NPORT-EX 2 NPORT_523A_1953831567.htm
Quarterly Report
February 28, 2021
MFS®  High Income  
Municipal Trust
CXE-Q1

Portfolio of Investments
2/28/21 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by jurisdiction.
Issuer     Shares/Par Value ($)
Municipal Bonds - 152.8%
Alabama - 3.0%
Birmingham, AL, Airport Authority Rev., BAM, 4%, 7/01/2040   $ 70,000 $79,843
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 5.5%, 6/01/2030     105,000 110,804
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 5.75%, 6/01/2035     115,000 120,385
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 5.75%, 6/01/2045     155,000 159,574
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 6%, 6/01/2050     165,000 171,285
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2026     130,000 110,936
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2029     185,000 129,531
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2034     260,000 128,089
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, “B”, AGM, 0%, 10/01/2035     500,000 230,605
Jefferson County, AL, Sewer Rev. Warrants, Subordinate Lien, “D”, 5%, 10/01/2021     95,000 97,769
Jefferson County, AL, Sewer Rev. Warrants, Subordinate Lien, “D”, 5%, 10/01/2023     140,000 157,370
Pell City, AL, Special Care Facilities Financing Authority Rev. (Noland Health Services, Inc.), 5%, 12/01/2039     225,000 230,578
Tuscaloosa County, AL, Industrial Development Authority, Gulf Opportunity Zone (Hunt Refining Project), “A”, 4.5%, 5/01/2032 (n)     630,000 699,886
Tuscaloosa County, AL, Industrial Development Authority, Gulf Opportunity Zone (Hunt Refining Project), “A”, 5.25%, 5/01/2044 (n)     1,670,000 1,897,471
University of South Alabama, Facilities Rev., “A”, BAM, 5%, 4/01/2044     305,000 368,205
University of South Alabama, Facilities Rev., “A”, BAM, 5%, 4/01/2049     190,000 227,951
        $4,920,282
Arizona - 3.5%
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), 4%, 7/01/2029 (n)   $ 25,000 $27,002
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), 5%, 7/01/2039 (n)     40,000 45,478
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), 5%, 7/01/2049 (n)     65,000 72,687
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), 5%, 7/01/2054 (n)     90,000 100,228
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “A”, 5%, 7/01/2038     25,000 29,371
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “A”, 5%, 7/01/2048     55,000 63,401
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “A”, 5%, 7/01/2052     70,000 80,541
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “B”, 5.5%, 7/01/2038 (n)     55,000 62,523
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “B”, 5.625%, 7/01/2048 (n)     110,000 124,268
Arizona Industrial Development Authority Education Rev. (Academies of Math & Science), “B”, 5.75%, 7/01/2053 (n)     175,000 198,357
Arizona Industrial Development Authority Education Rev. (Basis Schools Projects), “D”, 5%, 7/01/2037 (n)     25,000 28,231
Arizona Industrial Development Authority Education Rev. (Basis Schools Projects), “D”, 5%, 7/01/2047 (n)     40,000 44,409
Arizona Industrial Development Authority Education Rev. (Basis Schools Projects), “D”, 5%, 7/01/2051 (n)     105,000 116,320
Arizona Industrial Development Authority Education Rev. (Somerset Academy of Las Vegas - Lone Mountain Campus), “A”, 3.75%, 12/15/2029 (n)     25,000 26,301
Arizona Industrial Development Authority Education Rev. (Somerset Academy of Las Vegas - Lone Mountain Campus), “A”, 5%, 12/15/2039 (n)     15,000 16,302
Arizona Industrial Development Authority Education Rev. (Somerset Academy of Las Vegas - Lone Mountain Campus), “A”, 5%, 12/15/2049 (n)     30,000 32,229
Arizona Industrial Development Authority Senior Living Rev. (Great Lakes Senior Living Facilities LLC, First Tier), “A”, 5%, 1/01/2043     160,000 149,123
Arizona Industrial Development Authority Senior Living Rev. (Great Lakes Senior Living Facilities LLC, First Tier), “A”, 5%, 1/01/2054     190,000 170,080
Glendale, AZ, Industrial Development Authority Refunding Rev. (Terraces of Phoenix Project), “A”, 5%, 7/01/2048     70,000 72,647
Glendale, AZ, Industrial Development Authority, Senior Living Rev. (Royal Oaks - Inspirata Pointe Project), “A”, 5%, 5/15/2056     310,000 344,925
La Paz County, AZ, Industrial Development Authority Education Facility Lease Rev. (Charter School Solutions-Harmony Public Schools Project), “A”, 5%, 2/15/2048     100,000 113,583
Phoenix, AZ, Industrial Development Authority Rev. (Guam Facilities Foundation, Inc.), 5.125%, 2/01/2034     435,000 448,889
Phoenix, AZ, Industrial Development Authority Rev. (Guam Facilities Foundation, Inc.), 5.375%, 2/01/2041     280,000 290,181
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Basis Schools Projects), “A”, 5%, 7/01/2035 (n)     125,000 136,779
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Basis Schools Projects), “A”, 5%, 7/01/2035 (n)     45,000 49,240
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Basis Schools Projects), “A”, 5%, 7/01/2045 (n)     205,000 221,094
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Basis Schools Projects), “A”, 5%, 7/01/2046 (n)     110,000 118,589
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), “A”, 5%, 7/01/2034     445,000 482,122
1

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Arizona - continued
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), “A”, 5%, 7/01/2044   $ 280,000 $299,645
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 6.5%, 7/01/2034 (n)     145,000 167,643
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2035 (n)     195,000 210,062
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 6.75%, 7/01/2044 (n)     235,000 270,661
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2045 (n)     215,000 228,111
Phoenix, AZ, Industrial Development Authority, Student Housing Refunding Rev. (Downtown Phoenix Student Housing LLC-Arizona State University Project), “A”, 5%, 7/01/2042     100,000 111,672
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 4.75%, 6/15/2037 (n)     210,000 213,421
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2047 (n)     165,000 167,744
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2052 (n)     115,000 116,840
Tempe, AZ, Industrial Development Authority Rev. (Friendship Village), “A”, 6%, 12/01/2032     75,000 76,399
Tempe, AZ, Industrial Development Authority Rev. (Friendship Village), “A”, 6.25%, 12/01/2042     220,000 223,819
Tempe, AZ, Industrial Development Authority Rev. (Friendship Village), “A”, 6.25%, 12/01/2046     85,000 86,413
        $5,837,330
Arkansas - 0.5%
Arkansas Development Finance Authority, Charter School Capital Improvement Rev. (LISA Academy Project), 4%, 7/01/2028   $ 40,000 $41,266
Arkansas Development Finance Authority, Charter School Capital Improvement Rev. (LISA Academy Project), 4.5%, 7/01/2033     80,000 82,752
Arkansas Development Finance Authority, Charter School Capital Improvement Rev. (LISA Academy Project), 4.5%, 7/01/2039     10,000 10,289
Arkansas Development Finance Authority, Health Care Rev. (Baptist Memorial Health Care Corp.), “B-1”, 5%, 9/01/2044     245,000 297,050
Arkansas Development Finance Authority, Hospital Rev. (Washington Regional Medical Center), “A”, 5%, 2/01/2035     40,000 44,258
Arkansas Development Finance Authority, Hospital Rev. (Washington Regional Medical Center), “C”, 5%, 2/01/2033     60,000 66,611
Arkansas Development Finance Authority, Tobacco Settlement Rev. (Cancer Research Center Project), Capital Appreciation, AAC, 0%, 7/01/2046     610,000 268,431
        $810,657
California - 10.0%
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2031   $ 350,000 $293,482
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2032     355,000 289,502
Beverly Hills, CA, Unified School District (Election of 2008), Capital Appreciation, 0%, 8/01/2033     715,000 566,509
California County Tobacco Securitization Agency Settlement (Los Angeles County Securitization Corp.), “A”, 4%, 6/01/2040     55,000 64,634
California Educational Facilities Authority Rev. (Chapman University), 5%, 4/01/2031     190,000 190,559
California M-S-R Energy Authority Gas Rev., “A”, 7%, 11/01/2034     155,000 238,328
California Municipal Finance Authority Rev. (Community Medical Centers), “A”, 5%, 2/01/2042     110,000 126,022
California Municipal Finance Authority Rev. (NorthBay Healthcare Group), 5%, 11/01/2035     45,000 48,970
California Municipal Finance Authority Rev. (NorthBay Healthcare Group), “A”, 5.25%, 11/01/2036     115,000 132,151
California Municipal Finance Authority Rev. (NorthBay Healthcare Group), “A”, 5.25%, 11/01/2041     105,000 119,474
California Municipal Finance Authority Rev. (NorthBay Healthcare Group), “A”, 5.25%, 11/01/2047     15,000 16,935
California Municipal Finance Authority Rev. (William Jessup University), 5%, 8/01/2039     150,000 163,984
California Municipal Finance Authority, Charter School Lease Rev. (Palmdale Aerospace Academy Project), “A”, 3.875%, 7/01/2028 (n)     100,000 105,551
California Municipal Finance Authority, Charter School Lease Rev. (Palmdale Aerospace Academy Project), “A”, 5%, 7/01/2049 (n)     100,000 110,916
California Pollution Control Financing Authority, Solid Waste Disposal Rev. (CalPlant I Project), 8%, 7/01/2039 (a)(d)(z)     460,000 299,000
California Pollution Control Financing Authority, Solid Waste Disposal Subordinate Rev. (CalPlant I Project), 7.5%, 12/01/2039 (a)(d)     630,000 192,150
California Public Works Board Lease Rev., Department of Corrections and Rehabilitation (Various Correctional Facilities), “A”, 5%, 9/01/2033     1,290,000 1,480,817
California School Finance Authority, School Facility Rev. (Alliance for College-Ready Public Schools Projects), “A”, 5%, 7/01/2030 (n)     45,000 51,429
California School Finance Authority, School Facility Rev. (Alliance for College-Ready Public Schools Projects), “A”, 5%, 7/01/2045 (n)     130,000 145,110
California School Finance Authority, School Facility Rev. (ICEF View Park Elementary and Middle Schools), “A”, 5.875%, 10/01/2044     150,000 163,415
California Statewide Communities Development Authority Rev. (California Baptist University), “A”, 6.125%, 11/01/2033     100,000 110,756
2

