NPORT-EX 2 NVG.htm
NVG
Nuveen AMT-Free Municipal Credit Income Fund
Portfolio of Investments    July 31, 2021
(Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    LONG-TERM INVESTMENTS – 155.2% (100.0% of Total Investments)        
    MUNICIPAL BONDS – 154.6% (99.6% of Total Investments)        
    Alabama – 2.0% (1.3% 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 $4,040,956
5,000   Birmingham-Jefferson Civic Center Authority, Alabama, Special Tax Bonds, Series 2018A, 4.000%, 7/01/43   7/28 at 100.00 A- 5,676,700
22,655   Lower Alabama Gas District, Alabama, Gas Project Revenue Bonds, Series 2016A, 5.000%, 9/01/46   No Opt. Call A2 34,953,267
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 8,898,093
    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 1,067,990
1,300   5.500%, 8/01/35   8/26 at 100.00 N/R 1,383,005
5,970   Tuscaloosa County Industrial Development Authority, Alabama, Gulf Opportunity Zone Bonds, Hunt Refining Project, Refunding Series 2019A, 5.250%, 5/01/44, 144A   5/29 at 100.00 N/R 7,059,227
12,000   UAB Medicine Finance Authority, Alabama, Revenue Bonds, Series 2019B, 4.000%, 9/01/44   9/29 at 100.00 AA- 14,196,840
59,670   Total Alabama       77,276,078
    Alaska – 0.5% (0.3% of Total Investments)        
    Northern Tobacco Securitization Corporation, Alaska, Tobacco Settlement Asset-Backed Bonds, Senior Series 2021A Class 1:        
2,490   4.000%, 6/01/41   6/31 at 100.00 A- 2,995,246
8,100   4.000%, 6/01/50   6/31 at 100.00 BBB+ 9,618,183
720   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- 846,475
26,570   Northern Tobacco Securitization Corporation, Alaska, Tobacco Settlement Asset-Backed Bonds, Series 2021B-2 Class 2, 0.000%, 6/01/66   6/31 at 30.73 N/R 6,019,699
37,880   Total Alaska       19,479,603
    Arizona – 2.5% (1.6% of Total Investments)        
4,230   Apache County Industrial Development Authority, Arizona, Pollution Control Revenue Bonds, Tucson Electric Power Company, Series 20102A, 4.500%, 3/01/30   3/22 at 100.00 A- 4,331,774
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 1,716,044
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 7,358,042
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 3,790,239
1
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Arizona (continued)        
$10,000   Arizona Sports and Tourism Authority, Tax Revenue Bonds, Multipurpose Stadium Facility Project, Refunding Senior Series 2012A, 5.000%, 7/01/31   7/22 at 100.00 A $10,353,900
3,142   Cahava Springs Revitalization District, Cave Creek, Arizona, Special Assessment Bonds, Series 2017A, 7.000%, 7/01/41, 144A (4)   7/27 at 100.00 N/R 2,419,491
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- 5,586,291
    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 2,035,933
1,975   5.000%, 7/01/54, 144A   7/29 at 100.00 Ba2 2,316,537
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 910,936
    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 9,142,200
8,755   5.500%, 7/01/39  –  FGIC Insured   No Opt. Call AA 13,723,025
    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 696,837
1,025   5.000%, 7/01/46, 144A   7/25 at 100.00 BB 1,142,568
2,045   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 2,118,927
    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- 1,255,238
1,850   5.375%, 7/01/46   7/26 at 100.00 BB- 2,038,829
2,135   5.500%, 7/01/51   7/26 at 100.00 BB- 2,346,664
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 3,352,306
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 938,100
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 3,531,198
    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+ 9,141,323
2,465   5.000%, 12/01/37   No Opt. Call BBB+ 3,523,594
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 2,166,060
79,487   Total Arizona       95,936,056
2
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 $1,855,066
20,480   0.000%, 7/01/46  –  AMBAC Insured   No Opt. Call Aa2 9,985,434
23,115   Total Arkansas       11,840,500
    California – 12.1% (7.8% 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 5,454,690
    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 4,383,744
6,820   0.000%, 9/01/35  –  AGM Insured (ETM)   No Opt. Call AA (5) 5,588,172
4,100   Antelope Valley Healthcare District, California, Revenue Bonds, Series 2016A, 5.000%, 3/01/41   3/26 at 100.00 Ba3 4,551,492
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) 5,412,650
5,825   California Community Housing Agency, 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 6,086,251
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+ 1,706,405
580   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- 728,155
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 10,310,492
22,965   California Educational Facilities Authority, Revenue Bonds, Stanford University Series 2016U-7, 5.000%, 6/01/46 (UB) (6)   No Opt. Call AAA 36,281,485
15,850   California Educational Facilities Authority, Revenue Bonds, Stanford University Series 2019V-1, 5.000%, 5/01/49   No Opt. Call AAA 25,684,766
10,000   California Health Facilities Financing Authority, Revenue Bonds, Lucile Salter Packard Children's Hospital, Series 2012A, 5.000%, 8/15/51   8/22 at 100.00 A+ 10,507,000
1,600   California Health Facilities Financing Authority, Revenue Bonds, Saint Joseph Health System, Series 2013A, 5.000%, 7/01/37   7/23 at 100.00 AA- 1,746,048
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- 7,761,193
    California Health Facilities Financing Authority, Revenue Bonds, Stanford Hospitals and Clinics, Tender Option Bond Trust 2016-XG0049:        
1,555   9.464%, 8/15/51 (Pre-refunded 8/15/22), 144A (IF) (6)   8/22 at 100.00 AA- (5) 1,712,537
1,650   9.472%, 8/15/51 (Pre-refunded 8/15/22), 144A (IF) (6)   8/22 at 100.00 AA- (5) 1,817,310
4,075   9.472%, 8/15/51 (Pre-refunded 8/15/22), 144A (IF) (6)   8/22 at 100.00 AA- (5) 4,488,205
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) 5,492,100
3
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
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 $3,556,841
1,000   5.000%, 7/01/36, 144A   7/26 at 100.00 BB 1,151,780
555   5.000%, 7/01/41, 144A   7/26 at 100.00 BB 635,020
195   5.000%, 7/01/46, 144A   7/26 at 100.00 BB 221,838
    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- 301,759
435   5.000%, 6/01/46   6/26 at 100.00 BBB- 498,018
3,000   California Municipal Finance Authority, Revenue Bonds, Simpson University, Series 2020A, 6.000%, 10/01/50   10/27 at 103.00 N/R 3,437,850
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 6,544,883
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- 2,424,535
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 808,213
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 793,364
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 637,625
80   California State, General Obligation Bonds, Series 2002, 5.000%, 10/01/32  –  NPFG Insured   8/21 at 100.00 AA- 80,294
5   California State, General Obligation Bonds, Series 2004, 5.000%, 4/01/31  –  AMBAC Insured   8/21 at 100.00 AA- 5,019
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- 14,448,728
65,505   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- 74,232,231
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- 12,120,038
4,000   California Statewide Communities Development Authority, Revenue Bonds, Huntington Memorial Hospital, Refunding Series 2014B, 4.000%, 7/01/39   7/24 at 100.00 A- 4,358,520
    California Statewide Community Development Authority, Revenue Bonds, Daughters of Charity Health System, Series 2005A:        
507   5.750%, 7/01/30 (4)   8/21 at 100.00 N/R 482,127
1,465   5.750%, 7/01/35 (4)   8/21 at 100.00 N/R 1,391,415
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) 4,930,600
3,400   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 2,793,270
4
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    California (continued)        
$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 $9,060,850
    El Rancho Unified School District, Los Angeles County, California, General Obligation Bonds, Election 2010 Series 2011A:        
2,615   6.900%, 8/01/31  –  AGM Insured (7)   8/28 at 100.00 A1 3,214,123
3,600   7.050%, 8/01/34  –  AGM Insured (7)   8/28 at 100.00 A1 4,408,884
    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 3,138,973
5,000   0.010%, 1/15/35  –  AGM Insured   No Opt. Call BBB 3,857,700
    Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A:        
910   0.000%, 1/15/42 (7)   1/31 at 100.00 Baa2 1,118,035
6,610   6.000%, 1/15/49 (Pre-refunded 1/15/24)   1/24 at 100.00 Baa2 (5) 7,564,021
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 5,042,364
    Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2018A-1:        
9,795   5.000%, 6/01/47   6/22 at 100.00 N/R 10,113,729
6,240   5.250%, 6/01/47   6/22 at 100.00 N/R 6,461,146
10,250   Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2018A-2, 5.000%, 6/01/47   6/22 at 100.00 N/R 10,583,535
    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 5,516,560
5,795   0.000%, 11/01/25  –  AGM Insured   No Opt. Call AA 5,638,477
1,105   Lincoln Public Financing Authority, Placer County, California, Twelve Bridges Limited Obligation Revenue Bonds, Refunding Series 2011A, 4.375%, 9/02/25  –  AGM Insured   9/21 at 100.00 AA 1,108,403
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 (7)   8/35 at 100.00 AA 8,797,302
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+ 5,532,334
    Oceanside Unified School District, San Diego County, California, General Obligation Bonds, Capital Appreciation, 2008 Election Series 2009A:        
530   0.000%, 8/01/26  –  AGC Insured (ETM)   No Opt. Call Aa3 (5) 513,861
605   0.000%, 8/01/26  –  AGC Insured (ETM)   No Opt. Call Aa3 (5) 586,578
4,770   0.000%, 8/01/26  –  AGC Insured   No Opt. Call Aa3 4,586,498
225   0.000%, 8/01/28  –  AGC Insured (ETM)   No Opt. Call Aa3 (5) 211,302
1,995   0.000%, 8/01/28  –  AGC Insured   No Opt. Call Aa3 1,845,973
525   Ontario Redevelopment Financing Authority, San Bernardino County, California, Revenue Bonds, Redevelopment Project 1, Series 1993, 5.850%, 8/01/22  –  NPFG Insured (ETM)   8/21 at 100.00 N/R (5) 539,663
5
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    California (continued)        
$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 $4,276,678
    Palo Alto, California, Certificates of Participation, Public Safety Building, Series 2021:        
3,380   2.000%, 11/01/42   11/30 at 100.00 AA+ 3,262,173
2,730   2.125%, 11/01/44   11/30 at 100.00 AA+ 2,660,139
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- 3,578,270
7,935   Palomar Pomerado Health, California, General Obligation Bonds, Series 2009A, 7.000%, 8/01/38  –  AGC Insured   8/29 at 100.00 BBB- 11,356,572
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 7,831,687
4,150   Placentia-Yorba Linda Unified School District, Orange County, California, Certificates of Participation, Refunding Series 2011, 6.250%, 10/01/28  –  AGM Insured   10/21 at 100.00 A1 4,191,085
670   Riverside County Transportation Commission, California, Toll Revenue Senior Lien Bonds, Series 2013A, 5.750%, 6/01/48   6/23 at 100.00 BBB+ 726,595
    San Clemente, California, Special Tax Revenue Bonds, Community Facilities District 2006-1 Marblehead Coastal, Series 2015:        
485   5.000%, 9/01/40   9/25 at 100.00 N/R 551,285
910   5.000%, 9/01/46   9/25 at 100.00 N/R 1,027,854
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 4,318,840
    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   1/25 at 100.00 BBB 3,033,144
8,275   5.000%, 1/15/50   1/25 at 100.00 BBB 9,317,402
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 7,044,819
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 3,081,590
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 3,501,946
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 2,211,646
    Santa Ana Financing Authority, California, Lease Revenue Bonds, Police Administration and Housing Facility, Series 1994A:        
3,575   6.250%, 7/01/24 (ETM)   No Opt. Call Baa2 (5) 3,987,197
3,575   6.250%, 7/01/24   No Opt. Call Baa2 3,989,485
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+ 3,468,570
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 686,549
460,012   Total California       459,110,500
6
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Colorado – 9.9% (6.4% of Total Investments)        
$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 $925,514
    Base Village Metropolitan District 2, Colorado, General Obligation Bonds, Refunding Series 2016A:        
883   5.500%, 12/01/36   12/21 at 103.00 N/R 917,728
1,175   5.750%, 12/01/46   12/21 at 103.00 N/R 1,220,919
1,100   Belleview Station Metropolitan District 2, Denver City and County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax Refunding & Improvement Series 2017, 5.000%, 12/01/36   12/21 at 103.00 N/R 1,140,491
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 739,655
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 3,606,962
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 1,787,614
    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 1,207,705
5,465   5.000%, 12/01/47, 144A   12/22 at 103.00 N/R 5,769,564
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 1,630,170
195   Central Platte Valley Metropolitan District, Colorado, General Obligation Bonds, Refunding Series 2014, 5.000%, 12/01/43   12/23 at 100.00 BB 207,024
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 1,265,784
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+ 992,412
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+ 1,297,530
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+ 3,936,550
