

6,525

0.000%,

9/01/26

-

NPFG

Insured

No

Opt.

Call

A

5,847,835

E-470

Public

Highway

Authority,

Colorado,

Senior

Revenue

Bonds,

Series

2000B:

17,030

0.010%,

9/01/25

-

NPFG

Insured

No

Opt.

Call

A

15,731,122

10,005

0.000%,

9/01/32

-

NPFG

Insured

No

Opt.

Call

A

7,032,914

43,090

0.000%,

9/01/33

-

NPFG

Insured

No

Opt.

Call

A

28,862,544

E-470

Public

Highway

Authority,

Colorado,

Toll

Revenue

Bonds,

Series

2004A:

20,000

0.000%,

9/01/27

-

NPFG

Insured

No

Opt.

Call

A

17,355,200

1,180

0.000%,

9/01/28

-

NPFG

Insured

No

Opt.

Call

A

984,037

7,000

0.000%,

9/01/34

-

NPFG

Insured

No

Opt.

Call

A

4,466,700

590

Foothills

Metropolitan

District,

Fort

Collins,

Colorado,

Special

Revenue

Bonds,

Series

2014,

6.000%,

12/01/38

12/24

at

100.00

N/R

576,743

700

Harmony

Technology

Park

Metropolitan

District

2,

Fort

Collins,

Colorado,

General

Obligaiton

Bonds,

Limited

Tax

Convertible

to

Unlimited

Tax

Series

2017,

5.000%,

9/01/47,

(Pre-refunded

12/01/22)

12/22

at

103.00

N/R

(5)

729,106

500

Iron

Mountain

Metropolitan

District

2,

Windsor,

Weld

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Refunding

&

Improvement

Series

2019A,

5.000%,

12/01/39

12/24

at

103.00

N/R

494,820

Lambertson

Farms

Metropolitan

District

1,

Colorado,

Revenue

Bonds,

Refunding

&

Improvement

Series

2015:

1,005

5.750%,

12/15/46

12/23

at

100.00

N/R

728,927

5,355

6.000%,

12/15/50

12/23

at

100.00

N/R

3,908,668

500

Littleton

Village

Metropolitan

District

No.

2,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Series

2015,

5.375%,

12/01/45

8/22

at

102.00

N/R

502,300

860

Mountain

Shadows

Metropolitan

District,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Refunding

Series

2016,

5.000%,

12/01/35

12/25

at

100.00

N/R

865,435

5,155

North

Range

Metropolitan

District

1,

Adams

County,

Colorado,

General

Obligation

Bonds,

Series

2016B,

3.500%,

12/01/45

12/25

at

100.00

A2

4,779,561

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

10

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

North

Range

Metropolitan

District

2,

Adams

County,

Colorado

,

Limited

Tax

General

Obligation

Bonds,

Refunding

Special

Revenue

&

Improvement

Series

2017A:

$

1,000

5.625%,

12/01/37

12/22

at

103.00

N/R

$

1,022,480

1,000

5.750%,

12/01/47

12/22

at

103.00

N/R

1,019,240

Painted

Prairie

Public

Improvement

Authority,

Aurora,

Colorado,

Special

Revenue

Bonds,

Series

2019:

3,380

5.000%,

12/01/39

12/24

at

103.00

N/R

3,426,340

6,900

5.000%,

12/01/49

12/24

at

103.00

N/R

6,910,005

Park

70

Metropolitan

District,

Aurora,

Colorado,

General

Obligation

Bonds,

Limited

Tax

Refunding

&

Improvement

Series

2016:

660

5.000%,

12/01/36

12/26

at

100.00

Baa3

692,327

1,060

5.000%,

12/01/46

12/26

at

100.00

Baa3

1,095,701

660

Park

Creek

Metropolitan

District,

Colorado,

Senior

Limited

Property

Tax

Supported

Revenue

Bonds,

Refunding

Series

2015A,

5.000%,

12/01/45

12/25

at

100.00

A

706,332

1,335

Peak

Metropolitan

District

1,

Colorado

Springs,

El

Paso

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2021A,

5.000%,

12/01/41,

144A

3/26

at

103.00

N/R

1,293,094

2,760

Prairie

Center

Metopolitan

District

No.

3,

In

the

City

of

Brighton,

Adams

County,

Colorado,

Limited

Property

Tax

Supported

Primary

Improvements

Revenue

Bonds,

Refunding

Series

2017A,

5.000%,

12/15/41,

144A

12/26

at

100.00

N/R

2,765,824

1,500

Rampart

Range

Metropolitan

District

5,

Lone

Tree,

Douglas

County,

Colorado,

Limited

Tax

Supported

and

Special

Revenue

Bonds,

Series

2021,

4.000%,

12/01/41

10/26

at

102.00

N/R

1,308,645

Reata

South

Metropolitan

District,

Douglas

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Refunding

Series

2018:

1,310

5.375%,

12/01/37

12/23

at

103.00

N/R

1,329,728

2,765

5.500%,

12/01/47

12/23

at

103.00

N/R

2,791,240

5,050

Regional

Transportation

District,

Colorado,

Private

Activity

Bonds,

Denver

Transit

Partners

Eagle

P3

Project,

Series

2020A,

3.000%,

7/15/37

1/31

at

100.00

Baa2

4,357,140

1,320

Riverwalk

Metropolitan

District

2,

Glendale,

Arapahoe

County,

Colorado,

Special

Revenue

Bonds,

Series

2022A,

5.000%,

12/01/52

3/27

at

103.00

N/R

1,223,046

930

SouthGlenn

Metropolitan

District,

Colorado,

Special

Revenue

Bonds,

Refunding

Series

2016,

5.000%,

12/01/46

8/22

at

103.00

N/R

928,633

1,000

St.

Vrain

Lakes

Metropolitan

District

No.

2,

Weld

County,

Colorado,

Limited

Tax

General

Obligation

Bonds,

Series

2017A,

5.000%,

12/01/37

12/22

at

103.00

N/R

1,013,690

STC

Metropolitan

District

2,

Superior,

Boulder

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Refunding

&

improvement

Series

2019A:

1,000

5.000%,

12/01/38

12/24

at

103.00

N/R

1,002,290

570

5.000%,

12/01/49

12/24

at

103.00

N/R

570,331

765

Sterling

Ranch

Community

Authority

Board,

Douglas

County,

Colorado,

Limited

Tax

Supported

District

2,

Refunding

&

Improvement

Senior

Series

2020A,

4.250%,

12/01/50

12/25

at

102.00

N/R

669,100

2,765

Sterling

Ranch

Metropolitan

District

1,

El

Paso

County,

Colorado,

General

Obligation

Limited

Tax

Bonds,

Series

2020,

5.125%,

12/01/50

12/25

at

103.00

N/R

2,670,631

500

The

Village

at

Dry

Creek

Metropolitan

District

No.

2,

In

the

City

of

Thornton,

Adams

County,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Series

2019,

4.375%,

12/01/44

9/24

at

103.00

N/R

458,215

11

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Colorado

(continued)

$

500

Transport

Metropolitan

District

3,

In

the

City

of

Aurora,

Adams

County,

Colorado,

General

Obligation

Limited

Bonds,

Convertible

Capital

Appreciation

Series

2021A-2,

0.000%,

12/01/51

(8)

3/26

at

103.00

N/R

$

422,230

900

Transport

Metropolitan

District

3,

In

the

City

of

Aurora,

Adams

County,

Colorado,

General

Obligation

Limited

Bonds,

Series

2021A-1,

5.000%,

12/01/51

3/26

at

103.00

N/R

861,264

8,500

University

of

Colorado

Hospital

Authority,

Colorado,

Revenue

Bonds,

Series

2012A,

5.000%,

11/15/42

11/22

at

100.00

Aa3

8,562,475

3,410

Vauxmont

Metropolitan

District,

Arvada,

Colorado,

Limited

Tax

General

Obligation

and

Special

Revenue

Bonds,

Convertible

to

Unlimited

Tax

Refunding

Subordinate

Series

2020,

5.000%,

12/01/50

-

AGM

Insured

12/29

at

100.00

AA

3,783,872

366,482

Total

Colorado

332,960,346

Connecticut

-

5.7%

(3.5%

of

Total

Investments)

Bridgeport,

Connecticut,

General

Obligation

Bonds,

Series

2014A:

2,345

5.000%,

7/01/32

-

AGM

Insured

7/24

at

100.00

A2

2,458,053

1,600

5.000%,

7/01/34

-

AGM

Insured

7/24

at

100.00

A2

1,671,632

2,800

Bridgeport,

Connecticut,

General

Obligation

Bonds,

Series

2016D,

5.000%,

8/15/41

-

AGM

Insured

8/26

at

100.00

A2

3,023,048

Bridgeport,

Connecticut,

General

Obligation

Bonds,

Series

2017A:

1,470

5.000%,

11/01/36

11/27

at

100.00

Baa1

1,610,267

750

5.000%,

11/01/37

11/27

at

100.00

Baa1

820,425

5,505

Connecticut

Health

and

Educational

Facilities

Authority

Revenue

Bonds,

Hartford

HealthCare,

Series

2015F,

5.000%,

7/01/45

7/25

at

100.00

A

5,689,693

3,750

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Connecticut

College,

Refunding

Series

2016L-1,

4.000%,

7/01/46

7/26

at

100.00

A2

3,751,088

1,100

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Duncaster,

Inc.,

Series

2014A,

5.000%,

8/01/44

8/24

at

100.00

BBB

1,118,788

5,570

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Fairfield

University,

Series

2016Q-1,

5.000%,

7/01/46

7/26

at

100.00

A-

5,829,116

500

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Hartford

HealthCare,

Series

2014E,

5.000%,

7/01/42

7/24

at

100.00

A

513,095

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Healthcare

Facility

Expansion

Church

Home

of

Hartford

Inc.

Project,

Series

2016A:

590

5.000%,

9/01/46,

144A

9/26

at

100.00

BB

593,216

740

5.000%,

9/01/53,

144A

9/26

at

100.00

BB

741,857

3,000

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Mary

Wade

Home

Issue,

Series

2019A-1,

5.000%,

10/01/54,

144A

10/24

at

104.00

BB

3,042,660

1,915

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Middlesex

Hospital,

Series

2015O,

5.000%,

7/01/36

7/25

at

100.00

A3

1,987,061

1,125

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Norwich

Free

Academy,

Series

2013B,

4.000%,

7/01/34,

(Pre-refunded

7/01/23)

7/23

at

100.00

A

(5)

1,149,671

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Nuvance

Health

Series

2019A:

1,100

4.000%,

7/01/41

7/29

at

100.00

Baa2

1,045,418

3,370

4.000%,

7/01/49

7/29

at

100.00

Baa2

3,164,026

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

12

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Connecticut

(continued)

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Quinnipiac

University,

Refunding

Series

2015L:

$

10,105

4.125%,

7/01/41

7/25

at

100.00

A-

$

10,157,243

7,030

5.000%,

7/01/45

7/25

at

100.00

A-

7,230,636

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Quinnipiac

University,

Series

2016M:

500

5.000%,

7/01/34

7/26

at

100.00

A-

532,355

1,250

5.000%,

7/01/36

7/26

at

100.00

A-

1,322,850

6,145

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Sacred

Heart

University,

Series

2017I-1,

5.000%,

7/01/42

7/27

at

100.00

A3

6,534,654

4,025

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Stamford

Hospital,

Series

2016K,

4.000%,

7/01/46

7/26

at

100.00

BBB+

3,839,246

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Trinity

Health

Credit

Group,

Series

2016CT:

2,650

5.000%,

12/01/41

6/26

at

100.00

AA-

2,819,149

770

5.000%,

12/01/45

6/26

at

100.00

AA-

816,077

2,250

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

University

of

New

Haven,

Series

2018K-1,

5.000%,

7/01/38

7/28

at

100.00

BBB-

2,305,193

Connecticut

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Yale-New

Haven

Health

Issue,

Series

2014E:

2,610

5.000%,

7/01/32

7/24

at

100.00

AA-

2,728,833

2,740

5.000%,

7/01/33

7/24

at

100.00

AA-

2,859,903

900

5.000%,

7/01/34

7/24

at

100.00

AA-

938,061

5,580

Connecticut

Health

and

Educational

Facilities

Authoroity,

Revneue

Bonds,

Connecticut

State

University

System,

Series

2013N,

5.000%,

11/01/31,

(Pre-refunded

11/01/23)

11/23

at

100.00

A+

(5)

5,814,248

Connecticut

Municipal

Electric

Energy

Cooperative,

Power

Supply

System

Revenue

Bonds,

Series

2013A:

4,540

5.000%,

1/01/32

1/23

at

100.00

N/R

4,588,623

625

5.000%,

1/01/32,

(Pre-refunded

1/01/23)

1/23

at

100.00

N/R

(5)

633,975

785

5.000%,

1/01/38,

(Pre-refunded

1/01/23)

1/23

at

100.00

N/R

(5)

796,273

840

5.000%,

1/01/38

1/23

at

100.00

N/R

847,896

3,500

Connecticut

State,

General

Obligation

Bonds,

Series

2014F,

5.000%,

11/15/34

11/24

at

100.00

A+

3,721,935

2,630

Connecticut

State,

General

Obligation

Bonds,

Series

2015F,

5.000%,

11/15/34

11/25

at

100.00

A+

2,845,476

3,750

Connecticut

State,

General

Obligation

Bonds,

Series

2017A,

5.000%,

4/15/35

4/27

at

100.00

A+

4,111,538

Connecticut

State,

General

Obligation

Bonds,

Series

2018A:

3,500

5.000%,

4/15/35,

(UB)

(6)

4/28

at

100.00

A

3,905,685

5,000

5.000%,

4/15/38,

(UB)

(6)

4/28

at

100.00

A

5,544,750

3,855

Connecticut

State,

Special

Tax

Obligation

Bonds,

Transportation

Infrastructure

Purposes

Series

2013A,

5.000%,

10/01/33

10/23

at

100.00

AA-

3,987,535

1,380

Connecticut

State,

Special

Tax

Obligation

Bonds,

Transportation

Infrastructure

Purposes

Series

2015A,

5.000%,

8/01/33

8/25

at

100.00

AA-

1,486,274

Connecticut

State,

Special

Tax

Obligation

Bonds,

Transportation

Infrastructure

Purposes

Series

2016A:

5,300

5.000%,

9/01/33

9/26

at

100.00

AA-

5,774,403

1,075

5.000%,

9/01/34

9/26

at

100.00

AA-

1,166,708

13

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Connecticut

(continued)

$

3,500

Connecticut

State,

Special

Tax

Obligation

Bonds,

Transportation

Infrastructure

Purposes,

Series

2014A,

5.000%,

9/01/33

9/24

at

100.00

AA-

$

3,706,990

Greater

New

Haven

Water

Pollution

Control

Authority,

Connecticut,

Regional

Wastewater

System

Revenue

Bonds,

Refunding

Series

2014B:

500

5.000%,

8/15/30,

(Pre-refunded

8/15/24)

8/24

at

100.00

A1

(5)

533,495

1,000

5.000%,

8/15/31,

(Pre-refunded

8/15/24)

8/24

at

100.00

A1

(5)

1,066,990

55

Greater

New

Haven

Water

Pollution

Control

Authority,

Connecticut,

Regional

Wastewater

System

Revenue

Bonds,

Series

2005A,

5.000%,

8/15/35

-

NPFG

Insured

8/22

at

100.00

A1

55,086

225

Hamden,

Connecticut,

General

Obligation

Bonds,

Series

2016,

5.000%,

8/15/32

-

BAM

Insured

8/24

at

100.00

AA

232,945

2,315

Harbor

Point

Infrastructure

Improvement

District,

Connecticut,

Special

Obligation

Revenue

Bonds,

Harbor

Point

Project,

Refunding

Series

2017,

5.000%,

4/01/39,

144A

4/27

at

100.00

N/R

2,428,504

10,015

Hartford

County

Metropolitan

District,

Connecticut,

Clean

Water

Project

Revenue

Bonds,

Refunding

Green

Bond

Series

2014A,

5.000%,

11/01/42,

(Pre-refunded

11/01/24)

11/24

at

100.00

AA-

(5)

10,749,600

2,285

Hartford

County

Metropolitan

District,

Connecticut,

General

Obligation

Bonds,

Series

2018,

5.000%,

7/15/36

7/28

at

100.00

Aa3

2,564,501

870

Hartford,

Connecticut,

General

Obligation

Bonds,

Series

2009A,

5.000%,

8/15/28

-

AGC

Insured

8/22

at

100.00

A1

871,958

Milford,

Connecticut,

General

Obligation

Bonds,

Series

2018:

1,055

4.000%,

11/01/36

11/24

at

100.00

AA+

1,071,532

1,055

4.000%,

11/01/37

11/24

at

100.00

AA+

1,069,707

1,550

New

Haven,

Connecticut,

General

Obligation

Bonds,

Refunding

Series

2016A,

5.000%,

8/15/35

-

AGM

Insured

8/26

at

100.00

BBB

1,677,488

985

New

Haven,

Connecticut,

General

Obligation

Bonds,

Series

2014A,

5.000%,

8/01/33,

(Pre-refunded

8/01/24)

-

AGM

Insured

8/24

at

100.00

BBB

(5)

1,048,749

New

Haven,

Connecticut,

General

Obligation

Bonds,

Series

2015:

790

5.000%,

9/01/32

-

AGM

Insured

9/25

at

100.00

BBB

847,765

1,620

5.000%,

9/01/33

-

AGM

Insured

9/25

at

100.00

BBB

1,732,379

500

5.000%,

9/01/35

-

AGM

Insured

9/25

at

100.00

BBB

531,780

New

Haven,

Connecticut,

General

Obligation

Bonds,

Series

2017A:

1,045

5.000%,

8/01/35

8/27

at

100.00

BBB

1,134,870

1,425

5.000%,

8/01/36

8/27

at

100.00

BBB

1,545,398

900

North

Haven,

Connecticut,

General

Obligation

Bonds,

Series

2006,

5.000%,

7/15/24

No

Opt.

Call

Aa1

956,880

795

South

Central

Connecticut

Regional

Water

Authority

Water

System

Revenue

Bonds,

Thirtieth

Series

2014A,

5.000%,

8/01/44,

(Pre-refunded

8/01/24)

8/24

at

100.00

AA-

(5)

847,263

South

Central

Connecticut

Regional

Water

Authority,

Water

System

Revenue

Bonds,

Refunding

Thirty-Second

Series

2016B:

2,715

4.000%,

8/01/36

8/26

at

100.00

AA-

2,792,459

2,220

5.000%,

8/01/37

8/26

at

100.00

AA-

2,400,952

500

Stamford,

Connecticut,

Water

Pollution

Control

System

and

Facility

Revenue

Bonds,

Series

2013A,

5.250%,

8/15/43

8/23

at

100.00

Aa2

514,030

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

14

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Connecticut

(continued)

Stamford,

Connecticut,

Water

Pollution

Control

System

and

Facility

Revenue

Bonds,

Series

2019:

$

200

4.000%,

4/01/37

4/29

at

100.00

AA+

$

207,712

250

4.000%,

4/01/38

4/29

at

100.00

AA+

259,748

1,285

Steel

Point

Infrastructure

Improvement

District,

Connecticut,

Special

Obligation

Revenue

Bonds,

Steelpointe

Harbor

Project,

Series

2021,

4.000%,

4/01/51

4/30

at

100.00

N/R

1,120,327

600

Stratford,

Connecticut,

General

Obligation

Bonds,

Series

2014,

5.000%,

12/15/32,

(Pre-refunded

12/15/22)

12/22

at

100.00

A2

(5)

607,866

1,500

Stratford,

Connecticut,

General

Obligation

Bonds,

Series

2017,

4.000%,

1/01/39

-

BAM

Insured

1/27

at

100.00

A2

1,525,095

1,000

Town

of

Hamden,

Connecticut,

General

Obligation

Bonds,

Refunding

Series

2018A,

5.000%,

8/15/30

-

BAM

Insured

8/28

at

100.00

BBB

1,118,360

2,500

University

of

Connecticut,

General

Obligation

Bonds,

Series

2013A,

5.000%,

8/15/32

8/23

at

100.00

A+

2,561,475

760

University

of

Connecticut,

General

Obligation

Bonds,

Series

2014A,

5.000%,

2/15/31

2/24

at

100.00

A+

790,172

2,250

University

of

Connecticut,

General

Obligation

Bonds,

Series

2015A,

5.000%,

3/15/31

3/26

at

100.00

A+

2,449,485

Waterbury,

Connecticut,

General

Obligation

Bonds,

Lot

A

Series

2015:

445

5.000%,

8/01/30

-

BAM

Insured

8/25

at

100.00

AA-

478,691

390

5.000%,

8/01/31

-

BAM

Insured

8/25

at

100.00

AA-

418,591

610

5.000%,

8/01/32

-

BAM

Insured

8/25

at

100.00

AA-

653,566

445

5.000%,

8/01/33

-

BAM

Insured

8/25

at

100.00

AA-

475,803

445

5.000%,

8/01/34

-

BAM

Insured

8/25

at

100.00

AA-

475,064

171,165

Total

Connecticut

179,041,909

Delaware

-

0.1%

(0.1%

of

Total

Investments)

Kent

County,

Delaware,

Student

Housing

&

Dining

Facility

Revenue

Bonds,

Collegiate

Housing

Foundation

-

Dover

LLC

Delaware

State

University

Project,

Series

2018A:

2,585

5.000%,

7/01/53

1/28

at

100.00

BB-

2,501,918

1,000

5.000%,

7/01/58

1/28

at

100.00

BB-

958,180

3,585

Total

Delaware

3,460,098

District

of

Columbia

-

3.5%

(2.1%

of

Total

Investments)

3,780

District

of

Columbia

Student

Dormitory

Revenue

Bonds,

Provident

Group

-

Howard

Properties

LLC

Issue,

Series

2013,

5.000%,

10/01/45

10/22

at

100.00

BB-

3,791,189

1,100

District

of

Columbia

Tobacco

Settlement

Corporation,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2001,

6.500%,

5/15/33

No

Opt.