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
California - continued
California Statewide Communities Development Authority Rev. (California Baptist University), “A”, 5%, 11/01/2041 (n)   $ 115,000 $130,279
California Statewide Communities Development Authority Rev. (Lancer Plaza Project), 5.625%, 11/01/2033     125,000 134,969
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5.25%, 12/01/2034     225,000 250,891
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5.25%, 12/01/2044     465,000 510,505
California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), “A”, 5.25%, 12/01/2056 (n)     290,000 324,475
California Statewide Communities Development Authority, College Housing Rev. (NCCD-Hooper Street LLC College of the Arts Project), 5.25%, 7/01/2049 (n)     185,000 200,146
California Statewide Communities Development Authority, Essential Housing Rev. (Jefferson-Anaheim), “A-2”, 3.125%, 8/01/2056 (n)     145,000 132,576
CSCDA Community Improvement Authority, California Essential Housing Rev. (Renaissance at City Center), “A”, 5%, 7/01/2051 (n)     113,826 132,924
Downey, CA, Unified School District (Election of 2014), “B”, 4%, 8/01/2041     1,990,000 2,295,186
Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A”, 3.5%, 6/01/2036     120,000 122,238
Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., “A”, 5.25%, 6/01/2047     175,000 181,547
Hastings Campus Housing Finance Authority Rev., “A”, 5%, 7/01/2061 (n)     580,000 651,172
Hastings Campus Housing Finance Authority Rev., Convertible Capital Appreciation, “B”, 0% to 7/01/2035, 6.75% to 7/01/2061 (n)     590,000 310,157
Hawthorne, CA, School District (Election of 2018), “A”, BAM, 4%, 8/01/2047     895,000 1,015,673
Inland Valley, CA, Development Successor Agency Tax Allocation, “A”, AGM, 5%, 9/01/2044     260,000 286,606
Jurupa, CA, Public Financing Authority, Special Tax Rev., “A”, 5%, 9/01/2042     215,000 240,493
La Verne, CA, Brethren Hillcrest Homes, COP, 5%, 5/15/2036 (Prerefunded 5/15/2022)     65,000 69,395
Long Beach, CA, Marina Rev. (Alamitos Bay Marina Project), 5%, 5/15/2035     40,000 44,620
Los Angeles County, CA, Regional Financing Authority Rev. (Montecedro, Inc. Project), “A”, CALHF, 5%, 11/15/2034     50,000 53,234
Los Angeles County, CA, Regional Financing Authority Rev. (Montecedro, Inc. Project), “A”, CALHF, 5%, 11/15/2044     80,000 84,695
Morongo Band of Mission Indians California Rev., “B”, 5%, 10/01/2042 (n)     195,000 222,115
San Diego, CA, Redevelopment Agency, Tax Allocation Rev., Capital Appreciation, AGM, 0%, 9/01/2022     1,910,000 1,897,279
San Francisco, CA, City & County Airports Commission, International Airport Rev., “A”, 5%, 1/01/2047     255,000 303,124
San Francisco, CA, City & County Redevelopment Successor Agency, Tax Allocation (Mission Bay South Redevelopment Project), “A”, 5%, 8/01/2043     35,000 38,697
State of California, 5.25%, 10/01/2028     425,000 437,520
State of California, 5.25%, 9/01/2030     1,005,000 1,030,366
Transbay Joint Powers Authority, CA, Senior Tax Allocation, “A”, 5%, 10/01/2049     95,000 115,331
Whittier, CA, Health Facility Rev. (PIH Health), 5%, 6/01/2044     430,000 478,022
        $16,603,929
Colorado - 8.8%
Arvada, CO, Vauxmont Metropolitan District Rev., AGM, 5%, 12/15/2030   $ 18,000 $20,655
Arvada, CO, Vauxmont Metropolitan District Rev., AGM, 5%, 12/01/2050     76,000 90,670
Colorado Educational & Cultural Facilities Authority Rev. (Classical Academy Project), 5%, 12/01/2031     85,000 95,396
Colorado Educational & Cultural Facilities Authority Rev. (Classical Academy Project), “A”, 5%, 12/01/2038     95,000 105,372
Colorado Educational & Cultural Facilities Authority Rev. (Peak to Peak Charter School Project), 5%, 8/15/2030     50,000 56,061
Colorado Educational & Cultural Facilities Authority Rev. (Peak to Peak Charter School Project), 5%, 8/15/2034     50,000 55,629
Colorado Educational & Cultural Facilities Authority, Charter School Refunding and Improvement Rev. (American Academy Project), 5%, 12/01/2055     1,200,000 1,443,660
Colorado Educational & Cultural Facilities Authority, Charter School Refunding and Improvement Rev. (Prospect Ridge Academy Project), “A”, 5%, 3/15/2055     570,000 687,283
Colorado Educational & Cultural Facilities Authority, Charter School Refunding and Improvement Rev. (Thomas MacLaren State Charter School Project), “A”, 5%, 6/01/2050     230,000 279,022
Colorado Health Facilities Authority Rev. (American Baptist Homes), 8%, 8/01/2043     250,000 267,015
Colorado Health Facilities Authority Rev. (CommonSpirit Health), “A-2”, 4%, 8/01/2044     175,000 194,070
Colorado Health Facilities Authority Rev. (Evangelical Lutheran Good Samaritan Society), 5.625%, 6/01/2043 (Prerefunded 6/01/2023)     130,000 145,523
Colorado Health Facilities Authority, Hospital Rev. (AdventHealth Obligated Group), “A”, 4%, 11/15/2038     2,975,000 3,442,581
Denver, CO, Broadway Station Metropolitan District No. 2, “A”, 5.125%, 12/01/2048     500,000 539,560
Denver, CO, City & County Airport Systems Rev., “A”, 5%, 11/15/2028     205,000 221,314
Denver, CO, City & County Airport Systems Rev., “B”, ETM, 6.125%, 11/15/2025     2,840,000 2,962,489
Denver, CO, City & County Airport Systems Rev., “C”, ETM, 6.125%, 11/15/2025     2,280,000 2,630,117
3

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Colorado - continued
Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2035   $ 80,000 $91,149
Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2036     50,000 56,822
Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2040     135,000 152,098
Denver, CO, Health & Hospital Authority Rev. (550 Acoma, Inc.), COP, 5%, 12/01/2048     100,000 118,011
Denver, CO, Health & Hospital Authority Rev., “A”, 4%, 12/01/2040     255,000 288,265
Denver, CO, Health & Hospital Authority Rev., “A”, 5.25%, 12/01/2045     125,000 134,935
Park Creek Metropolitan District, CO, Senior Limited Property Tax Supported Rev., “A”, NPFG, 5%, 12/01/2045     475,000 540,830
        $14,618,527
Connecticut - 0.6%
Connecticut Health & Educational Facilities Authority Rev. (Griffin Hospital), “G-1”, 5%, 7/01/2050 (n)   $ 150,000 $165,284
Mohegan Tribal Finance Authority, CT, Economic Development Bonds, 7%, 2/01/2045 (n)     780,000 780,343
        $945,627
Delaware - 0.4%
Delaware Health Facilities Authority Rev. (Beebe Medical Center Project), 5%, 6/01/2043   $ 230,000 $268,497
Delaware Health Facilities Authority Rev. (Beebe Medical Center Project), 5%, 6/01/2048     115,000 133,834
Kent County, DE, Student Housing and Dining Facility Rev. (CHF-Dover LLC-Delaware State University Project), “A”, 5%, 7/01/2048     110,000 119,108
Kent County, DE, Student Housing and Dining Facility Rev. (CHF-Dover LLC-Delaware State University Project), “A”, 5%, 7/01/2058     120,000 129,184
        $650,623
District of Columbia - 1.6%
District of Columbia Rev. (Rocketship D.C.), “A”, 5%, 6/01/2039 (n)   $ 250,000 $276,777
District of Columbia Student Dormitory Rev. (Provident Group - Howard Properties LLC), 5%, 10/01/2030     175,000 175,151
District of Columbia Student Dormitory Rev. (Provident Group - Howard Properties LLC), 5%, 10/01/2035     850,000 845,614
District of Columbia Student Dormitory Rev. (Provident Group - Howard Properties LLC), 5%, 10/01/2045     985,000 969,890
Metropolitan Washington, D.C., Airport Authority, Toll Road Subordinate Lien Refunding Rev. (Dulles Metrorail and Capital Improvement Project), “B”, AGM, 4%, 10/01/2053     320,000 357,034
        $2,624,466
Florida - 8.2%
Arborwood Community Development District, FL, Capital Improvement Refunding Rev. (Subordinate Lien), “A-2”, 5%, 5/01/2036   $ 130,000 $141,602
Bellalago, FL, Educational Facilities Benefit District Capital Improvement Refunding Rev., 4.375%, 5/01/2030     105,000 116,033
Bellalago, FL, Educational Facilities Benefit District Capital Improvement Refunding Rev., 4.5%, 5/01/2033     50,000 55,321
Bellalago, FL, Educational Facilities Benefit District Capital Improvement Refunding Rev., 4.6%, 5/01/2034     75,000 83,058
Capital Region Community Development District, FL, Capital Improvement Rev., “A-1”, 5.125%, 5/01/2039     185,000 198,022
Collier County, FL, Educational Facilities Authority Rev. (Ave Maria University, Inc. Project), “A”, 6.125%, 6/01/2043     425,000 452,867
Collier County, FL, Industrial Development Authority, Continuing Care Community Rev. (Arlington of Naples Project), “A”, 8.125%, 5/15/2044 (a)(d)(z)     610,000 372,100
Collier County, FL, Industrial Development Authority, Continuing Care Community Rev. (Arlington of Naples Project), “A”, 6.5%, 5/15/2049 (a)(d)(z)     100,000 61,000
Daytona Beach, FL, Halifax Hospital Medical Center Rev., 5%, 6/01/2035     170,000 190,038
Daytona Beach, FL, Halifax Hospital Medical Center Rev., 5%, 6/01/2046     235,000 258,157
Florida Capital Trust Agency, Educational Facilities Rev. (Florida Charter Educational Foundation, Inc. Project), “A”, 5.375%, 6/15/2048 (n)     140,000 152,793
Florida Capital Trust Agency, Educational Facilities Rev. (Renaissance Charter School, Inc. Project), “A”, 5%, 6/15/2039 (n)     155,000 167,443
Florida Capital Trust Agency, Educational Facilities Rev. (Renaissance Charter School, Inc. Project), “A”, 5%, 6/15/2049 (n)     610,000 651,590
Florida Development Finance Corp. Educational Facilities Rev. (Florida Charter Educational Foundation, Inc. Project), “A”, 6.375%, 6/15/2046 (n)     175,000 201,262
Florida Development Finance Corp. Educational Facilities Rev. (Renaissance Charter School), “A”, 6%, 6/15/2032 (n)     140,000 145,487
Florida Development Finance Corp. Educational Facilities Rev. (Renaissance Charter School), “A”, 6.125%, 6/15/2043 (n)     295,000 305,089
Florida Development Finance Corp. Educational Facilities Rev. (Renaissance Charter School), “A”, 8.5%, 6/15/2044     555,000 622,588
Florida Development Finance Corp. Educational Facilities Rev. (River City Science Academy Projects), “A”, 4%, 7/01/2055     40,000 42,126
Florida Development Finance Corp. Educational Facilities Rev. (Southwest Charter Foundation, Inc. Project), “A”, 6%, 6/15/2037 (n)     100,000 106,660
4