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+ 1,837,063
    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) 3,066,169
23,470   5.000%, 6/01/47 (Pre-refunded 6/01/27)   6/27 at 100.00 N/R (5) 29,253,243
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) 12,346,099
7
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Colorado (continued)        
    Colorado Health Facilities Authority, Colorado, Revenue Bonds, CommonSpirit Health, Series 2019A-2:        
$2,585   4.000%, 8/01/49   8/29 at 100.00 BBB+ $3,001,547
3,320   4.000%, 8/01/49 (UB) (6)   8/29 at 100.00 BBB+ 3,854,985
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- 5,674,102
    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) 1,746,370
2,895   5.000%, 12/01/23 (Pre-refunded 12/01/22)   12/22 at 100.00 A- (5) 3,082,770
4,200   5.000%, 12/01/24 (Pre-refunded 12/01/22)   12/22 at 100.00 A- (5) 4,472,412
    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) 839,970
1,575   5.625%, 6/01/43 (Pre-refunded 6/01/23)   6/23 at 100.00 N/R (5) 1,732,941
    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) 1,662,602
2,000   5.000%, 6/01/33 (Pre-refunded 6/01/25)   6/25 at 100.00 N/R (5) 2,358,300
5,870   5.000%, 6/01/40 (Pre-refunded 6/01/25)   6/25 at 100.00 N/R (5) 6,921,610
6,920   5.000%, 6/01/45 (Pre-refunded 6/01/25)   6/25 at 100.00 N/R (5) 8,159,718
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+ 2,404,190
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 13,966,174
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 4,464,064
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 655,506
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 1,563,206
1,273   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 1,344,072
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 548,020
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 11,729,536
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   12/22 at 103.00 N/R 534,558
    Denver Urban Renewal Authority, Colorado, Tax Increment Revenue Bonds, 9th and Colorado Urban Redevelopement Area, Series 2018A:        
1,005   5.250%, 12/01/39, 144A   12/23 at 103.00 N/R 1,105,289
2,310   5.250%, 12/01/39, 144A   12/23 at 103.00 N/R 2,541,508
8
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Colorado (continued)        
$11,700   E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Capital Appreciation Series 2010A, 0.000%, 9/01/41   No Opt. Call A $7,433,010
    E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 1997B:        
35,995   0.000%, 9/01/23  –  NPFG Insured   No Opt. Call A 35,705,240
6,525   0.000%, 9/01/26  –  NPFG Insured   No Opt. Call A 6,238,552
    E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 2000B:        
17,030   0.010%, 9/01/25  –  NPFG Insured   No Opt. Call A 16,532,554
10,005   0.000%, 9/01/32  –  NPFG Insured   No Opt. Call A 8,289,343
43,090   0.000%, 9/01/33  –  NPFG Insured   No Opt. Call A 34,791,297
    E-470 Public Highway Authority, Colorado, Toll Revenue Bonds, Series 2004A:        
20,000   0.000%, 9/01/27  –  NPFG Insured   No Opt. Call A 18,771,200
1,180   0.000%, 9/01/28  –  NPFG Insured   No Opt. Call A 1,083,240
7,000   0.000%, 9/01/34  –  NPFG Insured   No Opt. Call A 5,502,000
500   Flatiron Meadows Metropolitan District, Boulder County, Colorado, General Obligation Limited Tax Bonds, Series 2016, 5.125%, 12/01/46   12/21 at 103.00 N/R 518,150
590   Foothills Metropolitan District, Fort Collins, Colorado, Special Revenue Bonds, Series 2014, 6.000%, 12/01/38   12/24 at 100.00 N/R 614,615
825   Forest Trace Metropolitan District 3, Aurora City, Arapahoe County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax, Series 2016A, 5.000%, 12/01/46 (Pre-refunded 12/01/21)   12/21 at 103.00 N/R (5) 863,041
1,355   Great Western Park Metropolitan District 2, Broomfield City and County, Colorado, General Obligation Bonds, Series 2016A, 5.000%, 12/01/46   12/21 at 100.00 N/R 1,404,390
742   Green Gables Metropolitan District No 1, Jefferson County, Colorado, General Obligation Bonds, Series 2016A, 5.300%, 12/01/46 (Pre-refunded 12/01/21)   12/21 at 103.00 N/R (5) 776,043
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) 764,876
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 542,170
    Johnstown Plaza Metropolitan District, Colorado, Special Revenue Bonds, Series 2016A:        
2,325   5.250%, 12/01/36   12/21 at 103.00 N/R 2,411,536
8,955   5.375%, 12/01/46   12/21 at 103.00 N/R 9,284,723
    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 895,887
5,355   6.000%, 12/15/50   12/23 at 100.00 N/R 4,863,090
980   Leyden Rock Metropolitan District No 10, In the City of Arvada, Colorado, Limited Tax General Obligation Bonds, Refunding and Improvement Series 20016A, 5.000%, 12/01/45   12/21 at 103.00 N/R 1,016,093
500   Littleton Village Metropolitan District No 2, Colorado, Limited Tax General Obligation and Special Revenue Bonds, Series 2015, 5.375%, 12/01/45   8/21 at 103.00 N/R 515,810
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 942,818
9
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Colorado (continued)        
$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 $5,525,490
    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 1,066,760
1,000   5.750%, 12/01/47   12/22 at 103.00 N/R 1,064,980
585   Overlook Metropolitan District in the Town of Parker, Douglas County, Colorado, General Obligation Limited Tax Bonds, Series 2016A, 5.500%, 12/01/46   12/21 at 103.00 N/R 606,633
    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 3,733,379
6,900   5.000%, 12/01/49   12/24 at 103.00 N/R 7,558,191
    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 769,553
1,060   5.000%, 12/01/46   12/26 at 100.00 Baa3 1,218,830
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 757,772
665   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 742,852
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 3,039,698
    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 1,419,726
2,765   5.500%, 12/01/47   12/23 at 103.00 N/R 2,986,062
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 5,508,893
1,280   Sierra Ridge Metropolitan District 2, Douglas County, Colorado, General Obligation Bonds, Limited Tax Series 2016A, 5.500%, 12/01/46   12/21 at 103.00 N/R 1,328,141
930   SouthGlenn Metropolitan District, Colorado, Special Revenue Bonds, Refunding Series 2016, 5.000%, 12/01/46   12/21 at 103.00 N/R 963,554
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 1,067,200
    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 1,101,490
570   5.000%, 12/01/49   12/24 at 103.00 N/R 622,839
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 858,888
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 3,069,814
10
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Colorado (continued)        
$500   Table Mountain Metropolitan District, Jefferson County, Colorado, Limited Tax General Obligation Bonds, Series 2016A, 5.250%, 12/01/45   12/21 at 103.00 N/R $518,490
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 532,360
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 (7)   3/26 at 103.00 N/R 449,595
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 1,010,511
8,500   University of Colorado Hospital Authority, Colorado, Revenue Bonds, Series 2012A, 5.000%, 11/15/42   11/22 at 100.00 Aa3 9,005,410
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 4,275,151
373,683   Total Colorado       378,073,586
    Connecticut – 5.6% (3.6% 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 2,639,508
1,600   5.000%, 7/01/34  –  AGM Insured   7/24 at 100.00 A2 1,796,688
2,800   Bridgeport, Connecticut, General Obligation Bonds, Series 2016D, 5.000%, 8/15/41  –  AGM Insured   8/26 at 100.00 A2 3,345,188
    Bridgeport, Connecticut, General Obligation Bonds, Series 2017A:        
1,470   5.000%, 11/01/36   11/27 at 100.00 Baa1 1,796,649
750   5.000%, 11/01/37   11/27 at 100.00 Baa1 914,760
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 6,372,533
4,250   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 4,777,170
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 1,198,461
5,565   Connecticut Health and Educational Facilities Authority, Revenue Bonds, Fairfield University, Series 2016Q-1, 5.000%, 7/01/46   7/26 at 100.00 A- 6,570,874
500   Connecticut Health and Educational Facilities Authority, Revenue Bonds, Hartford HealthCare, Series 2014E, 5.000%, 7/01/42   7/24 at 100.00 A 563,210
    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 663,809
740   5.000%, 9/01/53, 144A   9/26 at 100.00 BB 829,940
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 3,322,740
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 2,172,491
11
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Connecticut (continued)        
$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) $1,207,845
    Connecticut Health and Educational Facilities Authority, Revenue Bonds, Nuvance Health Series 2019A:        
1,000   4.000%, 7/01/41   7/29 at 100.00 Baa2 1,164,550
1,370   4.000%, 7/01/49   7/29 at 100.00 Baa2 1,570,130
    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- 11,111,862
7,030   5.000%, 7/01/45   7/25 at 100.00 A- 7,973,426
    Connecticut Health and Educational Facilities Authority, Revenue Bonds, Quinnipiac University, Series 2016M:        
500   5.000%, 7/01/34   7/26 at 100.00 A- 591,015
1,250   5.000%, 7/01/36   7/26 at 100.00 A- 1,473,575
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 7,358,576
    Connecticut Health and Educational Facilities Authority, Revenue Bonds, Stamford Hospital, Series 2012J:        
1,000   5.000%, 7/01/37   7/22 at 100.00 BBB+ 1,037,830
8,055   5.000%, 7/01/42   7/22 at 100.00 BBB+ 8,351,907
4,000   Connecticut Health and Educational Facilities Authority, Revenue Bonds, Stamford Hospital, Series 2016K, 4.000%, 7/01/46   7/26 at 100.00 BBB+ 4,372,600
    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- 3,193,859
770   5.000%, 12/01/45   6/26 at 100.00 AA- 924,986
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- 2,645,055
    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- 2,961,880
2,740   5.000%, 7/01/33   7/24 at 100.00 AA- 3,107,708
900   5.000%, 7/01/34   7/24 at 100.00 AA- 1,020,213
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) 6,187,439
    Connecticut Municipal Electric Energy Cooperative, Power Supply System Revenue Bonds, Tender Option Bond Trust 2016-XG0059:        
1,295   17.965%, 1/01/32, 144A (IF) (6)   1/23 at 100.00 Aa3 1,626,416
410   17.797%, 1/01/38, 144A (IF) (6)   1/23 at 100.00 Aa3 509,409
1,000   Connecticut State, General Obligation Bonds, Series 2011D, 5.000%, 11/01/31   11/21 at 100.00 A+ 1,012,020
3,500   Connecticut State, General Obligation Bonds, Series 2014F, 5.000%, 11/15/34   11/24 at 100.00 A+ 4,011,700
2,630   Connecticut State, General Obligation Bonds, Series 2015F, 5.000%, 11/15/34   11/25 at 100.00 A+ 3,108,292
3,730   Connecticut State, General Obligation Bonds, Series 2017A, 5.000%, 4/15/35   4/27 at 100.00 A+ 4,556,195
12
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Connecticut (continued)        
    Connecticut State, General Obligation Bonds, Series 2018A:        
$3,500   5.000%, 4/15/35 (UB) (6)   4/28 at 100.00 A $4,399,080
5,000   5.000%, 4/15/38 (UB) (6)   4/28 at 100.00 A 6,251,350
3,855   Connecticut State, Special Tax Obligation Bonds, Transportation Infrastructure Purposes Series 2013A, 5.000%, 10/01/33   10/23 at 100.00 AA- 4,232,173
1,380   Connecticut State, Special Tax Obligation Bonds, Transportation Infrastructure Purposes Series 2015A, 5.000%, 8/01/33   8/25 at 100.00 AA- 1,620,534
    Connecticut State, Special Tax Obligation Bonds, Transportation Infrastructure Purposes Series 2016A:        
5,300   5.000%, 9/01/33   9/26 at 100.00 AA- 6,409,555
1,075   5.000%, 9/01/34   9/26 at 100.00 AA- 1,298,858
3,500   Connecticut State, Special Tax Obligation Bonds, Transportation Infrastructure Purposes, Series 2014A, 5.000%, 9/01/33   9/24 at 100.00 AA- 3,986,605
    Connecticut Transmission Municipal Electric Energy Cooperative, Transmission System Revenue Bonds, Series 2012A:        
655   5.000%, 1/01/31   1/22 at 100.00 Aa3 667,484
500   5.000%, 1/01/32   1/22 at 100.00 Aa3 509,510
2,830   5.000%, 1/01/42   1/22 at 100.00 Aa3 2,879,808
    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) 573,360
1,000   5.000%, 8/15/31 (Pre-refunded 8/15/24)   8/24 at 100.00 A1 (5) 1,146,720
55   Greater New Haven Water Pollution Control Authority, Connecticut, Regional Wastewater System Revenue Bonds, Series 2005A, 5.000%, 8/15/35  –  NPFG Insured   8/21 at 100.00 A1 55,205
225   Hamden, Connecticut, General Obligation Bonds, Series 2016, 5.000%, 8/15/32  –  BAM Insured   8/24 at 100.00 AA 253,249
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 2,697,044
10,015   Hartford County Metropolitan District, Connecticut, Clean Water Project Revenue Bonds, Refunding Green Bond Series 2014A, 5.000%, 11/01/42   11/24 at 100.00 AA- 11,272,383
    Hartford County Metropolitan District, Connecticut, Clean Water Project Revenue Bonds, Series 2013A:        
4,100   5.000%, 4/01/36 (Pre-refunded 4/01/22)   4/22 at 100.00 AA- (5) 4,234,398
2,500   5.000%, 4/01/39 (Pre-refunded 4/01/22)   4/22 at 100.00 AA- (5) 2,581,950
2,285   Hartford County Metropolitan District, Connecticut, General Obligation Bonds, Series 2018, 5.000%, 7/15/36   7/28 at 100.00 Aa3 2,859,700
870   Hartford, Connecticut, General Obligation Bonds, Series 2009A, 5.000%, 8/15/28  –  AGC Insured   8/21 at 100.00 A1 873,175
    Milford, Connecticut, General Obligation Bonds, Series 2018:        
1,055   4.000%, 11/01/36   11/24 at 100.00 AA+ 1,159,856
1,055   4.000%, 11/01/37   11/24 at 100.00 AA+ 1,158,517