Call

A-

1,147,168

186,000

District

of

Columbia

Tobacco

Settlement

Corporation,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2006A,

0.000%,

6/15/46

8/22

at

23.12

N/R

42,807,900

1,500

District

of

Columbia,

Washington,

D.C.,

Revenue

Bonds,

Ingleside

at

Rock

Creek

Project,

Series

2017A,

5.000%,

7/01/42

7/24

at

103.00

N/R

1,488,720

3,000

Metropolitan

Washington

Airports

Authority,

Virginia,

Dulles

Toll

Road

Revenue

Bonds,

Dulles

Metrorail

&

Capital

Improvement

Projects,

Refunding

First

Senior

Lien

Series

2019A,

5.000%,

10/01/44

10/28

at

100.00

A

3,291,240

Metropolitan

Washington

Airports

Authority,

Virginia,

Dulles

Toll

Road

Revenue

Bonds,

Dulles

Metrorail

&

Capital

Improvement

Projects,

Refunding

Second

Senior

Lien

Series

2022A:

2,710

4.000%,

10/01/52

-

AGM

Insured

10/31

at

100.00

N/R

2,714,471

17,615

2.750%,

10/01/53

-

AGM

Insured

10/31

at

100.00

N/R

13,029,287

19,900

3.000%,

10/01/53

-

AGM

Insured

10/31

at

100.00

N/R

16,286,956

15

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

District

of

Columbia

(continued)

$

11,000

Metropolitan

Washington

Airports

Authority,

Virginia,

Dulles

Toll

Road

Revenue

Bonds,

Dulles

Metrorail

&

Capital

improvement

Projects,

Second

Senior

Lien

Series

2009C,

6.500%,

10/01/41,

(Pre-refunded

10/01/26)

-

AGC

Insured

10/26

at

100.00

A3

(5)

$

13,070,970

10,000

Metropolitan

Washington

Airports

Authority,

Virginia,

Dulles

Toll

Road

Revenue

Bonds,

Dulles

Metrorail

Capital

Appreciation,

Second

Senior

Lien

Series

2010B,

6.500%,

10/01/44

10/28

at

100.00

Baa1

11,560,600

256,605

Total

District

of

Columbia

109,188,501

Florida

-

4.3%

(2.6%

of

Total

Investments)

990

Bexley

Community

Development

District,

Pasco

County,

Florida,

Special

Assessment

Revenue

Bonds,

Series

2016,

4.700%,

5/01/36

5/26

at

100.00

N/R

1,000,999

1,000

Capital

Trust

Agency,

Florida,

Educational

Facilities

Lease

Revenue

Bonds,

Franklin

Academy

Projects,

Series

2020,

5.000%,

12/15/50,

144A

7/26

at

100.00

N/R

992,440

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Babcock

Neighborhood

School

Inc,

Series

2018:

1,290

6.100%,

8/15/38,

144A

8/28

at

100.00

N/R

1,347,418

1,045

6.200%,

8/15/48,

144A

8/28

at

100.00

N/R

1,083,195

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Babcock

Neighborhood

School

Inc,

Series

2021:

1,290

4.000%,

8/15/51,

144A

8/28

at

100.00

N/R

992,500

1,250

4.250%,

8/15/61,

144A

8/28

at

100.00

N/R

956,425

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Odyssey

Charter

School

Project,

Series

2017A:

1,065

5.375%,

7/01/37,

144A

7/27

at

100.00

Ba1

1,108,005

1,470

5.500%,

7/01/47,

144A

7/27

at

100.00

Ba1

1,519,686

3,788

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Provision

CARES

Proton

Therapy

Center,

Orlando

Project,

Series

2018,

7.500%,

6/01/48,

144A

(4)

6/28

at

100.00

N/R

795,486

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Renaissance

Charter

School

Project,

Series

2017A:

6,050

5.125%,

6/15/37,

144A

6/27

at

100.00

N/R

6,173,359

1,885

5.250%,

6/15/47,

144A

6/27

at

100.00

N/R

1,914,218

880

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Viera

Charter

School

Project,

Series

2017A,

5.000%,

10/15/37,

144A

10/27

at

100.00

Ba2

894,432

735

Capital

Trust

Agency,

Florida,

Revenue

Bonds,

Viera

Charter

School

Project,

Series

2019A,

5.000%,

10/15/49,

144A

10/27

at

100.00

Ba2

735,610

4,670

City

of

Miami

Beach,

Florida,

Stormwater

Revenue

Bonds,

Series

2015,

5.000%,

9/01/41

9/25

at

100.00

AA-

5,049,811

1,025

Cityplace

Community

Development

District,

Florida,

Special

Assessement

and  Revenue

Bonds,

Refunding

Series

2012,

5.000%,

5/01/26

No

Opt.

Call

A

1,083,732

1,480

Collier

County

Educational

Facilities

Authority,

Florida,

Revenue

Bonds,

Hodges

University,

Refunding

Series

2013,

6.125%,

11/01/43,

(Pre-

refunded

11/01/23)

11/23

at

100.00

N/R

(5)

1,561,282

Creekside

at

Twin

Creeks

Community

Development

District,

Florida,

Special

Assessment

Bonds,

Area

1

Project,

Series

2016A-1:

240

5.250%,

11/01/37

11/28

at

100.00

N/R

246,300

305

5.600%,

11/01/46

11/28

at

100.00

N/R

313,888

Davie,

Florida,

Educational

Facilities

Revenue

Bonds,

Nova

Southeastern

University

Project,

Series

2013A:

3,445

6.000%,

4/01/42,

(Pre-refunded

4/01/23)

4/23

at

100.00

Baa1

(5)

3,546,455

1,720

5.625%,

4/01/43,

(Pre-refunded

4/01/23)

4/23

at

100.00

Baa1

(5)

1,766,647

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

16

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Florida

(continued)

Downtown

Doral

Community

Development

District,

Florida,

Special

Assessment

Bonds,

Series

2015:

$

280

5.250%,

5/01/35

5/26

at

100.00

N/R

$

284,827

315

5.300%,

5/01/36

5/26

at

100.00

N/R

320,749

475

5.500%,

5/01/45

5/26

at

100.00

N/R

483,084

655

5.500%,

5/01/46

5/26

at

100.00

N/R

665,919

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Classical

Preparatory

Incorporated

Project,

Series

2017A:

255

6.000%,

6/15/37,

144A

6/26

at

100.00

N/R

260,615

665

6.125%,

6/15/46,

144A

6/26

at

100.00

N/R

676,937

415

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Classical

Preparatory

Incorporated

Project,

Series

2018A,

6.000%,

6/15/37,

144A

6/26

at

100.00

N/R

424,138

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Downtown

Doral

Charter

Upper

School

Project,

Series

2017C:

2,375

5.650%,

7/01/37,

144A

7/27

at

101.00

N/R

2,471,544

3,735

5.750%,

7/01/47,

144A

7/27

at

101.00

N/R

3,842,045

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Florida

Charter

Foundation

Inc.

Projects,

Series

2016A:

2,075

4.750%,

7/15/36,

144A

7/26

at

100.00

N/R

2,080,872

1,335

5.000%,

7/15/46,

144A

7/26

at

100.00

N/R

1,339,940

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Mater

Academy

Projects,

Series

2020A:

4,330

5.000%,

6/15/50

6/27

at

100.00

BBB

4,480,294

3,405

5.000%,

6/15/55

6/27

at

100.00

BBB

3,504,290

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Renaissance

Charter

School

Income

Projects,

Series

2015A:

3,090

6.000%,

6/15/35,

144A

6/25

at

100.00

N/R

3,236,126

3,450

6.125%,

6/15/46,

144A

6/25

at

100.00

N/R

3,600,041

550

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Renaissance

Charter

School,

Inc.

Projects,

Series

2014A,

6.125%,

6/15/44,

144A

6/24

at

100.00

N/R

567,011

4,380

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

Southwest

Charter

Foundation

Inc

Projects,

Series

2017A,

6.125%,

6/15/47,

144A

6/27

at

100.00

N/R

4,294,721

Florida

Development

Finance

Corporation,

Educational

Facilities

Revenue

Bonds,

The

Florida

Charter

Educational

Foundation

Inc.

Projects,

Series

2016A:

1,485

6.250%,

6/15/36,

144A

6/26

at

100.00

N/R

1,596,969

4,350

6.375%,

6/15/46,

144A

6/26

at

100.00

N/R

4,641,145

5,490

Florida

Housing

Finance

Corporation,

Homeowner

Mortgage

Revenue

Bonds,

Social

Series

2021-1,

2.150%,

7/01/51

1/30

at

100.00

N/R

3,747,639

1,435

Grand

Bay

at

Doral

Community

Development

District,

Miami-Dade

County,

Florida,

Special

Assessment

Bonds,

South

Parcel

Assessment

Area

Project,

Series

2016,

4.750%,

5/01/36

5/26

at

100.00

N/R

1,453,397

600

Jacksonville,

Florida,

Better

Jacksonville

Sales

Tax

Revenue

Bonds,

Refunding

Series

2012,

5.000%,

10/01/30,

(Pre-refunded

10/01/22)

10/22

at

100.00

A+

(5)

603,528

2,215

Jacksonville,

Florida,

Educational

Facilities

Revenue

Bonds,

Jacksonville

University

Project,

Series

2018B,

5.000%,

6/01/53,

144A

6/28

at

100.00

N/R

2,224,835

17

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Florida

(continued)

$

625

Lakewood

Ranch

Stewardship

District,

Florida,

Special

Assessment

Revenue

Bonds,

Del

Webb

Project,

Series

2017,

5.000%,

5/01/37,

144A

5/27

at

100.00

N/R

$

636,037

4,130

Martin

County

Health

Facilities

Authority,

Florida,

Hospital

Revenue

Bonds,

Martin

Memorial

Medical

Center,

Series

2015,

5.000%,

11/15/45,

(Pre-

refunded

11/15/24)

11/24

at

100.00

N/R

(5)

4,418,852

Miami

Dade

County

Industrial

Development

Authority,

Florida,

Educational

Facilities

Revenue

Bonds,

South

Florida

Autism

Charter

School

Project,

Series

2017:

1,080

5.875%,

7/01/37,

144A

7/27

at

100.00

N/R

1,094,850

1,920

6.000%,

7/01/47,

144A

7/27

at

100.00

N/R

1,934,458

5,965

Miami

Dade

County,

Florida,

Rickenbacker

Causeway

Revenue

Bonds,

Series

2014,

5.000%,

10/01/43

10/24

at

100.00

BBB+

6,101,062

2,130

Miami

Health

Facilities

Authority,

Florida,

Health

Facilities

Revenue

Bonds,

Miami

Jewish

Health

System

Inc.

Project,

Series

2017,

5.125%,

7/01/46

7/27

at

100.00

BB+

1,950,292

5,000

Miami-Dade

County

Expressway

Authority,

Florida,

Toll

System

Revenue

Bonds,

Series

2014A,

5.000%,

7/01/44

7/24

at

100.00

BBB+

5,173,150

2,400

Miami-Dade

County,

Florida,

Special

Obligation

Bonds,

Refunding

Subordinate

Series

2012B,

5.000%,

10/01/37,

(Pre-refunded

10/01/22)

10/22

at

100.00

A2

(5)

2,414,304

6,305

Miami-Dade

County,

Florida,

Water

and

Sewer

System

Revenue

Bonds,

Series

2013A,

5.000%,

10/01/42,

(Pre-refunded

10/01/22)

10/22

at

100.00

A+

(5)

6,342,578

4,785

Northern

Palm

Beach

County

Improvement

District,

Florida,

Water

Control

and

Improvement

Bonds,

Development

Unit

53,

Series

2015,

5.350%,

8/01/35

8/26

at

100.00

N/R

4,964,055

Osceola

County,

Florida,

Transportation

Revenue

Bonds,

Osceola

Parkway,

Refunding

&

Improvement

Series

2019A-1:

1,245

5.000%,

10/01/44

10/29

at

100.00

BBB-

1,313,089

1,645

5.000%,

10/01/49

10/29

at

100.00

BBB-

1,722,480

3,345

4.000%,

10/01/54

10/29

at

100.00

BBB-

3,148,648

2,000

Palm

Beach

County

Health

Facilities

Authority,

Florida,

Hospital

Revenue

Bonds,

Jupiter

Medical

Center,

Series

2022,

5.000%,

11/01/47

11/32

at

100.00

N/R

2,087,280

825

Reunion

West

Community

Development

District,

Florida,

Special

Assessment

Bonds,

Area

3

Project,

Series

2016,

5.000%,

11/01/46

11/26

at

100.00

N/R

833,052

220

Seminole

County

Industrial

Development

Authority,

Florida,

Educational

Facilities

Revenue

Bonds,

Galileo

Schools

for

Gifted

Learning,

Series

2021A,

4.000%,

6/15/51,

144A

6/31

at

100.00

Ba1

183,625

Six

Mile

Creek

Community

Development

District,

Florida,

Capital

Improvement

Revenue

Bonds,

Assessment

Area

2,

Series

2016:

195

4.750%,

11/01/28

11/27

at

100.00

N/R

199,764

375

5.375%,

11/01/36

11/27

at

100.00

N/R

383,992

910

South

Fork

III

Community

Development

District,

Florida,

Special

Assessment

Revenue

Bonds,

Refunding

Series

2016,

5.375%,

5/01/37

5/27

at

100.00

N/R

931,285

355

Tampa,

Florida,

Healthcare

System

Revenue

Bonds,

Allegany

Health

System

-

St.

Joseph's

Hospital,

Series

1993,

5.125%,

12/01/23

-

NPFG

Insured,

(ETM)

8/22

at

100.00

N/R

(5)

372,104

1,735

Tampa,

Florida,

Revenue

Bonds,

H.

Lee

Moffitt

Cancer

Center

and

Research

Institute,

Series

2020B,

5.000%,

7/01/50

7/30

at

100.00

A-

1,862,227

5,015

Volusia

County

Educational

Facilities

Authority,

Florida,

Revenue

Bonds,

Stetson

University

Inc.

Project,

Series

2015,

5.000%,

6/01/40

6/25

at

100.00

A-

5,188,218

135,188

Total

Florida

133,137,956

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

18

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Georgia

-

3.6%

(2.2%

of

Total

Investments)

$

13,235

Burke

County

Development

Authority,

Georgia,

Pollution

Control

Revenue

Bonds,

Georgia

Transmission

Corporation

Vogtle

Project,

Series

2012,

2.750%,

1/01/52

5/31

at

100.00

A1

$

9,982,499

5,775

Burke

County

Development

Authority,

Georgia,

Pollution

Control

Revenue

Bonds,

Oglethorpe

Power

Corporation

Vogtle

Project,

Series

2017C,

4.125%,

11/01/45

2/28

at

100.00

BBB

5,608,911

11,255

Burke

County

Development

Authority,

Georgia,

Pollution

Control

Revenue

Bonds,

Oglethorpe

Power

Corporation

Vogtle

Project,

Series

2017D,

4.125%,

11/01/45

2/28

at

100.00

BBB

10,931,306

5,895

Cobb

County

Kennestone

Hospital

Authority,

Georgia,

Revenue

Anticipation

Certificates,

Wellstar

Health

System,

Inc.

Project,

Series

2022A,

4.000%,

4/01/52

4/32

at

100.00

N/R

5,786,001

10,000

Fulton

County

Development

Authority,

Georgia,

Revenue

Bonds,

Piedmont

Healthcare,

Inc.

Project,

Series

2019A,

4.000%,

7/01/49

7/29

at

100.00

A1

9,887,400

15,305

Gainesville

and

Hall

County

Hospital

Authority,

Georgia,

Revenue

Anticipation

Certificates,

Northeast

Georgia

Health

Services

Inc.,

Series

2014A,

5.500%,

8/15/54,

(Pre-refunded

2/15/25)

2/25

at

100.00

AA

(5)

16,726,988

Georgia

Housing

and

Finance

Authority,

Single

Family

Mortgage

Bonds,

Series

2018A:

2,730

3.950%,

12/01/43

6/27

at

100.00

AAA

2,737,999

4,085

4.000%,

12/01/48

6/27

at

100.00

AAA

4,100,523

1,300

Macon-Bibb

County

Urban

Development

Authority,

Georgia,

Revenue

Bonds,

Academy

for

Classical

Education,

Series

2017,

5.750%,

6/15/37,

144A

6/27

at

100.00

N/R

1,345,552

5,000

Main

Street

Natural

Gas

Inc.,

Georgia,

Gas

Supply

Revenue

Bonds,

Series

2022C,

4.000%,

8/01/52,

(Mandatory

Put

11/01/27),

144A

5/27

at

100.81

N/R

4,960,450

4,000

Marietta

Development

Authority,

Georgia,

University

Facilities

Revenue

Bonds,

Life

University,

Inc.

Project,

Refunding

Series

2017A,

5.000%,

11/01/47,

144A

11/27

at

100.00

Ba3

4,062,360

10,900

Municipal

Electric

Authority

of

Georgia,

Plant

Vogtle

Units

3

&

4

Project

J

Bonds,

Series

2015A,

5.000%,

7/01/60

7/25

at

100.00

Baa1

11,173,045

Municipal

Electric

Authority

of

Georgia,

Plant

Vogtle

Units

3

&

4

Project

J

Bonds,

Series

2019A:

8,680

5.000%,

1/01/49

7/28

at

100.00

Baa1

9,114,608

4,000

5.000%,

1/01/59

7/28

at

100.00

Baa1

4,191,880

1,000

Private

Colleges

and

Universities

Authority,

Georgia,

Revenue

Bonds,

Mercer

University,

Refunding

Series

2012C,

5.250%,

10/01/27

10/22

at

100.00

Baa1

1,006,290

10,090

Private

Colleges

and

Universities

Authority,

Georgia,

Revenue

Bonds,

Mercer

University,

Series

2015,

5.000%,

10/01/40

10/25

at

100.00

Baa1

10,526,392

113,250

Total

Georgia

112,142,204

Guam

-

0.4%

(0.3%

of

Total

Investments)

1,500

Government

of

Guam,

Business

Privilege

Tax

Bonds,

Refunding

Series

2015D,

5.000%,

11/15/39

11/25

at

100.00

BB

1,576,035

Guam

Government

Waterworks

Authority,

Water

and

Wastewater

System

Revenue

Bonds,

Refunding

Series

2017:

1,335

5.000%,

7/01/36

7/27

at

100.00

Baa2

1,424,258

890

5.000%,

7/01/40

7/27

at

100.00

Baa2

943,934

3,695

Guam

Government

Waterworks

Authority,

Water

and

Wastewater

System

Revenue

Bonds,

Series

2013,

5.500%,

7/01/43,

(Pre-refunded

7/01/23)

7/23

at

100.00

Baa2

(5)

3,821,997

235

Guam

Government

Waterworks

Authority,

Water

and

Wastewater

System

Revenue

Bonds,

Series

2016,

5.000%,

1/01/46

7/26

at

100.00

Baa2

246,195

19

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Guam

(continued)

$

4,770

Guam

Government

Waterworks

Authority,

Water

and

Wastewater

System

Revenue

Bonds,

Series

2020A,

5.000%,

1/01/50

7/30

at

100.00

Baa2

$

5,089,686

250

Guam

Power

Authority,

Revenue

Bonds,

Series

2012A,

5.000%,

10/01/34

-

AGM

Insured

10/22

at

100.00

A2

251,385

12,675

Total

Guam

13,353,490

Hawaii

-

0.4%

(0.2%

of

Total

Investments)

1,500

Hawaii

Department

of

Budget

and

Finance,

Special

Purpose

Revenue

Bonds,

Chaminade

University

of

Honolulu,

Series

2015A,

5.000%,

1/01/45,

144A

1/25

at

100.00

Ba3

1,441,305

5,000

Hawaii

Department

of

Budget

and

Finance,

Special

Purpose

Revenue

Bonds,

Hawaii

Pacific

Health

Obligated

Group,

Series

2013A,

5.500%,

7/01/43

7/23

at

100.00

A1

5,147,350

170

Hawaii

Department

of

Budget

and

Finance,

Special

Purpose

Revenue

Bonds,

Hawaii

Pacific

University,

Series

2013A,

6.875%,

7/01/43,

144A

7/23

at

100.00

BB

172,685

5,075

Hawaii

Department

of

Budget

and

Finance,

Special

Purpose

Revenue

Bonds,

Queens

Health

Systems,

Series

2015A,

4.000%,

7/01/40

7/25

at

100.00

A1

5,087,129

11,745

Total

Hawaii

11,848,469

Idaho

-

0.9%

(0.6%

of

Total

Investments)

Idaho

Health

Facilities

Authority,

Revenue

Bonds,

Kootenai

Health

Project,

Series

2014:

3,300

4.375%,

7/01/34

7/24

at

100.00

A

3,329,997

12,495

4.750%,

7/01/44

7/24

at

100.00

A

12,642,566

1,250

Idaho

Health

Facilities

Authority,

Revenue

Bonds,

Madison

Memorial

Hospital

Project,

Refunding

Series

2016,

5.000%,

9/01/37

9/26

at

100.00

BB+

1,307,650

1,000

Idaho

Health

Facilities

Authority,

Revenue

Bonds,

Saint

Luke's

Health

System

Project,

Series

2014A,

4.125%,

3/01/37

3/24

at

100.00

A-

1,005,840

Idaho

Housing

and

Finance

Association,

Nonprofit

Facilities

Revenue

Bonds,

Gem

Prep

Meridian

North

LLC,

Series

2020A:

500

5.000%,

7/01/40,

144A

7/25

at

100.00

N/R

450,615

1,415

5.250%,

7/01/55,

144A

7/25

at

100.00

N/R

1,232,479

12,055

Spring

Valley

Community

Infrastructure

District

1,

Eagle,

Idaho,

Special

Assessment

Bonds,

Series

2021,

3.750%,

9/01/51,

144A

12/26

at

103.00

N/R

9,497,532

32,015

Total

Idaho

29,466,679

Illinois

-

23.9%

(14.5%

of

Total

Investments)

675

Bolingbrook,

Will

and

DuPage

Counties,

Illinois,

General

Obligation

Bonds,

Refunding

Series

2013A,

5.000%,

1/01/25,

(Pre-refunded

7/01/23)

7/23

at

100.00

A2

(5)

696,087

67,135

Chicago

Board

of

Education,

Illinois,

Dedicated

Capital

Improvement

Tax

Revenue

Bonds,

Series

2016,

6.000%,

4/01/46

4/27

at

100.00

A-

72,735,402

1,000

Chicago

Board

of

Education,

Illinois,

Dedicated

Capital

Improvement

Tax

Revenue

Bonds,

Series

2017,

5.000%,

4/01/46

4/27

at

100.00

A-

1,034,830

5,245

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues

Series

2012A,

5.000%,

12/01/42

12/22

at

100.00

Ba3

5,248,881

8,400

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Refunding

Series

2017B,

7.000%,

12/01/42,

144A

12/27

at

100.00

BB

9,638,832

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Refunding

Series

2017H:

5,835

5.000%,

12/01/36

12/27

at

100.00

BB

6,154,175

4,940

5.000%,

12/01/46

12/27

at

100.00

BB

5,132,314

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

20

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Illinois

(continued)

$

6,055

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Refunding

Series

2018D,

5.000%,

12/01/46

12/28

at

100.00

BB

$

6,318,029

38,905

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Series

2016A,

7.000%,

12/01/44

12/25

at

100.00

BB

42,795,889

14,805

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Series

2016B,

6.500%,

12/01/46

12/26

at

100.00

BB

16,286,980

19,585

Chicago

Board

of

Education,

Illinois,

General

Obligation

Bonds,

Dedicated

Revenues,

Series

2017A,

7.000%,

12/01/46,

144A

12/27

at

100.00

BB

22,353,144

1,410

Chicago

Board

of

Education,

Illinois,

Unlimited

Tax

General

Obligation

Bonds,

Dedicated

Tax

Revenues,

Series

1998B-1,

0.000%,

12/01/30

-

NPFG

Insured

No

Opt.