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Florida - continued
Florida Development Finance Corp. Educational Facilities Rev. (Southwest Charter Foundation, Inc. Project), “A”, 6.125%, 6/15/2047 (n)   $ 200,000 $211,218
Florida Higher Educational Facilities Financing Authority Rev. (Jacksonville University Project), “A”, 4.5%, 6/01/2033 (n)     100,000 113,143
Florida Higher Educational Facilities Financing Authority Rev. (Jacksonville University Project), “A”, 4.75%, 6/01/2038 (n)     100,000 113,232
Florida Higher Educational Facilities Financing Authority Rev. (Jacksonville University Project), “A”, 5%, 6/01/2048 (n)     110,000 124,112
Homestead, FL, Community Development District, Special Assessment, “A”, 6%, 5/01/2037     470,000 389,809
Jacksonville, FL, Educational Facilities Rev. (Jacksonville University Project), “B”, 5%, 6/01/2053 (n)     115,000 129,319
Lakewood Ranch Stewardship District, FL, Special Assessment Rev. (Lakewood Centre North Project), 4.25%, 5/01/2025     100,000 103,892
Lakewood Ranch Stewardship District, FL, Special Assessment Rev. (Lakewood Centre North Project), 4.875%, 5/01/2035     100,000 106,708
Lakewood Ranch Stewardship District, FL, Special Assessment Rev. (Lakewood Centre North Project), 4.875%, 5/01/2045     110,000 116,250
Lakewood Ranch Stewardship District, FL, Special Assessment Rev. (Lakewood National and Polo Run Projects), 5.375%, 5/01/2047     165,000 181,916
Marshall Creek, FL, Community Development District Rev. (St. John's County), “A”, 5%, 5/01/2032     105,000 110,645
Martin County, FL, Health Facilities Authority Hospital Rev. (Cleveland Clinic Health System), “A”, 4%, 1/01/2046     280,000 316,924
Miami-Dade County, FL, Aviation Rev., “A”, 4%, 10/01/2040     445,000 515,715
Miami-Dade County, FL, Industrial Development Authority Rev. (Pinecrest Academy Project), 5.25%, 9/15/2044     370,000 398,531
Mid-Bay Bridge Authority Rev., FL, Springing Lien, “A”, 7.25%, 10/01/2040 (Prerefunded 10/01/2021)     1,015,000 1,056,737
Midtown Miami, FL, Community Development District Special Assessment (Infrastructure Project), “B”, 5%, 5/01/2029     125,000 130,803
Midtown Miami, FL, Community Development District Special Assessment (Parking Garage Project), “A”, 5%, 5/01/2037     100,000 103,518
North Broward, FL, Hospital District Rev. (Broward Health), “B”, 5%, 1/01/2042     475,000 552,909
Orlando, FL, Senior Tourist Development Tax Refunding Rev. (6th Cent Contract Payments), “A”, AGM, 5%, 11/01/2034     30,000 36,825
Osceola County, FL, Transportation Improvement and Refunding Rev. (Osceola Parkway), “A-1”, 5%, 10/01/2049     105,000 126,607
Osceola County, FL, Transportation Improvement and Refunding Rev. (Osceola Parkway), Capital Appreciation, “A-2”, 0%, 10/01/2037     195,000 116,756
Osceola County, FL, Transportation Improvement and Refunding Rev. (Osceola Parkway), Capital Appreciation, “A-2”, 0%, 10/01/2042     320,000 155,965
Palm Beach County, FL, Health Facilities Authority Rev. (Sinai Residences of Boca Raton Project), 7.5%, 6/01/2049     150,000 161,898
Pasco County, FL, Bexley Community Development District, Special Assessment Rev., 4.7%, 5/01/2036     105,000 110,495
Pasco County, FL, Bexley Community Development District, Special Assessment Rev., 4.875%, 5/01/2047     190,000 199,487
Pasco County, FL, Del Webb Bexley Community Development District, Special Assessment Rev., 5.4%, 5/01/2049     120,000 131,640
Pasco County, FL, Estancia at Wiregrass Community Development District, Capital Improvement, 7%, 11/01/2045     135,000 161,978
Pasco County, FL, Estancia at Wiregrass Community Development District, Capital Improvement, 5.375%, 11/01/2046     95,000 100,953
Sarasota County, FL, Health Facility Authority Retirement Facility Improvement Rev. (Village on the Isle Project), “A”, 5%, 1/01/2047     70,000 74,766
Sarasota County, FL, Health Facility Authority Retirement Facility Improvement Rev. (Village on the Isle Project), “A”, 5%, 1/01/2052     130,000 138,667
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5%, 7/01/2026     25,000 27,595
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5%, 7/01/2029     25,000 27,302
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5.125%, 7/01/2034     50,000 54,409
Sumter County, FL, Industrial Development Authority Hospital Rev. (Central Florida Health Alliance Projects), “A”, 5.25%, 7/01/2044     150,000 162,016
Tallahassee, FL, Health Facilities Rev. (Tallahassee Memorial Healthcare, Inc.), “A”, 5%, 12/01/2040     430,000 477,046
Tallahassee, FL, Health Facilities Rev. (Tallahassee Memorial Healthcare, Inc.), “A”, 5%, 12/01/2044     165,000 181,609
Tampa, FL (University of Tampa Project), 5%, 4/01/2040     105,000 116,997
Tampa, FL, Capital Improvement Cigarette Tax Allocation (H. Lee Moffitt Cancer Center Project), Capital Appreciation, “A”, 0%, 9/01/2045     1,740,000 720,551
Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), “B”, 5%, 7/01/2050     320,000 392,944
Trout Creek Community Development District, FL, Capital Improvement Rev., 5.5%, 5/01/2035     215,000 229,710
Trout Creek Community Development District, FL, Capital Improvement Rev., 5.625%, 5/01/2045     390,000 415,603
Westridge, FL, Community Development District, Capital Improvement Rev., 5.8%, 5/01/2037     130,000 130,070
        $13,550,506
5

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Georgia - 2.1%
Clayton County, GA, Development Authority, Special Facilities Rev. (Delta Airlines, Inc.), “A”, 8.75%, 6/01/2029   $ 238,009 $239,287
Cobb County, GA, Development Authority, Student Housing Rev. (Kennesaw State University Real Estate Foundations), “C”, 5%, 7/15/2030     60,000 66,380
Cobb County, GA, Development Authority, Student Housing Rev. (Kennesaw State University Real Estate Foundations), “C”, 5%, 7/15/2033     105,000 115,068
Cobb County, GA, Development Authority, Student Housing Rev. (Kennesaw State University Real Estate Foundations), “C”, 5%, 7/15/2038     110,000 119,554
Cobb County, GA, Kennestone Hospital Authority Rev. (WellStar Health System, Inc. Project), “B”, 4%, 4/01/2039     80,000 92,470
Cobb County, GA, Kennestone Hospital Authority Rev. (WellStar Health System, Inc. Project), “B”, 5%, 4/01/2040     5,000 6,242
Fulton County, GA, Development Authority Hospital Rev. (WellStar Health System, Inc. Project), “A”, 4%, 4/01/2050     230,000 259,399
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5.5%, 9/15/2028     430,000 552,163
Georgia Main Street Natural Gas, Inc., Gas Project Rev., “A”, 5%, 5/15/2043     135,000 159,899
Georgia Municipal Electric Authority (Plant Vogtle Units 3 & 4 Project), “A”, 5%, 1/01/2056     125,000 146,945
Georgia Municipal Electric Authority (Plant Vogtle Units 3 & 4 Project), “A”, 5%, 1/01/2063     120,000 140,701
Private Colleges & Universities, GA, Authority Rev. (Emory University), “B”, 4%, 9/01/2038     315,000 374,859
Private Colleges & Universities, GA, Authority Rev. (Emory University), “B”, 4%, 9/01/2039     255,000 302,616
Private Colleges & Universities, GA, Authority Rev. (Emory University), “B”, 4%, 9/01/2040     255,000 301,775
Private Colleges & Universities, GA, Authority Rev. (Emory University), “B”, 4%, 9/01/2041     510,000 601,372
        $3,478,730
Guam - 0.2%
Guam Waterworks Authority Rev. (Water and Wastewater System), “A”, 5%, 1/01/2050   $ 320,000 $384,710
Hawaii - 0.3%
Hawaii Department of Budget & Finance, Special Purpose Rev. (Chaminade University), 5%, 1/01/2030 (n)   $ 150,000 $155,163
Hawaii Department of Budget & Finance, Special Purpose Rev. (Chaminade University), 5%, 1/01/2045 (n)     125,000 126,239
Hawaii Harbor System Rev., “A”, 4%, 7/01/2036     60,000 69,783
State of Hawaii, “DZ”, 5%, 12/01/2031 (Prerefunded 12/01/2021)     95,000 98,454
        $449,639
Idaho - 0.3%
Idaho Health Facilities Authority Rev. (Madison Memorial Hospital Project), 5%, 9/01/2037   $ 50,000 $55,292
Idaho Health Facilities Authority Rev. (St. Luke's Health System Project), “A”, 4%, 3/01/2038     230,000 255,896
Idaho Housing and Finance Association Nonprofit Facilities Rev. (Compass Public Charter School, Inc. Project), “A”, 6%, 7/01/2049 (n)     100,000 116,881
        $428,069
Illinois - 18.7%
Bolingbrook, IL, Sales Tax Rev., 6.25%, 1/01/2024   $ 365,948 $348,942
Bridgeview, IL, Stadium and Redevelopment Projects, AAC, 5.14%, 12/01/2036     665,000 651,607
Chicago, IL, Board of Education, 5%, 12/01/2042     165,000 172,413
Chicago, IL, Board of Education (School Reform), “A”, NPFG, 5.25%, 12/01/2023     625,000 679,862
Chicago, IL, Board of Education (School Reform), Capital Appreciation, “B-1”, NPFG, 0%, 12/01/2028     315,000 267,038
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5%, 4/01/2037     100,000 114,963
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5%, 4/01/2046     105,000 118,708
Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 6%, 4/01/2046     1,225,000 1,460,874
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2025     160,000 191,571
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2026     65,000 80,044
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2027     155,000 195,199
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2028     75,000 96,209
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2029     50,000 65,145
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2030     35,000 46,411
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “A”, AAC, 5.5%, 12/01/2031     95,000 128,079
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2030     215,000 266,963
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2031     410,000 505,067
Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., “C”, AGM, 5%, 12/01/2032     350,000 427,949
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “A”, 7%, 12/01/2046 (n)     405,000 514,318
6