1,550   New Haven, Connecticut, General Obligation Bonds, Refunding Series 2016A, 5.000%, 8/15/35  –  AGM Insured   8/26 at 100.00 BBB 1,846,763
13
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Connecticut (continued)        
$985   New Haven, Connecticut, General Obligation Bonds, Series 2014A, 5.000%, 8/01/33  –  AGM Insured   8/24 at 100.00 BBB $1,104,737
    New Haven, Connecticut, General Obligation Bonds, Series 2015:        
790   5.000%, 9/01/32  –  AGM Insured   9/25 at 100.00 BBB 919,797
1,620   5.000%, 9/01/33  –  AGM Insured   9/25 at 100.00 BBB 1,883,331
500   5.000%, 9/01/35  –  AGM Insured   9/25 at 100.00 BBB 580,190
    New Haven, Connecticut, General Obligation Bonds, Series 2017A:        
1,000   5.000%, 8/01/35   8/27 at 100.00 BBB 1,195,540
1,425   5.000%, 8/01/36   8/27 at 100.00 BBB 1,701,322
900   North Haven, Connecticut, General Obligation Bonds, Series 2006, 5.000%, 7/15/24   No Opt. Call Aa1 1,028,016
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) 910,156
    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- 3,131,590
2,220   5.000%, 8/01/37   8/26 at 100.00 AA- 2,686,888
3,250   South Central Connecticut Regional Water Authority, Water System Revenue Bonds, Twenty-Seventh Series 2012, 5.000%, 8/01/33 (Pre-refunded 8/01/22)   8/22 at 100.00 AA- (5) 3,409,575
500   Stamford, Connecticut, Water Pollution Control System and Facility Revenue Bonds, Series 2013A, 5.250%, 8/15/43   8/23 at 100.00 Aa2 548,565
    Stamford, Connecticut, Water Pollution Control System and Facility Revenue Bonds, Series 2019:        
200   4.000%, 4/01/37   4/29 at 100.00 AA+ 240,178
250   4.000%, 4/01/38   4/29 at 100.00 AA+ 299,610
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) 640,056
1,500   Stratford, Connecticut, General Obligation Bonds, Series 2017, 4.000%, 1/01/39  –  BAM Insured   1/27 at 100.00 A2 1,708,035
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 1,240,820
2,500   University of Connecticut, General Obligation Bonds, Series 2013A, 5.000%, 8/15/32   8/23 at 100.00 A+ 2,718,450
760   University of Connecticut, General Obligation Bonds, Series 2014A, 5.000%, 2/15/31   2/24 at 100.00 A+ 846,526
2,250   University of Connecticut, General Obligation Bonds, Series 2015A, 5.000%, 3/15/31   3/26 at 100.00 A+ 2,693,430
    Waterbury, Connecticut, General Obligation Bonds, Lot A Series 2015:        
445   5.000%, 8/01/30  –  BAM Insured   8/25 at 100.00 AA- 521,220
390   5.000%, 8/01/31  –  BAM Insured   8/25 at 100.00 AA- 456,628
610   5.000%, 8/01/32  –  BAM Insured   8/25 at 100.00 AA- 713,688
445   5.000%, 8/01/33  –  BAM Insured   8/25 at 100.00 AA- 520,258
445   5.000%, 8/01/34  –  BAM Insured   8/25 at 100.00 AA- 519,684
186,990   Total Connecticut       213,228,076
14
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    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- $2,937,672
1,000   5.000%, 7/01/58   1/28 at 100.00 BB- 1,133,280
3,585   Total Delaware       4,070,952
    District of Columbia – 2.6% (1.7% 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- 3,948,210
2,570   District of Columbia Tobacco Settlement Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2001, 6.500%, 5/15/33   No Opt. Call A- 2,868,094
186,000   District of Columbia Tobacco Settlement Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2006A, 0.000%, 6/15/46   8/21 at 21.75 N/R 40,267,140
1,500   District of Columbia, Revenue Bonds, Ingleside at Rock Creek Project, Series 2017A, 5.000%, 7/01/42   7/24 at 103.00 N/R 1,624,245
1,810   Metropolitan Washington Airports Authority, District of Columbia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Refunding & Subordinate Lien Series 2019B, 4.000%, 10/01/53  –  AGM Insured   10/29 at 100.00 A2 2,102,514
3,000   Metropolitan Washington Airports Authority, District of Columbia, 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 3,727,110
14,945   Metropolitan Washington Airports Authority, District of Columbia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital Improvement Projects, Refunding Second Senior Lien Series 2014A, 5.000%, 10/01/53   4/22 at 100.00 Baa1 15,373,324
11,000   Metropolitan Washington Airports Authority, District of Columbia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital improvement Projects, Second Senior Lien Series 2009C, 6.500%, 10/01/41  –  AGC Insured   10/26 at 100.00 A3 14,154,030
10,000   Metropolitan Washington Airports Authority, District of Columbia, 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 13,661,400
234,605   Total District of Columbia       97,726,067
    Florida – 4.6% (2.9% 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 1,074,269
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 1,099,070
    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 1,448,747
1,045   6.200%, 8/15/48, 144A   8/28 at 100.00 N/R 1,160,368
    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 1,241,801
1,470   5.500%, 7/01/47, 144A   7/27 at 100.00 Ba1 1,697,791
15
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Florida (continued)        
$5,225   Capital Trust Agency, Florida, Revenue Bonds, Provision CARES Proton Therapy Center, Orlando Project, Series 2018, 7.500%, 6/01/48, 144A (4), (8)   6/28 at 100.00 N/R $2,860,740
    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 6,851,080
1,885   5.250%, 6/15/47, 144A   6/27 at 100.00 N/R 2,123,735
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 1,007,767
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 827,309
4,670   City of Miami Beach, Florida, Stormwater Revenue Bonds, Series 2015, 5.000%, 9/01/41   9/25 at 100.00 AA- 5,447,508
1,025   Cityplace Community Development District, Florida, Special Assessement and Revenue Bonds, Refunding Series 2012, 5.000%, 5/01/26   No Opt. Call A 1,164,544
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) 1,675,552
    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 275,455
310   5.600%, 11/01/46   11/28 at 100.00 N/R 358,648
    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) 3,779,199
1,720   5.625%, 4/01/43 (Pre-refunded 4/01/23)   4/23 at 100.00 Baa1 (5) 1,877,070
4,000   Davie, Florida, Water and Sewer Revenue Bonds, Series 2011, 5.000%, 10/01/41 (Pre-refunded 10/01/21)  –  AGM Insured   10/21 at 100.00 A1 (5) 4,032,000
    Downtown Doral Community Development District, Florida, Special Assessment Bonds, Series 2015:        
280   5.250%, 5/01/35   5/26 at 100.00 N/R 304,550
315   5.300%, 5/01/36   5/26 at 100.00 N/R 342,585
475   5.500%, 5/01/45   5/26 at 100.00 N/R 519,128
655   5.500%, 5/01/46   5/26 at 100.00 N/R 715,542
    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 279,342
665   6.125%, 6/15/46, 144A   6/26 at 100.00 N/R 724,132
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 454,616
    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 2,747,400
3,735   5.750%, 7/01/47, 144A   7/27 at 101.00 N/R 4,272,915
16
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Florida (continued)        
    Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Florida Charter Foundation Inc Projects, Series 2016A:        
$1,485   6.250%, 6/15/36, 144A   6/26 at 100.00 N/R $1,759,562
2,075   4.750%, 7/15/36, 144A   7/26 at 100.00 N/R 2,271,834
4,350   6.375%, 6/15/46, 144A   6/26 at 100.00 N/R 5,106,813
1,335   5.000%, 7/15/46, 144A   7/26 at 100.00 N/R 1,463,707
    Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Mater Academy Projects, Series 2020A:        
4,330   5.000%, 6/15/50, 144A   6/27 at 100.00 BBB 5,046,788
3,405   5.000%, 6/15/55, 144A   6/27 at 100.00 BBB 3,956,508
    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 3,542,654
3,450   6.125%, 6/15/46, 144A   6/25 at 100.00 N/R 3,918,027
550   Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Renaissance Charter School, Inc Projects, Series 2014A, 6.125%, 6/15/44   6/24 at 100.00 N/R 601,447
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 4,776,083
5,500   Florida Housing Finance Corporation, Homeowner Mortgage Revenue Bonds, Social Series 2021-2, 2.200%, 7/01/46 (WI/DD, Settling 8/19/21)   7/30 at 100.00 Aaa 5,469,805
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 1,543,242
600   Jacksonville, Florida, Better Jacksonville Sales Tax Revenue Bonds, Refunding Series 2012, 5.000%, 10/01/30   10/22 at 100.00 A+ 633,672
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 2,637,046
1,000   Lakeland, Florida, Hospital System Revenue Bonds, Lakeland Regional Health, Refunding Series 2011, 5.000%, 11/15/25   11/21 at 100.00 A2 1,012,440
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 703,113
4,125   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) 4,771,140
    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 1,209,730
1,920   6.000%, 7/01/47, 144A   7/27 at 100.00 N/R 2,130,950
5,965   Miami Dade County, Florida, Rickenbacker Causeway Revenue Bonds, Series 2014, 5.000%, 10/01/43   10/24 at 100.00 BBB+ 6,556,430
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+ 2,163,462
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+ 5,587,450
17
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Florida (continued)        
$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) $2,537,568
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) 6,666,403
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 5,484,328
4,270   Orange County Health Facilities Authority, Florida, Hospital Revenue Bonds, Orlando Health, Inc, Series 2012A, 5.000%, 10/01/42 (Pre-refunded 4/01/22)   4/22 at 100.00 A2 (5) 4,408,519
    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- 1,577,378
1,645   5.000%, 10/01/49   10/29 at 100.00 BBB- 2,071,433
3,345   4.000%, 10/01/54   10/29 at 100.00 BBB- 3,881,973
230   Palm Beach County Health Facilities Authority, Florida, Revenue Bonds, Sinai Residences of Boca Raton Project, Series 2014A, 7.250%, 6/01/34   6/22 at 102.00 N/R 244,817
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 903,994
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 247,870
    Six Mile Creek Community Development District, Florida, Capital Improvement Revenue Bonds, Assessment Area 2, Series 2016:        
225   4.750%, 11/01/28   11/27 at 100.00 N/R 243,457
375   5.375%, 11/01/36   11/27 at 100.00 N/R 420,814
920   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 1,033,123
1,200   St Lucie County, Florida, Utility System Revenue Refunding Bonds, Series 1993, 5.500%, 10/01/21  –  FGIC Insured (ETM)   No Opt. Call N/R (5) 1,210,272
4,120   Tampa, Florida, Health System Revenue Bonds, Baycare Health System, Series 2012A, 5.000%, 11/15/33   5/22 at 100.00 Aa2 4,268,567
560   Tampa, Florida, Healthcare System Revenue Bonds, Allegany Health System - St Joseph's Hospital, Series 1993, 5.125%, 12/01/23  –  NPFG Insured (ETM)   8/21 at 100.00 N/R (5) 587,462
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- 2,190,680
10,105   Tampa-Hillsborough County Expressway Authority, Florida, Revenue Bonds, Refunding Series 2012B, 5.000%, 7/01/42 (Pre-refunded 7/01/22)   7/22 at 100.00 A2 (5) 10,555,784
2,000   Volusia County Educational Facilities Authority, Florida, Revenue Bonds, Embry-Riddle Aeronautical University, Inc Project, Refunding Series 2011, 5.000%, 10/15/29 (Pre-refunded 10/15/21)  –  AGM Insured   10/21 at 100.00 A2 (5) 2,019,460
5,000   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- 5,773,700
159,250   Total Florida       173,552,368
18
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Georgia – 3.1% (2.0% of Total Investments)        
$12,635   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 $12,965,658
5,715   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+ 6,512,014
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+ 12,824,622
2,000   Fairburn, Georgia, General Obligation Bonds, Series 2011, 5.750%, 12/01/31 (Pre-refunded 12/01/21)  –  AGM Insured   12/21 at 100.00 A2 (5) 2,037,480
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 11,740,400
15,305   Gainesville and Hall County Hospital Authority, Georgia, Revenue Anticipation Certificates, Northeast Georgia Health Services Inc, Series 2014A, 5.500%, 8/15/54   2/25 at 100.00 AA- 17,544,580
    Georgia Housing and Finance Authority, Single Family Mortgage Bonds, Series 2018A:        
2,730   3.950%, 12/01/43   6/27 at 100.00 AAA 2,861,859
4,085   4.000%, 12/01/48   6/27 at 100.00 AAA 4,281,162
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 1,530,724
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 4,469,160
10,825   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 12,438,250
    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 10,664,335
4,000   5.000%, 1/01/59   7/28 at 100.00 Baa1 4,899,160
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 1,057,130
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 11,628,321
1,710   Valdosta and Lowndes County Hospital Authority, Georgia, Revenue Certificates, South Georgia Medical Center Project, Series 2011B, 5.000%, 10/01/41 (Pre-refunded 10/01/21)   10/21 at 100.00 AA- (5) 1,723,680
105,330   Total Georgia       119,178,535
    Guam – 0.5% (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 1,716,000
    Government of Guam, Business Privilege Tax Bonds, Series 2011A:        
840   5.250%, 1/01/36   1/22 at 100.00 BB 857,279
3,200   5.125%, 1/01/42   1/22 at 100.00 BB 3,264,160
    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 1,568,184
890   5.000%, 7/01/40   7/27 at 100.00 Baa2 1,040,864
19
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Guam (continued)        
$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) $4,061,581
235   Guam Government Waterworks Authority, Water and Wastewater System Revenue Bonds, Series 2016, 5.000%, 1/01/46   7/26 at 100.00 Baa2 267,594