Call

BB

1,052,184

Chicago

Transit

Authority,

Illinois,

Sales

Tax

Receipts

Revenue

Bonds,

Second

Lien

Series

2020A:

1,405

4.000%,

12/01/50

12/29

at

100.00

A+

1,376,085

2,585

5.000%,

12/01/55

12/29

at

100.00

A+

2,788,905

12,215

Chicago

Transit

Authority,

Illinois,

Sales

Tax

Receipts

Revenue

Bonds,

Series

2014,

5.250%,

12/01/49

12/24

at

100.00

AA

12,725,221

Chicago,

Illinois,

General

Obligation

Bonds,

City

Colleges,

Series

1999:

1,500

0.000%,

1/01/31

-

NPFG

Insured

No

Opt.

Call

BBB-

1,091,745

32,670

0.000%,

1/01/32

-

FGIC

Insured

No

Opt.

Call

BBB-

22,659,912

12,360

0.000%,

1/01/37

-

FGIC

Insured

No

Opt.

Call

BBB-

6,592,082

2,500

Chicago,

Illinois,

General

Obligation

Bonds,

Project

&

Refunding

Series

2014A,

5.250%,

1/01/33

1/24

at

100.00

Ba1

2,560,825

17,605

Chicago,

Illinois,

General

Obligation

Bonds,

Project

&

Refunding

Series

2017A,

6.000%,

1/01/38

1/27

at

100.00

BBB-

19,169,556

2,605

Chicago,

Illinois,

General

Obligation

Bonds,

Refunding

Series

2016C,

5.000%,

1/01/38

1/26

at

100.00

BBB-

2,698,754

3,000

Chicago,

Illinois,

Wastewater

Transmission

Revenue

Bonds,

Second

Lien

Series

2008C,

5.000%,

1/01/39

1/25

at

100.00

A-

3,121,830

10,000

Cook

County

Community

College

District

508,

Illinois,

General

Obligation

Bonds,

Chicago

City

Colleges,

Series

2013,

5.250%,

12/01/43

12/23

at

100.00

BBB

10,177,500

Illinois

Educational

Facilities

Authority,

Revenue

Bonds,

Field

Museum

of

Natural

History,

Series

2002.RMKT:

2,500

4.450%,

11/01/36

11/25

at

102.00

A2

2,635,675

3,400

5.500%,

11/01/36

11/23

at

100.00

A

3,563,642

Illinois

Finance

Authority,

Charter

School

Revenue

Bonds,

Intrinsic

Charter

Schools

Belmont

School

Project,

Series

2015A:

1,700

5.750%,

12/01/35,

144A

12/25

at

100.00

N/R

1,791,800

115

6.000%,

12/01/45,

144A

12/25

at

100.00

N/R

121,143

Illinois

Finance

Authority,

Health

Services

Facility

Lease

Revenue

Bonds,

Provident

Group

-

UIC

Surgery

Center,

LLC

-

University

of

Illinois

Health

Services

Facility

Project,

Series

2020:

3,835

4.000%,

10/01/50

10/30

at

100.00

BBB+

3,622,234

5,190

4.000%,

10/01/55

10/30

at

100.00

BBB+

4,698,974

Illinois

Finance

Authority,

Revenue

Bonds,

Ascension

Health/fkaPresence

Health

Network,

Series

2016C:

37,640

4.000%,

2/15/41

2/27

at

100.00

Aa2

38,037,855

80

4.000%,

2/15/41,

(Pre-refunded

2/15/27)

2/27

at

100.00

N/R

(5)

86,567

1,755

4.000%,

2/15/41,

(Pre-refunded

2/15/27)

2/27

at

100.00

N/R

(5)

1,899,050

6,750

Illinois

Finance

Authority,

Revenue

Bonds,

Centegra

Health

System,

Series

2012,

5.000%,

9/01/38,

(Pre-refunded

9/01/22)

9/22

at

100.00

AA+

(5)

6,769,372

21

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Illinois

(continued)

Illinois

Finance

Authority,

Revenue

Bonds,

Centegra

Health

System,

Series

2014A:

$

1,485

5.000%,

9/01/34,

(Pre-refunded

9/01/24)

9/24

at

100.00

AA+

(5)

$

1,584,822

19,025

5.000%,

9/01/42,

(Pre-refunded

9/01/24)

9/24

at

100.00

AA+

(5)

20,303,860

4,000

Illinois

Finance

Authority,

Revenue

Bonds,

Lutheran

Home

and

Services,

Series

2019A,

5.000%,

11/01/49

11/26

at

103.00

N/R

3,756,480

15,850

Illinois

Finance

Authority,

Revenue

Bonds,

Mercy

Health

Corporation,

Series

2016,

5.000%,

12/01/46

6/26

at

100.00

A3

16,503,496

10,000

Illinois

Finance

Authority,

Revenue

Bonds,

Northshore

-

Edward-Elmhurst

Health

Credit

Group,

Series

2022A,

5.000%,

8/15/51

8/32

at

100.00

N/R

10,980,200

1,435

Illinois

Finance

Authority,

Revenue

Bonds,

Rehabilitation

Institute

of

Chicago,

Series

2013A,

6.000%,

7/01/43

7/23

at

100.00

A-

1,483,876

Illinois

Finance

Authority,

Revenue

Bonds,

Rosalind

Franklin

University

Research

Building

Project,

Series

2017C:

1,000

5.000%,

8/01/42

8/27

at

100.00

BBB+

1,042,110

1,000

5.000%,

8/01/46

8/27

at

100.00

BBB+

1,036,130

1,000

5.000%,

8/01/47

8/27

at

100.00

BBB+

1,035,550

Illinois

Finance

Authority,

Revenue

Bonds,

Silver

Cross

Hospital

and

Medical

Centers,

Refunding

Series

2015C:

560

5.000%,

8/15/35

8/25

at

100.00

A3

583,839

6,140

5.000%,

8/15/44

8/25

at

100.00

A3

6,344,217

Illinois

Finance

Authority,

Revenue

Bonds,

University

of

Chicago,

Refunding

Series

2015A:

17,765

5.000%,

10/01/46,

(Pre-refunded

10/01/25),

(UB)

10/25

at

100.00

N/R

(5)

19,478,257

2,235

5.000%,

10/01/46,

(UB)

10/25

at

100.00

AA-

2,378,822

5,670

Illinois

Housing

Development

Authority,

Multifamily

Housing

Revenue

Bonds,

Series

2021C,

2.850%,

7/01/56

7/30

at

100.00

N/R

4,353,483

3,665

Illinois

Sports

Facility

Authority,

State

Tax

Supported

Bonds,

Refunding

Series

2014,

5.250%,

6/15/31

-

AGM

Insured

6/24

at

100.00

BB+

3,848,177

Illinois

State,

General

Obligation

Bonds,

December

Series

2017A:

11,800

5.000%,

12/01/38

12/27

at

100.00

BBB-

12,462,924

1,330

5.000%,

12/01/39

12/27

at

100.00

BBB-

1,403,004

Illinois

State,

General

Obligation

Bonds,

February

Series

2014:

3,275

5.000%,

2/01/24

No

Opt.

Call

BBB-

3,417,757

1,575

5.250%,

2/01/34

2/24

at

100.00

BBB-

1,613,918

7,500

5.000%,

2/01/39

2/24

at

100.00

BBB-

7,629,750

5,200

Illinois

State,

General

Obligation

Bonds,

January

Series

2016,

5.000%,

1/01/29

1/26

at

100.00

BBB-

5,517,356

Illinois

State,

General

Obligation

Bonds,

May

Series

2014:

510

5.000%,

5/01/36

5/24

at

100.00

BBB-

521,240

1,915

5.000%,

5/01/39

5/24

at

100.00

BBB-

1,953,377

4,460

Illinois

State,

General

Obligation

Bonds,

May

Series

2020,

5.500%,

5/01/39

5/30

at

100.00

BBB-

4,977,182

13,200

Illinois

State,

General

Obligation

Bonds,

November

Series

2016,

5.000%,

11/01/41

11/26

at

100.00

BBB-

13,751,892

31,485

Illinois

State,

General

Obligation

Bonds,

November

Series

2017C,

5.000%,

11/01/29

11/27

at

100.00

BBB-

34,235,215

2,040

Illinois

State,

General

Obligation

Bonds,

November

Series

2017D,

5.000%,

11/01/27

No

Opt.

Call

BBB-

2,248,406

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

22

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Illinois

(continued)

$

5,000

Illinois

State,

General

Obligation

Bonds,

November

Series

2019B,

4.000%,

11/01/35

11/29

at

100.00

BBB-

$

4,988,450

5,000

Illinois

State,

General

Obligation

Bonds,

October

Series

2016,

5.000%,

2/01/29

2/27

at

100.00

BBB-

5,398,900

Illinois

State,

General

Obligation

Bonds,

Series

2013:

2,000

5.250%,

7/01/31

7/23

at

100.00

BBB-

2,049,880

4,140

5.500%,

7/01/38

7/23

at

100.00

BBB-

4,244,949

Illinois

Toll

Highway

Authority,

Toll

Highway

Revenue

Bonds,

Senior

Lien

Series

2013A:

5,000

5.000%,

1/01/35

1/23

at

100.00

A1

5,051,250

5,590

5.000%,

1/01/38

1/23

at

100.00

A1

5,643,217

18,920

Illinois

Toll

Highway

Authority,

Toll

Highway

Revenue

Bonds,

Senior

Lien

Series

2015A,

5.000%,

1/01/40

7/25

at

100.00

A1

19,988,791

10,000

Illinois

Toll

Highway

Authority,

Toll

Highway

Revenue

Bonds,

Senior

Lien

Series

2019A,

5.000%,

1/01/44

7/29

at

100.00

A1

11,030,900

10,470

Illinois

Toll

Highway

Authority,

Toll

Highway

Revenue

Bonds,

Senior

Lien

Series

2021A,

5.000%,

1/01/46

1/32

at

100.00

N/R

11,736,975

540

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Refunding

Series

2015B,

5.000%,

6/15/52

12/25

at

100.00

BB+

552,355

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Refunding

Series

2020A:

12,325

4.000%,

6/15/50

12/29

at

100.00

BB+

11,656,615

15,160

5.000%,

6/15/50

12/29

at

100.00

BB+

15,757,759

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Refunding

Series

2022A:

2,910

4.000%,

12/15/42

12/31

at

100.00

BB+

2,822,962

4,500

4.000%,

6/15/52

12/31

at

100.00

BB+

4,237,830

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

McCormick

Place

Expansion

Project

Bonds,

Series

2015A:

2,890

0.000%,

12/15/52

No

Opt.

Call

BB+

654,961

5,185

5.000%,

6/15/53

12/25

at

100.00

BB+

5,303,944

5,700

5.500%,

6/15/53

12/25

at

100.00

BB+

5,928,057

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

Revenue

Bonds,

McCormick

Place

Expansion

Project,

Capital

Appreciation

Refunding

Series

2010B-1:

25,000

0.010%,

6/15/44

-

AGM

Insured

No

Opt.

Call

BB+

9,653,750

43,200

0.000%,

6/15/45

-

AGM

Insured

No

Opt.

Call

BB+

15,888,096

10,000

0.000%,

6/15/46

-

AGM

Insured

No

Opt.

Call

BB+

3,496,700

8,750

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

Revenue

Bonds,

McCormick

Place

Expansion

Project,

Series

1994B,

0.000%,

6/15/28

-

NPFG

Insured

No

Opt.

Call

Baa2

7,257,075

Metropolitan

Pier

and

Exposition

Authority,

Illinois,

Revenue

Bonds,

McCormick

Place

Expansion

Project,

Series

2002A:

18,085

0.000%,

12/15/24

-

NPFG

Insured

No

Opt.

Call

BB+

16,959,932

20,045

0.000%,

12/15/35

-

AGM

Insured

No

Opt.

Call

BB+

12,008,559

9,010

0.000%,

6/15/37

-

NPFG

Insured

No

Opt.

Call

BB+

4,828,819

465

Morton

Grove,

Illinois,

Tax

Increment

Revenue

Bonds,

Sawmill

Station

Redevelopment

Project,

Senior

Lien

Series

2019,

5.000%,

1/01/39

1/26

at

100.00

N/R

446,851

1,842

Plano,

Illinois,

Special

Tax

Bonds,

Special

Service

Area

1

&

2

Lakewood

Springs

Project,

Refunding

Series

2014,

5.000%,

3/01/34

-

AGM

Insured

3/24

at

100.00

AA

1,909,472

23

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Illinois

(continued)

$

2,600

Regional

Transportation

Authority,

Cook,

DuPage,

Kane,

Lake,

McHenry

and

Will

Counties,

Illinois,

General

Obligation

Bonds,

Series

2000A,

6.500%,

7/01/30

-

NPFG

Insured

No

Opt.

Call

A1

$

3,175,848

7,025

Southwestern

Illinois

Development

Authority,

Health

Facility

Revenue

Bonds,

Memorial

Group,

Inc.,

Series

2013,

7.625%,

11/01/48,

(Pre-

refunded

11/01/23)

11/23

at

100.00

N/R

(5)

7,537,544

4,000

Southwestern

Illinois

Development

Authority,

School

Revenue

Bonds,

Triad

School

District

2,

Madison

County,

Illinois,

Series

2006,

0.000%,

10/01/25

-

NPFG

Insured

No

Opt.

Call

Baa2

3,674,920

12,125

Springfield,

Illinois,

Electric

Revenue

Bonds,

Refunding

Senior

Lien

Series

2015,

5.000%,

3/01/40

-

AGM

Insured

3/25

at

100.00

A2

12,866,686

Will

County

Community

Unit

School

District

201-U

Crete-Monee,

Illinois,

General

Obligation

Bonds,

Capital

Appreciation

Series

2004:

780

0.000%,

11/01/22

-

NPFG

Insured,

(ETM)

No

Opt.

Call

Baa2

(5)

776,856

165

0.000%,

11/01/22

-

NPFG

Insured,

(ETM)

No

Opt.

Call

N/R

(5)

164,375

6,415

Will

County

School

District

122,

New

Lenox,

Illinois,

General

Obligation

Bonds,

Capital

Appreciation

School

Series

2004D,

0.000%,

11/01/24

-

AGM

Insured

No

Opt.

Call

Aa3

6,081,484

795,357

Total

Illinois

745,855,576

Indiana

-

2.3%

(1.4%

of

Total

Investments)

2,650

Crown

Point

Multi-School

Building

Corporation,

Indiana,

First

Mortgage

Bonds,

Crown

Point

Community

School

Corporation,

Series

2000,

0.000%,

1/15/24

-

NPFG

Insured

No

Opt.

Call

Baa2

2,572,938

12,045

Indiana

Finance

Authority,

Educational

Facilities

Revenue

Bonds,

Valparaiso

University

Project,

Series

2014,

5.000%,

10/01/44

10/24

at

100.00

Baa1

12,342,271

10,425

Indiana

Finance

Authority,

Hospital

Revenue

Bonds,

Community

Health

Network

Project,

Series

2012A,

5.000%,

5/01/42,

(Pre-refunded

5/01/23)

5/23

at

100.00

A

(5)

10,689,691

17,970

Indiana

Finance

Authority,

Wastewater

Utility

Revenue

Bonds,

CWA

Authority

Project,

Series

2014A,

5.000%,

10/01/44

10/24

at

100.00

A+

18,746,124

Indianapolis

Local

Public

Improvement

Bond

Bank,

Indiana,

Series

1999E:

10,000

0.000%,

2/01/26

-

AMBAC

Insured

No

Opt.

Call

AA-

9,235,200

20,000

0.000%,

2/01/28

-

AMBAC

Insured

No

Opt.

Call

AA-

17,422,800

73,090

Total

Indiana

71,009,024

Iowa

-

1.5%

(0.9%

of

Total

Investments)

10,000

Iowa

Finance

Authority,

Health

Facilities

Revenue

Bonds,

UnityPoint

Health

Project,  Series

2013A,

5.250%,

2/15/44,

(Pre-refunded

2/15/23)

2/23

at

100.00

A1

(5)

10,203,900

Iowa

Finance

Authority,

Iowa,

Midwestern

Disaster

Area

Revenue

Bonds,

Iowa

Fertilizer

Company

Project,

Refunding

Series

2022:

10,045

5.000%,

12/01/50

12/29

at

103.00

N/R

10,548,857

10,860

5.000%,

12/01/50,

(Mandatory

Put

12/01/42)

12/29

at

103.00

N/R

11,543,963

5,700

Iowa

Finance

Authority,

Senior

Housing

Revenue

Bonds,

PHS

Council

Bluffs,

Inc.

Project,

Series

2018,

5.250%,

8/01/55

8/23

at

102.00

N/R

4,978,836

36,850

Iowa

Tobacco

Settlement

Authority,

Tobacco

Settlement

Asset-Backed

Bonds,

Class

2

Capital

Appreciation

Senior

Lien

Series

2021B-2,

0.000%,

6/01/65

6/31

at

25.58

N/R

4,913,579

4,315

Iowa

Tobacco

Settlement

Authority,

Tobacco

Settlement

Asset-Backed

Bonds,

Seenior

Lien

Series

Class

2

Series

2021B-1,

4.000%,

6/01/49

6/31

at

100.00

BBB

4,343,781

77,770

Total

Iowa

46,532,916

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

24

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Kansas

-

0.4%

(0.2%

of

Total

Investments)

$

1,000

Lenexa,

Kansas,

Health

Care

Facilities

Revenue

Bonds,

Lakeview

Village

Inc,

Series

2017A,

5.000%,

5/15/43

5/27

at

100.00

BB+

$

1,016,510

Wyandotte

County-Kansas

City

Unified

Government,

Kansas,

Sales

Tax

Special

Obligation

Bonds,

Vacation

Village

Project

Area

1

and

2A,

Series

2015:

3,395

5.000%,

9/01/27

9/25

at

100.00

N/R

3,247,997

2,380

5.750%,

9/01/32

9/25

at

100.00

N/R

2,224,300

2,575

6.000%,

9/01/35

9/25

at

100.00

N/R

2,419,393

2,500

Wyandotte

County-Kansas

City

Unified

Government,

Kansas,

Sales

Tax

Special

Obligation

Bonds,

Village

East

Project

Areas

2B

3

and

5,

Series

2022,

5.750%,

9/01/39,

144A

3/29

at

103.00

N/R

2,520,000

11,850

Total

Kansas

11,428,200

Kentucky

-

2.1%

(1.3%

of

Total

Investments)

5,915

Christian

County,

Kentucky,

Hospital

Revenue

Bonds,

Jennie

Stuart

Medical

Center,

Series

2016,

5.500%,

2/01/44

2/26

at

100.00

BB+

6,139,534

2,480

Kentucky

Bond

Development

Corporation,

Tax

Increment

Revenue

Bonds,

Summit

Lexington

Project,

Series

2016A,

4.400%,

10/01/24

No

Opt.

Call

N/R

2,418,719

10,000

Kentucky

Economic

Development

Finance

Authority,

Hospital

Revenue

Bonds,

Owensboro

Health,

Refunding

Series

2017A,

5.000%,

6/01/37

6/27

at

100.00

BBB-

10,538,500

Kentucky

Economic

Development

Finance

Authority,

Revenue

Bonds,

Next

Generation

Kentucky

Information

Highway

Project,

Senior

Series

2015A:

4,345

5.000%,

7/01/37

7/25

at

100.00

Baa2

4,523,623

17,615

5.000%,

1/01/45

7/25

at

100.00

Baa2

18,169,520

Kentucky

Public

Transportation

Infrastructure

Authority,

Toll

Revenue

Bonds,

Downtown

Crossing

Project,

Convertible

Capital

Appreciation

First

Tier

Series

2013C:

4,360

0.000%,

7/01/43

(8)

7/31

at

100.00

Baa2

4,854,249

8,510

0.000%,

7/01/46

(8)

7/31

at

100.00

Baa2

9,502,011

Kentucky

Public

Transportation

Infrastructure

Authority,

Toll

Revenue

Bonds,

Downtown

Crossing

Project,

First

Tier

Series

2013A:

2,390

5.750%,

7/01/49,

(Pre-refunded

7/01/23)

7/23

at

100.00

Baa2

(5)

2,475,323

480

6.000%,

7/01/53,

(Pre-refunded

7/01/23)

7/23

at

100.00

Baa2

(5)

498,130

5,000

Louisville

and

Jefferson

County

Metropolitan

Government,

Kentucky,

Hospital

Revenue

Bonds,

UofL

Health

Project,

Series

2022A,

5.000%,

5/15/52

5/32

at

100.00

N/R

5,245,000

61,095

Total

Kentucky

64,364,609

Louisiana

-

1.4%

(0.9%

of

Total

Investments)

2,525

Ascension

Parish

Industrial

development

Board,

Louisiana,

Revenue

Bonds,

Impala

Warehousing

(US)

LLC

Project,

Series

2013,

6.000%,

7/01/36

7/23

at

100.00

N/R

2,551,639

Louisiana

Public

Facilities

Authority,

Hospital

Revenue

Bonds,

Franciscan

Missionaries

of

Our

Lady

Health

System,

Series

1998A:

5,290

5.750%,

7/01/25,

(UB)

No

Opt.