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Illinois - continued
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “A”, AGM, 5%, 12/01/2029   $ 140,000 $175,361
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “A”, AGM, 5%, 12/01/2035     135,000 162,963
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “G”, 5%, 12/01/2034     315,000 367,262
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “H”, 5%, 12/01/2036     475,000 550,976
Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., “H”, 5%, 12/01/2046     305,000 346,788
Chicago, IL, General Obligation, “A”, 5%, 1/01/2025     45,000 50,751
Chicago, IL, General Obligation, “A”, 5%, 1/01/2026     215,000 247,441
Chicago, IL, General Obligation, “A”, 5%, 1/01/2027     150,000 175,998
Chicago, IL, General Obligation, “A”, 5%, 1/01/2028     35,000 41,628
Chicago, IL, General Obligation, “A”, 5.25%, 1/01/2028     40,000 43,700
Chicago, IL, General Obligation, “A”, 5%, 1/01/2029     400,000 481,660
Chicago, IL, General Obligation, “A”, 5%, 1/01/2031     50,000 60,432
Chicago, IL, General Obligation, “A”, 5%, 1/01/2035     60,000 64,172
Chicago, IL, General Obligation, “A”, 5%, 1/01/2036     130,000 138,874
Chicago, IL, General Obligation, “A”, 5%, 1/01/2039     130,000 149,183
Chicago, IL, General Obligation, “A”, 5%, 1/01/2040     25,000 28,635
Chicago, IL, General Obligation, “A”, 5%, 1/01/2044     490,000 555,121
Chicago, IL, General Obligation, “A”, 5.5%, 1/01/2049     505,000 585,835
Chicago, IL, General Obligation, “D”, 5.5%, 1/01/2033     110,000 122,231
Chicago, IL, Greater Chicago Metropolitan Water Reclamation District, “C”, 5%, 12/01/2030     1,000,000 1,037,050
Chicago, IL, O’Hare International Airport Rev., Special Facilities, 5%, 7/01/2033     435,000 522,270
Chicago, IL, O’Hare International Airport Rev., Special Facilities, 5%, 7/01/2038     380,000 448,100
Chicago, IL, O’Hare International Airport Rev., Special Facilities, 5%, 7/01/2048     310,000 358,713
Chicago, IL, O'Hare International Airport Rev., Customer Facility Charge, AGM, 5.25%, 1/01/2032     95,000 102,664
Chicago, IL, O'Hare International Airport Rev., Customer Facility Charge, AGM, 5.25%, 1/01/2033     50,000 54,005
Chicago, IL, O'Hare International Airport Rev., Customer Facility Charge, AGM, 5.5%, 1/01/2043     190,000 205,825
Chicago, IL, O'Hare International Airport Rev., Senior Lien, “A”, 5%, 1/01/2048     255,000 299,615
Chicago, IL, O'Hare International Airport Rev., Senior Lien, “A”, 5%, 1/01/2053     140,000 163,923
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2029 (Prerefunded 12/01/2021)     215,000 223,217
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2030 (Prerefunded 12/01/2021)     430,000 446,435
Chicago, IL, Transit Authority Sales Tax Receipts Rev., 5.25%, 12/01/2031 (Prerefunded 12/01/2021)     80,000 83,058
Chicago, IL, Transit Authority Second Lien Sales Tax Rev., “A”, 5%, 12/01/2045     480,000 583,037
Cook County, IL, Community College District No. 508 (City Colleges), BAM, 5%, 12/01/2047     580,000 672,504
Cook County, IL, General Obligation Refunding, 5%, 11/15/2034     50,000 61,841
Cook County, IL, General Obligation Refunding, 5%, 11/15/2035     180,000 222,626
Cook County, IL, Sales Tax Rev., “A”, 4%, 11/15/2041     465,000 538,330
Du Page County, IL, Special Service Area No. 31 Special Tax (Monarch Landing Project), 5.625%, 3/01/2036     208,000 208,913
Illinois Finance Authority Rev. (Edward-Elmhurst Healthcare), “A”, 5%, 1/01/2034     165,000 194,519
Illinois Finance Authority Rev. (Edward-Elmhurst Healthcare), “A”, 5%, 1/01/2035     165,000 194,132
Illinois Finance Authority Rev. (Franciscan Communities), “A”, 4.75%, 5/15/2033 (Prerefunded 5/15/2023)     30,000 32,866
Illinois Finance Authority Rev. (Franciscan Communities), “A”, 4.75%, 5/15/2033     215,000 224,122
Illinois Finance Authority Rev. (Franciscan Communities), “A”, 5.125%, 5/15/2043 (Prerefunded 5/15/2023)     35,000 38,631
Illinois Finance Authority Rev. (Franciscan Communities), “A”, 5.125%, 5/15/2043     230,000 240,083
Illinois Finance Authority Rev. (Presence Health Network), “C”, 5%, 2/15/2036     195,000 232,988
Illinois Finance Authority Rev. (Presence Health Network), “C”, 4%, 2/15/2041 (Prerefunded 2/15/2027)     30,000 35,321
Illinois Finance Authority Rev. (Presence Health Network), “C”, 4%, 2/15/2041     630,000 701,121
Illinois Finance Authority Rev. (Presence Health Network), “C”, 5%, 2/15/2041     400,000 471,944
Illinois Finance Authority Rev. (Rehabilitation Institute of Chicago), “A”, 6%, 7/01/2043     255,000 277,417
Illinois Finance Authority Rev. (Rosalind Franklin University), “A”, 5%, 8/01/2042     45,000 51,045
Illinois Finance Authority Rev. (Rosalind Franklin University), “A”, 5%, 8/01/2047     90,000 101,540
Illinois Finance Authority Rev. (Rosalind Franklin University, Research Building Project), “C”, 5%, 8/01/2046     65,000 73,341
Illinois Finance Authority Rev. (Rosalind Franklin University, Research Building Project), “C”, 5%, 8/01/2049     70,000 78,920
Illinois Finance Authority Rev. (Silver Cross Hospital & Medical Centers), “C”, 5%, 8/15/2035     530,000 600,426
Illinois Finance Authority Rev. (Southern Illinois Healthcare Enterprises, Inc.), “C”, 5%, 3/01/2034     5,000 5,947
Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 4%, 10/01/2050     415,000 458,222
7

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Illinois - continued
Illinois Finance Authority, Student Housing and Academic Facility Rev. (CHF-Chicago LLC-University of Illinois at Chicago Project), “A”, 5%, 2/15/2037   $ 30,000 $33,002
Illinois Finance Authority, Student Housing and Academic Facility Rev. (CHF-Chicago LLC-University of Illinois at Chicago Project), “A”, 5%, 2/15/2047     60,000 65,519
Illinois Finance Authority, Student Housing and Academic Facility Rev. (CHF-Chicago LLC-University of Illinois at Chicago Project), “A”, 5%, 2/15/2050     25,000 27,254
Illinois Finance Authority, Student Housing Rev. (Northern Illinois University Project), 6.625%, 10/01/2031     785,000 798,219
Illinois Railsplitter Tobacco Settlement Authority Rev., 6%, 6/01/2028 (Prerefunded 6/01/2021)     1,710,000 1,734,709
Illinois Sales Tax Securitization Corp., “A”, 5%, 1/01/2030     5,000 6,074
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2026     100,000 118,098
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2027     220,000 265,885
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2028     195,000 240,256
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2029     40,000 50,094
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2030     100,000 127,037
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2036     90,000 111,147
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 5%, 1/01/2037     125,000 155,278
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 4%, 1/01/2038     55,000 62,497
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 4%, 1/01/2039     40,000 45,316
Illinois Sales Tax Securitization Corp., Second Lien, “A”, 4%, 1/01/2040     60,000 68,329
Illinois Sports Facilities Authority, State Tax Supported Refunding Rev., BAM, 5%, 6/15/2028     50,000 62,115
Illinois Sports Facilities Authority, State Tax Supported Refunding Rev., BAM, 5%, 6/15/2029     65,000 82,080
Illinois Sports Facilities Authority, State Tax Supported Refunding Rev., BAM, 5%, 6/15/2030     40,000 50,122
Lincolnshire, IL, Special Service Area No. 1 (Sedgebrook Project), 6.25%, 3/01/2034     319,000 319,188
Metropolitan Pier & Exposition Authority Refunding Bonds (McCormick Place Expansion Project), Capital Appreciation, “B”, BAM, 0%, 12/15/2054     970,000 326,890
Metropolitan Pier & Exposition Authority Refunding Bonds (McCormick Place Expansion Project), Capital Appreciation, “B-1”, AGM, 0%, 6/15/2047     1,650,000 727,270
Metropolitan Pier & Exposition Authority Refunding Rev. (McCormick Place Expansion Project), Capital Appreciation, “B-1”, AGM, 0%, 6/15/2026     195,000 181,034
Romeoville, IL, Rev. (Lewis University Project), “A”, 5%, 10/01/2042     165,000 178,113
Romeoville, IL, Rev. (Lewis University Project), “B”, 5%, 10/01/2039     90,000 97,584
Romeoville, IL, Rev. (Lewis University Project), “B”, 4.125%, 10/01/2041     70,000 72,645
Romeoville, IL, Rev. (Lewis University Project), “B”, 4.125%, 10/01/2046     70,000 72,260
State of Illinois, 4.125%, 11/01/2031     115,000 124,229
State of Illinois, 4.5%, 11/01/2039     160,000 172,546
State of Illinois, 5%, 11/01/2040     485,000 536,522
State of Illinois, AGM, 5%, 2/01/2027     145,000 159,209
State of Illinois, NPFG, 6%, 11/01/2026     405,000 490,244
State of Illinois, “A”, 5%, 11/01/2027     595,000 702,308
State of Illinois, “A”, 5%, 12/01/2024     35,000 39,240
State of Illinois, “A”, 5%, 12/01/2038     55,000 62,076
University of Illinois, Auxiliary Facilities System Rev., “A”, BAM, 4%, 4/01/2047     625,000 700,175
Upper Illinois River Valley Development Authority Rev. (Morris Hospital), 5%, 12/01/2043     460,000 542,437
Upper Illinois River Valley Development Authority Rev. (Morris Hospital), 5%, 12/01/2048     460,000 538,950
        $31,071,035
Indiana - 1.7%
Indiana Finance Authority Rev. (BHI Senior Living), “A”, 6%, 11/15/2041   $ 350,000 $380,181
Indiana Finance Authority Rev. (Marquette Project), “A”, 5%, 3/01/2030     50,000 55,188
Indiana Finance Authority Rev. (Marquette Project), “A”, 5%, 3/01/2039     125,000 135,628
Indiana Finance Authority Rev. (Ohio River Bridges East End Crossing Project), “A”, 5%, 7/01/2035     235,000 253,039
Indiana Finance Authority Rev. (Ohio River Bridges East End Crossing Project), “A”, 5%, 7/01/2040     590,000 632,256
Indiana Finance Authority, Educational Facilities Tax-Exempt Rev. (Marian University Project), 5%, 9/15/2039     85,000 99,472
Indiana Finance Authority, Educational Facilities Tax-Exempt Rev. (Marian University Project), 4%, 9/15/2044     20,000 21,313
Indiana Finance Authority, Educational Facilities Tax-Exempt Rev. (Marian University Project), 4%, 9/15/2049     25,000 26,510
Indiana Finance Authority, Health Facilities Rev. (Baptist Healthcare System Obligated Group), 5%, 8/15/2051     430,000 501,152
Knox County, IN, Economic Development Rev. (Good Samaritan Hospital), “A”, 5%, 4/01/2042     130,000 133,576
8