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 5,911,938
250   Guam Power Authority, Revenue Bonds, Series 2012A, 5.000%, 10/01/34  –  AGM Insured   10/22 at 100.00 A2 262,283
16,715   Total Guam       18,949,883
    Hawaii – 0.3% (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 1,575,030
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 5,458,650
170   Hawaii Department of Budget and Finance, Special Purpose Revenue Bonds, Hawaii Pacific University, Series 2013A, 6.875%, 7/01/43   7/23 at 100.00 BB 185,123
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 5,595,898
11,745   Total Hawaii       12,814,701
    Idaho – 0.8% (0.5% of Total Investments)        
    Idaho Health Facilities Authority, Revenue Bonds, Kootenai Health Project, Series 2014:        
3,300   4.375%, 7/01/34, 144A   7/24 at 100.00 A 3,612,279
12,495   4.750%, 7/01/44, 144A   7/24 at 100.00 A 13,369,650
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+ 1,445,050
8,730   Idaho Health Facilities Authority, Revenue Bonds, Saint Luke's Health System Project, Series 2012A, 5.000%, 3/01/47   3/22 at 100.00 A- 8,929,917
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- 1,069,720
    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 519,570
1,415   5.250%, 7/01/55, 144A   7/25 at 100.00 N/R 1,469,562
28,690   Total Idaho       30,415,748
    Illinois – 23.7% (15.3% 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) 738,268
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- 83,422,622
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- 1,187,380
20
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Illinois (continued)        
    Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues Series 2011A:        
$6,210   5.500%, 12/01/39   12/21 at 100.00 Ba3 $6,309,174
1,810   5.000%, 12/01/41   12/21 at 100.00 Ba3 1,835,648
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 5,501,638
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 11,243,736
    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 7,125,819
4,940   5.000%, 12/01/46   12/27 at 100.00 BB 5,960,209
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 7,468,298
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 48,032,113
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 18,608,997
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 26,080,561
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 1,195,046
    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+ 1,641,012
2,585   5.000%, 12/01/55   12/29 at 100.00 A+ 3,209,252
1,100   Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Series 2011, 5.250%, 12/01/40 (Pre-refunded 12/01/21)   12/21 at 100.00 A2 (5) 1,118,810
12,215   Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Series 2014, 5.250%, 12/01/49   12/24 at 100.00 AA 14,122,250
    Chicago, Illinois, General Obligation Bonds, City Colleges, Series 1999:        
1,500   0.000%, 1/01/31  –  NPFG Insured   No Opt. Call BBB- 1,209,975
32,670   0.000%, 1/01/32  –  FGIC Insured   No Opt. Call BBB- 25,542,059
12,360   0.000%, 1/01/37  –  FGIC Insured   No Opt. Call BBB- 8,147,341
2,500   Chicago, Illinois, General Obligation Bonds, Project & Refunding Series 2014A, 5.250%, 1/01/33   1/24 at 100.00 Ba1 2,741,675
17,605   Chicago, Illinois, General Obligation Bonds, Project & Refunding Series 2017A, 6.000%, 1/01/38   1/27 at 100.00 BBB- 22,073,325
1,000   Chicago, Illinois, General Obligation Bonds, Project Series 2011A, 5.250%, 1/01/35   8/21 at 100.00 Ba1 1,009,630
10,200   Chicago, Illinois, General Obligation Bonds, Project Series 2012A, 5.000%, 1/01/33   1/22 at 100.00 Ba1 10,375,440
2,605   Chicago, Illinois, General Obligation Bonds, Refunding Series 2016C, 5.000%, 1/01/38   1/26 at 100.00 BBB- 2,992,598
3,000   Chicago, Illinois, Wastewater Transmission Revenue Bonds, Second Lien Series 2008C, 5.000%, 1/01/39   1/25 at 100.00 A- 3,429,660
21
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Illinois (continued)        
$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 $10,859,200
    Illinois Educational Facilities Authority, Revenue Bonds, Field Museum of Natural History, Series 2002RMKT:        
2,500   4.450%, 11/01/36   11/25 at 102.00 A2 2,930,075
3,400   5.500%, 11/01/36   11/23 at 100.00 A 3,793,414
    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 1,959,165
115   6.000%, 12/01/45, 144A   12/25 at 100.00 N/R 132,222
    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+ 4,464,630
5,190   4.000%, 10/01/55   10/30 at 100.00 BBB+ 6,018,791
    Illinois Finance Authority, Revenue Bonds, Ascension Health/fkaPresence Health Network, Series 2016C:        
80   4.000%, 2/15/41 (Pre-refunded 2/15/27)   2/27 at 100.00 N/R (5) 94,399
1,755   4.000%, 2/15/41 (Pre-refunded 2/15/27)   2/27 at 100.00 N/R (5) 2,070,882
37,840   4.000%, 2/15/41   2/27 at 100.00 Aa2 43,250,742
6,750   Illinois Finance Authority, Revenue Bonds, Centegra Health System, Series 2012, 5.000%, 9/01/38   9/22 at 100.00 AA+ 7,094,925
    Illinois Finance Authority, Revenue Bonds, Centegra Health System, Series 2014A:        
1,485   5.000%, 9/01/34   9/24 at 100.00 AA+ 1,692,945
19,025   5.000%, 9/01/42   9/24 at 100.00 AA+ 21,638,845
1,750   Illinois Finance Authority, Revenue Bonds, Ingalls Health System, Series 2013, 4.250%, 5/15/43 (Pre-refunded 5/15/22)   5/22 at 100.00 A1 (5) 1,804,162
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 4,549,040
15,805   Illinois Finance Authority, Revenue Bonds, Mercy Health Corporation, Series 2016, 5.000%, 12/01/46   6/26 at 100.00 A3 18,745,204
1,630   Illinois Finance Authority, Revenue Bonds, Northwestern Memorial HealthCare, Series 2013, 5.000%, 8/15/37   8/22 at 100.00 Aa2 1,710,408
1,435   Illinois Finance Authority, Revenue Bonds, Rehabilitation Institute of Chicago, Series 2013A, 6.000%, 7/01/43   7/23 at 100.00 A- 1,552,196
    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+ 1,185,660
1,000   5.000%, 8/01/46   8/27 at 100.00 BBB+ 1,179,270
1,000   5.000%, 8/01/47   8/27 at 100.00 BBB+ 1,178,610
22
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Illinois (continued)        
    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 $653,318
6,140   5.000%, 8/15/44   8/25 at 100.00 A3 7,110,181
    Illinois Finance Authority, Revenue Bonds, University of Chicago, Refunding Series 2015A:        
2,235   5.000%, 10/01/46 (UB) (6)   10/25 at 100.00 AA- 2,622,683
17,765   5.000%, 10/01/46 (Pre-refunded 10/01/25) (UB) (6)   10/25 at 100.00 N/R (5) 21,158,115
19,975   Illinois Finance Authority, Revenue Bonds, University of Chicago, Series 2012A, 5.000%, 10/01/51   10/21 at 100.00 AA- 20,133,202
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+ 4,070,092
    Illinois State, General Obligation Bonds, December Series 2017A:        
11,800   5.000%, 12/01/38   12/27 at 100.00 BBB- 14,237,054
1,330   5.000%, 12/01/39   12/27 at 100.00 BBB- 1,601,121
    Illinois State, General Obligation Bonds, February Series 2014:        
3,275   5.000%, 2/01/24   No Opt. Call BBB- 3,651,134
1,575   5.250%, 2/01/34   2/24 at 100.00 BBB- 1,753,558
7,500   5.000%, 2/01/39   2/24 at 100.00 BBB- 8,268,525
5,200   Illinois State, General Obligation Bonds, January Series 2016, 5.000%, 1/01/29   1/26 at 100.00 BBB- 6,082,336
    Illinois State, General Obligation Bonds, May Series 2014:        
510   5.000%, 5/01/36   5/24 at 100.00 BBB- 565,962
1,915   5.000%, 5/01/39   5/24 at 100.00 BBB- 2,121,820
4,460   Illinois State, General Obligation Bonds, May Series 2020, 5.500%, 5/01/39   5/30 at 100.00 BBB- 5,851,475
13,200   Illinois State, General Obligation Bonds, November Series 2016, 5.000%, 11/01/41   11/26 at 100.00 BBB- 15,417,600
31,485   Illinois State, General Obligation Bonds, November Series 2017C, 5.000%, 11/01/29   11/27 at 100.00 BBB- 38,725,291
2,040   Illinois State, General Obligation Bonds, November Series 2017D, 5.000%, 11/01/27   No Opt. Call BBB- 2,536,067
5,000   Illinois State, General Obligation Bonds, November Series 2019B, 4.000%, 11/01/35   11/29 at 100.00 BBB- 5,906,250
5,000   Illinois State, General Obligation Bonds, October Series 2016, 5.000%, 2/01/29   2/27 at 100.00 BBB- 6,047,100
1,190   Illinois State, General Obligation Bonds, Refunding Series 2012, 5.000%, 8/01/25   8/22 at 100.00 BBB- 1,246,347
    Illinois State, General Obligation Bonds, Series 2013:        
2,000   5.250%, 7/01/31   7/23 at 100.00 BBB- 2,163,660
4,140   5.500%, 7/01/38   7/23 at 100.00 BBB- 4,479,563
5,000   Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Senior Lien Series 2013A, 5.000%, 1/01/35   1/23 at 100.00 A1 5,324,500
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 21,988,824
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 12,629,500
12,010   Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Senior Lien Series 2020A, 5.000%, 1/01/45   1/31 at 100.00 A1 15,519,202
1,395   Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Tender Option Bond Trust 2015-XF0052, 17.777%, 1/01/38, 144A (IF)   1/23 at 100.00 A1 1,749,316
23
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Illinois (continued)        
$17,510   Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Refunding Series 2012B, 5.000%, 6/15/52   6/22 at 100.00 BB+ $18,229,486
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+ 619,623
    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+ 14,215,039
15,160   5.000%, 6/15/50   12/29 at 100.00 BB+ 18,965,008
    Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Refunding Series 2022A:        
2,910   4.000%, 12/15/42 (WI/DD, Settling 3/17/22)   12/31 at 100.00 BB+ 3,387,502
4,320   4.000%, 12/15/47 (WI/DD, Settling 3/17/22)   12/31 at 100.00 BB+ 4,978,325
    Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Series 2015A:        
2,890   0.000%, 12/15/52   No Opt. Call BB+ 1,298,708
5,185   5.000%, 6/15/53   12/25 at 100.00 BB+ 5,946,780
5,700   5.500%, 6/15/53   12/25 at 100.00 BB+ 6,657,828
    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+ 14,762,000
43,200   0.000%, 6/15/45  –  AGM Insured   No Opt. Call BB+ 24,693,984
10,000   0.000%, 6/15/46  –  AGM Insured   No Opt. Call BB+ 5,567,800
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 7,886,725
    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+ 17,507,727
20,045   0.000%, 12/15/35  –  AGM Insured   No Opt. Call BB+ 15,226,984
9,010   0.000%, 6/15/37  –  NPFG Insured   No Opt. Call BB+ 6,414,760
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 484,377
1,846   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 2,016,773
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 3,534,674
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) 8,192,414
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 3,815,640
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 13,946,781
24
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Illinois (continued)        
$780   Will County Community Unit School District 201-U Crete-Monee, Illinois, General Obligation Bonds, Capital Appreciation Series 2004, 0.000%, 11/01/22  –  NPFG Insured (ETM)   No Opt. Call Baa2 (5) $776,708
    Will County Community Unit School District No 201-U Crete-Monee, Illinois:        
165   0.000%, 11/01/22 (ETM)   No Opt. Call N/R (5) 164,508
2,390   0.000%, 11/01/22   No Opt. Call A 2,366,339
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 6,250,327
841,776   Total Illinois       901,747,937
    Indiana – 2.7% (1.7% 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 2,616,027
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 13,513,406
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) 11,318,839
10,000   Indiana Finance Authority, Hospital Revenue Bonds, Indiana Unversity Health Obligation Group, Fixed Rate Series 2019A, 4.000%, 12/01/49   12/29 at 100.00 AA 11,740,900
13,880   Indiana Finance Authority, Wastewater Utility Revenue Bonds, CWA Authority Project, Series 2011B, 5.000%, 10/01/41   10/21 at 100.00 A1 13,989,930
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+ 20,401,341
    Indianapolis Local Public Improvement Bond Bank, Indiana, Series 1999E:        
10,000   0.000%, 2/01/26  –  AMBAC Insured   No Opt. Call AA- 9,706,800
20,000   0.000%, 2/01/28  –  AMBAC Insured   No Opt. Call AA- 18,788,200
96,970   Total Indiana       102,075,443
    Iowa – 1.9% (1.2% 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) 10,795,300
10,690   Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Series 2013, 5.250%, 12/01/25   12/23 at 100.00 B+ 11,706,619
21,280   Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Series 2018B, 5.250%, 12/01/50 (Mandatory Put 12/01/37)   12/22 at 105.00 BB- 23,443,538
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 5,991,213
56,850   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 10,795,246
7,565   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 8,938,048
112,085   Total Iowa       71,669,964
    Kansas – 0.3% (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+ 1,148,310
25
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Kansas (continued)        
    Wyandotte County-Kansas City Unified Government, Kansas, Sales Tax Special Obligation Bonds, Vacation Village Project Area 1 and 2A, Series 2015:        
$3,920   5.000%, 9/01/27   9/25 at 100.00 N/R $3,994,166
2,380   5.750%, 9/01/32   9/25 at 100.00 N/R 2,433,717
2,575   6.000%, 9/01/35   9/25 at 100.00 N/R 2,632,809
9,875   Total Kansas       10,209,002
    Kentucky – 1.7% (1.1% 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+ 6,820,646
3,770   Kentucky Bond Development Corporation, Tax Increment Revenue Bonds, Summit Lexington Project, Series 2016A, 4.400%, 10/01/24   No Opt. Call N/R 3,846,154
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- 11,815,600