Call

A2

5,632,634

135

5.750%,

7/01/25,

(ETM),

(UB)

No

Opt.

Call

A2

(5)

150,190

2,000

Louisiana

Public

Facilities

Authority,

Hospital

Revenue

Bonds,

Louisiana

Children's

Medical

Center

Hospital,

Series

2020A,

4.000%,

6/01/50

6/30

at

100.00

A+

1,979,020

11,095

Louisiana

Public

Facilities

Authority,

Louisiana,

Revenue

Bonds,

Ochsner

Clinic

Foundation

Project,

Series

2020A,

4.000%,

5/15/49

5/30

at

100.00

A3

10,863,780

11,000

Louisiana

Public

Facilities

Authority,

Revenue

Bonds,

Loyola

University

Project,

Refunding

Series

2017,

0.000%,

10/01/46

(8)

10/33

at

100.00

BBB

10,530,850

25

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Louisiana

(continued)

Louisiana

Public

Facilities

Authority,

Revenue

Bonds,

Ochsner

Clinic

Foundation

Project,

Series

2015:

$

1,045

4.250%,

5/15/40

5/25

at

100.00

A3

$

1,056,401

6,970

5.000%,

5/15/47

5/25

at

100.00

A3

7,154,566

1,000

New

Orleans,

Louisiana,

Sewerage

Service

Revenue

Bonds,

Refunding

Series

2014,

4.250%,

6/01/34,

(Pre-refunded

6/01/24)

6/24

at

100.00

A

(5)

1,046,680

3,275

Saint

James

Parish,

Louisiana,

Revenue

Bonds,

NuStar

Logistics,

L.P.

Project,

Series

2010A,

6.350%,

10/01/40,

144A

6/30

at

100.00

BB-

3,703,173

44,335

Total

Louisiana

44,668,933

Maine

-

1.9%

(1.1%

of

Total

Investments)

7,530

Maine

Health

and

Higher

Educational

Facilities

Authority

Revenue

Bonds,

Eastern

Maine

Medical

Center

Obligated

Group

Issue,

Series

2013,

5.000%,

7/01/43,

(Pre-refunded

7/01/23)

7/23

at

100.00

Ba1

(5)

7,761,773

Maine

Health

and

Higher

Educational

Facilities

Authority

Revenue

Bonds,

Eastern

Maine

Medical

Center

Obligated

Group

Issue,

Series

2016A:

5,450

4.000%,

7/01/41

7/26

at

100.00

Ba1

5,250,476

10,265

4.000%,

7/01/46

7/26

at

100.00

Ba1

9,574,268

10,000

Maine

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

Mainehealth

Issue,

Series

2015,

5.000%,

7/01/39,

(Pre-refunded

7/01/24)

7/24

at

100.00

A+

(5)

10,612,700

Maine

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

MaineHealth

Issue,

Series

2020A:

2,745

4.000%,

7/01/45

7/30

at

100.00

A+

2,750,106

5,000

4.000%,

7/01/50

7/30

at

100.00

A+

4,931,100

4,500

Maine

State

Housing

Authority,

Multifamily

Mortgage

Purchase

Bonds,

Series

2021A,

2.200%,

11/15/51

5/30

at

100.00

AA+

3,011,625

8,885

Maine

State

Housing

Authority,

Multifamily

Mortgage

Purchase

Bonds,

Series

2022A,

2.600%,

11/15/46

11/30

at

100.00

N/R

6,777,567

7,695

Maine

State

Housing

Authority,

Single

Family

Mortgage

Purchase

Bonds,

Series

2020D,

2.800%,

11/15/45

5/29

at

100.00

AA+

6,650,634

915

Maine

State

Housing

Authority,

Single

Family

Mortgage

Purchase

Bonds,

Social

Series

2021C,

2.300%,

11/15/46

11/30

at

100.00

AA+

674,611

62,985

Total

Maine

57,994,860

Maryland

-

2.2%

(1.3%

of

Total

Investments)

Baltimore,

Maryland,

Convention

Center

Hotel

Revenue

Bonds,

Refunding

Series

2017:

1,280

5.000%,

9/01/33

9/27

at

100.00

CCC

1,285,670

3,050

5.000%,

9/01/39

9/27

at

100.00

CCC

2,999,645

3,025

5.000%,

9/01/46

9/27

at

100.00

CCC

2,905,815

1,000

Howard

County,

Maryland,

Special

Obligation

Bonds,

Downtown

Columbia

Project,

Series

2017A,

4.375%,

2/15/39,

144A

2/26

at

100.00

N/R

984,360

Maryland

Community

Development

Administration

Department

of

Housing

and

Community

Development,

Residential

Revenue

Bonds,

Series

2021C:

6,600

2.450%,

9/01/41

9/30

at

100.00

N/R

5,317,092

12,000

2.550%,

9/01/44

9/30

at

100.00

N/R

9,451,080

10,045

Maryland

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

Adventist

HealthCare

Issue,

Series

2021B,

4.000%,

1/01/51

1/32

at

100.00

N/R

9,624,516

13,315

Maryland

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

Adventist

Healthcare,

Series

2016A,

5.500%,

1/01/46

1/27

at

100.00

Baa3

13,949,992

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

26

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Maryland

(continued)

$

10,000

Maryland

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

LifeBridge

Health

System,

Series

2015,

5.000%,

7/01/47

7/25

at

100.00

A+

$

10,388,200

1,500

Maryland

Health

and

Higher

Educational

Facilities

Authority,

Revenue

Bonds,

Peninsula

Regional

Medical

Center

Issue,

Refunding

Series

2015,

5.000%,

7/01/45,

(Pre-refunded

7/01/24)

7/24

at

100.00

A3

(5)

1,590,450

Prince

George's

County

Revenue

Authority,

Maryland,

Special

Obligation

Bonds,

Suitland-Naylor

Road

Project,

Series

2016:

2,000

4.750%,

7/01/36,

144A

1/26

at

100.00

N/R

2,045,420

2,300

5.000%,

7/01/46,

144A

1/26

at

100.00

N/R

2,368,195

Rockville

Mayor

and

Council,

Maryland,

Economic

Development

Revenue

Bonds,

Series

2017B:

1,335

4.250%,

11/01/37

11/24

at

103.00

B-

1,211,686

1,250

4.500%,

11/01/43

11/24

at

103.00

B-

1,156,350

2,650

5.000%,

11/01/47

11/24

at

103.00

B-

2,608,687

71,350

Total

Maryland

67,887,158

Massachusetts

-

3.3%

(2.0%

of

Total

Investments)

Massachusetts

Development

Finance

Agency

Revenue

Bonds,

Lawrence

General

Hospital

Issue,

Series

2014A:

2,245

5.250%,

7/01/34

7/24

at

100.00

B-

2,134,142

6,195

5.500%,

7/01/44

7/24

at

100.00

B-

5,692,524

Massachusetts

Development

Finance

Agency

Revenue

Refunding

Bonds,

NewBridge

on

the

Charles,

Inc.

Issue,

Series

2017:

8,200

4.125%,

10/01/42,

144A

10/22

at

105.00

BB+

8,465,844

3,000

5.000%,

10/01/57,

144A

10/22

at

105.00

BB+

3,155,850

10,000

Massachusetts

Development

Finance

Agency,

Revenue

Bonds,

CareGroup

Issue,

Series

2018J-2,

5.000%,

7/01/53

7/28

at

100.00

A3

10,576,600

Massachusetts

Development

Finance

Agency,

Revenue

Bonds,

Emerson

College,

Series

2015:

4,020

4.500%,

1/01/45

1/25

at

100.00

Baa2

4,048,019

2,950

5.000%,

1/01/45

1/25

at

100.00

Baa2

3,022,452

4,035

Massachusetts

Development

Finance

Agency,

Revenue

Bonds,

Emmanuel

College,

Series

2016A,

4.000%,

10/01/46

10/26

at

100.00

Baa2

3,859,276

16,280

Massachusetts

Development

Finance

Agency,

Revenue

Bonds,

Massachusetts

Institute

of

Technology,

Series

2020P,

5.000%,

7/01/50

No

Opt.

Call

AAA

20,597,619

900

Massachusetts

Development

Finance

Agency,

Revenue

Bonds,

Milford

Regional

Medical

Center

Issue,

Series

2020G,

5.000%,

7/15/46,

144A

7/30

at

100.00

BB+

913,482

6,000

Massachusetts

Development

Finance

Authority,

Revenue

Bonds,

WGBH

Educational

Foundation,

Series

2002A,

5.750%,

1/01/42

-

AMBAC

Insured

No

Opt.

Call

AA-

7,878,180

7,405

Massachusetts

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Massachusetts

Institute

of

Technology,

Series

2002K,

5.500%,

7/01/32,

(UB)

(6)

No

Opt.

Call

AAA

9,460,110

2,800

Massachusetts

Housing

Finance

Agency,

Housing

Bonds,

Series

2014D,

3.875%,

12/01/39

6/24

at

100.00

AA-

2,799,496

Massachusetts

Housing

Finance

Agency,

Housing

Bonds,

Sustainability

Green

Series

2021A-1:

3,340

2.375%,

12/01/46

6/30

at

100.00

AA

2,457,739

3,600

2.450%,

12/01/51

6/30

at

100.00

AA

2,608,920

8,310

2.550%,

12/01/56

6/30

at

100.00

AA

5,854,561

4,500

Massachusetts

Housing

Finance

Agency,

Single

Family

Housing

Revenue

Bonds,

Social

Series

2020-220,

2.300%,

12/01/44

6/30

at

100.00

AA+

3,350,430

27

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Massachusetts

(continued)

$

4,560

Massachusetts

School

Building

Authority,

Dedicated

Sales

Tax

Revenue

Bonds,

Senior

Series

2013A,

5.000%,

5/15/43,

(Pre-refunded

5/15/23)

5/23

at

100.00

Aa2

(5)

$

4,683,986

3,345

Massachusetts

State,

General

Obligation

Bonds,

Consolidated

Loan,

Series

2021B,

2.000%,

4/01/50

4/31

at

100.00

AA

2,177,327

425

Massachusetts

Water

Pollution

Abatement

Trust,

Revenue

Bonds,

MWRA

Loan

Program,

Subordinate

Series

1999A,

5.750%,

8/01/29

8/22

at

100.00

AAA

426,262

102,110

Total

Massachusetts

104,162,819

Michigan

-

2.2%

(1.3%

of

Total

Investments)

5,060

Detroit

City

School

District,

Wayne

County,

Michigan,

Unlimited

Tax

School

Building

and

Site

Improvement

Bonds,

Series

2001A,

6.000%,

5/01/29

-

AGM

Insured,

(UB)

No

Opt.

Call

AA

5,865,855

3,665

Detroit

Downtown

Development

Authority,

Michigan,

Tax

Increment

Revenue

Bonds,

Catalyst

Development

Project,

Series

2018A,

5.000%,

7/01/48

-

AGM

Insured

7/24

at

100.00

AA

3,844,915

Michigan

Finance

Authority,

Hospital

Revenue

Bonds,

Sparrow

Obligated

Group,

Refunding

Series

2015:

4,495

4.000%,

11/15/35

5/25

at

100.00

A

4,551,951

2,550

4.000%,

11/15/36

5/25

at

100.00

A

2,574,633

Michigan

Finance

Authority,

Michigan,

Revenue

Bonds,

Trinity

Health

Credit

Group,

Refunding

Series

2016MI:

9,855

5.000%,

12/01/45,

(UB)

6/26

at

100.00

AA-

10,444,723

145

5.000%,

12/01/45,

(Pre-refunded

6/01/26),

(UB)

6/26

at

100.00

N/R

(5)

161,648

2,705

Michigan

Finance

Authority,

Tobacco

Settlement

Asset-

Backed

Bonds,

2006

Sold

Tobacco

Receipts

Senior

Current

Interest

Series

2020A-2,

5.000%,

6/01/40

12/30

at

100.00

BBB

2,910,526

1,000

Michigan

Finance

Authority,

Tobacco

Settlement

Asset-

Backed

Bonds,

2007

Sold

Tobacco

Receipts,

Series

2020A-CL-1,

4.000%,

6/01/49

12/30

at

100.00

BBB+

947,880

Michigan

Housing

Development

Authority,

Single

Family

Mortgage

Revenue

Bonds,

Social

Series

2021A:

21,675

2.350%,

12/01/46

12/30

at

100.00

Aa2

16,003,520

8,280

2.500%,

6/01/52

12/30

at

100.00

Aa2

5,979,319

10,000

Michigan

State

Building

Authority,

Revenue

Bonds,

Facilities

Program,

Refunding

Series

2020-I,

2.625%,

10/15/56

10/31

at

100.00

AA-

7,359,000

Wayne

County

Airport

Authority,

Michigan,

Revenue

Bonds,

Detroit

Metropolitan

Wayne

County

Airport,

Series

2015D:

3,550

5.000%,

12/01/40

12/25

at

100.00

A-

3,777,768

3,600

5.000%,

12/01/45

12/25

at

100.00

A-

3,800,448

76,580

Total

Michigan

68,222,186

Minnesota

-

2.1%

(1.2%

of

Total

Investments)

Baytown

Township,

Minnesota

Charter

School

Lease

Revenue

Bonds,

Saint

Croix

Preparatory

Academy,

Refunding

Series

2016A:

155

4.000%,

8/01/36

8/26

at

100.00

BB+

142,335

440

4.000%,

8/01/41

8/26

at

100.00

BB+

390,570

2,000

Brooklyn

Park,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Prairie

Seeds

Academy

Project,

Refunding

Series

2015A,

5.000%,

3/01/34

3/25

at

100.00

BB-

2,002,780

1,720

Deephaven,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Eagle

Ridge

Academy

Project,

Series

2015A,

5.500%,

7/01/50

7/25

at

100.00

BB+

1,764,514

Duluth

Economic

Development

Authority,

Minnesota,

Health

Care

Facilities

Revenue

Bonds,

Essentia

Health

Obligated

Group,

Series

2018A:

9,585

4.250%,

2/15/43

2/28

at

100.00

A-

9,655,354

27,325

4.250%,

2/15/48

2/28

at

100.00

A-

27,240,019

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

28

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Minnesota

(continued)

Minneapolis,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Cyber

Village

Academy

Project,

Series

2022A:

$

340

5.250%,

6/01/42

6/32

at

100.00

N/R

$

352,665

215

5.500%,

6/01/57

6/32

at

100.00

N/R

223,929

1,400

Minneapolis,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Hiawatha

Academies

Project,

Series

2022A,

5.500%,

7/01/52

(WI/DD,

Settling

8/10/22)

7/32

at

100.00

N/R

1,421,252

2,280

Minnesota

Housing

Finance

Agency,

Residential

Housing

Finance

Bonds,

Series

2020E,

2.700%,

7/01/44

7/29

at

100.00

AA+

1,940,120

Minnesota

Housing

Finance

Agency,

Residential

Housing

Finance

Bonds,

Series

2020I:

2,255

2.150%,

7/01/45

1/30

at

100.00

AA+

1,726,338

3,625

2.200%,

1/01/51

1/30

at

100.00

AA+

2,745,466

5,610

Minnesota

Housing

Finance

Agency,

Residential

Housing

Finance

Bonds,

Series

2021H,

2.550%,

1/01/46

1/31

at

100.00

N/R

4,762,161

Saint

Cloud,

Minnesota,

Charter

School

Lease

Revenue

Bonds,

Stride

Academy

Project,

Series

2016A:

405

5.000%,

4/01/36

4/26

at

100.00

N/R

336,948

605

5.000%,

4/01/46

4/26

at

100.00

N/R

455,849

2,500

Saint

Paul

Housing

and

Redevelopment

Authority,

Minnesota,

Health

Care

Facility

Revenue

Bonds,

HealthPartners

Obligated

Group,

Refunding

Series

2015A,

4.000%,

7/01/35

7/25

at

100.00

A

2,518,775

110

Saint

Paul

Housing

and

Redevelopment

Authority,

Minnesota,

Multifamily

Housing

Revenue

Bonds,

2700

University

at

Westgate

Station,

Series

2015B,

4.250%,

4/01/25

4/23

at

100.00

N/R

109,693

St.

Paul

Housing

and

Redevelopment

Authority,

Minnesota,

Hospital

Revenue

Bonds,

HealthEast

Inc.,

Series

2015A:

2,785

5.000%,

11/15/40,

(Pre-refunded

11/15/25)

11/25

at

100.00

N/R

(5)

3,050,077

3,190

5.000%,

11/15/44,

(Pre-refunded

11/15/25)

11/25

at

100.00

N/R

(5)

3,493,624

66,545

Total

Minnesota

64,332,469

Mississippi

-

0.1%

(0.1%

of

Total

Investments)

3,720

Mississippi

Development

Bank,

Special

Obligation

Bonds,

Gulfport

Water

and

Sewer

System

Project,

Series

2005,

5.250%,

7/01/24

-

AGM

Insured,

(ETM)

No

Opt.

Call

A2

(5)

3,908,753

1,000

Mississippi

Home

Corporation,

Single

Family

Mortgage

Revenue

Bonds,

Series

2021A,

2.125%,

12/01/44

6/30

at

100.00

Aaa

762,210

4,720

Total

Mississippi

4,670,963

Missouri

-

2.4%

(1.4%

of

Total

Investments)

2,600

Chesterfield

Valley

Transportation

Development

District,

Missouri,

Transportation

Sales

Tax

Revenue

Bonds,

Series

2015,

3.625%,

5/15/31

5/23

at

100.00

A-

2,608,398

Kansas

City

Industrial

Development

Authority,

Missouri,

Sales

Tax

Revenue

Bonds,

Ward

Parkway

Center

Community

Improvement

District,

Senior

Refunding

&

Improvement

Series

2016:

400

5.000%,

4/01/36,

144A

4/26

at

100.00

N/R

389,924

1,520

5.000%,

4/01/46,

144A

4/26

at

100.00

N/R

1,418,038

15,000

Kansas

City

Municipal

Assistance

Corporation,

Missouri,

Leasehold

Revenue

Bonds,

Improvement

Series

2004B-1,

0.000%,

4/15/28

-

AMBAC

Insured

No

Opt.

Call

A2

13,094,100

4,345

Kirkwood

Industrial

Development

Authority,

Missouri,

Retirement

Community

Revenue

Bonds,

Aberdeen

Heights

Project,

Refunding

Series

2017A,

5.250%,

5/15/50

5/27

at

100.00

BB

4,161,033

29

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Missouri

(continued)

Liberty,

Missouri,

Special

Obligation

Tax

Increment

and

Special

Districts

Bonds,

Liberty

Commons

Project,

Series

2015A:

$

1,575

5.750%,

6/01/35,

144A

6/25

at

100.00

N/R

$

1,522,206

1,055

6.000%,

6/01/46,

144A

6/25

at

100.00

N/R

1,027,517

2,460

Missouri

Health

and

Educational

Facilities

Authority,

Educational

Facilities

Revenue

Bonds,

Saint

Louis

College

of

Pharmacy,

Series

2013,

5.500%,

5/01/43

5/23

at

100.00

BBB

2,530,627

Missouri

Health

and

Educational

Facilities

Authority,

Educational

Facilities

Revenue

Bonds,

Saint

Louis

College

of

Pharmacy,

Series

2015B:

1,410

5.000%,

5/01/40

11/23

at

100.00

BBB

1,467,401

2,000

5.000%,

5/01/45

11/23

at

100.00

BBB

2,081,420

7,040

Missouri

Health

and

Educational

Facilities

Authority,

Health

Facilities

Revenue

Bonds,

CoxHealth,

Series

2013A,

5.000%,

11/15/48

11/23

at

100.00

A2

7,224,026

2,250

Missouri

Health

and

Educational

Facilities

Authority,

Health

Facilities

Revenue

Bonds,

Heartland

Regional

Medical

Center,

Series

2012,

5.000%,

2/15/43

8/22

at

100.00

A1

2,255,310

Missouri

Health

and

Educational

Facilities

Authority,

Health

Facilities

Revenue

Bonds,

Mosaic

Health

System,

Series

2019A:

5,820

4.000%,

2/15/44

2/29

at

100.00

A1

5,847,005

10,095

4.000%,

2/15/49

2/29

at

100.00

A1

10,124,174

405

Saint

Louis

County

Industrial

Development

Authority,

Missouri,

Revenue

Bonds,

Friendship

Village

of

Sunset

Hills,

Series

2013A,

5.875%,

9/01/43

9/23

at

100.00

BB+

409,172

Saint

Louis

County

Industrial

Development

Authority,

Missouri,

Revenue

Bonds,

Saint

Andrew's

Resources

for

Seniors,

Series

2015A:

1,650

5.000%,

12/01/35

12/25

at

100.00

N/R

1,681,284

455

5.125%,

12/01/45

12/25

at

100.00

N/R

461,147

4,125

Saint

Louis,

Missouri,

Airport

Revenue

Bonds,

Lambert-St.

Louis

International

Airport,

Series

2005,

5.500%,

7/01/29

-

NPFG

Insured

No

Opt.

Call

A-

4,899,345

15,350

Springfield

Public

Building

Corporation,

Missouri,

Lease

Revenue

Bonds,

Jordan

Valley

Park

Projects,

Series

2000A,

0.000%,

6/01/30

-

AMBAC

Insured

No

Opt.

Call

N/R

11,089,914

79,555

Total

Missouri

74,292,041

Montana

-

0.1%

(0.0%

of

Total

Investments)

Kalispell,

Montana,

Housing

and

Healthcare

Facilities

Revenue

Bonds,

Immanuel

Lutheran

Corporation,

Series

2017A:

1,175

5.250%,

5/15/37

5/25

at

102.00

N/R

1,192,766

375

5.250%,

5/15/47

5/25

at

102.00

N/R

375,754

1,550

Total

Montana

1,568,520

Nebraska

-

1.2%

(0.7%

of

Total

Investments)

10,665

Central

Plains

Energy

Project,

Nebraska,

Gas

Project

3

Revenue

Bonds,

Refunding

Crossover

Series

2017A,

5.000%,

9/01/42

No

Opt.