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Indiana - continued
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2032   $ 35,000 $42,528
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2033     25,000 30,270
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2035     35,000 42,153
Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2038     100,000 119,462
Valparaiso, IN, Exempt Facilities Rev. (Pratt Paper LLC Project), 6.75%, 1/01/2034     325,000 366,785
        $2,839,513
Iowa - 0.3%
Iowa Finance Authority Senior Housing Rev. (Northcrest, Inc. Project), “A”, 5%, 3/01/2033   $ 60,000 $64,269
Iowa Finance Authority Senior Housing Rev. (Northcrest, Inc. Project), “A”, 5%, 3/01/2038     45,000 47,934
Iowa Finance Authority Senior Housing Rev. (Northcrest, Inc. Project), “A”, 5%, 3/01/2048     85,000 89,843
Iowa Student Loan Liquidity Corp. Rev., “B”, 3.5%, 12/01/2044     310,000 310,291
        $512,337
Kansas - 1.4%
Coffeyville, KS, Electric Utility System Rev., “B”, NPFG, 5%, 6/01/2038 (Prerefunded 6/01/2025) (n)   $ 300,000 $350,592
Coffeyville, KS, Electric Utility System Rev., “B”, NPFG, 5%, 6/01/2042 (Prerefunded 6/01/2025) (n)     100,000 116,864
Hutchinson, KS, Hospital Facilities Rev. (Hutchinson Regional Medical Center, Inc.), 5%, 12/01/2036     50,000 55,046
Hutchinson, KS, Hospital Facilities Rev. (Hutchinson Regional Medical Center, Inc.), 5%, 12/01/2041     50,000 54,226
Lenexa, KS, Health Care Facility Rev. (Lakeview Village, Inc.), “A”, 5%, 5/15/2030     55,000 60,536
Lenexa, KS, Health Care Facility Rev. (Lakeview Village, Inc.), “A”, 5%, 5/15/2032     50,000 54,782
Lenexa, KS, Health Care Facility Rev. (Lakeview Village, Inc.), “A”, 5%, 5/15/2039     65,000 70,543
Wichita, KS, Health Care Facilities Rev. (Presbyterian Manors, Inc.), “A”, 6.375%, 5/15/2043     200,000 211,988
Wichita, KS, Health Care Facilities Rev. (Presbyterian Manors, Inc.), “I”, 5%, 5/15/2047     195,000 197,574
Wichita, KS, Sales Tax Special Obligations Rev. (K-96 Greenwich Star Bond Project), 4.2%, 9/01/2027     170,000 173,862
Wyandotte County/Kansas City, KS, Community College Auxiliary Enterprise System Rev., 4%, 9/01/2047     380,000 424,452
Wyandotte County/Kansas City, KS, Community College Auxiliary Enterprise System Rev., 4%, 9/01/2052     255,000 283,680
Wyandotte County/Kansas City, KS, Unified Government Community Improvement District Sales Tax Rev. (Legends Apartments Garage & West Lawn Project), 4.5%, 6/01/2040     70,000 71,849
Wyandotte County/Kansas City, KS, Unified Government Utility System Improvement Rev., “A”, 5%, 9/01/2044     255,000 284,134
        $2,410,128
Kentucky - 2.1%
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2032   $ 50,000 $62,152
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2033     45,000 55,833
Commonwealth of Kentucky State Property & Buildings Commission Rev. (Project No. 119), BAM, 5%, 5/01/2034     55,000 67,931
Kentucky Economic Development Finance Authority Healthcare Facilities Rev. (Baptist Life Communities Project), “A”, 6.25%, 11/15/2046     355,000 321,918
Kentucky Economic Development Finance Authority Healthcare Facilities Rev. (Baptist Life Communities Project), “A”, 6.375%, 11/15/2051     340,000 316,826
Kentucky Economic Development Finance Authority Healthcare Facilities Rev. (Masonic Homes of Kentucky, Inc.), 5.375%, 11/15/2042     225,000 226,379
Kentucky Economic Development Finance Authority Healthcare Facilities Rev. (Masonic Homes of Kentucky, Inc.), 5.5%, 11/15/2045     95,000 95,666
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2037     40,000 47,600
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2041     315,000 371,426
Kentucky Economic Development Finance Authority Hospital Rev. (Baptist Healthcare System), “B”, 5%, 8/15/2046     205,000 239,612
Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), “A”, 5%, 6/01/2037     160,000 175,019
Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), “A”, 5%, 6/01/2041     105,000 114,107
Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), “A”, 5.25%, 6/01/2041     80,000 88,622
Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), “A”, 5%, 6/01/2045     135,000 144,692
Kentucky Economic Development Finance Authority Rev. (Masonic Home Independent Living II, Inc. - Meadow Project and Grove Pointe Project), “A”, 5%, 5/15/2036     140,000 142,946
Kentucky Economic Development Finance Authority Rev. (Masonic Home Independent Living II, Inc. - Meadow Project and Grove Pointe Project), “A”, 5%, 5/15/2046     395,000 397,488
Kentucky Economic Development Finance Authority Rev. (Masonic Home Independent Living II, Inc. - Meadow Project and Grove Pointe Project), “A”, 5%, 5/15/2051     100,000 100,402
9

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Kentucky - continued
Kentucky Higher Education Student Loan Corp. Rev., Tax-Exempt, “B-1”, 5%, 6/01/2036   $ 465,000 $526,854
        $3,495,473
Louisiana - 4.4%
Jefferson Parish, LA, Hospital Service District No. 2 Hospital Rev. (East Jefferson General Hospital), 6.25%, 7/01/2031 (Prerefunded 7/01/2021)   $ 380,000 $387,592
Jefferson Parish, LA, Hospital Service District No. 2 Hospital Rev. (East Jefferson General Hospital), 6.375%, 7/01/2041 (Prerefunded 7/01/2021)     240,000 244,894
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Cameron Parish Gomesa Project), 5.65%, 11/01/2037 (n)     100,000 112,478
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (CDF Healthcare), “A”, 5.625%, 6/01/2045     745,000 775,850
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Jefferson Parish Gomesa Project), 4%, 11/01/2044 (n)     195,000 199,150
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Lafourche Parish Gomesa Project), 3.95%, 11/01/2043 (n)     185,000 188,395
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (St. James Parish Gomesa Project), 3.9%, 11/01/2044 (n)     225,000 228,134
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (St. James Place of Baton Rouge Project), “A”, 6%, 11/15/2035     105,000 114,666
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (St. James Place of Baton Rouge Project), “A”, 6.25%, 11/15/2045     420,000 456,179
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Tangipahoa Parish Gomesa Project), 5.375%, 11/01/2038 (n)     115,000 126,939
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Terrebonne Parish Gomesa Project), 5.5%, 11/01/2039 (n)     100,000 108,698
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Vermilion Parish Gomesa Project), 4.625%, 11/01/2038 (n)     100,000 106,669
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Westside Habilitation Center Project), “A”, 6.125%, 2/01/2037 (n)     240,000 263,566
Louisiana Local Government, Environmental Facilities & Community Development Authority Rev. (Westside Habilitation Center Project), “A”, 6.25%, 2/01/2047 (n)     185,000 201,639
Louisiana Local Government, Environmental Facilities & Community Development Authority Student Housing Rev. (Provident Group - ULM Properties LLC - University of Louisiana at Monroe Project), “A”, 5%, 7/01/2039 (n)     100,000 100,875
Louisiana Local Government, Environmental Facilities & Community Development Authority Student Housing Rev. (Provident Group - ULM Properties LLC - University of Louisiana at Monroe Project), “A”, 5%, 7/01/2054 (n)     150,000 147,007
Louisiana Military Department Custody Receipts, 5%, 8/01/2024     1,500,000 1,505,145
Louisiana Public Facilities Authority Rev. (Provident Group - HSC Properties, Inc., LSU Health Foundation and New Orleans Project), “A-1”, 5.1%, 1/01/2057 (n)     790,000 843,159
New Orleans, LA, Sewerage Services Rev., 5%, 12/01/2040     80,000 95,785
New Orleans, LA, Sewerage Services Rev., 5%, 6/01/2045     220,000 259,112
New Orleans, LA, Sewerage Services Rev., 5%, 12/01/2045     95,000 113,744
St. Charles Parish, LA, Gulf Zone Opportunity Zone Rev. (Valero Energy Corp.), 4%, 12/01/2040 (Put Date 6/01/2022)     760,000 792,840
        $7,372,516
Maine - 0.6%
Maine Finance Authority Solid Waste Disposal Rev. (Casella Waste Systems, Inc.), “R-2”, 4.375%, 8/01/2035 (Put Date 8/01/2025) (n)   $ 160,000 $175,762
Maine Finance Authority Solid Waste Disposal Rev. (Casella Waste Systems, Inc.), “R-3”, 5.25%, 1/01/2025 (n)     365,000 408,095
Maine Health and Higher Educational Facilities Authority Rev. (MaineHealth), “A”, 4%, 7/01/2050     375,000 424,065
        $1,007,922
Maryland - 1.0%
Howard County, MD, Special Obligation (Downtown Columbia Project), “A”, 4.5%, 2/15/2047 (n)   $ 145,000 $150,471
Maryland Economic Development Corp., Special Obligation (Port Covington Project), 4%, 9/01/2050     105,000 112,010
Maryland Economic Development Corp., Student Housing Rev. (Morgan State University Project), 5%, 7/01/2056     120,000 140,252
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2038     10,000 9,439
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2048     30,000 26,621
Maryland Economic Development Corp., Subordinate Parking Facilities Rev. (Baltimore City Project), “C”, 4%, 6/01/2058     110,000 94,118
10

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Maryland - continued
Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare Issue), “A”, 5.5%, 1/01/2036   $ 190,000 $224,540
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2033     115,000 132,174
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2034     70,000 80,146
Maryland Health & Higher Educational Facilities Authority Rev. (Doctors Community Hospital), “A”, 5%, 7/01/2038     315,000 355,594
Prince George's County, MD, Special Obligation (Westphalia Town Center Project), 5.25%, 7/01/2048 (n)     100,000 109,083
Rockville, MD, Mayor & Council Economic Development Refunding Rev. (Ingleside at King Farm Project), “A-1”, 5%, 11/01/2037     45,000 47,285
Rockville, MD, Mayor & Council Economic Development Rev. (Ingleside at King Farm Project), “B”, 5%, 11/01/2042     85,000 88,311
Rockville, MD, Mayor & Council Economic Development Rev. (Ingleside at King Farm Project), “B”, 5%, 11/01/2047     90,000 92,927
        $1,662,971
Massachusetts - 6.1%
Boston, MA, Metropolitan Transit Parking Corp., Systemwide Parking Rev., 5.25%, 7/01/2036   $ 370,000 $375,036
Massachusetts Development Finance Agency Rev. (Adventcare), “A”, 6.75%, 10/15/2037 (a)(d)     895,000 402,750
Massachusetts Development Finance Agency Rev. (Atrius Health Issue), “A”, 5%, 6/01/2039     65,000 78,060
Massachusetts Development Finance Agency Rev. (Atrius Health Issue), “A”, 4%, 6/01/2049     60,000 65,306
Massachusetts Development Finance Agency Rev. (Beth Israel Health, Inc.), “2018 I-2”, 5%, 7/01/2053     1,210,000 1,414,889
Massachusetts Development Finance Agency Rev. (Broad Institute, Inc.), “A”, 5.25%, 4/01/2037 (Prerefunded 4/01/2021)     710,000 712,925
Massachusetts Development Finance Agency Rev. (Linden Ponds, Inc.), Capital Appreciation, “B”, 0%, 11/15/2056     56,165 9,446
Massachusetts Development Finance Agency Rev. (Newbridge on the Charles, Inc.), 5%, 10/01/2047 (n)     100,000 109,388
Massachusetts Development Finance Agency Rev. (Newbridge on the Charles, Inc.), 5%, 10/01/2057 (n)     255,000 278,939
Massachusetts Development Finance Agency Rev. (North Hill Communities), “A”, 6.25%, 11/15/2033 (Prerefunded 11/15/2023) (n)     100,000 116,033
Massachusetts Development Finance Agency Rev. (Southcoast Health System Obligated Group), “G”, 4%, 7/01/2046     255,000 291,162
Massachusetts Development Finance Agency Rev. (Southcoast Health System Obligated Group), “G”, 5%, 7/01/2050     715,000 887,551
Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2033     40,000 47,390
Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2034     50,000 59,010
Massachusetts Development Finance Agency Rev. (UMass Memorial Health Care Obligated Group), “I”, 5%, 7/01/2036     145,000 167,131
Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), “A”, 4%, 7/01/2044     3,080,000 3,400,012
Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), “A”, 5%, 7/01/2044     65,000 77,106
Massachusetts Educational Financing Authority, Education Loan Rev., “C”, 2.625%, 7/01/2036     75,000 75,200
Massachusetts Educational Financing Authority, Education Loan Rev., “C”, 4.125%, 7/01/2046     405,000 420,467
Massachusetts Educational Financing Authority, Education Loan Rev., “J”, 3.5%, 7/01/2033     555,000 564,790
Massachusetts Port Authority Special Facilities Rev. (ConRAC Project), “A”, 5.125%, 7/01/2041 (Prerefunded 7/01/2021)     50,000 50,808
Massachusetts School Building Authority, Dedicated Sales Tax Rev., “B”, 5%, 10/15/2032 (Prerefunded 10/15/2021)     490,000 504,769
        $10,108,168
Michigan - 3.9%
Detroit, MI, Downtown Development Authority Tax Increment Rev. (Catalyst Development), “A”, AGM, 5%, 7/01/2043   $ 120,000 $135,268
Detroit, MI, Water & Sewerage Department, Senior Lien Sewage Disposal System Rev., “A”, 5.25%, 7/01/2039 (Prerefunded 7/01/2022)     730,000 779,567
Detroit, MI, Water Supply System Rev., Senior Lien, “A”, 5%, 7/01/2036 (Prerefunded 7/01/2021)     35,000 35,563
Detroit, MI, Water Supply System Rev., Senior Lien, “C”, 5%, 7/01/2041 (Prerefunded 7/01/2021)     50,000 50,805
Eastern Michigan University Board of Regents, General Rev., “A”, 4%, 3/01/2047     330,000 360,710
Michigan Finance Authority Hospital Rev. (Ascension Health Senior Credit Group), “F-4”, 5%, 11/15/2047     1,025,000 1,266,480
Michigan Finance Authority Hospital Rev. (Trinity Health Credit Group), 5%, 12/01/2035 (Prerefunded 12/01/2021)     1,250,000 1,295,450
Michigan Finance Authority Hospital Rev. (Trinity Health Credit Group), 5%, 12/01/2048     280,000 338,114
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2033     80,000 93,757
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2034     180,000 210,620
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), “C”, 5%, 7/01/2035     115,000 134,349
Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Water Supply System Rev. Refunding Local Project), “D-2”, 5%, 7/01/2034     75,000 87,758
Waterford Township, MI, Economic Development Corp. (Canterbury Health Care, Inc.), “A”, 5%, 7/01/2046 (n)     135,000 125,474
Waterford Township, MI, Economic Development Corp. (Canterbury Health Care, Inc.), “A”, 5%, 7/01/2051 (n)     135,000 123,784
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “B”, 5%, 12/01/2044     45,000 51,047
11