    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 4,823,341
17,615   5.000%, 1/01/45   7/25 at 100.00 Baa2 19,390,768
    Kentucky Public Transportation Infrastructure Authority, First Tier Toll Revenue Bonds, Downtown Crossing Project, Convertible Capital Appreciation Series 2013C:        
4,360   0.000%, 7/01/43 (7)   7/31 at 100.00 Baa2 5,458,284
8,510   0.000%, 7/01/46 (7)   7/31 at 100.00 Baa2 10,673,497
    Kentucky Public Transportation Infrastructure Authority, First Tier Toll Revenue Bonds, Downtown Crossing Project, Series 2013A:        
2,390   5.750%, 7/01/49   7/23 at 100.00 Baa2 2,631,725
480   6.000%, 7/01/53   7/23 at 100.00 Baa2 530,438
57,385   Total Kentucky       65,990,453
    Louisiana – 1.1% (0.8% of Total Investments)        
2,650   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 2,815,307
    Louisiana Public Facilities Authority, Hospital Revenue Bonds, Franciscan Missionaries of Our Lady Health System, Series 1998A:        
135   5.750%, 7/01/25 (ETM) (UB)   No Opt. Call A2 (5) 163,644
6,915   5.750%, 7/01/25 (UB)   No Opt. Call A2 7,803,163
5,080   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+ 5,935,472
11,000   Louisiana Public Facilities Authority, Revenue Bonds, Loyola University Project, Refunding Series 2017, 5.250%, 10/01/46 (7)   10/33 at 100.00 BBB 12,408,220
    Louisiana Public Facilities Authority, Revenue Bonds, Ochsner Clinic Foundation Project, Series 2015:        
1,000   4.250%, 5/15/40   5/25 at 100.00 A3 1,109,340
6,970   5.000%, 5/15/47   5/25 at 100.00 A3 7,933,324
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) 1,113,240
26
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Louisiana (continued)        
$3,275   Saint James Parish, Louisiana, Revenue Bonds, NuStar Logistics, LP Project, Series 2010A, 6.350%, 10/01/40, 144A   6/30 at 100.00 BB- $4,431,959
38,025   Total Louisiana       43,713,669
    Maine – 1.5% (1.0% 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) 8,220,576
    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 5,972,764
10,215   4.000%, 7/01/46   7/26 at 100.00 Ba1 11,131,592
10,000   Maine Health and Higher Educational Facilities Authority, Revenue Bonds, Mainehealth Issue, Series 2015, 5.000%, 7/01/39   7/24 at 100.00 A+ 11,007,700
    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+ 3,245,770
5,000   4.000%, 7/01/50   7/30 at 100.00 A+ 5,885,150
4,500   Maine State Housing Authority, Multifamily Mortgage Purchase Bonds, Series 2021A, 2.200%, 11/15/51   5/30 at 100.00 AA+ 4,473,810
7,695   Maine State Housing Authority, Single Family Mortgage Purchase Bonds, Series 2020D, 2.800%, 11/15/45   5/29 at 100.00 AA+ 8,041,891
915   Maine State Housing Authority, Single Family Mortgage Purchase Bonds, Social Series 2021C, 2.300%, 11/15/46 (WI/DD, Settling 8/24/21)   11/30 at 100.00 AA+ 909,977
54,050   Total Maine       58,889,230
    Maryland – 1.4% (0.9% 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 1,390,899
3,050   5.000%, 9/01/39   9/27 at 100.00 CCC 3,282,074
3,025   5.000%, 9/01/46   9/27 at 100.00 CCC 3,239,110
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 1,070,570
2,500   Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, Adventist Healthcare, Series 2011A, 6.000%, 1/01/26   1/22 at 100.00 Baa3 2,559,425
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 16,097,036
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+ 11,571,700
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) 1,709,355
3,010   Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, University of Maryland Medical System Issue, Series 2013A, 5.000%, 7/01/43 (Pre-refunded 7/01/22)   7/22 at 100.00 A (5) 3,145,691
27
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Maryland (continued)        
    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 $2,187,660
2,300   5.000%, 7/01/46, 144A   1/26 at 100.00 N/R 2,524,664
    Rockville Mayor and Council, Maryland, Economic Development Revenue Bonds, Series 2017B:        
1,335   4.250%, 11/01/37   11/24 at 103.00 B- 1,395,996
1,250   4.500%, 11/01/43   11/24 at 103.00 B- 1,325,050
2,650   5.000%, 11/01/47   11/24 at 103.00 B- 2,846,922
48,215   Total Maryland       54,346,152
    Massachusetts – 3.7% (2.4% 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- 2,281,773
6,195   5.500%, 7/01/44   7/24 at 100.00 B- 6,326,458
    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+ 8,868,792
3,000   5.000%, 10/01/57, 144A   10/22 at 105.00 BB+ 3,281,910
12,045   Massachusetts Development Finance Agency, Revenue Bonds, Boston College Issue, Series 2021V, 5.000%, 7/01/55   No Opt. Call AA- 19,887,138
10,000   Massachusetts Development Finance Agency, Revenue Bonds, CareGroup Issue, Series 2018J-2, 5.000%, 7/01/53   7/28 at 100.00 A3 12,269,900
    Massachusetts Development Finance Agency, Revenue Bonds, Emerson College, Series 2015:        
4,020   4.500%, 1/01/45   1/25 at 100.00 Baa2 4,372,313
2,950   5.000%, 1/01/45   1/25 at 100.00 Baa2 3,272,582
4,035   Massachusetts Development Finance Agency, Revenue Bonds, Emmanuel College, Series 2016A, 4.000%, 10/01/46   10/26 at 100.00 Baa2 4,517,304
16,280   Massachusetts Development Finance Agency, Revenue Bonds, Massachusetts Institute of Technology, Series 2020P, 5.000%, 7/01/50   No Opt. Call AAA 26,583,938
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+ 1,110,384
6,000   Massachusetts Development Finance Authority, Revenue Bonds, WGBH Educational Foundation, Series 2002A, 5.750%, 1/01/42  –  AMBAC Insured   No Opt. Call AA- 9,463,080
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 10,823,888
2,800   Massachusetts Housing Finance Agency, Housing Bonds, Series 2014D, 3.875%, 12/01/39   6/24 at 100.00 AA- 2,967,020
    Massachusetts Housing Finance Agency, Housing Bonds, Sustainability Green Series 2021A-1:        
3,340   2.375%, 12/01/46   6/30 at 100.00 AA 3,381,550
3,600   2.450%, 12/01/51   6/30 at 100.00 AA 3,635,244
8,310   2.550%, 12/01/56   6/30 at 100.00 AA 8,325,207
28
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Massachusetts (continued)        
$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+ $4,558,590
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) 4,959,684
425   Massachusetts Water Pollution Abatement Trust, Revenue Bonds, MWRA Loan Program, Subordinate Series 1999A, 5.750%, 8/01/29   8/21 at 100.00 AAA 426,810
110,810   Total Massachusetts       141,313,565
    Michigan – 3.2% (2.0% of Total Investments)        
5,490   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 6,839,771
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 4,095,601
2,985   Detroit Water and Sewerage Department, Michigan, Sewage Disposal System Revenue Bonds, Refunding Senior Lien Series 2012A, 5.250%, 7/01/39 (Pre-refunded 7/01/22)   7/22 at 100.00 A1 (5) 3,126,370
    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 4,964,413
2,550   4.000%, 11/15/36   5/25 at 100.00 A 2,815,761
    Michigan Finance Authority, Michigan, Revenue Bonds, Trinity Health Credit Group, Refunding Series 2016MI:        
145   5.000%, 12/01/45 (Pre-refunded 6/01/26) (UB) (6)   6/26 at 100.00 N/R (5) 175,852
9,855   5.000%, 12/01/45 (UB) (6)   6/26 at 100.00 AA- 11,838,614
    Michigan Finance Authority, Revenue Bonds, Trinity Health Credit Group, Refunding Series 2011MI:        
10   5.000%, 12/01/39 (Pre-refunded 12/01/21)   12/21 at 100.00 N/R (5) 10,158
3,240   5.000%, 12/01/39 (Pre-refunded 12/01/21)   12/21 at 100.00 AA- (5) 3,292,747
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 3,534,407
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+ 1,173,110
    Michigan Housing Development Authority, Single Family Mortgage Revenue Bonds, Social Series 2021A:        
21,675   2.350%, 12/01/46 (WI/DD, Settling 8/31/21)   12/30 at 100.00 Aa2 21,624,931
8,280   2.500%, 6/01/52 (WI/DD, Settling 8/31/21)   12/30 at 100.00 Aa2 8,260,873
4,000   Michigan Public Power Agency, AFEC Project Revenue Bonds, Series 2012A, 5.000%, 1/01/43   1/22 at 100.00 BBB+ 4,065,360
    Michigan State Building Authority, Revenue Bonds, Facilities Program, Refunding Series 2011-II-A:        
2,750   5.375%, 10/15/36 (Pre-refunded 10/15/21)   10/21 at 100.00 AA- (5) 2,779,370
8,260   5.375%, 10/15/41 (Pre-refunded 10/15/21)   10/21 at 100.00 AA- (5) 8,348,217
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- 10,160,100
29
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Michigan (continued)        
$13,855   Michigan State Hospital Finance Authority, Revenue Bonds, Trinity Health Care Group, Series 2009C, 5.000%, 12/01/48 (Pre-refunded 6/01/22)   6/22 at 100.00 AA- (5) $14,416,543
    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- 4,197,058
3,600   5.000%, 12/01/45   12/25 at 100.00 A- 4,254,480
112,110   Total Michigan       119,973,736
    Minnesota – 1.8% (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+ 167,670
440   4.000%, 8/01/41   8/26 at 100.00 BB+ 471,662
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- 2,138,200
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+ 1,938,440
    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- 11,121,955
27,325   4.250%, 2/15/48   2/28 at 100.00 A- 31,543,980
1,410   Minneapolis, Minnesota, Charter School Lease Revenue Bonds, Hiawatha Academies Project, Series 2016A, 5.000%, 7/01/47   7/24 at 102.00 N/R 1,519,627
2,635   Minnesota Housing Finance Agency, Residential Housing Finance Bonds, Series 2020E, 2.700%, 7/01/44   7/29 at 100.00 AA+ 2,769,859
    Minnesota Housing Finance Agency, Residential Housing Finance Bonds, Series 2020I:        
2,455   2.150%, 7/01/45   1/30 at 100.00 AA+ 2,472,504
3,930   2.200%, 1/01/51   1/30 at 100.00 AA+ 3,952,126
    Saint Cloud, Minnesota, Charter School Lease Revenue Bonds, Stride Academy Project, Series 2016A:        
405   5.000%, 4/01/36 (4)   4/26 at 100.00 N/R 389,497
605   5.000%, 4/01/46 (4)   4/26 at 100.00 N/R 558,252
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 2,778,025
130   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 133,975
    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) 3,331,111
3,190   5.000%, 11/15/44 (Pre-refunded 11/15/25)   11/25 at 100.00 N/R (5) 3,815,527
61,270   Total Minnesota       69,102,410
30
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Mississippi – 0.2% (0.1% of Total Investments)        
$5,445   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) $5,965,433
1,000   Mississippi Home Corporation, Single Family Mortgage Revenue Bonds, Series 2021A, 2.125%, 12/01/44   6/30 at 100.00 Aaa 1,007,860
6,445   Total Mississippi       6,973,293
    Missouri – 2.3% (1.5% of Total Investments)        
2,960   Chesterfield Valley Transportation Development District, Missouri, Transportation Sales Tax Revenue Bonds, Series 2015, 3.625%, 5/15/31   5/23 at 100.00 A- 3,053,862
    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 425,048
1,520   5.000%, 4/01/46, 144A   4/26 at 100.00 N/R 1,599,146
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 13,919,400
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 4,916,976
    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 1,649,608
1,055   6.000%, 6/01/46, 144A   6/25 at 100.00 N/R 1,109,997
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 2,608,067
    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 1,499,465
2,000   5.000%, 5/01/45   11/23 at 100.00 BBB 2,120,220
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 7,664,870
2,250   Missouri Health and Educational Facilities Authority, Health Facilities Revenue Bonds, Heartland Regional Medical Center, Series 2012, 5.000%, 2/15/43   2/22 at 100.00 A1 2,297,565
    Missouri Health and Educational Facilities Authority, Health Facilities Revenue Bonds, Mosaic Health System, Series 2019A:        
6,330   4.000%, 2/15/44   2/29 at 100.00 A1 7,361,537
13,545   4.000%, 2/15/49   2/29 at 100.00 A1 15,671,971
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+ 438,502
    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 1,840,393
455   5.125%, 12/01/45   12/25 at 100.00 N/R 503,881
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- 5,579,681
31
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Missouri (continued)        
$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 $11,796,168
83,875   Total Missouri       86,056,357
    Montana – 0.0% (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 1,303,251
375   5.250%, 5/15/47   5/25 at 102.00 N/R 411,506
1,550   Total Montana       1,714,757
    Nebraska – 1.2% (0.8% 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+ 16,225,731
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+ 4,662,116
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 1,532,772
    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 2,339,901
2,325   5.000%, 11/01/48   11/25 at 100.00 A 2,670,123
4,010   Lincoln County Hospital Authority 1, Nebraska, Hospital Revenue and Refunding Bonds, Great Plains Regional Medical Center Project, Series 2012, 5.000%, 11/01/42 (Pre-refunded 11/01/21)   11/21 at 100.00 N/R (5) 4,057,679
7,900   Nebraska Investment Finance Authority, Single Family Housing Revenue Bonds, Series 2020A, 2.700%, 9/01/43   3/29 at 100.00 AA+ 8,286,547
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+ 7,259,476
39,555   Total Nebraska       47,034,345
    Nevada – 1.1% (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 460,077
23,605   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 26,875,473
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 3,587,125
1,000   Las Vegas, Nevada, Sales Tax Increment Revenue Bonds, Symphony Park Tourism Improvement District, Series 2016, 4.375%, 6/15/35, 144A   8/21 at 100.00 N/R 1,000,480