Call

BBB+

11,921,977

4,435

Central

Plains

Energy

Project,

Nebraska,

Gas

Project

3

Revenue

Bonds,

Series

2012,

5.000%,

9/01/32

9/22

at

100.00

BBB+

4,446,797

1,330

Douglas

County

Hospital

Authority

2,

Nebraska,

Health

Facilities

Revenue

Bonds,

Nebraska

Methodist

Health

System,

Refunding

Series

2015,

5.000%,

11/01/45

11/25

at

100.00

A

1,386,419

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

30

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Nebraska

(continued)

Douglas

County

Hospital

Authority

3,

Nebraska,

Health

Facilities

Revenue

Bonds,

Nebraska

Methodist

Health

System,

Refunding

Series

2015:

$

2,090

4.125%,

11/01/36

11/25

at

100.00

A

$

2,118,821

2,325

5.000%,

11/01/48

11/25

at

100.00

A

2,419,697

7,760

Nebraska

Investment

Finance

Authority,

Single

Family

Housing

Revenue

Bonds,

Series

2020A,

2.700%,

9/01/43

3/29

at

100.00

AA+

6,767,651

6,800

Scotts

Bluff

County

Hospital

Authority

1,

Nebraska,

Hospital

Revenue

Bonds,

Regional

West

Medical

Center

Project,

Refunding

&

Improvement

Series

2016A,

5.250%,

2/01/37

2/27

at

100.00

BB+

7,087,300

35,405

Total

Nebraska

36,148,662

Nevada

-

1.2%

(0.7%

of

Total

Investments)

410

Director

of

the

State

of

Nevada

Department

of

Business

and

Industry,

Charter

School

Lease

Revenue

Bonds,

Somerset

Academy,

Series

2018A,

5.000%,

12/15/38,

144A

12/25

at

100.00

BB

416,343

Henderson,

Nevada,

Local

Improvement

Bonds,

Local

Improvement

District

T-21

Black

Mountain

Ranch,

Series

2022:

750

3.500%,

9/01/45

9/31

at

100.00

N/R

592,965

500

4.000%,

9/01/51

9/31

at

100.00

N/R

427,855

24,115

Las

Vegas

Convention

and

Visitors

Authority,

Nevada,

Convention

Center

Expansion

Revenue

Bonds,

Series

2018B,

4.000%,

7/01/49

7/28

at

100.00

A

24,135,257

3,150

Las

Vegas

Convention

and

Visitors

Authority,

Nevada,

Revenue

Bonds,

Refunding

Series

2017B,

4.000%,

7/01/36

7/27

at

100.00

A

3,260,533

1,000

Las

Vegas,

Nevada,

Sales

Tax

Increment

Revenue

Bonds,

Symphony

Park

Tourism

Improvement

District,

Series

2016,

4.375%,

6/15/35,

144A

8/22

at

100.00

N/R

945,930

500

Neveda

State

Director

of

the

Department

of

Business

and

Industry,

Charter

School

Revenue

Bonds,

Doral

Academy

of

Nevada,

Series

2017A,

5.000%,

7/15/37,

144A

7/25

at

100.00

BB+

505,175

4,000

Reno,

Nevada,

Subordinate

Lien

Sales

Tax

Revenue

Refunding

Bonds,

ReTrac-Reno

Transporation

Rail

Access

Corridor

Project,

Series

2018A,

4.000%,

6/01/43

12/28

at

100.00

A3

4,018,000

3,500

Reno,

Nevada,

Subordinate

Lien

Sales

Tax

Revenue

Refunding

Capital

Appreciation

Bonds,

ReTrac-Reno

Transporation

Rail

Access

Corridor

Project,

Series

2018C,

0.010%,

7/01/58,

144A

7/38

at

31.26

N/R

478,240

3,210

Tahoe-Douglas

Visitors

Authority,

Nevada,

Stateline

Revenue

Bonds,

Series

2020,

5.000%,

7/01/51

7/30

at

100.00

N/R

3,293,139

41,135

Total

Nevada

38,073,437

New

Hampshire

-

1.1%

(0.7%

of

Total

Investments)

16,630

National

Finance

Authority,

New

Hampshire,

Hospital

Facilities

Revenue

Bonds,

Saint

Elizabeth

Medical

Center,

Inc.,

Series

2021A,

4.000%,

5/01/51

5/31

at

100.00

N/R

16,308,209

12,083

National

Finance

Authority,

New

Hampshire,

Municipal

Certificates

Series

2022-1

Class

A,

4.375%,

9/20/36

2022

1

No

Opt.

Call

N/R

11,986,996

5,000

National

Finance

Authority,

New

Hampshire,

Resource

Recovery

Revenue

Bonds,

Covanta

Project,

Refunding

Series

2018B,

4.625%,

11/01/42,

144A

7/23

at

100.00

B

4,938,150

1,185

National

Finance

Authority,

New

Hampshire,

Resource

Recovery

Revenue

Bonds,

Covanta

Project,

Refunding

Series

2020A,

3.625%,

7/01/43,

(Mandatory

Put

7/02/40),

144A

7/25

at

100.00

B

1,034,446

31

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

Hampshire

(continued)

$

500

New

Hampshire

Health

and

Education

Facilities

Authority,

Revenue

Bonds,

Kendal

at

Hanover,

Series

2016,

5.000%,

10/01/40

10/26

at

100.00

BBB+

$

519,365

35,398

Total

New

Hampshire

34,787,166

New

Jersey

-

6.3%

(3.8%

of

Total

Investments)

New

Jersey

Economic

Development

Authority,

School

Facilities

Construction

Bonds,

Refunding

Series

2016BBB:

34,310

5.500%,

6/15/29,

(Pre-refunded

12/15/26)

12/26

at

100.00

BBB

(5)

39,612,268

2,110

5.500%,

6/15/30,

(Pre-refunded

12/15/26)

12/26

at

100.00

BBB

(5)

2,436,079

New

Jersey

Economic

Development

Authority,

School

Facilities

Construction

Bonds,

Series

2005N-1:

6,835

5.500%,

9/01/24

-

AMBAC

Insured

No

Opt.

Call

BBB

7,295,952

5,045

5.500%,

9/01/28

-

NPFG

Insured

No

Opt.

Call

BBB

5,852,200

New

Jersey

Economic

Development

Authority,

School

Facilities

Construction

Bonds,

Series

2015WW:

11,335

5.250%,

6/15/40

6/25

at

100.00

BBB

11,834,420

655

5.250%,

6/15/40,

(Pre-refunded

6/15/25)

6/25

at

100.00

N/R

(5)

718,601

495

New

Jersey

Health

Care

Facilities

Financing

Authority,

New

Jersey,

Revenue

Bonds,

Saint

Peters

University

Hospital,

Refunding

Series

2011,

6.000%,

7/01/26

8/22

at

100.00

BB+

495,995

1,470

New

Jersey

Health

Care

Facilities

Financing

Authority,

New

Jersey,

Revenue

Bonds,

Saint

Peters

University

Hospital,

Series

2007,

5.750%,

7/01/37

8/22

at

100.00

BB+

1,472,073

3,310

New

Jersey

Health

Care

Facilities

Financing

Authority,

Revenue

Bonds,

Barnabas

Health,

Refunding

Series

2014A,

5.000%,

7/01/44

7/24

at

100.00

AA-

3,437,865

600

New

Jersey

Health

Care

Facilities

Financing

Authority,

Revenue

Bonds,

RWJ

Barnabas

Health

Obligated

Group,

Refunding

Series

2016A,

4.000%,

7/01/43

7/26

at

100.00

N/R

605,652

2,035

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Capital

Appreciation

Series

2010A,

0.000%,

12/15/26

No

Opt.

Call

BBB

1,803,946

20,000

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Refunding

Series

2006C,

0.000%,

12/15/33

-

AGM

Insured

No

Opt.

Call

BBB+

13,745,800

20,040

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Series

2014AA,

5.000%,

6/15/44

6/24

at

100.00

BBB

20,613,946

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Series

2015AA:

13,690

4.750%,

6/15/38

6/25

at

100.00

BBB

14,047,583

8,355

5.000%,

6/15/45

6/25

at

100.00

BBB

8,631,216

5,000

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Series

2019AA,

5.250%,

6/15/43

12/28

at

100.00

BBB

5,420,950

6,630

New

Jersey

Transportation

Trust

Fund

Authority,

Transportation

System

Bonds,

Series

2020AA,

5.000%,

6/15/50

12/30

at

100.00

BBB

7,092,045

33,200

New

Jersey

Turnpike

Authority,

Revenue

Bonds,

Refunding

Series

2005D-

1,

5.250%,

1/01/26

-

AGM

Insured

No

Opt.

Call

A2

36,499,416

1,150

Rutgers

State

University,

New

Jersey,

Revenue

Bonds,

Refunding

Series

2013L,

5.000%,

5/01/43,

(Pre-refunded

5/01/23)

5/23

at

100.00

A+

(5)

1,179,635

5,000

South

Jersey

Transportation

Authority,

New

Jersey,

Transportation

System

Revenue

Bonds,

Series

2020A,

4.000%,

11/01/50

11/30

at

100.00

Baa2

4,577,500

3,000

Tobacco

Settlement

Financing

Corporation,

New

Jersey,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2018A,

5.250%,

6/01/46

6/28

at

100.00

BBB+

3,175,530

3,410

Tobacco

Settlement

Financing

Corporation,

New

Jersey,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2018B,

5.000%,

6/01/46

6/28

at

100.00

BB+

3,478,848

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

32

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

Jersey

(continued)

$

1,330

Washington

Township

Board

of

Education,

Mercer

County,

New

Jersey,

General

Obligation

Bonds,

Series

2005,

5.250%,

1/01/26

-

AGM

Insured

No

Opt.

Call

A2

$

1,464,396

189,005

Total

New

Jersey

195,491,916

New

Mexico

-

0.2%

(0.1%

of

Total

Investments)

3,345

New

Mexico

Mortgage

Finance

Authority,

Single

Family

Mortgage

Program

Bonds,

Class

1

Series

2021C,

2.250%,

7/01/46

7/30

at

100.00

Aaa

2,601,708

Santa

Fe,

New

Mexico,

Retirement

Facilities

Revenue

Bonds,

EL

Castillo

Retirement

Residences

Project,

Series

2019A:

670

5.000%,

5/15/44

5/26

at

103.00

BB+

639,984

1,200

5.000%,

5/15/49

5/26

at

103.00

BB+

1,124,280

1,000

Winrock

Town

Center

Tax

Increment

Development

District

1,

Albuquerque,

New

Mexico,

Gross

Receipts

Tax

Increment

Bonds,

Senior

Lien

Series

2022,

4.250%,

5/01/40,

144A

5/29

at

103.00

N/R

891,440

6,215

Total

New

Mexico

5,257,412

New

York

-

8.3%

(5.0%

of

Total

Investments)

14,975

Build

NYC

Resource

Corporation,

New

York,

Revenue

Bonds,

Albert

Einstein

College

of

Medicine,

Inc,

Series

2015,

5.500%,

9/01/45,

144A

9/25

at

100.00

N/R

15,553,335

9,320

Build

NYC

Resource

Corporation,

New

York,

Revenue

Bonds,

Family

Life

Academy

Charter

School,

Series

2020A-1,

5.500%,

6/01/55,

144A

12/30

at

100.00

N/R

7,725,068

7,390

Build

NYC

Resource

Corporation,

New

York,

Revenue

Bonds,

Family

Life

Academy

Charter

School,

Series

2020B-1,

5.000%,

6/01/55,

144A

12/30

at

100.00

N/R

6,278,766

14,215

Dormitory

Authority

of

the

State

of

New

York,

General

Revenue

Bonds,

Northwell

Health

Obligated

Group,

Series

2022A,

4.250%,

5/01/52,

(UB)

(6)

5/32

at

100.00

N/R

14,317,917

1,535

Dormitory

Authority

of

the

State

of

New

York,

Insured

Revenue

Bonds,

Mount

Sinai

School

of

Medicine,

Series

1994A,

5.150%,

7/01/24

-

NPFG

Insured

No

Opt.

Call

Baa2

1,608,020

9,700

Dormitory

Authority

of

the

State

of

New

York,

Revenue

Bonds,

Columbia

University,

Series

2017A,

5.000%,

10/01/47,

(UB)

(6)

No

Opt.

Call

AAA

12,207,547

4,070

Dormitory

Authority

of

the

State

of

New

York,

Revenue

Bonds,

Icahn

School

of

Medicine

at

Mount

Sinai,

Refunding

Series

2015A,

5.000%,

7/01/45

7/25

at

100.00

A-

4,206,549

Dormitory

Authority

of

the

State

of

New

York,

Revenue

Bonds,

Orange

Regional

Medical

Center

Obligated

Group,

Series

2015:

2,700

5.000%,

12/01/40,

144A

6/25

at

100.00

BBB-

2,776,437

5,600

5.000%,

12/01/45,

144A

6/25

at

100.00

BBB-

5,734,288

5,000

Dormitory

Authority

of

the

State

of

New

York,

State

Personal

Income

Tax

Revenue

Bonds,

General

Purpose,

Series

2021E,

4.000%,

3/15/48

3/32

at

100.00

N/R

5,045,100

2,095

Genesee

County

Funding

Corporation,

New

York,

Revenue

Bonds,

Rochester

Regional

Health

Project,

Series

2022A,

5.250%,

12/01/52

12/32

at

100.00

N/R

2,223,884

2,120

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Refunding

Series

2020B,

5.570%,

2/01/41

2/30

at

100.00

N/R

2,181,416

2,695

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Series

2017A,

6.240%,

2/01/47

2/27

at

100.00

N/R

2,844,734

2,965

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Series

2018A,

6.760%,

2/01/48

2/28

at

100.00

N/R

3,236,890

33

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

York

(continued)

$

1,270

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Series

2020A,

5.730%,

2/01/50

2/30

at

100.00

N/R

$

1,306,576

Hempstead

Town

Local

Development

Corporation,

New

York,

Education

Revenue

Bonds,

The

Academy

Charter

School

Project,

Series

2021A:

1,210

4.450%,

2/01/41

2/30

at

100.00

A2

1,039,704

2,130

4.600%,

2/01/51

2/30

at

100.00

A2

1,752,692

Long

Island

Power

Authority,

New

York,

Electric

System

Revenue

Bonds,

Series

2012A:

6,455

5.000%,

9/01/42,

(Pre-refunded

9/01/22)

9/22

at

100.00

N/R

(5)

6,473,977

3,320

5.000%,

9/01/42,

(Pre-refunded

9/01/22)

9/22

at

100.00

N/R

(5)

3,329,761

225

5.000%,

9/01/42

9/22

at

100.00

N/R

225,556

6,850

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Bond

Anticipation

Note

Series

2020A-1,

5.000%,

2/01/23

No

Opt.

Call

N/R

6,957,134

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Green

Climate

Bond

Certified

Series

2020C-1:

2,790

5.000%,

11/15/50

5/30

at

100.00

BBB+

2,933,155

3,155

5.250%,

11/15/55

5/30

at

100.00

BBB+

3,357,772

8,390

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Green

Climate

Bond

Certified

Series

2020D-2,

4.000%,

11/15/48

11/30

at

100.00

BBB+

8,099,203

5,000

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Green

Climate

Bond

Certified

Series

2020D-3,

4.000%,

11/15/49

11/30

at

100.00

BBB+

4,820,900

2,210

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Refunding

Green

Climate

Certified

Series

2017C-1,

5.000%,

11/15/24

No

Opt.

Call

BBB+

2,338,998

7,500

Metropolitan

Transportation

Authority,

New

York,

Transportation

Revenue

Bonds,

Refunding

Green

Climate

Certified

Series

2020E,

4.000%,

11/15/45

11/30

at

100.00

BBB+

7,288,950

3,585

Monroe

County

Industrial

Development

Corporation,

New

York,

Revenue

Bonds,

Saint

Anns

Community

Project,

Series

2019,

5.000%,

1/01/50

1/26

at

103.00

N/R

3,202,480

1,000

Nassau

County

Local

Economic

Assistance

Corporation,

New

York,

Revenue

Bonds,

Catholic

Health

Services

of

Long

Island

Obligated

Group

Project,

Series

2014,

5.000%,

7/01/31

7/24

at

100.00

A-

1,033,850

7,315

Nassau

County,

New

York,

General

Obligation

Bonds,

General

Improvement

Series

2022A,

4.000%,

4/01/41

4/32

at

100.00

N/R

7,397,733

15,000

New

York

City

Housing

Development

Corporation,

New

York,  Sustainable

Impact

Revenue

Bonds,

Williamsburg

Housing

Preservation

LP,

Series

2020A,

2.800%,

2/01/50

2/28

at

100.00

Aa2

11,691,300

11,570

New

York

City

Municipal

Water

Finance

Authority,

New

York,

Water

and

Sewer

System

Second

General

Resolution

Revenue

Bonds,

Fiscal

2016

Series

BB-1,

5.000%,

6/15/46,

(UB)

(6)

6/25

at

100.00

AA+

12,261,076

5

New

York

City,

New

York,

General

Obligation

Bonds,

Fiscal

Series

2005M,

5.000%,

4/01/26

-

FGIC

Insured

8/22

at

100.00

AA-

5,013

28,615

New

York

Liberty

Development

Corporation,

New

York,

Liberty

Revenue

Bonds,

3

World

Trade

Center

Project,

Class

1

Series

2014,

5.000%,

11/15/44,

144A

11/24

at

100.00

N/R

28,812,157

15,590

New

York

Liberty

Development

Corporation,

New

York,

Liberty

Revenue

Bonds,

7

World

Trade

Center

Project,

Refunding

Green

Series

2022A-

CL2,

3.125%,

9/15/50

3/30

at

100.00

N/R

13,122,883

2,560

New

York

Liberty

Development

Corporation,

New

York,

Liberty

Revenue

Bonds,

Bank

of

America

Tower

at

One

Bryant

Park

Project,

Second

Priority

Refunding

Series

2019

Class

3,

2.800%,

9/15/69

3/29

at

100.00

Baa2

2,365,491

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

34

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

New

York

(continued)

$

3,500

New

York

State

Housing

Finance

Agency,

Affordable

Housing

Revenue

Bonds,

Climate

Bond

Certified/Sustainability

Series

2019P,

3.050%,

11/01/49

5/28

at

100.00

Aa2

$

2,905,700

6,500

New

York

State

Mortgage

Agency,

Homeowner

Mortgage

Revenue

Bonds,

Series

211,

3.750%,

10/01/43

4/27

at

100.00

Aa1

6,435,845

1,000

New

York

State

Thruway

Authority,

State

Personal

Income

Tax

Revenue

Bonds,

Bidding

Group

1

Series

2022A,

4.000%,

3/15/50

9/32

at

100.00

N/R

1,001,360

15,000

New

York

State

Urban

Development

Corporation,

State

Personal

Income

Tax

Revenue

Bonds,

General

Purpose,

Series

2020A,

4.000%,

3/15/49

9/30

at

100.00

Aa2

15,083,250

10,135

Triborough

Bridge

and

Tunnel

Authority,

New

York,

Sales

Tax

Revenue

Bonds,

MTA

Bridges

&

Tunnels,

TBTA

Capital

Lockbox-City

Sales

Tax,

Series

2022A,

4.000%,

5/15/57

11/32

at

100.00

N/R

9,951,050

7,110

TSASC

Inc.,

New

York,

Tobacco

Asset-Backed

Bonds,

Series

2006,

5.000%,

6/01/48

6/27

at

100.00

N/R

7,115,546

263,370

Total

New

York

258,249,063

North

Carolina

-

0.2%

(0.1%

of

Total

Investments)

2,150

North

Carolina

Medical

Care

Commission,

Health

Care

Facilities

Revenue

Bonds,

WakeMed,

Refunding

Series

2012A,

5.000%,

10/01/38,

(Pre-

refunded

10/01/22)

10/22

at

100.00

A2

(5)

2,162,814

2,150

North

Carolina

Medical

Care

Commission,

Retirement

Facilities

First

Mortgage

Revenue

Bonds,

Aldersgate

United

Retirement

Community

Inc.,

Refunding

Series

2017A,

5.000%,

7/01/47

7/27

at

100.00

N/R

2,150,817

1,690

North

Carolina

Turnpike

Authority,

Monroe

Expressway

Toll  Revenue

Bonds,

Series

2017A,

5.000%,

7/01/54

7/26

at

100.00

Baa3

1,738,385

935

North

Carolina

Turnpike

Authority,

Triangle

Expressway

System

Revenue

Bonds,

Senior

Lien

Series

2019,

4.000%,

1/01/55

-

AGM

Insured

1/30

at

100.00

BBB

935,673

6,925

Total

North

Carolina

6,987,689

North

Dakota

-

2.0%

(1.2%

of

Total

Investments)

9,950

Cass

County,

North

Dakota,

Health

Care

Facilities

Revenue

Bonds,

Essential

Health

Obligated

Group,

Series

2018B,

4.250%,

2/15/48

2/28

at

100.00

A-

9,919,055

4,525

Grand

Forks,

North

Dakota,

Health

Care

System

Revenue

Bonds,

Altru

Health

System

Obligated

Group,

Series

2017A,

5.000%,

12/01/42

12/27

at

100.00

BBB-

4,685,004

1,000

Grand

Forks,

North

Dakota,

Health

Care

System

Revenue

Bonds,

Altru

Health

System

Obligated

Group,

Series

2021,

3.000%,

12/01/46

-

AGM

Insured

12/31

at

100.00

BBB-

829,980

1,000

Grand

Forks,

North

Dakota,

Senior

Housing

&

Nursing

Facilities

Revenue

Bonds,

Valley

Homes

and

Services

Obligated

Group,

Series

2017,

5.000%,

12/01/36

12/26

at

100.00

N/R

959,400

4,055

North

Dakota

Housing

Finance

Agency,

Home

Mortgage

Finance

Program

Bonds,

Series

2020B,

2.500%,

7/01/44

1/30

at

100.00

Aa1

3,302,838

1,000

North

Dakota

Housing

Finance

Agency,

Home

Mortgage

Finance

Program

Bonds,

Social

Series

2022F,

4.250%,

1/01/47

(WI/DD,

Settling

8/23/22)

1/32

at

100.00

N/R

1,012,770

Ward

County

Health

Care,

North

Dakota,

Revenue

Bonds,

Trinity

Obligated

Group,

Series

2017C:

10,000

5.000%,

6/01/38

6/28

at

100.00

BBB-

10,540,500

28,050

5.000%,

6/01/53

6/28

at

100.00

BBB-

28,806,509

2,535

Williston,

North

Dakota,

Multifamily

Housing

Revenue

Bonds,

Eagle

Crest

Apartments

LLC

Project,

Series

2013,

7.750%,

9/01/38

(4)

9/23

at

100.00

N/R

1,267,500

62,115

Total

North

Dakota

61,323,556

35

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Ohio

-

9.4%

(5.7%

of

Total

Investments)

$

2,000

Akron,

Bath

and

Copley

Joint

Township

Hospital

District,

Ohio,

Hospital

Facilities

Revenue

Bonds,

Summa

Health

Obligated

Group,

Refunding

Series

2020,

3.000%,

11/15/40

11/30

at

100.00

BBB+

$

1,682,860

70,220

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Capital

Appreciation

Series

2020B-3

Class

2,

0.000%,

6/01/57

6/30

at

22.36

N/R

10,220,521

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Series

2020A-2

Class

1:

42,975

3.000%,

6/01/48

6/30

at

100.00

BBB+

34,599,173

10,060

4.000%,

6/01/48

6/30

at

100.00

BBB+

9,713,332

51,710

Buckeye

Tobacco

Settlement

Financing

Authority,

Ohio,

Tobacco

Settlement

Asset-Backed

Revenue

Bonds,

Refunding

Senior

Lien

Series

2020B-2

Class

2,

5.000%,

6/01/55

6/30

at

100.00

N/R

51,709,483

Centerville,

Ohio

Health

Care

Improvement

Revenue

Bonds,

Graceworks

Lutheran

Services,

Refunding

&

Improvement

Series

2017:

2,750

5.250%,

11/01/37

11/27

at

100.00

N/R

2,791,277

3,200

5.250%,

11/01/47

11/27

at

100.00

N/R

3,205,536

3,345

Cleveland

Heights-University

Heights

City

School

District,

Ohio,

General

Obligation

Bonds,

School

Improvement

Series

2014,

5.000%,

12/01/51,

(Pre-refunded

6/01/23)

6/23

at

100.00

A1

(5)

3,441,771

5,000

County

of

Lucas,

Ohio,

Hospital

Revenue

Bonds,

ProMedica

Healthcare

Obligated

Group,

Series

2018A,

5.250%,

11/15/48

11/28

at

100.00

Baa3

4,904,400

37,150

Cuyahoga

County,

Ohio,

Certificates

of

Participation,

Convention

Hotel

Project,  Series

2014,

4.375%,

12/01/44,

(UB)

6/24

at

100.00

A1

37,583,541

Darke

County,

Ohio,

Hospital

Facilities

Revenue

Bonds,

Wayne

Healthcare

Project,

Series

2019A:

1,165

4.000%,

9/01/40

9/29

at

100.00

BB+

1,075,563

1,750

4.000%,

9/01/45

9/29

at

100.00

BB+

1,557,675

2,000

5.000%,

9/01/49

9/29

at

100.00

BB+

1,939,600

6,840

Franklin

County

Convention

Facilities

Authority,

Ohio,

Hotel

Project

Revenue

Bonds,

Greater

Columbus

Convention

Center

Hotel

Expansion

Project,

Series

2019,

5.000%,

12/01/51

12/29

at

100.00

BBB-

7,006,007

3,985

Franklin

County,

Ohio,

Revenue

Bonds,

Trinity

Health

Credit

Group,

Series

2017A,

3.250%,

12/01/42

12/27

at

100.00

AA-

3,647,470

6,425

JobsOhio

Beverage

System,

Ohio,

Statewide

Liquor

Profits

Revenue

Bonds,

Senior

Lien

Series

2013A,

5.000%,

1/01/38,

(Pre-refunded

1/01/23)

1/23

at

100.00

Aa3

(5)

6,518,612

JobsOhio

Beverage

System,

Ohio,

Statewide

Senior

Lien

Liquor

Profits

Revenue

Bonds,

Tender

Option

Bond

Trust

2016-XG0052:

390

14.355%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

412,561

1,750

14.445%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

1,851,955

2,000

14.452%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

2,116,580

1,250

14.452%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

1,322,863

625

14.452%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

661,431

1,725

14.452%,

1/01/38,

(Pre-refunded

1/01/23),

144A,

(IF)

1/23

at

100.00

Aa3

(5)

1,825,550

Middletown

City

School

District,

Butler

County,

Ohio,

General

Obligation

Bonds,

Refunding

Series

2007:

4,380

5.250%,

12/01/27

-

AGM

Insured

No

Opt.

Call

A2

5,038,883

6,000

5.250%,

12/01/31

-

AGM

Insured

No

Opt.

Call

A2

7,157,520

12,000

Muskingum

County,

Ohio,

Hospital

Facilities

Revenue

Bonds,

Genesis

HealthCare

System

Obligated

Group

Project,

Series

2013,

5.000%,

2/15/48

2/23

at

100.00

Ba2

12,004,920

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

36

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Ohio

(continued)

$

8,500

Ohio

Air

Quality

Development

Authority,

Ohio,

Air

Quality

Development

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Series

2009A,

5.700%,

8/01/22

No

Opt.

Call

N/R

$

10,625

1,050

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Refunding

Series

2009B,

3.100%,

3/01/23

No

Opt.

Call

N/R

1,313

2,020

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Corporation

Project,

Refunding

Series

2010B,

3.750%,

6/01/33

(4)

No

Opt.

Call

N/R

2,525

1,000

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2005B,

3.125%,

1/01/34

(4)

No

Opt.

Call

N/R

1,250

25,880

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2009A,

4.750%,

6/01/33,

(Mandatory

Put

6/01/22)

No

Opt.

Call

N/R

25,987,143

490

Ohio

Higher

Educational

Facility

Commission,

Senior

Hospital

Parking

Revenue

Bonds,

University

Circle

Incorporated

2020

Project,

Series

2020,

5.000%,

1/15/50

1/30

at

100.00

A3

508,498

1,240

Ohio

State,

Turnpike

Revenue

Bonds,

Ohio

Turnpike

and

Infrastructure

Commission

Infrastructure

Projects,

Junior

Lien,

Capital

Appreciation

Series

2013A-3,

0.000%,

2/15/36

(8)

2/31

at

100.00

A+

1,441,785

4,995

Ohio

State,

Turnpike

Revenue

Bonds,

Ohio

Turnpike

and

Infrastructure

Commission

Infrastructure

Projects,

Junior

Lien,

Current

Interest

Series

2013A-1,

5.000%,

2/15/48,

(Pre-refunded

2/15/23)

2/23

at

100.00

A+

(5)

5,084,760

1,610

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Refunding

Series

2010C,

4.000%,

6/01/33

No

Opt.

Call

N/R

2,013

1,130

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2006B,

4.000%,

12/01/33

(4)

No

Opt.

Call

N/R

1,412

20,505

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2009A,

4.750%,

6/01/33,

(Mandatory

Put

6/01/22)

No

Opt.

Call

N/R

20,589,891

20,480

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2010B,

4.750%,

6/01/33,

(Mandatory

Put

6/01/22)

No

Opt.

Call

N/R

20,564,787

3,000

Port

of

Greater

Cincinnati

Development

Authority,

Ohio,

Special

Obligation

Tax

Increment

Financing

Revenue

Bonds,

Cooperative

Township

Public

Parking

Project,

Gallery

at

Kenwood,

Senior

Lien

Series

2019A,

5.000%,

11/01/51

11/30

at

100.00

N/R

2,521,530

Southeastern

Ohio

Port

Authority,

Hospital

Facilities

Revenue

Bonds,

Memorial

Health

System

Obligated

Group

Project,

Refunding

and

Improvement

Series

2012:

1,095

5.750%,

12/01/32

12/22

at

100.00

BB-

1,102,172

870

6.000%,

12/01/42

12/22

at

100.00

BB-

874,977

1,330

Tuscarawas

County

Economic

Development

and

Finance

Alliance,

Ohio,

Higher

Education

Facilities

Revenue

Bonds,

Ashland

University,

Refunding

&

Improvement

Series

2015,

6.000%,

3/01/45

3/25

at

100.00

N/R

1,357,558

375,890

Total

Ohio

294,041,323

Oklahoma

-

0.8%

(0.5%

of

Total

Investments)

Oklahoma

Development

Finance

Authority,

Health

System

Revenue

Bonds,

OU

Medicine

Project,

Series

2018B:

3,350

5.500%,

8/15/52

8/28

at

100.00

BB+

3,283,301

21,125

5.500%,

8/15/57

8/28

at

100.00

BB+

20,245,778

37

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Oklahoma

(continued)

$

2,340

Tulsa

County

Industrial

Authority,

Oklahoma,

Senior

Living

Community

Revenue

Bonds,

Montereau,

Inc

Project,

Refunding

Series

2017,

5.250%,

11/15/45

11/25

at

102.00

BBB-

$

2,436,080

26,815

Total

Oklahoma

25,965,159

Oregon

-

0.1%

(0.1%

of

Total

Investments)

Clackamas

County

Hospital

Facility

Authority,

Oregon,

Revenue

Bonds,

Rose

Villa

Inc.,

Series

2020A:

500

5.125%,

11/15/40

11/25

at

102.00

N/R

506,070

220

5.250%,

11/15/50

11/25

at

102.00

N/R

220,585

315

5.375%,

11/15/55

11/25

at

102.00

N/R

317,158

Multnomah

County

Hospital

Facilities

Authority,

Oregon,

Revenue

Bonds,

Mirabella

South

Waterfront,

Refunding

Series

2014A:

1,000

5.400%,

10/01/44

10/24

at

100.00

N/R

1,015,200

800

5.500%,

10/01/49

10/24

at

100.00

N/R

812,632

2,835

Total

Oregon

2,871,645

Pennsylvania

-

5.5%

(3.3%

of

Total

Investments)

14,855

Allegheny

County

Hospital

Development

Authority,

Pennsylvania,

Revenue

Bonds,

Allegheny

Health

Network

Obligated

Group

Issue,

Series

2018A,

4.000%,

4/01/44

4/28

at

100.00

A

14,772,109

2,540

Allentown

Neighborhood

Improvement

Zone

Development

Authority,

Pennsylvania,

Tax

Revenue

Bonds,

City

Center

Refunding

Project,

Series

2017,

5.000%,

5/01/42,

144A

5/27

at

100.00

Ba3

2,611,019

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Project,

Refunding

Series

2006A:

13,235

4.375%,

1/01/35,

(Mandatory

Put

7/01/22)

No

Opt.

Call

N/R

13,308,587

3,145

3.500%,

4/01/41

(4)

No

Opt.

Call

N/R

3,931

1,245

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2005A,

4.000%,

1/01/35

(4)

No

Opt.

Call

N/R

1,556

1,240

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006B,

3.500%,

12/01/35

(4)

No

Opt.

Call

N/R

1,550

9,365

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Generation

Project,

Series

2008B,

3.750%,

10/01/47

4/31

at

100.00

N/R

7,812,189

20,945

Berks

County

Industrial

Development

Authority,

Pennsylvania,

Health

System

Revenue

Bonds,

Tower

Health

Project,

Series

2017,

5.000%,

11/01/50

11/27

at

100.00

B+

16,285,575

Bucks

County

Industrial

Development

Authority,

Pennsylvania,

Revenue

Bonds,

School

Lane

Charter

School

Project,

Series

2016:

2,410

5.125%,

3/15/36

3/27

at

100.00

BBB-

2,532,838

6,420

5.125%,

3/15/46

3/27

at

100.00

BBB-

6,650,028

10,850

Commonwealth

Financing

Authority,

Pennsylvania,

State

Appropriation

Lease

Bonds,

Master

Settlement,

Series

2018,

4.000%,

6/01/39

-

AGM

Insured,

(UB)

(6)

6/28

at

100.00

A1

10,981,285

Cumberland

County

Municipal

Authority,

Pennsylvania,

Revenue

Bonds,

Diakon

Lutheran

Social

Ministries

Project,

Series

2015:

395

5.000%,

1/01/29,

(Pre-refunded

1/01/25)

1/25

at

100.00

N/R

(5)

425,865

170

5.000%,

1/01/29,

(Pre-refunded

1/01/25)

1/25

at

100.00

N/R

(5)

183,284

435

5.000%,

1/01/29

1/25

at

100.00

N/R

451,495

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

38

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Pennsylvania

(continued)

$

3,000

Dubois

Hospital

Authority,

Pennsylvania,

Hospital

Revenue

Bonds,

Penn

Highlands

Healthcare,

Series

2018,

5.000%,

7/15/48

1/28

at

100.00

A-

$

3,146,160

1,250

Lancaster

County

Hospital

Authority,

Pennsylvania,

Revenue

Bonds,

Landis

Homes

Retirement

Community

Project,

Refunding

Series

2015A,

5.000%,

7/01/45

7/25

at

100.00

BBB-

1,263,438

Lehigh

County

Authority,

Pennsylvania,

Water

and

Sewer

Revenue

Bonds,

Allentown

Concession,

Series

2013A:

815

5.125%,

12/01/47,

(Pre-refunded

12/01/23)

12/23

at

100.00

N/R

(5)

853,248

695

5.125%,

12/01/47

12/23

at

100.00

A

723,488

Montgomery

County

Industrial

Development

Authority,

Pennsylvania,

Health

System

Revenue

Bonds,

Albert

Einstein

Healthcare

Network

Issue,

Series

2015A:

11,030

5.250%,

1/15/45,

(Pre-refunded

1/15/25)

1/25

at

100.00

Ba1

(5)

11,902,363

1,200

5.250%,

1/15/46,

(Pre-refunded

1/15/25)

1/25

at

100.00

Ba1

(5)

1,294,908

10,765

Pennsylvania

Economic

Development

Financing

Authority,

Exempt

Facilities

Revenue

Refunding

Bonds,

PPL

Energy

Supply,

LLC

Project,

Series

2009A,

6.400%,

12/01/38

(4)

9/25

at

100.00

CCC

6,674,300

3,500

Pennsylvania

Housing

Finance

Agency,

Single

Family

Mortgage

Revenue

Bonds,

Series

2019-131A,

3.100%,

10/01/44

4/29

at

100.00

AA+

3,017,140

3,415

Pennsylvania

Housing

Finance

Agency,

Single

Family

Mortgage

Revenue

Bonds,

Social

Series

2021-135A,

2.500%,

10/01/50

10/30

at

100.00

AA+

2,482,739

13,550

Pennsylvania

Turnpike

Commission,

Oil

Franchise

Tax

Revenue

Bonds,

Senior

Series

2018A,

5.250%,

12/01/44

12/28

at

100.00

Aa3

15,254,861

3,705

Pennsylvania

Turnpike

Commission,

Turnpike

Revenue

Bonds,

Series

2015A-1,

5.000%,

12/01/45

6/25

at

100.00

A+

3,874,504

6,450

Pennsylvania

Turnpike

Commission,

Turnpike

Revenue

Bonds,

Series

2018A-2,

5.000%,

12/01/43

12/28

at

100.00

A1

7,033,725

11,000

Pennsylvania

Turnpike

Commission,

Turnpike

Revenue

Bonds,

Subordinate

Series

2009C,

6.250%,

6/01/33

-

AGM

Insured

6/26

at

100.00

A2

12,565,410

15,000

Pennsylvania

Turnpike

Commission,

Turnpike

Revenue

Bonds,

Subordinate

Series

2015B-1,

5.000%,

12/01/45

12/25

at

100.00

A3

15,623,100

5,000

Pennsylvania

Turnpike

Commission,

Turnpike

Revenue

Bonds,

Subordinate

Series

2019A,

4.000%,

12/01/49

12/29

at

100.00

A3

4,872,400

5,790

Susquehanna

Area

Regional

Airport

Authority,

Pennsylvania,

Airport

System

Revenue

Bonds,

Series

2012B,

4.000%,

1/01/33

1/23

at

100.00

Baa3

5,794,806

183,415

Total

Pennsylvania

172,397,901

Puerto

Rico

-

6.5%

(4.0%

of

Total

Investments)

4,934

Cofina

Class

2

Trust

Tax-Exempt

Class

2047,

Puerto

Rico.

Unit

Exchanged

From

Cusip

74529JAN5,

0.000%,

8/01/47

No

Opt.

Call

N/R

1,702,790

9,761

Cofina

Class

2

Trust

Tax-Exempt

Class

2054,

Puerto

Rico.

Unit

Exchanged

From

Cusip

74529JAP0,

0.000%,

8/01/54

No

Opt.

Call

N/R

2,399,626

10,280

Puerto

Rico

Aqueduct

and

Sewerage

Authority,

Revenue

Bonds,

Refunding

Senior

Lien

Forward

Delivery

Series

2022A,

5.000%,

7/01/37,

144A

7/32

at

100.00

N/R

10,695,312

Puerto

Rico

Aqueduct

and

Sewerage

Authority,

Revenue

Bonds,

Refunding

Senior

Lien

Series

2020A:

2,000

5.000%,

7/01/30,

144A

No

Opt.

Call

N/R

2,105,520

26,925

5.000%,

7/01/47,

144A

7/30

at

100.00

N/R

27,274,756

39

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Puerto

Rico

(continued)

Puerto

Rico

Aqueduct

and

Sewerage

Authority,

Revenue

Bonds,

Refunding

Senior

Lien

Series

2021B:

$

1,910

5.000%,

7/01/37,

144A

7/31

at

100.00

N/R

$

1,980,823

7,510

4.000%,

7/01/42,

144A

7/31

at

100.00

N/R

6,762,605

8,070

4.000%,

7/01/47,

144A

7/31

at

100.00

N/R

7,073,355

600

Puerto

Rico

Highway

and

Transportation

Authority,

Highway

Revenue

Bonds,

Series

2004J,

5.000%,

7/01/29

-

NPFG

Insured

8/22

at

100.00

Baa2

601,434

425

Puerto

Rico

Public

Finance

Corporation,

Commonwealth

Appropriation

Bonds,

Series

1998A,

5.125%,

6/01/24

-

AMBAC

Insured

No

Opt.

Call

AA+

441,277

Puerto

Rico

Sales

Tax

Financing

Corporation,

Sales

Tax

Revenue

Bonds,

Restructured

2018A-1:

3,014

0.000%,

7/01/31

7/28

at

91.88

N/R

2,112,482

9,828

0.000%,

7/01/33

7/28

at

86.06

N/R

6,164,613

260

4.500%,

7/01/34

7/25

at

100.00

N/R

263,656

18,435

0.000%,

7/01/46

7/28

at

41.38

N/R

5,373,434

16,194

0.000%,

7/01/51

7/28

at

30.01

N/R

3,506,001

16,321

4.750%,

7/01/53

7/28

at

100.00

N/R

16,320,347

19,187

5.000%,

7/01/58

7/28

at

100.00

N/R

19,401,319

723

Puerto

Rico

Sales

Tax

Financing

Corporation,

Sales

Tax

Revenue

Bonds,

Restructured

Cofina

Project

Series

2019B-2,

4.536%,

7/01/53

7/28

at

100.00

N/R

698,028

Puerto

Rico

Sales

Tax

Financing

Corporation,

Sales

Tax

Revenue

Bonds,

Taxable

Restructured

Cofina

Project

Series

2019A-2:

7,970

4.329%,

7/01/40

7/28

at

100.00

N/R

7,910,305

29,258

4.329%,

7/01/40

7/28

at

100.00

N/R

29,038,857

10,514

4.784%,

7/01/58

7/28

at

100.00

N/R

10,511,056

Puerto

Rico,

General

Obligation

Bonds,

Restructured

Series

2022A-1:

3,299

5.625%,

7/01/29

No

Opt.

Call

N/R

3,651,366

1,445

5.750%,

7/01/31

No

Opt.

Call

N/R

1,624,903

17,024

0.010%,

7/01/33

7/31

at

89.94

N/R

10,145,623

8,231

4.000%,

7/01/33

7/31

at

103.00

N/R

7,899,778

7,582

4.000%,

7/01/35

7/31

at

103.00

N/R

7,177,880

9,479

4.000%,

7/01/37

7/31

at

103.00

N/R

8,879,453

1,067

4.000%,

7/01/41

7/31

at

103.00

N/R

982,856

938

4.000%,

7/01/46

7/31

at

103.00

N/R

848,008

253,184

Total

Puerto

Rico

203,547,463

Rhode

Island

-

2.0%

(1.2%

of

Total

Investments)

1,000

Rhode

Island

Health

and

Educational

Building

Corporation,

Revenue

Bonds,

Care

New

England

Health

System,

Series

2013A,

6.000%,

9/01/33,

(Pre-refunded

9/01/23)

9/23

at

100.00

N/R

(5)

1,047,220

3,425

Rhode

Island

Housing

&

Mortgage

Finance

Corporation,

Homeownership

Opportunity

Bond

Program,

2019

Series

71,

3.100%,

10/01/44

4/29

at

100.00

AA+

3,165,625

10,445

Rhode

Island

Housing

&

Mortgage

Finance

Corporation,

Homeownership

Opportunity

Bond

Program,

2022

Series

76A,

2.550%,

10/01/42

4/31

at

100.00

N/R

8,513,511

295,135

Rhode

Island

Tobacco

Settlement

Financing

Corporation,

Tobacco

Settlement

Asset-Backed

Bonds,

Series

2007A,

0.000%,

6/01/52

8/22

at

17.18

CCC-

50,597,944

310,005

Total

Rhode

Island

63,324,300

South

Carolina

-

2.6%

(1.6%

of

Total

Investments)

7,600

Piedmont

Municipal

Power

Agency,

South

Carolina,

Electric

Revenue

Bonds,

Series

2004A-2,

0.000%,

1/01/31

-

AMBAC

Insured

No

Opt.