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Michigan - continued
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “B”, BAM, 5%, 12/01/2039   $ 50,000 $57,093
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “C”, 5%, 12/01/2039     40,000 45,360
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “C”, 5%, 12/01/2044     110,000 123,920
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “D”, 5%, 12/01/2031     190,000 233,284
Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), “D”, 5%, 12/01/2032     200,000 243,738
Wayne County, MI, Detroit School District, ”A“, 5%, 5/01/2038     180,000 227,594
Wayne County, MI, Detroit School District, ”A“, 5%, 5/01/2040     335,000 421,356
        $6,441,091
Minnesota - 0.5%
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 4.25%, 2/15/2043   $ 110,000 $122,728
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 5%, 2/15/2043     200,000 236,048
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 4.25%, 2/15/2048     110,000 121,891
Duluth, MN, Economic Development Authority, Health Care Facilities Rev. (Essentia Health), “A”, 5%, 2/15/2048     155,000 181,707
Minneapolis & St. Paul, MN, Housing Authority Rev. (City Living), “A-2”, GNMA, 5%, 12/01/2038     679 679
St. Paul, MN, Housing & Redevelopment Authority Charter School Lease Rev. (Great River School Project), “A”, 5.5%, 7/01/2052 (n)     100,000 110,367
        $773,420
Mississippi - 1.0%
Mississippi Development Bank Special Obligation (Hancock County Gomesa Project), 4.55%, 11/01/2039 (n)   $ 200,000 $210,972
Mississippi Hospital Equipment & Facilities Authority Rev. (Baptist Memorial Healthcare), “A”, 5%, 9/01/2022     175,000 185,215
Mississippi Hospital Equipment & Facilities Authority Rev. (Baptist Memorial Healthcare), “A”, 5%, 9/01/2023     455,000 502,880
Mississippi Hospital Equipment & Facilities Authority Rev. (Baptist Memorial Healthcare), “A”, 5%, 9/01/2046     135,000 152,076
Mississippi State University, Educational Building Corp. Rev. (Residence Hall Construction and Refunding Project), 5%, 8/01/2036 (Prerefunded 8/01/2021)     560,000 571,278
        $1,622,421
Missouri - 2.7%
Kansas City, MO, Industrial Development Authority, Airport Rev. (Kansas City International Airport Terminal Modernization Project), “B”, AGM, 5%, 3/01/2049   $ 655,000 $782,037
Kansas City, MO, Industrial Development Authority, Airport Rev. (Kansas City International Airport Terminal Modernization Project), “B”, AGM, 5%, 3/01/2055     395,000 469,406
Kansas City, MO, Industrial Development Authority, Airport Rev. (Kansas City International Airport Terminal Modernization Project), “B”, 5%, 3/01/2046     870,000 1,025,199
Kansas City, MO, Land Clearance for Redevelopment Authority Rev. (Convention Center Hotel Project - TIF Financing), “B”, 5%, 2/01/2040 (n)     100,000 105,985
Kansas City, MO, Land Clearance for Redevelopment Authority Rev. (Convention Center Hotel Project - TIF Financing), “B”, 5%, 2/01/2050 (n)     280,000 295,028
St. Louis County, MO, Industrial Development Authority Health Facilities Rev. (Nazareth Living Center), “A”, 5%, 8/15/2030     45,000 46,484
St. Louis County, MO, Industrial Development Authority Health Facilities Rev. (Nazareth Living Center), “A”, 5%, 8/15/2035     35,000 35,897
St. Louis County, MO, Industrial Development Authority Health Facilities Rev. (Nazareth Living Center), “A”, 5.125%, 8/15/2045     80,000 81,543
St. Louis, MO, Industrial Development Authority Financing Rev. (Ballpark Village Development Project), “A”, 3.875%, 11/15/2029     60,000 57,909
St. Louis, MO, Industrial Development Authority Financing Rev. (Ballpark Village Development Project), “A”, 4.375%, 11/15/2035     125,000 117,921
St. Louis, MO, Industrial Development Authority Financing Rev. (Ballpark Village Development Project), “A”, 4.75%, 11/15/2047     255,000 241,840
St. Louis, MO, Industrial Development Authority Rev. (Friendship Village St. Louis Obligated Group), “A”, 5.25%, 9/01/2053     555,000 614,507
St. Louis, MO, Industrial Development Authority Rev. (St. Andrew's Resources for Seniors Obligated Group), “A”, 5.125%, 12/01/2045     230,000 236,760
St. Louis, MO, Municipal Finance Corp. Leasehold Rev. (Convention Center Expansion and Improvement Projects), AGM, 5%, 10/01/2045     335,000 412,164
        $4,522,680
Montana - 0.0%
Montana Board of Housing Single Family Program (Federally Insured or Guaranteed Mortgage Loans), “A”, 4%, 6/01/2049   $ 45,000 $48,902
Nebraska - 0.1%
Central Plains Energy Project, NE, Gas Project Rev. (Project No. 3), “A”, 5%, 9/01/2036   $ 135,000 $183,611
12

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Nevada - 1.1%
Clark County, NV, School District General Obligation, “A”, AGM, 4%, 6/15/2040   $ 160,000 $184,450
Director of the State of Nevada, Department of Business and Industry, Charter School Lease Rev. (Somerset Academy), “A”, 5.125%, 12/15/2045 (n)     195,000 205,239
Director of the State of Nevada, Department of Business and Industry, Charter School Lease Rev. (Somerset Academy), “A”, 5%, 12/15/2048 (n)     115,000 120,264
Las Vegas Valley, NV, Water District, “C”, 5%, 6/01/2029     1,175,000 1,188,395
Nevada Department of Business & Industry Charter School Rev. (Doral Academy of Nevada), “A”, 5%, 7/15/2047 (n)     110,000 118,150
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 5%, 6/01/2033     5,000 5,924
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 5%, 6/01/2038     5,000 5,836
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 4%, 6/01/2048     25,000 26,720
Reno, NV, Sales Tax Rev. (Retrac-Reno Transportation Rail Access Corridor Project), “B”, AGM, 4.125%, 6/01/2058     35,000 37,509
        $1,892,487
New Hampshire - 0.8%
National Finance Authority, New Hampshire Municipal Certificates “A”, 4.125%, 1/20/2034   $ 492,726 $552,779
National Finance Authority, New Hampshire Resource Recovery Refunding Rev. (Covanta Project), “C”, 4.875%, 11/01/2042 (n)     375,000 393,465
New Hampshire Health & Education Facilities Authority Rev. (Memorial Hospital), 5.5%, 6/01/2031     150,000 175,807
New Hampshire Health & Education Facilities Authority Rev. (Memorial Hospital), 5.5%, 6/01/2036     150,000 173,634
New Hampshire National Finance Authority, Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2051     110,000 119,753
        $1,415,438
New Jersey - 4.8%
Atlantic City, NJ, Tax Appeal Refunding Bonds (Qualified Pursuant to the Provisions of the Municipal Qualified Bond Act), “A”, BAM, 5%, 3/01/2037   $ 30,000 $34,965
Atlantic City, NJ, Tax Appeal Refunding Bonds (Qualified Pursuant to the Provisions of the Municipal Qualified Bond Act), “A”, BAM, 5%, 3/01/2042     35,000 40,369
New Jersey Building Authority Rev., Unrefunded Balance, “A”, BAM, 5%, 6/15/2029     35,000 41,352
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5.5%, 1/01/2027     55,000 61,849
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5%, 1/01/2028     55,000 60,945
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), 5.375%, 1/01/2043     315,000 346,853
New Jersey Economic Development Authority Rev. (Goethals Bridge Replacement Project), AGM, 5%, 1/01/2031     160,000 179,152
New Jersey Economic Development Authority Rev. (Kapkowski Road Landfill Project), 6.5%, 4/01/2031     1,100,000 1,166,935
New Jersey Economic Development Authority Rev. (Lions Gate Project), 5%, 1/01/2034     40,000 40,662
New Jersey Economic Development Authority Rev. (Provident Group - Rowan Properties LLC - Rowan University Student Housing Project), “A”, 5%, 1/01/2030     100,000 104,199
New Jersey Economic Development Authority Rev. (Provident Group - Rowan Properties LLC - Rowan University Student Housing Project), “A”, 5%, 1/01/2035     125,000 129,302
New Jersey Economic Development Authority Rev. (School Facilities Construction), 5%, 6/15/2032     15,000 18,799
New Jersey Economic Development Authority Rev. (School Facilities Construction), 5%, 6/15/2033     10,000 12,450
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2034     10,000 11,359
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2035     35,000 39,561
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2036     30,000 33,715
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2037     25,000 27,941
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2038     40,000 44,508
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2039     30,000 33,281
New Jersey Economic Development Authority Rev. (School Facilities Construction), 4%, 6/15/2040     40,000 44,220
New Jersey Economic Development Authority, Special Facilities Rev. (Continental Airlines, Inc.), “A”, 5.625%, 11/15/2030     335,000 374,145
New Jersey Economic Development Authority, State Lease Rev. (Juvenile Justice Commission Facilities Project), “C”, 5%, 6/15/2042     235,000 271,839
New Jersey Economic Development Motor Vehicle Surcharges Subordinate Refunding Rev., “A”, 3.125%, 7/01/2029     50,000 50,420
New Jersey Economic Development Motor Vehicle Surcharges Subordinate Refunding Rev., “A”, 5%, 7/01/2033     335,000 388,516
New Jersey Health Care Facilities, Financing Authority Rev. (University Hospital), “A”, AGM, 5%, 7/01/2046     500,000 560,335
New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., ”B“, 3.5%, 12/01/2039     405,000 416,267
New Jersey Transportation Trust Fund Authority, “AA”, 5%, 6/15/2045     145,000 172,915
New Jersey Transportation Trust Fund Authority, Federal Highway Reimbursement Rev., “A”, 5%, 6/15/2029     200,000 234,654
New Jersey Transportation Trust Fund Authority, Federal Highway Reimbursement Rev., “A”, 5%, 6/15/2031     135,000 156,765
New Jersey Transportation Trust Fund Authority, Transportation Program, “AA”, 5%, 6/15/2038     1,000,000 1,095,890
13