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+ 553,680
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 4,343,320
32
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Nevada (continued)        
$4,000   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 $717,800
3,210   Tahoe-Douglas Visitors Authority, Nevada, Stateline Revenue Bonds, Series 2020, 5.000%, 7/01/51   7/30 at 100.00 N/R 3,747,868
39,875   Total Nevada       41,285,823
    New Hampshire – 0.2% (0.1% of Total Investments)        
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 5,274,750
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 1,270,474
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+ 584,150
6,685   Total New Hampshire       7,129,374
    New Jersey – 5.7% (3.7% of Total Investments)        
    New Jersey Economic Development Authority, School Facilities Construction Bonds, Refunding Series 2016BBB:        
34,310   5.500%, 6/15/29   12/26 at 100.00 BBB 42,690,218
2,110   5.500%, 6/15/30   12/26 at 100.00 BBB 2,618,257
    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 7,921,970
5,045   5.500%, 9/01/28  –  NPFG Insured   No Opt. Call BBB 6,659,350
    New Jersey Economic Development Authority, School Facilities Construction Bonds, Series 2015WW:        
655   5.250%, 6/15/40 (Pre-refunded 6/15/25)   6/25 at 100.00 N/R (5) 781,219
11,335   5.250%, 6/15/40   6/25 at 100.00 BBB 13,237,466
600   New Jersey Health Care Facilities Financing Authority, New Jersey, Revenue Bonds, Saint Peters University Hospital, Refunding Series 2011, 6.000%, 7/01/26   8/21 at 100.00 BB+ 601,854
1,500   New Jersey Health Care Facilities Financing Authority, New Jersey, Revenue Bonds, Saint Peters University Hospital, Series 2007, 5.750%, 7/01/37   8/21 at 100.00 BB+ 1,504,770
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 A1 3,748,012
2,035   New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Capital Appreciation Series 2010A, 0.000%, 12/15/26   No Opt. Call BBB 1,912,737
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+ 16,179,800
20,040   New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2014AA, 5.000%, 6/15/44   6/24 at 100.00 BBB 22,318,949
    New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2015AA:        
13,690   4.750%, 6/15/38   6/25 at 100.00 BBB 15,417,267
8,005   5.000%, 6/15/45   6/25 at 100.00 BBB 9,224,001
33
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    New Jersey (continued)        
$5,000   New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2019AA, 5.250%, 6/15/43   12/28 at 100.00 BBB $6,312,200
7,255   New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2020AA, 5.000%, 6/15/50   12/30 at 100.00 BBB 9,202,024
33,200   New Jersey Turnpike Authority, Revenue Bonds, Refunding Series 2005D-1, 5.250%, 1/01/26  –  AGM Insured   No Opt. Call A2 40,157,392
    New Jersey Turnpike Authority, Revenue Bonds, Tender Option Bond Trust 2016-XF1057:        
74   17.437%, 1/01/43 (Pre-refunded 7/01/22), 144A (IF)   7/22 at 100.00 A2 (5) 87,197
126   17.437%, 1/01/43 (Pre-refunded 7/01/22), 144A (IF)   7/22 at 100.00 N/R (5) 148,789
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) 1,248,601
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 5,846,050
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+ 3,696,780
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+ 4,078,906
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 1,580,652
189,015   Total New Jersey       217,174,461
    New Mexico – 0.1% (0.1% of Total Investments)        
3,385   New Mexico Mortgage Finance Authority, Single Family Mortgage Program Bonds, Class 1 Series 2021C, 2.250%, 7/01/46 (WI/DD, Settling 8/19/21)   7/30 at 100.00 Aaa 3,417,936
    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+ 764,209
1,200   5.000%, 5/15/49   5/26 at 103.00 BB+ 1,364,616
5,255   Total New Mexico       5,546,761
    New York – 8.0% (5.1% of Total Investments)        
15,275   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 17,506,677
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 9,798,023
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 7,924,519
20,000   Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose, Series 2021B, 4.000%, 3/15/47   3/31 at 100.00 AA+ 24,007,000
2,250   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 2,457,023
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 15,579,655
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- 4,683,186
34
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    New York (continued)        
    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- $3,107,889
5,600   5.000%, 12/01/45, 144A   6/25 at 100.00 BBB- 6,446,552
7,520   Dormitory Authority of the State of New York, Revenue Bonds, Rockefeller University, Series 2019C, 4.000%, 7/01/49   7/29 at 100.00 AA 9,007,531
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 2,449,681
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 3,093,213
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 3,566,035
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 1,464,716
    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 1,253,294
2,130   4.600%, 2/01/51   2/30 at 100.00 A2 2,199,545
    Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Senior Fiscal 2012 Series 2011A:        
2,215   5.250%, 2/15/47   8/21 at 100.00 A+ 2,222,908
275   5.750%, 2/15/47   8/21 at 100.00 A+ 276,130
    Long Island Power Authority, New York, Electric System Revenue Bonds, Series 2012A:        
3,320   5.000%, 9/01/42 (Pre-refunded 9/01/22)   9/22 at 100.00 N/R (5) 3,497,022
6,680   5.000%, 9/01/42   9/22 at 100.00 A2 7,019,878
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 7,336,967
    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+ 3,495,117
3,155   5.250%, 11/15/55   5/30 at 100.00 BBB+ 3,982,872
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+ 9,807,490
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+ 5,832,750
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+ 2,538,738
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+ 8,799,600
3,585   Monroe County Industrial Development Corporation, New York, Revenue Bonds, Saint Ann?s Community Project, Series 2019, 5.000%, 1/01/50   1/26 at 103.00 N/R 4,066,394
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- 1,125,490
35
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    New York (continued)        
$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 $15,434,400
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+ 13,466,207
11,245   New York City Municipal Water Finance Authority, New York, Water and Sewer System Second General Resolution Revenue Bonds, Fiscal 2021 Series BB-2, 4.000%, 6/15/42   12/30 at 100.00 AA+ 13,609,486
5   New York City, New York, General Obligation Bonds, Fiscal Series 2005M, 5.000%, 4/01/26  –  FGIC Insured   8/21 at 100.00 AA- 5,019
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 31,762,650
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 2,674,253
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 3,677,695
6,500   New York State Mortgage Agency, Homeowner Mortgage Revenue Bonds, Series 211, 3.750%, 10/01/43   4/27 at 100.00 Aa1 7,058,350
5,670   Onondaga Civic Development Corporation, New York, Revenue Bonds, Saint Joseph's Hospital Health Center Project, Series 2012, 5.000%, 7/01/42 (Pre-refunded 7/01/22)   7/22 at 100.00 N/R (5) 5,920,784
20,925   Triborough Bridge and Tunnel Authority, New York, Payroll Mobility Tax Bonds, Senior Lien Subseries 2021A-1, 5.000%, 5/15/51   5/31 at 100.00 AA+ 27,506,540
7,110   TSASC Inc, New York, Tobacco Asset-Backed Bonds, Series 2006, 5.000%, 6/01/48   6/27 at 100.00 N/R 7,888,829
261,885   Total New York       303,550,108
    North Carolina – 0.6% (0.4% of Total Investments)        
10,000   North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, Duke University Health System, Series 2012A, 5.000%, 6/01/42 (Pre-refunded 6/01/22)   6/22 at 100.00 Aa2 (5) 10,409,600
4,725   North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, Vidant Health, Refunding Series 2012A, 5.000%, 6/01/36 (Pre-refunded 6/01/22)   6/22 at 100.00 A2 (5) 4,918,536
2,150   North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, WakeMed, Refunding Series 2012A, 5.000%, 10/01/38   10/22 at 100.00 A2 2,253,609
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 2,405,979
1,690   North Carolina Turnpike Authority, Monroe Expressway Toll Revenue Bonds, Series 2017A, 5.000%, 7/01/54   7/26 at 100.00 Baa3 1,934,813
1,625   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 1,900,584
22,340   Total North Carolina       23,823,121
    North Dakota – 2.2% (1.4% 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- 11,486,280
36
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    North Dakota (continued)        
    Grand Forks, North Dakota, Health Care System Revenue Bonds, Altru Health System Obligated Group, Series 2012:        
$7,000   5.000%, 12/01/29   12/21 at 100.00 Baa2 $7,081,410
6,650   5.000%, 12/01/32   12/21 at 100.00 Baa2 6,723,283
2,245   5.000%, 12/01/35   12/21 at 100.00 Baa2 2,268,954
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 Baa2 5,261,806
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 1,063,780
4,125   North Dakota Housing Finance Agency, Home Mortgage Finance Program Bonds, Series 2020B, 2.500%, 7/01/44   1/30 at 100.00 Aa1 4,265,374
    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- 11,715,400
28,050   5.000%, 6/01/53   6/28 at 100.00 BBB- 32,204,485
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 1,527,338
76,080   Total North Dakota       83,598,110
    Ohio – 9.0% (5.8% 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 Baa2 2,106,160
4,185   Akron, Bath and Copley Joint Township Hospital District, Ohio, Hospital Revenue Bonds, Children's Hospital Medical Center, Improvement & Refunding Series 2012, 5.000%, 11/15/42   5/22 at 100.00 A1 4,333,860
    Allen County, Ohio, Hospital Facilities Revenue Bonds, Catholic Health Partners, Refunding and Improvement Series 2012A:        
2,740   4.000%, 5/01/33 (Pre-refunded 5/01/22)   5/22 at 100.00 A+ (5) 2,820,748
1,930   5.000%, 5/01/33 (Pre-refunded 5/01/22)   5/22 at 100.00 A+ (5) 2,001,236
3,405   5.000%, 5/01/42 (Pre-refunded 5/01/22)   5/22 at 100.00 A+ (5) 3,530,679
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 11,640,369
    Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue Bonds, Refunding Senior Lien Series 2020A-2 Class 1:        
41,535   3.000%, 6/01/48   6/30 at 100.00 BBB+ 44,221,069
7,535   4.000%, 6/01/48   6/30 at 100.00 BBB+ 8,821,903
40,095   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 47,189,810
10,000   Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue Bonds, Senior Lien Series 2007A-3, 6.250%, 6/01/37 (Pre-refunded 6/01/22)   6/22 at 100.00 N/R (5) 10,511,300
37
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Ohio (continued)        
    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 $3,124,962
3,200   5.250%, 11/01/47   11/27 at 100.00 N/R 3,585,760
3,345   Cleveland Heights-University Heights City School District, Ohio, General Obligation Bonds, School Improvement Series 2014, 5.000%, 12/01/51   6/23 at 100.00 A1 3,642,270
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 6,138,100
37,150   Cuyahoga County, Ohio, Certificates of Participation, Convention Hotel Project, Series 2014, 4.375%, 12/01/44 (UB) (6)   6/24 at 100.00 A1 39,905,787
    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+ 1,269,850
1,750   4.000%, 9/01/45   9/29 at 100.00 BB+ 1,888,075
2,000   5.000%, 9/01/49   9/29 at 100.00 BB+ 2,332,660
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- 8,262,994
7,870   Franklin County, Ohio, Hospital Revenue Bonds, Nationwide Children's Hospital Project, Improvement Series 2012A, 5.000%, 11/01/42   5/22 at 100.00 Aa2 8,153,556
3,985   Franklin County, Ohio, Revenue Bonds, Trinity Health Credit Group, Series 2017A, 3.250%, 12/01/42   12/27 at 100.00 AA- 4,377,522
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) (UB)   1/23 at 100.00 Aa3 (5) 6,872,565
    JobsOhio Beverage System, Ohio, Statewide Senior Lien Liquor Profits Revenue Bonds, Tender Option Bond Trust 2016-XG0052:        
390   17.941%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 497,851
1,750   18.066%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 2,237,392
625   18.075%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 799,169
1,250   18.075%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 1,598,338
1,725   18.075%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 2,205,706
2,000   18.075%, 1/01/38 (Pre-refunded 1/01/23), 144A (IF) (6)   1/23 at 100.00 Aa3 (5) 2,557,340
2,885   Lucas County, Ohio, Hospital Revenue Bonds, ProMedica Healthcare Obligated Group, Series 2011A, 6.000%, 11/15/41 (Pre-refunded 11/15/21)   11/21 at 100.00 BBB (5) 2,933,612
    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 5,550,774
6,000   5.250%, 12/01/31  –  AGM Insured   No Opt. Call A2 8,079,000
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 12,585,600
8,500   Ohio Air Quality Development Authority, Ohio, Air Quality Development Revenue Bonds, FirstEnergy Generation Corporation Project, Series 2009A, 5.700%, 8/01/21 (4)   No Opt. Call N/R 10,625
38
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Ohio (continued)        
$1,050   Ohio Air Quality Development Authority, Ohio, Pollution Control Revenue Bonds, FirstEnergy Generation Corporation Project, Refunding Series 2009B, 3.100%, 3/01/23 (4)   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
20,765   Ohio Air Quality Development Authority, Ohio, Pollution Control Revenue Bonds, FirstEnergy Nuclear Generation Project, Refunding Series 2009A, 4.375%, 6/01/33 (Mandatory Put 6/01/22)   No Opt. Call N/R 21,268,551