Call

A-

5,841,892

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

40

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

South

Carolina

(continued)

South

Carolina

Jobs-Economic

Development

Authority,

Economic

Development

Revenue

Bonds,

Bishop

Gadsden

Episcopal

Retirement

Community,

Series

2019A:

$

890

5.000%,

4/01/49

4/26

at

103.00

BBB-

$

892,937

1,165

4.000%,

4/01/54

4/26

at

103.00

BBB-

935,215

1,630

5.000%,

4/01/54

4/26

at

103.00

BBB-

1,630,799

South

Carolina

Jobs-Economic

Development

Authority,

Economic

Development

Revenue

Bonds,

Hilton

Head

Christian

Academy,

Series

2020:

405

5.000%,

1/01/40,

144A

1/30

at

100.00

N/R

385,086

1,000

5.000%,

1/01/55,

144A

1/30

at

100.00

N/R

894,300

South

Carolina

Jobs-Economic

Development

Authority,

Health

Facilities

Revenue

Bonds,

Lutheran

Homes

of

South

Carolina

Inc.,

Refunding

Series

2017B:

1,000

5.000%,

5/01/37

5/23

at

104.00

N/R

969,480

750

5.000%,

5/01/42

5/23

at

104.00

N/R

705,105

4,000

South

Carolina

Jobs-Economic

Development

Authority,

Hospital

Revenue

Bonds,

Prisma

Health

Obligated

Group,

Series

2018A,

5.000%,

5/01/48

5/28

at

100.00

A3

4,242,040

11,615

South

Carolina

Public

Service

Authority,

Santee

Cooper

Revenue

Obligations,

Refunding

&

Improvement

Series

2015A,

5.000%,

12/01/50

6/25

at

100.00

N/R

11,911,880

34,000

South

Carolina

Public

Service

Authority,

Santee

Cooper

Revenue

Obligations,

Refunding

&

Improvement

Series

2015A,

5.000%,

12/01/50,

(UB)

6/25

at

100.00

N/R

34,869,040

8,630

South

Carolina

Public

Service

Authority,

Santee

Cooper

Revenue

Obligations,

Refunding

&

Improvement

Series

2020A,

5.000%,

12/01/43

12/30

at

100.00

A-

9,275,006

5,085

South

Carolina

Public

Service

Authority,

Santee

Cooper

Revenue

Obligations,

Refunding

Series

2014C,

5.000%,

12/01/46

12/24

at

100.00

N/R

5,219,498

5,000

South

Carolina

Public

Service

Authority,

Santee

Cooper

Revenue

Obligations,

Refunding

Series

2022A,

4.000%,

12/01/55

6/32

at

100.00

N/R

4,754,000

82,770

Total

South

Carolina

82,526,278

South

Dakota

-

1.2%

(0.7%

of

Total

Investments)

15,050

South

Dakota

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Avera

Health,

Refunding

Series

2017,

5.000%,

7/01/46

7/27

at

100.00

A1

15,885,877

11,400

South

Dakota

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Monument

Health,

Inc.,

Series

2020A,

4.000%,

9/01/50

9/30

at

100.00

A1

11,279,958

3,765

South

Dakota

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Regional

Health,

Refunding

Series

2017,

5.000%,

9/01/40

9/27

at

100.00

A1

3,960,931

6,000

South

Dakota

Housing

Development

Authority,

Homeownership

Mortgage

Revenue

Bonds,

Series

2022B,

2.500%,

11/01/42

11/30

at

100.00

N/R

4,957,200

36,215

Total

South

Dakota

36,083,966

Tennessee

-

0.7%

(0.4%

of

Total

Investments)

12,895

Chattanooga

Health,

Educational

and

Housing

Facility

Board,

Tennessee,

Revenue

Bonds,

Catholic

Health

Initiatives,

Series

2013A,

5.250%,

1/01/45,

(Pre-refunded

1/01/23)

1/23

at

100.00

BBB+

(5)

13,088,038

1,850

Chattanooga-Hamilton

County

Hospital

Authority,

Tennessee,

Hospital

Revenue

Bonds,

Erlanger

Health

System,

Refunding

Series

2014A,

5.000%,

10/01/39

10/24

at

100.00

Baa3

1,943,721

2,000

Knox

County

Health,

Educational

and

Housing

Facility

Board,

Tennessee,

Hospital

Revenue

Bonds,

East

Tennessee

Children's

Hospital,

Series

2019,

4.000%,

11/15/48

2/29

at

100.00

A

1,940,880

2,645

Memphis/Shelby

County

Economic

Development

Growth

Engine

Industrial

Development

Board,

Tennessee,

Tax

Increment

Revenue

Bonds,

Graceland

Project,

Senior

Series

2017A,

5.500%,

7/01/37

7/27

at

100.00

N/R

2,177,946

41

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Tennessee

(continued)

$

880

Tennessee

Housing

Development

Agency,

Residential

Finance

Program

Bonds,

Series

2020-3A,

2.550%,

1/01/45

7/29

at

100.00

AA+

$

718,274

10,000

The

Health

and

Educational

Facilities

Board

of

the

City

of

Franklin,

Tennessee,

Revenue

Bonds,

Provision

Cares

Proton

Therapy

Center,

Nashville

Project,

Series

2017A,

7.500%,

6/01/47,

144A

(4)

6/27

at

100.00

N/R

2,700,000

30,270

Total

Tennessee

22,568,859

Texas

-

11.5%

(6.9%

of

Total

Investments)

3,465

Aubrey,

Denton

County,

Texas,

Special

Assessment

Revenue

Bonds,

Jackson

Ridge

Public

Improvement

District

Phase

1

Project,

Series

2015,

7.250%,

9/01/45

9/23

at

103.00

N/R

3,553,219

2,980

Aubrey,

Denton

County,

Texas,

Special

Assessment

Revenue

Bonds,

Jackson

Ridge

Public

Improvement

District

Phases

2-3

Major

Improvements

Project,

Series

2015,

8.250%,

9/01/40

9/23

at

103.00

N/R

3,059,119

5,480

Austin,

Texas,

Electric

Utility

System

Revenue

Bonds,

Refunding

Series

2015A,

5.000%,

11/15/45,

(UB)

(6)

11/25

at

100.00

Aa3

5,802,334

2,500

Board

of

Managers,

Joint

Guadalupe

County-Seguin

City

Hospital,

Texas,

Hospital

Mortgage

Revenue

Bonds,

Refunding

&

Improvement

Series

2015,

5.000%,

12/01/45

12/25

at

100.00

BB

2,524,850

2,225

Celina,

Texas,

Special

Assessment

Revenue

Bonds,

Sutton

Fields

II

Public

Improvement

District

Neighborhood

Improvement

Area

1

Project,

Series

2015,

7.250%,

9/01/45

3/23

at

103.00

N/R

2,246,338

3,960

Celina,

Texas,

Special

Assessment

Revenue

Bonds,

Sutton

Fields

II

Public

Improvement

District

Neighborhood

Improvement

Areas

2-5

Major

Improvement

Project,

Series

2015,

8.250%,

9/01/40

3/23

at

103.00

N/R

4,006,332

360

Celina,

Texas,

Special

Assessment

Revenue

Bonds,

Wells

South

Public

Improvement

District

Neighborhood

Improvement

Area

1

Project,

Series

2015,

6.250%,

9/01/45

9/24

at

100.00

N/R

363,038

Central

Texas

Regional

Mobility

Authority,

Revenue

Bonds,

Senior

Lien

Series

2020A:

3,000

5.000%,

1/01/44

1/30

at

100.00

Baa1

3,249,030

3,940

5.000%,

1/01/49

1/30

at

100.00

Baa1

4,240,464

3,335

Central

Texas

Regional

Mobility

Authority,

Revenue

Bonds,

Senior

Lien

Series

2020E,

5.000%,

1/01/45

1/30

at

100.00

Baa1

3,604,335

13,685

Central

Texas

Regional

Mobility

Authority,

Revenue

Bonds,

Senior

Lien,

Series

2015A,

5.000%,

1/01/45,

(Pre-refunded

7/01/25)

7/25

at

100.00

Baa1

(5)

14,954,968

6,375

Central

Texas

Regional

Mobility

Authority,

Revenue

Bonds,

Senior

Lien,

Series

2016,

3.375%,

1/01/41

1/26

at

100.00

Baa1

5,724,686

270

Clifton

Higher

Education

Finance

Corporation,

Texas,

Education

Revenue

Bonds,

Idea

Public

Schools,

Series

2012,

3.750%,

8/15/22

No

Opt.

Call

A-

270,184

Clifton

Higher

Education

Finance

Corporation,

Texas,

Education

Revenue

Bonds,

Uplift

Education

Charter

School,

Series

2013A:

765

4.350%,

12/01/42

12/22

at

100.00

BBB-

765,038

685

4.400%,

12/01/47

12/22

at

100.00

BBB-

681,459

4,000

Clifton

Higher

Education

Finance

Corporation,

Texas,

Education

Revenue

Bonds,

Uplift

Education

Charter

School,

Series

2015A,

5.000%,

12/01/45

6/25

at

100.00

BBB-

4,093,760

Club

Municipal

Management

District

1,

Texas,

Special

Assessment

Revenue

Bonds,

Improvement

Area

1

Project,

Series

2016:

515

5.750%,

9/01/28

9/23

at

103.00

N/R

538,767

725

6.500%,

9/01/46

9/23

at

103.00

N/R

757,980

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

42

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Texas

(continued)

$

2,520

Decatur

Hospital

Authority,

Texas,

Revenue

Bonds,

Wise

Regional

Health

System,

Series

2013A,

6.375%,

9/01/42,

(Pre-refunded

9/01/23)

9/23

at

100.00

N/R

(5)

$

2,646,000

400

Decatur

Hospital

Authority,

Texas,

Revenue

Bonds,

Wise

Regional

Health

System,

Series

2014A,

5.250%,

9/01/44

9/24

at

100.00

BBB-

407,320

1,255

Fort

Bend

County

Industrial

Development

Corporation,

Texas,

Revenue

Bonds,

NRG

Energy

Inc.

Project,

Series

2012A.

RMKT,

4.750%,

5/01/38

11/22

at

100.00

Baa2

1,258,238

8,920

Fort

Bend

County

Industrial

Development

Corporation,

Texas,

Revenue

Bonds,

NRG

Energy

Inc.

Project,

Series

2012B,

4.750%,

11/01/42

11/22

at

100.00

Baa2

8,936,145

Grand

Parkway

Transportation

Corporation,

Texas,

System

Toll

Revenue

Bonds,

Subordinate

Lien

Series

2013B:

20,000

5.250%,

10/01/51,

(Pre-refunded

10/01/23)

10/23

at

100.00

AA

(5)

20,855,800

10,000

5.000%,

4/01/53,

(Pre-refunded

10/01/23),

(UB)

10/23

at

100.00

AA

(5)

10,399,200

Grand

Parkway

Transportation

Corporation,

Texas,

System

Toll

Revenue

Bonds,

Tender

Option

Bond

Trust

2015-XF0228:

5,470

14.571%,

11/01/44,

(Pre-refunded

10/01/23),

144A,

(IF)

10/23

at

100.00

AA

(5)

6,343,778

4,255

Harris

County

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Revenue

Bonds,

Houston

Methodist

Hospital

System,

Series

2015,

5.000%,

12/01/45

6/25

at

100.00

AA

4,444,986

4,080

Harris

County,

Texas,

General

Obligtion

Toll

Road

Revenue

Bonds,

Tender

Option

Bond

Trust

2015-XF0074,

11.606%,

8/15/32

-

AGM

Insured,

144A,

(IF)

No

Opt.

Call

AAA

7,095,324

6,000

Harris

County-Houston

Sports

Authority,

Texas,

Revenue

Bonds,

Capital

Appreciation

Refunding

Senior

Lien

Series

2014A,

0.000%,

11/15/48

11/31

at

44.13

A2

1,714,440

6,000

Harris

County-Houston

Sports

Authority,

Texas,

Revenue

Bonds,

Refunding

Senior

Lien

Series

2014A,

5.000%,

11/15/53

11/24

at

100.00

BBB

6,158,760

Harris

County-Houston

Sports

Authority,

Texas,

Revenue

Bonds,

Third

Lien

Series

2004A-3:

14,055

0.000%,

11/15/34

-

NPFG

Insured

11/24

at

55.69

BB

7,087,093

1,940

0.000%,

11/15/34,

(Pre-refunded

11/15/24)

-

NPFG

Insured

11/24

at

55.69

Baa2

(5)

1,032,585

Hidalgo

County

Regional

Mobility

Authority,

Texas,

Toll

and

Vehicle

Registration

Fee

Revenue

Bonds,

Senior

Lien

Series

2022A:

2,295

0.010%,

12/01/42

12/31

at

68.27

N/R

838,662

3,000

0.010%,

12/01/43

12/31

at

65.48

N/R

1,029,150

3,000

0.010%,

12/01/44

12/31

at

62.57

N/R

969,480

4,000

0.010%,

12/01/45

12/31

at

59.85

N/R

1,220,080

7,165

0.010%,

12/01/46

12/31

at

57.36

N/R

2,059,651

7,580

0.010%,

12/01/47

12/31

at

55.10

N/R

2,065,019

7,095

0.010%,

12/01/48

12/31

at

52.91

N/R

1,840,869

7,550

0.010%,

12/01/49

12/31

at

50.78

N/R

1,851,184

5,140

0.010%,

12/01/50

12/31

at

48.73

N/R

1,188,625

4,000

0.010%,

12/01/51

12/31

at

46.73

N/R

874,840

5,000

Houston

Higher

Education

Finance

Corporation,

Texas,

Education

Revenue

Bonds,

KIPP,

Inc.,

Refunding

Series

2015,

4.000%,

8/15/44

8/25

at

100.00

AAA

5,042,750

Houston,

Texas,

Hotel

Occupancy

Tax

and

Special

Revenue

Bonds,

Convention

and

Entertainment

Project,

Series

2001B:

4,090

0.000%,

9/01/26

-

AMBAC

Insured

No

Opt.

Call

A2

3,689,262

4,865

0.000%,

9/01/27

-

AGM

Insured

No

Opt.

Call

A2

4,259,891

4,715

Houston,

Texas,

Hotel

Occupancy

Tax

and

Special

Revenue

Bonds,

Refunding

Series

2015,

5.000%,

9/01/40

9/24

at

100.00

A

4,874,084

17,000

Houston,

Texas,

Water

and

Sewerage

System

Revenue

Bonds,

Refunding

Junior

Lien

Series

2002A,

5.750%,

12/01/32

-

AGM

Insured,

(ETM)

No

Opt.

Call

A2

(5)

22,208,460

43

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Texas

(continued)

$

940

Kerrville

Health

Facilities

Development

Corporation,

Texas,

Revenue

Bonds,

Sid

Peterson

Memorial

Hospital

Project,

Series

2015,

5.000%,

8/15/30

8/25

at

100.00

A-

$

992,997

1,000

Lower

Colorado

River

Authority,

Texas,

Transmission

Contract

Revenue

Bonds,

LCRA

Transmission

Services

Corporation

Project,

Refunding

Series

2015,

5.000%,

5/15/45

5/25

at

100.00

A

1,045,340

McCamey

County

Hospital

District,

Texas,

General

Obligation

Bonds,

Series

2013:

3,095

5.750%,

12/01/33

12/25

at

100.00

B1

3,194,504

3,125

6.125%,

12/01/38

12/25

at

100.00

B1

3,233,125

Montgomery

County

Toll

Road

Authority,

Texas,

Toll

Road

Revenue

Bonds,

Senior

Lien

Series

2018:

1,900

5.000%,

9/15/43

9/25

at

100.00

BBB-

1,964,790

1,785

5.000%,

9/15/48

9/25

at

100.00

BBB-

1,840,139

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Retirement

Facility

Revenue

Bonds,

Legacy

at

Willow

Bend

Project,

Series

2016:

2,335

5.000%,

11/01/46

11/23

at

103.00

BBB-

2,116,537

6,015

5.000%,

11/01/51

11/23

at

103.00

BBB-

5,355,395

745

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Retirement

Facility

Revenue

Bonds,

Wesleyan

Homes,

Inc.

Project,

Series

2014,

5.500%,

1/01/43

1/25

at

100.00

N/R

705,634

210

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Corpus

Christi

II,

L.L.C.-Texas

A&M

University-Corpus

Christi

Project,

Series

2016A,

5.000%,

4/01/48,

(Pre-refunded

4/01/26)

4/26

at

100.00

N/R

(5)

232,785

4,530

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Foundation

-

College

Station

I

LLC

-

Texas

A&M

University

Project,

Series

2014A,

4.100%,

4/01/34

-

AGM

Insured

4/24

at

100.00

A2

4,598,176

820

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Foundation

-

San

Antonio

1,

L.L.C.

-

Texas

A&M

University

-

San

Antonio

Project,

Series

2016A,

5.000%,

4/01/48,

(Pre-refunded

4/01/26)

4/26

at

100.00

N/R

(5)

908,970

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Foundation

-

Stephenville

II,

L.L.C.

-

Tarleton

State

University

Project,

Series

2014A:

1,000

5.000%,

4/01/34,

(Pre-refunded

4/01/24)

4/24

at

100.00

N/R

(5)

1,053,910

2,200

5.000%,

4/01/39,

(Pre-refunded

4/01/24)

4/24

at

100.00

N/R

(5)

2,318,602

1,600

5.000%,

4/01/46,

(Pre-refunded

4/01/24)

4/24

at

100.00

N/R

(5)

1,686,256

5,540

New

Hope

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Student

Housing

Revenue

Bonds,

CHF-Collegiate

Housing

Galveston-

Texas

A&M

University

at

Galveston

Project,

Series

2014A,

5.000%,

4/01/39,

(Pre-refunded

4/01/24)

4/24

at

100.00

N/R

(5)

5,829,299

North

Texas

Tollway

Authority,

Special

Projects

System

Revenue

Bonds,

Convertible

Capital

Appreciation

Series

2011C:

2,590

0.000%,

9/01/43,

(Pre-refunded

9/01/31)

(8)

9/31

at

100.00

N/R

(5)

3,286,503

3,910

6.750%,

9/01/45,

(Pre-refunded

9/01/31)

9/31

at

100.00

N/R

(5)

5,209,840

6,155

North

Texas

Tollway

Authority,

System

Revenue

Bonds,

Refunding

First

Tier,

Series

2015B,

5.000%,

1/01/40

1/23

at

100.00

A+

6,214,396

2,000

North

Texas

Tollway

Authority,

System

Revenue

Bonds,

Refunding

Second

Tier,

Series

2015A,

5.000%,

1/01/38

1/25

at

100.00

A

2,102,340

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

44

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Texas

(continued)

$

610

Reagan

Hospital

District

of

Reagan

County,

Texas,

Limited

Tax

Revenue

Bonds,

Series

2014A,

5.125%,

2/01/39

2/24

at

100.00

Ba1

$

625,354

1,000

Red

River

Education

Finance

Corporation,

Texas,

Higher

Education

Revenue

Bonds,

Saint

Edward?s

University

Project,

Series

2016,

4.000%,

6/01/41

6/26

at

100.00

BBB

1,000,860

1,870

Tarrant

County

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Hospital

Revenue

Bonds,

Hendrick

Medical

Center,

Refunding

Series

2013,

5.500%,

9/01/43,

(Pre-refunded

9/01/23)

9/23

at

100.00

A3

(5)

1,947,512

7,585

Tarrant

County

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Hospital

Revenue

Bonds,

Scott

&

White

Healthcare

Project,

Series

2016A,

5.000%,

11/15/45

5/26

at

100.00

AA-

8,006,271

10,055

Tarrant

County

Cultural

Education

Facilities

Finance

Corporation,

Texas,

Hospital

Revenue

Bonds,

Scott

&

White

Healthcare

Project,

Series

2016A,

5.000%,

11/15/45,

(UB)

(6)

5/26

at

100.00

AA-

10,613,455

4,065

Texas

City

Industrial

Development

Corporation,

Texas,

Industrial

Development

Revenue

Bonds,

NRG

Energy,

inc.

Project,

Fixed

Rate

Series

2012,

4.125%,

12/01/45

2/25

at

100.00

Baa2

4,076,788

2,810

Texas

Department

of

Housing

and

Community

Affairs,

Single

Family

Mortgage

Revenue

Bonds,

Series

2018A,

4.250%,

9/01/43

9/27

at

100.00

AA+

2,843,242

Texas

Department

of

Housing

and

Community

Affairs,

Single

Family

Mortgage

Revenue

Bonds,

Series

2021A:

7,175

2.250%,

9/01/46

3/30

at

100.00

AA+

5,420,066

6,925

2.350%,

9/01/51

3/30

at

100.00

AA+

5,101,994

Texas

Private

Activity

Bond

Surface

Transportation

Corporation,

Senior

Lien

Revenue

Bonds,

LBJ

Infrastructure

Group

LLC

IH-635

Managed

Lanes

Project,

Refunding  Series

2020A:

5,810

4.000%,

12/31/36

12/30

at

100.00

BBB-

5,857,119

2,735

4.000%,

6/30/37

12/30

at

100.00

BBB-

2,750,672

Texas

Transportation

Commission,

Central

Texas

Turnpike

System

Revenue

Bonds,

Refunding

First

Tier

Series

2015B:

11,280

0.000%,

8/15/36

8/24

at

59.60

A3

6,186,290

10,000

0.000%,

8/15/37

8/24

at

56.94

A3

5,224,800

Texas

Transportation

Commission,

Central

Texas

Turnpike

System

Revenue

Bonds,

Refunding

Second

Tier

Series

2015C:

5,230

5.000%,

8/15/37

8/24

at

100.00

Baa1

5,397,465

31,810

5.000%,

8/15/42

8/24

at

100.00

Baa1

32,682,230

7,500

Texas

Transportation

Commission,

State

Highway

249

System

Revenue

Bonds,

First

Tier

Toll

Series

2019A,

5.000%,

8/01/57

2/29

at

100.00

Baa3

7,799,925

4,400

Texas

Turnpike

Authority,

Central

Texas

Turnpike

System

Revenue

Bonds,

First

Tier

Series

2002A,

0.000%,

8/15/25

-

AMBAC

Insured

No

Opt.