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
New Jersey - continued
New Jersey Turnpike Authority, Turnpike Rev., “A”, 4%, 1/01/2051   $ 210,000 $240,517
State of New Jersey, COVID-19 General Obligation, “A”, 4%, 6/01/2031     1,320,000 1,582,891
        $8,017,571
New Mexico - 0.0%
Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 4%, 9/01/2040   $ 25,000 $27,858
New York - 8.4%
Buffalo & Erie County, NY, Industrial Land Development Corp. Rev. (Buffalo State College), “A”, 5.375%, 10/01/2041 (Prerefunded 4/01/2021)   $ 250,000 $251,057
Build NYC Resource Corp. Rev. (Albert Einstein School of Medicine, Inc.), 5.5%, 9/01/2045 (n)     525,000 580,298
Hudson Yards, NY, Infrastructure Corp. Rev., “A”, Unrefunded Balance, 5.75%, 2/15/2047     175,000 175,697
Metropolitan Transportation Authority, NY, Transportation Rev., “A”, 4%, 11/15/2052     95,000 103,065
Metropolitan Transportation Authority, NY, Transportation Rev., “C-1”, 5.25%, 11/15/2055     215,000 257,849
Monroe County, NY, Industrial Development Corp. Rev. (University of Rochester Project), “A”, 4%, 7/01/2050     220,000 248,393
New Rochelle, NY, Corp. for Local Development Rev. (Iona College Project), “A”, 5%, 7/01/2034     85,000 94,040
New Rochelle, NY, Corp. for Local Development Rev. (Iona College Project), “A”, 5%, 7/01/2040     205,000 224,446
New Rochelle, NY, Corp. for Local Development Rev. (Iona College Project), “A”, 5%, 7/01/2045     105,000 114,165
New York Dormitory Authority Rev., Non-State Supported Debt (Orange Regional Medical Center Obligated Group Rev.), 5%, 12/01/2035 (n)     100,000 114,436
New York Dormitory Authority Rev., Non-State Supported Debt (Orange Regional Medical Center Obligated Group Rev.), 5%, 12/01/2040 (n)     100,000 110,984
New York Dormitory Authority, State Personal Income Tax Rev., “C”, 5%, 3/15/2034     1,330,000 1,334,562
New York Environmental Facilities Corp., Clean Drinking Water Revolving Funds, 5%, 6/15/2041     865,000 876,461
New York Environmental Facilities Corp., State Revolving Funds Rev., “C”, 5%, 5/15/2041     1,195,000 1,206,269
New York Liberty Development Corp., Liberty Rev. (3 World Trade Center Project), “1”, 5%, 11/15/2044 (n)     625,000 679,219
New York Transportation Development Corp., Special Facilities Rev. (American Airlines, Inc. John F. Kennedy International Airport Project), 5%, 8/01/2026     435,000 442,552
New York Transportation Development Corp., Special Facilities Rev. (American Airlines, Inc. John F. Kennedy International Airport Project), 5%, 8/01/2031     260,000 264,282
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2031     455,000 542,387
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2032     135,000 160,279
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 4%, 1/01/2036     100,000 109,920
New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 4.375%, 10/01/2045     685,000 783,140
New York Transportation Development Corp., Special Facilities Rev. (Terminal 4 John F. Kennedy International Airport Project), “C”, 5%, 12/01/2038     365,000 448,355
New York Transportation Development Corp., Special Facilities Rev. (Terminal 4, John F. Kennedy International Airport Project), 4%, 12/01/2038     90,000 101,256
New York, NY, City Housing Development Corp., Multi-Family Housing Rev. (8 Spruce Street), “E”, 3.5%, 2/15/2048     100,470 102,836
New York, NY, City Transitional Finance Authority Rev., “C-1”, 4%, 5/01/2037     245,000 283,904
New York, NY, City Transitional Finance Authority Rev., “C-1”, 4%, 5/01/2038     305,000 351,702
New York, NY, Industrial Development Agency Pilot Refunding Rev., (Yankee Stadium Project), “A”, AGM, 4%, 3/01/2045     40,000 45,489
New York, NY, Municipal Water Finance Authority, Water & Sewer System Rev., “GG-1”, 4%, 6/15/2050     635,000 727,405
New York, NY, Trust for Cultural Resources (Lincoln Center For The Performing Arts, Inc.), “A”, 4%, 12/01/2035     125,000 147,040
Niagara County, NY, Industrial Development Agency, Solid Waste Disposal Rev. (Covanta Energy Project), “A”, 4.75%, 11/01/2042 (n)     335,000 350,554
Orange County, NY, Funding Corp. Assisted Living Residence Rev. (Hamlet at Wallkill Assisted Living Project), 6.5%, 1/01/2046     225,000 226,436
Port Authority of NY & NJ (221st Series), 4%, 7/15/2055     835,000 921,314
Syracuse, NY, Industrial Development Agency PILOT Rev. (Carousel Center Project), “A”, 5%, 1/01/2029     40,000 41,703
Syracuse, NY, Industrial Development Agency PILOT Rev. (Carousel Center Project), “A”, 5%, 1/01/2032     90,000 92,795
Syracuse, NY, Industrial Development Agency PILOT Rev. (Carousel Center Project), “A”, 5%, 1/01/2034     250,000 256,340
Syracuse, NY, Industrial Development Agency PILOT Rev. (Carousel Center Project), “A”, 5%, 1/01/2036     135,000 137,834
Tobacco Settlement Asset Securitization Corp., NY, “A”, 5%, 6/01/2034     70,000 84,325
Tobacco Settlement Asset Securitization Corp., NY, “A”, 5%, 6/01/2035     35,000 42,027
14

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
New York - continued
Tobacco Settlement Asset Securitization Corp., NY, “A”, 5%, 6/01/2041   $ 230,000 $265,358
Ulster County, NY, Capital Resource Corp. Rev. (Woodland Pond at New Paltz Project), 4%, 9/15/2025     190,000 184,999
Ulster County, NY, Capital Resource Corp. Rev. (Woodland Pond at New Paltz Project), 5%, 9/15/2037     500,000 487,905
        $13,973,078
North Carolina - 1.4%
Durham, NC, Durham Housing Authority Rev. (Magnolia Pointe Apartments), 5.65%, 2/01/2038 (Prerefunded 1/31/2023)   $ 1,239,270 $1,355,960
North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Pennybyrn at Maryfield), 5%, 10/01/2025     70,000 74,546
North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Pennybyrn at Maryfield), 5%, 10/01/2030     85,000 90,848
North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Pennybyrn at Maryfield), 5%, 10/01/2035     55,000 58,189
North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Presbyterian Homes Obligated Group), “A”, 5%, 10/01/2050     115,000 135,969
North Carolina Medical Care Commission, Retirement Facilities First Mortgage Rev. (United Church Homes and Services), “A”, 5%, 9/01/2037     95,000 97,821
North Carolina Turnpike Authority, Monroe Expressway Toll Rev., “A”, 5%, 7/01/2042     40,000 45,170
North Carolina Turnpike Authority, Monroe Expressway Toll Rev., “A”, 5%, 7/01/2047     80,000 89,745
North Carolina Turnpike Authority, Monroe Expressway Toll Rev., “A”, 5%, 7/01/2051     165,000 184,754
North Carolina Turnpike Authority, Monroe Expressway Toll Rev., “A”, 5%, 7/01/2054     70,000 78,270
University of North Carolina, Greensboro, Rev., 5%, 4/01/2039     135,000 148,037
        $2,359,309
North Dakota - 0.1%
Ward County, ND, Health Care Facilities Rev. (Trinity Obligated Group), “C”, 5%, 6/01/2034   $ 45,000 $51,274
Ward County, ND, Health Care Facilities Rev. (Trinity Obligated Group), “C”, 5%, 6/01/2048     10,000 11,069
Ward County, ND, Health Care Facilities Rev. (Trinity Obligated Group), “C”, 5%, 6/01/2053     95,000 104,814
        $167,157
Ohio - 4.7%
Buckeye, OH, Tobacco Settlement Financing Authority Senior Asset-Backed Refunding, 2020A-2, “1”, 5%, 6/01/2036   $ 175,000 $218,486
Buckeye, OH, Tobacco Settlement Financing Authority Senior Asset-Backed Refunding, 2020A-2, “1”, 4%, 6/01/2048     345,000 385,365
Buckeye, OH, Tobacco Settlement Financing Authority Senior Asset-Backed Refunding, 2020B-2, “2”, 5%, 6/01/2055     1,490,000 1,676,474
Buckeye, OH, Tobacco Settlement Financing Authority Senior Asset-Backed Refunding, 2020B-3, Capital Appreciation, “2”, 0%, 6/01/2057     3,345,000 501,081
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5%, 2/15/2042     265,000 298,780
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 4.75%, 2/15/2047     360,000 395,150
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5.25%, 2/15/2047     85,000 97,603
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5%, 2/15/2057     190,000 211,698
Cuyahoga County, OH, Hospital Rev. (Metrohealth System), 5.5%, 2/15/2057     980,000 1,134,183
Darke County, OH, Hospital Facilities Rev. (Wayne Healthcare Project), “A”, 4%, 9/01/2040     45,000 46,368
Darke County, OH, Hospital Facilities Rev. (Wayne Healthcare Project), “A”, 4%, 9/01/2045     60,000 61,017
Darke County, OH, Hospital Facilities Rev. (Wayne Healthcare Project), “A”, 5%, 9/01/2049     80,000 88,226
Franklin County, OH, Hospital Facilities Rev. (OhioHealth Corp.), “A”, 4%, 5/15/2047     295,000 325,002
Gallia County, OH, Hospital Facilities Rev. (Holzer Health Systems), “A”, 8%, 7/01/2042     905,000 990,106
Lake County, OH, Hospital Facilities Rev., Unrefunded Balance, “C”, 5.625%, 8/15/2029     90,000 90,277
Lucas County, OH, Hospital Rev. (Promedica Healthcare), “A”, 5.25%, 11/15/2048     90,000 102,609
Miami County, OH, Hospital Facilities Rev. (Kettering Health), “A”, 5%, 8/01/2049     390,000 465,960
Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), “A”, 4%, 8/01/2041     160,000 173,536
Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), “A”, 4%, 8/01/2047     90,000 100,527
Montgomery County, OH, Hospital Facilities Improvement and Refunding Rev. (Kettering Health Network Obligated Group Project), 4%, 8/01/2041     15,000 17,217
Ohio Air Quality Development Authority, Facilities Rev. (Pratt Paper LLC Project), 3.75%, 1/15/2028 (n)     100,000 110,311
Ohio Air Quality Development Authority, Facilities Rev. (Pratt Paper LLC Project), 4.25%, 1/15/2038 (n)     125,000 138,061
Ohio Air Quality Development Authority, Facilities Rev. (Pratt Paper LLC Project), 4.5%, 1/15/2048 (n)     170,000 188,727
        $7,816,764
15