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 605,032
1,240   Ohio State, Turnpike Revenue Bonds, Ohio Turnpike and Infrastructutre Commission Infrastructure Projects, Junior Lien, Capital Appreciation Series 2013A-3, 0.000%, 2/15/36 (7)   2/31 at 100.00 A+ 1,572,779
4,995   Ohio State, Turnpike Revenue Bonds, Ohio Turnpike and Infrastructutre 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) 5,369,076
1,610   Ohio Water Development Authority, Pollution Control Revenue Bonds, FirstEnergy Nuclear Generating Corporation Project, Refunding Series 2010C, 4.000%, 6/01/33 (4)   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 1,413
20,405   Ohio Water Development Authority, Pollution Control Revenue Refunding Bonds, FirstEnergy Nuclear Generating Corporation Project, Series 2009A, 4.375%, 6/01/33 (Mandatory Put 6/01/22)   No Opt. Call N/R 20,899,821
20,480   Ohio Water Development Authority, Pollution Control Revenue Refunding Bonds, FirstEnergy Nuclear Generating Corporation Project, Series 2010B, 4.375%, 6/01/33 (Mandatory Put 6/01/22)   No Opt. Call N/R 20,976,640
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 3,120,150
    Southeastern Ohio Port Authority, Hosptial 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- 1,149,290
870   6.000%, 12/01/42   12/22 at 100.00 BB- 910,925
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 1,460,101
388,110   Total Ohio       343,127,521
39
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Oklahoma – 0.6% (0.4% of Total Investments)        
    Oklahoma Development Finance Authority, Health System Revenue Bonds, OU Medicine Project, Series 2018B:        
$5,290   5.500%, 8/15/52   8/28 at 100.00 BB+ $6,575,047
10,600   5.500%, 8/15/57   8/28 at 100.00 BB+ 13,143,258
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- 2,715,687
18,230   Total Oklahoma       22,433,992
    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 559,360
220   5.250%, 11/15/50   11/25 at 102.00 N/R 245,795
315   5.375%, 11/15/55   11/25 at 102.00 N/R 352,831
    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 1,088,850
800   5.500%, 10/01/49   10/24 at 100.00 N/R 871,712
2,835   Total Oregon       3,118,548
    Pennsylvania – 6.0% (3.9% 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 16,980,602
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 2,964,993
    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 13,566,934
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 (Mandatory Put 4/01/21)   4/31 at 100.00 N/R 10,144,355
21,945   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+ 24,259,100
    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- 2,757,859
6,420   5.125%, 3/15/46   3/27 at 100.00 BBB- 7,244,392
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 12,569,942
40
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Pennsylvania (continued)        
    Cumberland County Municipal Authority, Pennsylvania, Revenue Bonds, Diakon Lutheran Social Ministries Project, Series 2015:        
$170   5.000%, 1/01/29 (Pre-refunded 1/01/25)   1/25 at 100.00 N/R (5) $196,780
830   5.000%, 1/01/29   1/25 at 100.00 BBB+ 938,066
7,665   Dauphin County General Authority, Pennsylvania, Health System Revenue Bonds, Pinnacle Health System Project, Series 2012A, 5.000%, 6/01/42   6/22 at 100.00 A 7,916,029
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- 3,635,070
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- 1,378,475
    Lehigh County Authority, Pennsylvania, Water and Sewer Revenue Bonds, Allentown Concession, Series 2013A:        
695   5.125%, 12/01/47   12/23 at 100.00 A 764,556
815   5.125%, 12/01/47 (Pre-refunded 12/01/23)   12/23 at 100.00 N/R (5) 908,163
    Montgomery County Industrial Development Authority, Pennsylvania, Health System Revenue Bonds, Albert Einstein Healthcare Network Issue, Series 2015A:        
10,530   5.250%, 1/15/45   1/25 at 100.00 Ba1 11,925,962
1,200   5.250%, 1/15/46   1/25 at 100.00 Ba1 1,359,012
10,765   Pennsylvania Economic Development Financing Authority, Exempt Facilities Revenue Refunding Bonds, PPL Energy Supply, LLC Project, Series 2009A, 6.400%, 12/01/38   9/25 at 100.00 CCC+ 10,506,425
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+ 3,752,280
13,540   Pennsylvania Turnpike Commission, Oil Franchise Tax Revenue Bonds, Senior Series 2018A, 5.250%, 12/01/44   12/28 at 100.00 Aa3 17,565,848
3,705   Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Series 2015A-1, 5.000%, 12/01/45   6/25 at 100.00 A+ 4,283,239
6,450   Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Series 2018A-2, 5.000%, 12/01/43   12/28 at 100.00 A1 8,102,167
11,000   Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Subordinate Series 2009C, 6.250%, 6/01/33  –  AGM Insured   6/26 at 100.00 A2 13,864,180
15,000   Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Subordinate Series 2015B-1, 5.000%, 12/01/45   12/25 at 100.00 A3 17,606,400
5,000   Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Subordinate Series 2019A, 4.000%, 12/01/49   12/29 at 100.00 A3 5,870,450
10,305   Philadelphia Hospitals and Higher Education Facilities Authority, Pennsylvania, Hospital Revenue Bonds, Temple University Health System Obligated Group, Series 2012A, 5.625%, 7/01/42   7/22 at 100.00 Ba1 10,735,440
7,055   Pittsburgh and Allegheny County Sports and Exhibition Authority, Pennsylvania, Hotel Room Excise Tax Revenue Bonds, Refunding Series 2010, 5.000%, 2/01/35  –  AGM Insured   8/21 at 100.00 A2 7,075,248
    Scranton, Pennsylvania, Sewer Authority Revenue Bonds, Series 2011A:        
1,125   5.250%, 12/01/31 (Pre-refunded 12/01/21)  –  AGM Insured   12/21 at 100.00 AA (5) 1,144,238
1,000   5.500%, 12/01/35 (Pre-refunded 12/01/21)  –  AGM Insured   12/21 at 100.00 AA (5) 1,017,920
41
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Pennsylvania (continued)        
$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 $5,967,406
207,640   Total Pennsylvania       227,008,568
    Puerto Rico – 4.1% (2.6% 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 1,615,561
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 2,265,219
26,925   Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Refunding Senior Lien Series 2020A, 5.000%, 7/01/47, 144A   7/30 at 100.00 N/R 32,589,481
    Puerto Rico Aqueduct and Sewerage Authority, Revenue Bonds, Senior Lien Series 2012A:        
2,200   5.125%, 7/01/37   7/22 at 100.00 CCC 2,297,526
7,880   5.250%, 7/01/42   7/22 at 100.00 CCC 8,238,304
8,335   6.000%, 7/01/47   7/22 at 100.00 CCC 8,770,837
600   Puerto Rico Highway and Transportation Authority, Highway Revenue Bonds, Series 2004J, 5.000%, 7/01/29  –  NPFG Insured   8/21 at 100.00 Baa2 615,894
1,500   Puerto Rico Municipal Finance Agency, Series 2002A, 5.250%, 8/01/21  –  AGM Insured   6/21 at 100.00 A2 1,500,000
695   Puerto Rico Public Finance Corporation, Commonwealth Appropriation Bonds, Series 1998A, 5.125%, 6/01/24  –  AMBAC Insured   No Opt. Call AA+ 747,535
    Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Restructured 2018A-1:        
3,013   0.000%, 7/01/31   7/28 at 91.88 N/R 2,437,427
9,828   0.000%, 7/01/33   7/28 at 86.06 N/R 7,390,853
259   4.500%, 7/01/34   7/25 at 100.00 N/R 287,581
3,838   0.000%, 7/01/46   7/28 at 41.38 N/R 1,291,295
15,669   0.000%, 7/01/51   7/28 at 30.01 N/R 3,814,148
17,986   4.750%, 7/01/53   7/28 at 100.00 N/R 20,682,281
23,378   5.000%, 7/01/58   7/28 at 100.00 N/R 27,317,894
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 821,588
    Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Taxable Restructured Cofina Project Series 2019A-2:        
7,857   4.329%, 7/01/40   7/28 at 100.00 N/R 8,948,730
11,680   4.329%, 7/01/40   7/28 at 100.00 N/R 13,302,936
9,274   4.784%, 7/01/58   7/28 at 100.00 N/R 10,709,801
166,335   Total Puerto Rico       155,644,891
    Rhode Island – 1.5% (0.9% 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) 1,121,980
5,650   Rhode Island Housing & Mortgage Finance Corporation, Homeownership Opportunity Bond Program, 2019 Series 71, 3.100%, 10/01/44   4/29 at 100.00 AA+ 6,036,573
42
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Rhode Island (continued)        
$292,435   Rhode Island Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2007A, 0.000%, 6/01/52   8/21 at 16.20 CCC- $48,137,725
299,085   Total Rhode Island       55,296,278
    South Carolina – 2.9% (1.9% 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- 6,458,860
    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- 1,026,820
1,165   4.000%, 4/01/54   4/26 at 103.00 BBB- 1,279,065
1,630   5.000%, 4/01/54   4/26 at 103.00 BBB- 1,875,934
    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 440,608
1,000   5.000%, 1/01/55, 144A   1/30 at 100.00 N/R 1,067,840
    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 1,062,230
750   5.000%, 5/01/42   5/23 at 104.00 N/R 792,705
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 4,883,400
    South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Refunding & Improvement Series 2015A:        
11,430   5.000%, 12/01/50   6/25 at 100.00 A- 13,195,249
34,000   5.000%, 12/01/50 (UB) (6)   6/25 at 100.00 A- 39,250,960
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- 11,119,151
5,075   South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Refunding Series 2014C, 5.000%, 12/01/46   12/24 at 100.00 A- 5,789,915
1,310   South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Series 2013A, 5.125%, 12/01/43   12/23 at 100.00 A- 1,451,297
10,300   South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Series 2014A, 5.500%, 12/01/54   6/24 at 100.00 A- 11,661,145
10,250   Spartanburg Regional Health Services District, Inc, South Carolina, Hosptial Revenue Bonds, Refunding Series 2012A, 5.000%, 4/15/32   4/22 at 100.00 A3 10,568,570
99,435   Total South Carolina       111,923,749
    South Dakota – 0.9% (0.6% of Total Investments)        
15,000   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 18,101,400
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 13,317,936
43
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    South Dakota (continued)        
$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 $4,556,968
30,165   Total South Dakota       35,976,304
    Tennessee – 0.7% (0.5% 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) 13,810,158
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 2,080,621
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 2,311,780
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 2,610,298
3,560   Metropolitan Government of Nashville-Davidson County Health and Educational Facilities Board, Tennessee, Revenue Bonds, Knowledge Academy Charter School, Series 2017A, 5.000%, 6/15/37, 144A (4)   6/27 at 100.00 N/R 2,136,000
1,010   Tennessee Housing Development Agency, Residential Finance Program Bonds, Series 2020-3A, 2.550%, 1/01/45   7/29 at 100.00 AA+ 1,042,421
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 3,000,000
33,960   Total Tennessee       26,991,278
    Texas – 11.4% (7.3% of Total Investments)        
3,520   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 3,785,549
3,045   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 3,268,686
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 6,394,064
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 2,702,775
2,280   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 2,407,498
4,055   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 4,274,132
370   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 391,778
    Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien Series 2020A:        
3,000   5.000%, 1/01/44   1/30 at 100.00 Baa1 3,805,830
3,940   5.000%, 1/01/49   1/30 at 100.00 Baa1 4,967,394
3,335   Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien Series 2020E, 5.000%, 1/01/45   1/30 at 100.00 Baa1 4,221,843
44
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Texas (continued)        
$13,685   Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien, Series 2015A, 5.000%, 1/01/45   7/25 at 100.00 Baa1 $15,769,499
6,375   Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien, Series 2016, 3.375%, 1/01/41   1/26 at 100.00 Baa1 6,862,815
270   Clifton Higher Education Finance Corporation, Texas, Education Revenue Bonds, Idea Public Schools, Series 2012, 3.750%, 8/15/22   No Opt. Call A- 273,691
    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- 789,273
685   4.400%, 12/01/47   12/22 at 100.00 BBB- 706,235
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- 4,481,200
    Club Municipal Management District 1, Texas, Special Assessment Revenue Bonds, Improvement Area 1 Project, Series 2016:        
580   5.750%, 9/01/28   9/23 at 103.00 N/R 637,832
745   6.500%, 9/01/46   9/23 at 103.00 N/R 818,770
11,735   Dallas-Fort Worth International Airport, Texas, Joint Revenue Bonds, Refunding & Improvement Series 2012C, 5.000%, 11/01/45   11/21 at 100.00 A 11,868,310
2,520   Decatur Hospital Authority, Texas, Revenue Bonds, Wise Regional Health System, Series 2013A, 6.375%, 9/01/42   9/23 at 100.00 N/R 2,789,186
400   Decatur Hospital Authority, Texas, Revenue Bonds, Wise Regional Health System, Series 2014A, 5.250%, 9/01/44   9/24 at 100.00 BBB- 446,776
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 1,316,520
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 9,355,742
6,660   Grand Parkway Transportation Corporation, Texas, System Toll Revenue Bonds, Refunding First Tier Series 2020C, 4.000%, 10/01/49   4/30 at 100.00 A2 7,880,112
    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) 22,227,400