Call

A3

4,086,544

1,415

Ysleta

Independent

School

District

Public

Facility

Corporation,

Texas,

Lease

Revenue

Refunding

Bonds,

Series

2001,

5.375%,

11/15/24

-

AMBAC

Insured

11/22

at

100.00

AA-

1,427,693

403,425

Total

Texas

357,765,395

Utah

-

0.1%

(0.1%

of

Total

Investments)

Black

Desert

Public

Infrastructure

District,

Limited

Tax

General

Obligation

Bonds,

Series

2021A:

510

3.750%,

3/01/41,

144A

9/26

at

103.00

N/R

428,803

1,095

4.000%,

3/01/51,

144A

9/26

at

103.00

N/R

895,611

3,360

MIDA

Military

Installation

Development

Authority

Golf

and

Equestrian

Center

Public

Infrastructure

District,

Utah,

Limited

Tax

and

Tax

Allocation

Revenue

Bonds,

Series

2021,

4.625%,

6/01/57,

144A

12/26

at

103.00

N/R

2,737,863

45

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Utah

(continued)

$

500

Red

Bridge

Public

Infrastructure

District

1,

Utah,

Limited

Tax

General

Obligation

Bonds,

Series

2021A,

4.375%,

2/01/51,

144A

2/26

at

103.00

N/R

$

415,140

5,465

Total

Utah

4,477,417

Vermont

-

0.0%

(0.0%

of

Total

Investments)

1,835

Vermont

Economic

Development

Authority,

Mortgage

Revenue

Bonds,

Wake

Robin

Corporation

Project,

Series

2021A,

4.000%,

5/01/45

5/28

at

103.00

N/R

1,532,372

Virgin

Islands

-

0.2%

(0.1%

of

Total

Investments)

1,790

Virgin

Islands

Public

Finance

Authority,

Gross

Receipts

Taxes

Loan

Note,

Refunding

Series

2012A,

5.000%,

10/01/32

-

AGM

Insured

10/22

at

100.00

A2

1,809,081

4,715

West

Indian

Company

Limited,

Virgin

Island,

Port

Facilities

Revenue

Bonds,

WICO

Financing,

Series

2022A,

6.375%,

4/01/52,

144A

10/29

at

104.00

N/R

4,716,132

6,505

Total

Virgin

Islands

6,525,213

Virginia

-

1.0%

(0.6%

of

Total

Investments)

Embrey

Mill

Community

Development

Authority,

Virginia,

Special

Assessment

Revenue

Bonds,

Series

2015:

1,200

5.300%,

3/01/35,

(Pre-refunded

3/01/25),

144A

3/25

at

100.00

N/R

(5)

1,295,088

1,085

5.600%,

3/01/45,

(Pre-refunded

3/01/25),

144A

3/25

at

100.00

N/R

(5)

1,182,878

5,500

Hampton

Roads

Transportation

Accountability

Commision,

Virginia,

Revenue

Bonds,

Hampton

Roads

Transportation

Fund,

Senior

Lien

Series

2020A,

5.000%,

7/01/60

7/30

at

100.00

AA

6,151,200

11,380

Hampton

Roads

Transportation

Accountability

Commission,

Virginia,

Hampton

Roads

Transportation

Fund

Revenue

Bonds,

Senior

Lien

Series

2018A,

5.500%,

7/01/57,

(Pre-refunded

1/01/28)

1/28

at

100.00

AA

(5)

13,412,240

James

City

County

Economic

Development

Authority,

Virginia,

Residential

Care

Facility

Revenue

Bonds,

Williamsburg

Landing

Inc.,

Refunding

Series

2021A:

1,115

4.000%,

12/01/40

12/27

at

103.00

N/R

976,027

2,690

4.000%,

12/01/50

12/27

at

103.00

N/R

2,196,896

2,000

Peninsula

Town

Center

Community

Development

Authority,

Virginia,

Special

Obligation

Bonds,

Refunding

Series

2018,

5.000%,

9/01/45,

144A

9/27

at

100.00

N/R

1,962,840

1,000

Virginia

College

Building

Authority,

Educational

Facilities

Revenue

Bonds,

Marymount

University

Project,

Green

Series

2015B,

5.250%,

7/01/35,

144A

7/25

at

100.00

Ba2

1,027,640

2,005

Virginia

Small

Business

Finance

Authority,

Tourism

Development

Financing

Program

Revenue

Bonds,

Downtown

Norfolk

and

Virginia

Beach

Oceanfront

Hotel

Projects,

Series

2018A,

8.375%,

4/01/41,

144A

4/28

at

112.76

N/R

2,116,157

27,975

Total

Virginia

30,320,966

Washington

-

2.0%

(1.2%

of

Total

Investments)

5,000

Energy

Northwest,

Washington,

Electric

Revenue

Bonds,

Columbia

Generating

Station,

Refunding

Series

2015A,

5.000%,

7/01/38,

(UB)

(6)

7/25

at

100.00

AA-

5,340,300

1,250

Washington

Health

Care

Facilities

Authority,

Revenue

Bonds,

Providence

Health

&

Services,

Tender

Option

Bond

Trust

2015-XF0148,

14.383%,

10/01/44,

144A,

(IF)

10/24

at

100.00

AA-

1,397,937

20,455

Washington

Health

Care

Facilities

Authority,

Revenue

Bonds,

Seattle

Cancer

Center

Alliance,

Series

2020,

5.000%,

9/01/55

9/30

at

100.00

A2

21,582,684

6,655

Washington

Health

Care

Facilities

Authority,

Revenue

Bonds,

Seattle

Children's

Hospital,

Series

2012A,

5.000%,

10/01/42,

(Pre-refunded

10/01/22)

10/22

at

100.00

Aa2

(5)

6,694,131

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

46

NVG

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Washington

(continued)

$

3,650

Washington

State

Housing

Finance

Commission,

Non-profit

Housing

Revenue

Bonds,

Presbyterian

Retirement

Communities

Northwest

Proejct,

Refunding

Series

2016A,

5.000%,

1/01/51,

144A

1/25

at

102.00

BB

$

3,479,655

5,450

Washington

State

Housing

Finance

Commission,

Non-profit

Housing

Revenue

Bonds,

Presbyterian

Retirement

Communities

Northwest

Project,

Refunding

Series

2016A,

5.000%,

1/01/46,

144A

1/25

at

102.00

BB

5,253,092

21,510

Washington

State,

Motor

Vehicle

Fuel

Tax

General

Obligation

Bonds,

Series

2002-03C,

0.000%,

6/01/28

-

NPFG

Insured,

(UB)

(6)

No

Opt.

Call

AA+

18,602,493

63,970

Total

Washington

62,350,292

West

Virginia

-

1.4%

(0.9%

of

Total

Investments)

1,900

Monongalia

County

Commission,

West

Virginia,

Special

District

Excise

Tax

Revenue

Bonds,

University

Town

Centre

Economic

Opportunity

Development

District,

Refunding

&

Improvement

Series

2017A,

5.500%,

6/01/37,

144A

6/27

at

100.00

N/R

1,971,516

465

Monongalia

County

Commission,

West

Virginia,

Special

District

Excise

Tax

Revenue

Bonds,

University

Town

Centre

Economic

Opportunity

Development

District,

Refunding

&

Improvement

Series

2021A,

4.125%,

6/01/43,

144A

6/31

at

100.00

N/R

443,373

40,950

West

Virginia

Hospital

Finance

Authority,

Hospital

Revenue

Bonds,

West

Virginia

United

Health

System

Obligated

Group,

Refunding

&

Improvement

Series

2013A,

5.500%,

6/01/44,

(Pre-refunded

6/01/23)

6/23

at

100.00

A

(5)

42,316,911

43,315

Total

West

Virginia

44,731,800

Wisconsin

-

4.2%

(2.6%

of

Total

Investments)

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Cornerstone

Charter

Academy,

North

Carolina,

Series

2016A:

1,750

5.000%,

2/01/36,

144A

2/26

at

100.00

N/R

1,760,010

305

5.125%,

2/01/46,

144A

2/26

at

100.00

N/R

305,531

1,715

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Corvian

Community

School

Bonds,

North

Carolina,

Series

2019A,

5.000%,

6/15/49,

144A

6/26

at

100.00

N/R

1,639,248

500

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Corvian

Community

School,

North

Carolina,

Series

2017A,

5.125%,

6/15/47,

144A

6/24

at

100.00

N/R

496,145

1,480

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Envision

Science

Academy

Project,

Series

2016A,

5.125%,

5/01/36,

144A

5/26

at

100.00

N/R

1,444,939

6,000

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Phoenix

Academy

Charter

School,

North

Carolina,

Series

2017A,

5.625%,

6/15/37,

144A

6/24

at

100.00

N/R

5,866,620

Public

Finance

Authority

of

Wisconsin,

Charter

School

Revenue

Bonds,

Uwharrie

Charter

Academy,

North

Carolina,

Series

2017A:

1,000

5.500%,

6/15/37,

144A

6/27

at

100.00

N/R

1,033,080

1,790

5.625%,

6/15/47,

144A

6/27

at

100.00

N/R

1,843,145

15,205

Public

Finance

Authority

of

Wisconsin,

Health

Care

System

Revenue

Bonds,

Cone

Health,

Series

2022A,

4.000%,

10/01/52,

(UB)

10/32

at

100.00

N/R

15,232,369

35,100

Public

Finance

Authority

of

Wisconsin,

Limited

Obligation

PILOT

Revenue

Bonds,

American

Dream

@

Meadowlands

Project,

Series

2017,

7.000%,

12/01/50,

144A

12/27

at

100.00

N/R

33,089,823

1,700

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Alabama

Proton

Therapy

Center,

Senior

Series

2017A,

7.000%,

10/01/47,

144A

(4)

10/27

at

100.00

N/R

1,478,592

47

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Wisconsin

(continued)

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Prime

Healthcare

Foundation,

Inc.,

Series

2017A:

$

1,235

5.000%,

12/01/27

No

Opt.

Call

BBB-

$

1,300,060

1,815

5.200%,

12/01/37

12/27

at

100.00

BBB-

1,939,273

Public

Finance

Authority

of

Wisconsin,

Revenue

Bonds,

Roseman

University

of

Health

Sciences,

Series

2020:

1,300

5.000%,

4/01/40,

144A

4/30

at

100.00

BB

1,345,058

4,765

5.000%,

4/01/50,

144A

4/30

at

100.00

BB

4,874,261

Public

Finance

Authority,

Wisconsin,

Educational

Revenue

Bonds,

Lake

Norman

Charter

School,

Series

2018A:

4,050

5.000%,

6/15/38,

144A

6/26

at

100.00

BBB-

4,126,464

1,575

5.000%,

6/15/48,

144A

6/26

at

100.00

BBB-

1,588,324

2,500

Public

Finance

Authority,

Wisconsin,

Exempt

Facilities

Revenue

Bonds,

Celanese

Project,

Refunding

Series

2016C,

4.050%,

11/01/30

5/26

at

100.00

Baa3

2,547,775

6,620

Wisconsin

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Froedtert

Health

Inc.

Obligated

Group,

Series

2012A,

5.000%,

4/01/42

10/22

at

100.00

AA

6,658,926

Wisconsin

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Mercy

Alliance,

Inc.,

Series

2012:

11,000

5.000%,

6/01/32

8/22

at

100.00

A3

11,026,950

1,500

5.000%,

6/01/39

8/22

at

100.00

A3

1,503,405

Wisconsin

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

PHW

Muskego,

Inc.

Project,

Series

2021:

2,405

4.000%,

10/01/51

10/28

at

102.00

N/R

2,037,781

3,845

4.000%,

10/01/61

10/28

at

102.00

N/R

3,103,376

1,450

Wisconsin

Health

and

Educational

Facilities

Authority,

Revenue

Bonds,

Rocket

Education

Obligated

Group,

Series

2017C,

5.250%,

6/01/40,

144A

6/26

at

100.00

N/R

1,480,609

1,000

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

American

Baptist

Homes

of

the

Midwest

Obligated

Group,

Refunding

Series

2017,

5.000%,

8/01/37

8/24

at

103.00

N/R

922,460

2,505

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Aurora

Health

Care,

Inc.,

Series

2013A,

5.125%,

4/15/31,

(Pre-

refunded

4/15/23)

4/23

at

100.00

Aa3

(5)

2,568,176

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Dickson

Hollow

Project.

Series

2014:

1,000

5.375%,

10/01/44

10/22

at

102.00

N/R

1,001,230

1,500

5.500%,

10/01/49

10/22

at

102.00

N/R

1,504,710

2,275

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Oakwood

Lutheran

Senior

Ministries,

Series

2021,

4.000%,

1/01/57

1/27

at

103.00

N/R

1,880,492

1,000

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Rogers

Memorial

Hospital,

Inc.,

Series

2014A,

5.000%,

7/01/34

7/24

at

100.00

A

1,027,390

1,850

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Saint

Camillus

Health

System

Inc,

Series

2019A,

5.000%,

11/01/54

11/26

at

103.00

N/R

1,803,584

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Saint

John's

Communities

Inc.,

Series

2015B:

550

5.000%,

9/15/37

9/22

at

100.00

BBB-

552,272

1,350

5.000%,

9/15/45

9/22

at

100.00

BBB-

1,355,575

1,000

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Three

Pillars

Senior

Living

Communities,

Refunding

Series

2013,

5.000%,

8/15/33,

(Pre-refunded

8/15/23)

8/23

at

100.00

BBB+

(5)

1,035,280

Nuveen

AMT-Free

Municipal

Credit

Income

Fund

(continued)

Portfolio

of

Investments

February

28,

2022

(Unaudited)

48

NVG

Part

F

of

Form

N-PORT

was

prepared

in

accordance

with

U.S.

generally

accepted

accounting

principles

(“U.S.

GAAP”)

and

in

conformity

with

the

applicable

rules

and

regulations

of

the

U.S.

Securities

and

Exchange

Commission

(“SEC”)

related

to

interim

filings.

Part

F

of

Form

N-PORT

does

not

include

all

information

and

footnotes

required

by

U.S.

GAAP

for

complete

financial

statements.

Certain

footnote

disclosures

normally

included

in

financial

statements

prepared

in

accordance

with

U.S.

GAAP

have

been

condensed

or

omitted

from

this

report

pursuant

to

the

rules

of

the

SEC.

For

a

full

set

of

the

Fund’s

notes

to

financial

statements,

please

refer

to

the

Fund’s

most

recently

filed

annual

or

semi-annual

report.

Fair

Value

Measurements

The

Fund’s

investments

in

securities

are

recorded

at

their

estimated

fair

value

utilizing

valuation

methods

approved

by

the

Board

of

Directors/

Trustees.

Fair

value

is

defined

as

the

price

that

would

be

received

upon

selling

an

investment

or

transferring

a

liability

in

an

orderly

transaction

to

an

independent

buyer

in

the

principal

or

most

advantageous

market

for

the

investment.

U.S.

GAAP

establishes

the

three-tier

hierarchy

which

is

used

to

maximize

the

use

of

observable

market

data

and

minimize

the

use

of

unobservable

inputs

and

to

establish

classification

of

fair

value

measurements

for

disclosure

purposes.

Observable

inputs

reflect

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Observable

inputs

are

based

on

market

data

obtained

from

sources

independent

of

the

reporting

entity.

Unobservable

inputs

reflect

management’s

assumptions

about

the

assumptions

market

participants

would

use

in

pricing

the

asset

or

liability.

Unobservable

inputs

are

based

on

the

best

information

available

in

the

circumstances.

The

following

is

a

summary

of

the

three-tiered

hierarchy

of

valuation

input

levels.

Level

1

–

Inputs

are

unadjusted

and

prices

are

determined

using

quoted

prices

in

active

markets

for

identical

securities.

Level

2

–

Prices

are

determined

using

other

significant

observable

inputs

(including

quoted

prices

for

similar

securities,

interest

rates,

credit

spreads,

etc.).

Level

3

–

Prices

are

determined

using

significant

unobservable

inputs

(including

management’s

assumptions

in

determining

the

fair

value

of

investments).

The

following

table

summarizes

the

market

value

of

the

Fund's

investments

as

of

the

end

of

the

reporting

period,

based

on

the

inputs

used

to

value

them:

Principal

Amount

(000)

Description

(1)

Optional

Call

Provisions

(2)

Ratings

(3)

Value

Wisconsin

(continued)

Wisconsin

Health

and

Educational

Facilities

Authority,

Wisconsin,

Revenue

Bonds,

Woodland

Hills

Senior

Housing

Project,

Series

2014:

$

2,565

5.000%,

12/01/44

12/22

at

102.00

N/R

$

2,401,045

1,775

5.250%,

12/01/49

12/22

at

102.00

N/R

1,695,587

Wisconsin

Housing

and

Economic

Development

Authority,

Housing

Revenue

Bonds,

Series

2019A:

2,800

3.150%,

11/01/44

11/28

at

100.00

Aa3

2,470,888

4,000

3.200%,

11/01/49

11/28

at

100.00

Aa3

3,418,800

135,775

Total

Wisconsin

131,359,253

$

5,958,459

Total

Municipal

Bonds

(cost

$5,082,267,557)

5,101,754,708

Shares

Description

(1)

Value

X

46,597,621

COMMON

STOCKS

-

1.5%

(0.9%

of

Total

Investments)

X

46,597,621

Independent

Power

and

Renewable

Electricity

Producers

-

1.5%

(0.9%

of

Total

Investments)

676,308

Energy

Harbor

Corp

(9),(10),(11)

$

46,597,621

Total

Common

Stocks

(cost

$15,015,822)

46,597,621

Total

Long-Term

Investments

(cost

$5,097,283,379)

5,148,352,329

Floating

Rate

Obligations

-

(6.3)%

(

196,300,000

)

Adjustable

Rate

MuniFund

Term

Preferred

Shares,

net

of

deferred

offering

costs

-

(3.6)%(12)

(

111,931,925

)

MuniFund

Preferred

Shares,

net

of

deferred

offering

costs

-

(20.9)%(13)

(

653,120,129

)

Variable

Rate

Demand

Preferred

Shares,

net

of

deferred

offering

costs

-

(39.5)%(14)

(

1,233,728,641

)

Other

Assets

Less

Liabilities

-  5.3%

167,865,365

Net

Assets

Applicable

to

Common

Shares

-

100%

$

3,121,136,999

Level

1

Level

2

Level

3

Total

Long-Term

Investments:

Municipal

Bonds

$

–

$

5,101,546,592

$

208,116

$

5,101,754,708

Common

Stocks

–

46,597,621

–

46,597,621

Total

$

–

$

5,148,144,213

$

208,116

$

5,148,352,329

49

(1)

All

percentages

shown

in

the

Portfolio

of

Investments

are

based

on

net

assets

applicable

to

common

shares

unless

otherwise

noted.

(2)

Optional

Call

Provisions:

Dates

(month

and

year)

and

prices

of

the

earliest

optional

call

or

redemption.

There

may

be

other

call

provisions

at

varying

prices

at

later

dates.

Certain

mortgage-backed

securities

may

be

subject

to

periodic

principal

paydowns.

(3)

The

ratings

disclosed

are

the

lowest

of

Standard

&

Poor’s

Group

(“Standard

&

Poor’s”),

Moody’s

Investors

Service,

Inc.

(“Moody’s”)

or

Fitch,

Inc.

(“Fitch”)

rating.

Ratings

below

BBB

by

Standard

&

Poor’s,

Baa

by

Moody’s

or

BBB

by

Fitch

are

considered

to

be

below

investment

grade.

Holdings

designated

N/R

are

not

rated

by

any

of

these

national

rating

agencies.

(4)

Defaulted

security.

A

security

whose

issuer

has

failed

to

fully

pay

principal

and/or

interest

when

due,

or

is

under

the

protection

of

bankruptcy.

(5)

Backed

by

an

escrow

or

trust

containing

sufficient

U.S.

Government

or

U.S.

Government

agency

securities,

which

ensure

the

timely

payment

of

principal

and

interest.

(6)

Investment,

or

portion

of

investment,

has

been

pledged

to

collateralize

the

net

payment

obligations

for

investments

in

inverse

floating

rate

transactions.

(7)

Investment

valued

at

fair

value

using

methods

determined

in

good

faith

by,

or

at

the

discretion

of,

the

Board.

For

fair

value

measurement

disclosure

purposes,

investment

classified

as

Level

3.

(8)

Step-up

coupon

bond,

a

bond

with

a

coupon

that

increases

("steps

up"),

usually

at

regular

intervals,

while

the

bond

is

outstanding.

The

rate

shown

is

the

coupon

as

of

the

end

of

the

reporting

period.

(9)

For

fair

value

measurement

disclosure

purposes,

investment

classified

as

Level

2.

(10)

Common

Stock

received

as

part

of

the

bankruptcy

settlements

during

February

2020

for

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2005A,

4.000%,

1/01/35,

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006A,

3.500%,

4/01/41,

Beaver

County

Industrial

Development

Authority,

Pennsylvania,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Series

2006B,

3.500%,

12/01/35,

Ohio

Air

Quality

Development

Authority,

Ohio,

Air

Quality

Development

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Series

2009A,

5.700%,

8/01/20,

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Generation

Corporation

Project,

Refunding

Series

2009B,

3.100%,

3/01/23,

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Corporation

Project,

Refunding

Series

2010B,

3.750%,

6/01/33,

Ohio

Air

Quality

Development

Authority,

Ohio,

Pollution

Control

Revenue

Bonds,

FirstEnergy

Nuclear

Generation

Project,

Refunding

Series

2006B,

3.125%,

1/01/34,

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2006B,

4.000%,

12/01/33,

Ohio

Water

Development

Authority,

Pollution

Control

Revenue

Refunding

Bonds,

FirstEnergy

Nuclear

Generating

Corporation

Project,

Series

2010C,

4.000%,

6/01/33.

(11)

Non-income

producing;

issuer

has

not

declared

an

ex-dividend

date

within

the

past

twelve

months.

(12)

Adjustable

Rate

MuniFund

Term

Preferred

Shares,

net

of

deferred

offering

cost

as

a

percentage

of

Total

Investments

is

2.2%

(13)

MuniFund

Preferred

Shares,

net

of

deferred

offering

costs

as

a

percentage

of

Total

Investments

is

12.7%.

(14)

Variable

Rate

Demand

Preferred

Shares,

net

of

deferred

offering

costs

as

a

percentage

of

Total

Investments

is

24.0%.

144A

Investment

is

exempt

from

registration

under

Rule

144A

of

the

Securities

Act

of

1933,

as

amended.

These

investments

may

only

be

resold

in

transactions

exempt

from

registration,

which

are

normally

those

transactions

with

qualified

institutional

buyers.

ETM

Escrowed

to

maturity

IF

Inverse

floating

rate

security

issued

by

a

tender

option

bond

(“TOB”)

trust,

the

interest

rate

on

which

varies

inversely

with

the

Securities

Industry

Financial

Markets

Association

(SIFMA)

short-term

rate,

which

resets

weekly,

or

a

similar

short-term

rate,

and

is

reduced

by

the

expenses

related

to

the

TOB

trust.

UB

Underlying

bond

of

an

inverse

floating

rate

trust

reflected

as

a

financing

transaction.

WI/DD

Purchased

on

a

when-issued

or

delayed

delivery

basis.