10,000   5.000%, 4/01/53 (Pre-refunded 10/01/23) (UB) (6)   10/23 at 100.00 AA (5) 11,059,800
5,470   Grand Parkway Transportation Corporation, Texas, System Toll Revenue Bonds, Tender Option Bond Trust 2015-XF0228, 18.198%, 11/01/44 (Pre-refunded 10/01/23), 144A (IF) (6)   10/23 at 100.00 AA (5) 7,789,553
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 4,876,570
4,645   Harris County Metropolitan Transit Authority, Texas, Sales and Use Tax Revenue Bonds, Series 2011A, 5.000%, 11/01/41 (Pre-refunded 11/01/21)   11/21 at 100.00 Aa2 (5) 4,701,390
4,080   Harris County, Texas, General Obligtion Toll Road Revenue Bonds, Tender Option Bond Trust 2015-XF0074, 14.463%, 8/15/32  –  AGM Insured, 144A (IF)   No Opt. Call AAA 9,448,668
10,000   Harris County, Texas, Toll Road Revenue Bonds, Refunding First Lien Series 2021A, 4.000%, 8/15/50   8/30 at 100.00 Aa2 11,948,900
45
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Texas (continued)        
$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 $1,971,420
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 6,740,760
    Harris County-Houston Sports Authority, Texas, Revenue Bonds, Third Lien Series 2004A-3:        
1,940   0.000%, 11/15/34 (Pre-refunded 11/15/24)  –  NPFG Insured   11/24 at 55.69 Baa2 (5) 1,063,527
14,055   0.000%, 11/15/34  –  NPFG Insured   11/24 at 55.69 BB 7,179,716
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 5,378,850
    Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Convention and Entertainment Project, Series 2001B:        
4,130   0.000%, 9/01/26  –  AMBAC Insured   No Opt. Call A2 3,928,786
4,865   0.000%, 9/01/27  –  AGM Insured   No Opt. Call A2 4,538,559
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 5,212,527
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) 25,720,150
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- 1,079,675
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 1,149,410
    McCamey County Hospital District, Texas, General Obligation Bonds, Series 2013:        
3,095   5.750%, 12/01/33   12/25 at 100.00 B1 3,399,672
3,125   6.125%, 12/01/38   12/25 at 100.00 B1 3,447,250
    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- 2,156,272
1,785   5.000%, 9/15/48   9/25 at 100.00 BBB- 2,019,763
    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- 2,533,195
6,015   5.000%, 11/01/51   11/23 at 103.00 BBB- 6,511,659
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 786,355
210   New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Corpus Christi II, LLC-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) 253,159
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 4,877,451
46
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Texas (continued)        
$820   New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Foundation - San Antonio 1, LLC - Texas A&M University - San Antonio Project,, 5.000%, 4/01/48 (Pre-refunded 4/01/26)   4/26 at 100.00 N/R (5) $986,427
    New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Foundation - Stephenville II, LLC - 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) 1,118,230
2,200   5.000%, 4/01/39 (Pre-refunded 4/01/24)   4/24 at 100.00 N/R (5) 2,460,106
1,600   5.000%, 4/01/46 (Pre-refunded 4/01/24)   4/24 at 100.00 N/R (5) 1,789,168
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) 6,210,672
3,220   North Fort Bend Water Authority, Texas, Water System Revenue Bonds, Series 2011, 5.000%, 12/15/36  –  AGM Insured   12/21 at 100.00 A2 3,275,223
    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) (7)   9/31 at 100.00 N/R (5) 3,678,836
3,910   0.000%, 9/01/45 (Pre-refunded 9/01/31) (7)   9/31 at 100.00 N/R (5) 6,001,029
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+ 6,560,738
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 2,286,440
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 657,171
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 1,107,510
4,440   Round Rock, Texas, Combined Tax and Revenue Certificates of Obligation, Series 2021A, 2.000%, 8/15/46   8/30 at 100.00 AAA 4,262,444
2,410   Tarrant County Cultural Education Facilities Finance Corporation, Texas, Hospital Revenue Bonds, Baylor Health Care System, Series 2011A, 5.000%, 11/15/30 (Pre-refunded 11/15/21)   11/21 at 100.00 AA- (5) 2,443,909
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) 2,075,794
17,640   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- 20,911,867
4,565   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 5,017,163
3,755   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+ 4,195,011
    Texas Department of Housing and Community Affairs, Single Family Mortgage Revenue Bonds, Series 2021A:        
7,250   2.250%, 9/01/46 (WI/DD, Settling 9/01/21)   3/30 at 100.00 AA+ 7,256,235
7,000   2.350%, 9/01/51 (WI/DD, Settling 9/01/21)   3/30 at 100.00 AA+ 7,007,280
47
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Texas (continued)        
    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- $7,015,226
2,735   4.000%, 6/30/37   12/30 at 100.00 BBB- 3,292,366
3,175   Texas Transportation Commission, Central Texas Turnpike System Revenue Bonds, Refunding First Tier Series 2012A, 5.000%, 8/15/41 (Pre-refunded 8/15/22)   8/22 at 100.00 A3 (5) 3,336,989
    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 6,496,152
10,000   0.000%, 8/15/37   8/24 at 56.94 A3 5,498,500
    Texas Transportation Commission, Central Texas Turnpike System Revenue Bonds, Refunding Second Tier Series 2015C:        
5,000   5.000%, 8/15/37   8/24 at 100.00 Baa1 5,586,050
31,810   5.000%, 8/15/42   8/24 at 100.00 Baa1 35,383,535
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 8,854,725
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 4,275,392
1,840   Ysleta Independent School District Public Facility Corporation, Texas, Lease Revenue Refunding Bonds, Series 2001, 5.375%, 11/15/24  –  AMBAC Insured   11/21 at 100.00 AA- 1,867,030
401,080   Total Texas       433,123,165
    Utah – 0.0% (0.0% of Total Investments)        
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 521,320
    Virgin Islands – 0.0% (0.0% 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 1,868,814
    Virginia – 0.8% (0.5% of Total Investments)        
    Embrey Mill Community Development Authority, Virginia, Special Assessment Revenue Bonds, Series 2015:        
1,200   5.300%, 3/01/35, 144A   3/25 at 100.00 N/R 1,284,516
1,085   5.600%, 3/01/45, 144A   3/25 at 100.00 N/R 1,160,961
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 7,070,140
11,380   Hampton Roads Transportation Accountability Commission, Virginia, Hampton Roads Transportation Fund Revenue Bonds, Senior Lien Series 2018A, 5.500%, 7/01/57   1/28 at 100.00 AA 14,249,922
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 2,210,100
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 1,102,220
48
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Virginia (continued)        
$2,025   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 $2,394,502
24,190   Total Virginia       29,472,361
    Washington – 1.9% (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- 5,842,600
1,250   Washington Health Care Facilities Authority, Revenue Bonds, Providence Health & Services, Tender Option Bond Trust 2015-XF0148, 18.012%, 10/01/44, 144A (IF) (6)   10/24 at 100.00 AA- 1,945,487
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 26,316,176
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) 7,032,472
    Washington State Housing Finance Commission, Non-profit Housing Revenue Bonds, Presbyterian Retirement Communities Northwest Proejct, Refunding Series 2016A:        
5,450   5.000%, 1/01/46, 144A   1/25 at 102.00 BB 5,994,727
3,650   5.000%, 1/01/51, 144A   1/25 at 102.00 BB 4,008,503
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+ 20,075,283
63,970   Total Washington       71,215,248
    West Virginia – 1.3% (0.8% 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 2,209,491
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 528,724
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) 44,923,378
43,315   Total West Virginia       47,661,593
    Wisconsin – 3.8% (2.5% 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 1,906,887
305   5.125%, 2/01/46, 144A   2/26 at 100.00 N/R 329,659
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 1,844,225
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 524,880
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 1,591,577
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 6,166,260
49
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Wisconsin (continued)        
    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 $1,038,720
1,790   5.625%, 6/15/47, 144A   6/27 at 100.00 N/R 1,875,795
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 41,082,444
1,700   Public Finance Authority of Wisconsin, Revenue Bonds, Alabama Proton Therapy Center, Senior Series 2017A, 7.000%, 10/01/47, 144A   10/27 at 100.00 N/R 1,757,579
    Public Finance Authority of Wisconsin, Revenue Bonds, Prime Healthcare Foundation, Inc, Series 2017A:        
1,410   5.000%, 12/01/27   No Opt. Call BBB- 1,599,194
1,815   5.200%, 12/01/37   12/27 at 100.00 BBB- 2,196,622
    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 1,584,440
4,765   5.000%, 4/01/50, 144A   4/30 at 100.00 BB 5,724,337
    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- 4,544,100
1,575   5.000%, 6/15/48, 144A   6/26 at 100.00 BBB- 1,748,250
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 2,803,025
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 6,907,507
    Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Marshfield Clinic, Series 2012B:        
3,505   4.500%, 2/15/40   2/22 at 100.00 A- 3,544,606
1,485   5.000%, 2/15/40   2/22 at 100.00 A- 1,514,789
    Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Mercy Alliance, Inc, Series 2012:        
11,000   5.000%, 6/01/32   6/22 at 100.00 A3 11,403,150
1,500   5.000%, 6/01/39   6/22 at 100.00 A3 1,554,090
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 1,619,723
16,200   Wisconsin Health and Educational Facilities Authority, Revenus Bonds, Gundersen Lutheran, Series 2011A, 5.250%, 10/15/39   10/21 at 100.00 A1 16,367,346
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 1,071,410
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) 2,713,366
50
Principal Amount (000)   Description (1)   Optional Call Provisions (2) Ratings (3) Value
    Wisconsin (continued)        
    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 $1,042,650
1,500   5.500%, 10/01/49   10/22 at 102.00 N/R 1,565,745
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 1,127,350
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 1,995,484
    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- 573,166
1,350   5.000%, 9/15/45   9/22 at 100.00 BBB- 1,402,718
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) 1,098,640
    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 2,670,191
1,775   5.250%, 12/01/49   12/22 at 102.00 N/R 1,851,840
    Wisconsin Housing and Economic Development Authority, Housing Revenue Bonds, Series 2019A:        
2,800   3.150%, 11/01/44   11/28 at 100.00 Aa3 3,001,012
4,000   3.200%, 11/01/49   11/28 at 100.00 Aa3 4,267,920
133,410   Total Wisconsin       145,610,697
    Wyoming – 0.1% (0.0% of Total Investments)        
    Teton County Hospital District, Wyoming, Hospital Revenue Bonds, St John's Medical Center Project, Series 2011B:        
1,000   5.500%, 12/01/27 (Pre-refunded 12/01/21)   12/21 at 100.00 N/R (5) 1,017,420
1,000   6.000%, 12/01/36 (Pre-refunded 12/01/21)   12/21 at 100.00 N/R (5) 1,018,990
2,000   Total Wyoming       2,036,410
$5,971,938   Total Municipal Bonds (cost $5,182,783,442)       5,887,601,461
    
51
NVG Nuveen AMT-Free Municipal Credit Income Fund (continued)
  Portfolio of Investments July 31, 2021
  (Unaudited)
Shares   Description (1)       Value
    COMMON STOCKS – 0.6% (0.4% of Total Investments)        
    Electric Utilities – 0.6% (0.4% of Total Investments)        
676,308   Energy Harbor Corp (9), (10), (11)       $23,417,164
    Total Common Stocks (cost $15,015,822)       23,417,164
    Total Long-Term Investments (cost $5,197,799,264)       5,911,018,625
    Floating Rate Obligations – (4.9)%       (187,400,000)
    Adjustable Rate MuniFund Term Preferred Shares, net of deferred offering costs – (2.9)% (12)       (111,921,187)
    MuniFund Preferred Shares, net of deferred offering costs – (10.6)% (13)       (404,125,621)
    Variable Rate Demand Preferred Shares, net of deferred offering costs – (37.0)% (14)       (1,408,179,930)
    Other Assets Less Liabilities – 0.2%       8,628,271
    Net Assets Applicable to Common Shares – 100%       $3,808,020,158
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:
  Level 1 Level 2 Level 3 Total
Long-Term Investments:        
Municipal Bonds $ — $5,884,740,721 $2,860,740 $5,887,601,461
Common Stocks  — 23,417,164  — 23,417,164
Total $ — $5,908,157,885 $2,860,740 $5,911,018,625
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(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) 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.  
(8) 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.  
(9) Common Stock received as part of the bankruptcy settlements 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.  
(10) For fair value measurement disclosure purposes, investment classified as Level 2.  
(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 1.9%.  
(13) MuniFund Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 6.8%.  
(14) Variable Rate Demand Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 23.8%.  
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.  
53