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Oklahoma - 0.9%
Catoosa, OK, Industrial Authority Sales Tax Rev., 4%, 10/01/2028   $ 25,000 $25,227
Norman, OK, Regional Hospital Authority Rev., 5%, 9/01/2045     50,000 59,495
Oklahoma Development Finance Authority, First Mortgage Rev. (Sommerset Project), 5%, 7/01/2042     135,000 146,455
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2029     40,000 48,294
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2033     190,000 225,144
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5%, 8/15/2038     265,000 309,570
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5.25%, 8/15/2043     240,000 279,886
Oklahoma Development Finance Authority, Health System Rev. (OU Medicine Project), “B”, 5.25%, 8/15/2048     265,000 307,037
Tulsa, OK, Airport Improvement Trust Rev., “A”, 5%, 6/01/2045     70,000 77,835
        $1,478,943
Oregon - 0.6%
Forest Grove, OR, Campus Improvement Rev. (Pacific University Project), “A”, 4.5%, 5/01/2029   $ 105,000 $107,960
Forest Grove, OR, Campus Improvement Rev. (Pacific University Project), “A”, 5%, 5/01/2036     120,000 131,190
Forest Grove, OR, Campus Improvement Rev. (Pacific University Project), “A”, 5%, 5/01/2040     135,000 138,626
Medford, OR, Hospital Facility Authority Rev. (Asante Projects), “A”, 4%, 8/15/2050     465,000 523,190
Oregon Facilities Authority Rev. (Samaritan Health Services Project), “A”, 5%, 10/01/2040     40,000 49,296
        $950,262
Pennsylvania - 12.6%
Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Rev. (City Center Project), 5%, 5/01/2042 (n)   $ 205,000 $236,962
Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Rev. (City Center Refunding Project), 5%, 5/01/2042 (n)     185,000 209,568
Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Rev., “A”, 5%, 5/01/2035     125,000 129,981
Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Rev., “A”, 5%, 5/01/2042     535,000 554,388
Berks County, PA, Industrial Development Authority Health System Rev. (Tower Health Project), 5%, 11/01/2034     300,000 335,205
Berks County, PA, Reading School District, AGM, 5%, 3/01/2036     35,000 41,996
Berks County, PA, Reading School District, BAM, 4%, 4/01/2044     60,000 67,861
Blythe Township, PA, Solid Waste Authority Rev., 7.75%, 12/01/2037     315,000 359,604
Bucks County, PA, Industrial Development Authority, Hospital Rev. (St. Luke's University Health Network Project), 4%, 8/15/2044     60,000 66,152
Bucks County, PA, Industrial Development Authority, Hospital Rev. (St. Luke's University Health Network Project), 4%, 8/15/2050     285,000 312,380
Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 5%, 12/01/2051     120,000 121,994
Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), “A”, 5%, 12/01/2030     50,000 52,360
Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), “A”, 5.25%, 12/01/2045     120,000 123,181
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2032     85,000 104,538
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2033     75,000 91,781
Commonwealth of Pennsylvania, Tobacco Master Settlement Financing Authority Rev., 5%, 6/01/2034     35,000 42,667
Doylestown, PA, Hospital Rev., “A”, 4%, 7/01/2045     35,000 36,196
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2030     35,000 36,082
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2035     40,000 41,077
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2039     50,000 50,933
East Hempfield Township, PA, Industrial Development Authority Rev. (Student Services, Inc., Student Housing Project at Millersville University of Pennsylvania), 5%, 7/01/2046     25,000 25,428
Franklin County, PA, Industrial Development Authority Rev. (Menno-Haven, Inc. Project), 5%, 12/01/2038     150,000 161,985
Franklin County, PA, Industrial Development Authority Rev. (Menno-Haven, Inc. Project), 5%, 12/01/2043     195,000 208,272
Franklin County, PA, Industrial Development Authority Rev. (Menno-Haven, Inc. Project), 5%, 12/01/2048     200,000 211,696
Franklin County, PA, Industrial Development Authority Rev. (Menno-Haven, Inc. Project), 5%, 12/01/2053     195,000 205,737
Geisinger, PA, Geisinger Authority Health System Rev., “A”, 4%, 4/01/2050     1,270,000 1,434,541
Lehigh County, PA, Hospital Authority Rev. (Lehigh Valley Health Network), “A”, 4%, 7/01/2049     420,000 467,670
Lehigh County, PA, Water & Sewer Authority Rev. (Allentown Concession), Capital Appreciation, “B”, 0%, 12/01/2037     1,200,000 752,892
Lehigh County, PA, Water & Sewer Authority Rev., “A”, 5%, 12/01/2043 (Prerefunded 12/01/2023)     765,000 861,941
Lehigh County, PA, Water & Sewer Authority Rev., “A”, 5%, 12/01/2043     660,000 731,214
Luzerne County, PA, Wilkes-Barre Area School District, General Obligation, BAM, 5%, 4/15/2059     65,000 78,050
Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), 4%, 9/01/2044     130,000 144,992
16

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Pennsylvania - continued
Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), 4%, 9/01/2049   $ 120,000 $132,971
Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), “A”, 5%, 9/01/2048     415,000 488,600
Montgomery County, PA, Industrial Development Authority Retirement Communities Rev. (Acts Retirement-Life Communities, Inc. Obligated Group), 5%, 11/15/2028 (Prerefunded 5/15/2022)     440,000 465,687
Montgomery County, PA, Industrial Development Authority Retirement Communities Rev. (Acts Retirement-Life Communities, Inc. Obligated Group), “C”, 5%, 11/15/2045     145,000 172,817
Montgomery County, PA, Industrial Development Authority Rev. (Whitemarsh Continuing Care Retirement Community Project), 5.375%, 1/01/2050     1,180,000 1,231,483
Moon Industrial Development Authority Rev. (Baptist Homes Society), 6.125%, 7/01/2050     325,000 344,367
Pennsylvania Economic Development Financing Authority Private Activity Rev. (Pennsylvania Rapid Bridge Replacement Project), 5%, 12/31/2030     130,000 153,377
Pennsylvania Higher Educational Facilities Authority Rev. (Drexel University), “A”, AGM, 4%, 5/01/2050     890,000 987,651
Pennsylvania Public School Building Authority, School Lease Rev. (School District of Philadelphia Project), “A”, AGM, 5%, 6/01/2032     640,000 773,619
Pennsylvania Turnpike Commission Rev., “A”, 5%, 12/01/2044     120,000 147,491
Pennsylvania Turnpike Commission Rev., ”A“, 4%, 12/01/2050     495,000 554,935
Pennsylvania Turnpike Commission Subordinate Rev., “A”, AGM, 4%, 12/01/2049     1,120,000 1,277,752
Philadelphia, PA, Authority for Industrial Development Rev. (MaST Charter School Project), “A”, 5.625%, 8/01/2036     100,000 111,019
Philadelphia, PA, Authority for Industrial Development Rev. (MaST Charter School Project), “A”, 5.75%, 8/01/2046     165,000 181,452
Philadelphia, PA, Authority for Industrial Development Rev. (MaST Charter School Project), “A”, 5.375%, 8/01/2051     155,000 171,700
Philadelphia, PA, Authority for Industrial Development Rev. (MaST Charter School Project), “B”, 6%, 8/01/2051     220,000 244,042
Philadelphia, PA, Authority for Industrial Development Rev. (Tacony Academy Charter School Project), 6.875%, 6/15/2033     100,000 110,861
Philadelphia, PA, Authority for Industrial Development Rev. (Tacony Academy Charter School Project), 7.375%, 6/15/2043     145,000 161,118
Philadelphia, PA, Authority for Industrial Development Rev. (Tacony Academy Charter School Project), “A-1”, 7%, 6/15/2043     120,000 132,343
Philadelphia, PA, Authority for Industrial Development, Multi-Family Housing Rev. (University Square Apartment Project-Section 8), “III”, 5.25%, 12/01/2047 (n)     180,000 189,738
Philadelphia, PA, Authority for Industrial Development, Multi-Family Housing Rev. (University Square Apartment Project-Section 8), “III”, 5.5%, 12/01/2058 (n)     260,000 275,309
Philadelphia, PA, Authority for Industrial Development, Senior Living Facilities Rev. (Wesley Enhanced Living Obligated Group), “A”, 5%, 7/01/2037     130,000 136,163
Philadelphia, PA, Authority for Industrial Development, Senior Living Facilities Rev. (Wesley Enhanced Living Obligated Group), “A”, 5%, 7/01/2042     150,000 155,001
Philadelphia, PA, Authority for Industrial Development, Senior Living Facilities Rev. (Wesley Enhanced Living Obligated Group), “A”, 5%, 7/01/2049     215,000 220,614
Philadelphia, PA, Gas Works Rev. (1998 General Ordinance), “15”, 5%, 8/01/2042     620,000 726,783
Philadelphia, PA, School District, “A”, 5%, 9/01/2033     25,000 30,965
Philadelphia, PA, School District, “A”, 5%, 9/01/2035     90,000 110,416
Philadelphia, PA, School District, “A”, 5%, 9/01/2036     30,000 36,710
Philadelphia, PA, School District, “A”, 5%, 9/01/2037     30,000 36,604
Philadelphia, PA, School District, “A”, 5%, 9/01/2038     30,000 36,510
Philadelphia, PA, School District, “A”, 4%, 9/01/2039     190,000 215,000
Philadelphia, PA, School District, “B”, 5%, 9/01/2043     95,000 113,668
Pittsburgh, PA, Urban Redevelopment Authority Rev., “C”, GNMA, 4.8%, 4/01/2028     995,000 999,716
Pittsburgh, PA, Water & Sewer Authority Rev., “A”, AGM, 5%, 9/01/2032     50,000 67,851
Pittsburgh, PA, Water & Sewer Authority Rev., “A”, AGM, 5%, 9/01/2033     40,000 55,083
Pittsburgh, PA, Water & Sewer Authority Rev., “A”, AGM, 4%, 9/01/2035     20,000 23,717
Pittsburgh, PA, Water & Sewer Authority Rev., “A”, AGM, 5%, 9/01/2044     130,000 159,358
Scranton-Lackawanna, PA, Health and Welfare Authority, University Rev. (Marywood University Project), 5%, 6/01/2046     555,000 581,806
Washington County, PA, Canon-McMillan School District, BAM, 4%, 6/01/2044     125,000 139,492
Washington County, PA, Canon-McMillan School District, BAM, 4%, 6/01/2046     185,000 205,622
Washington County, PA, Canon-McMillan School District, BAM, 4%, 6/01/2048     125,000 138,545
Washington County, PA, Redevelopment Authority Refunding Rev. (Victory Centre Tax Increment Financing Project), 4%, 7/01/2023     20,000 20,377
Washington County, PA, Redevelopment Authority Refunding Rev. (Victory Centre Tax Increment Financing Project), 5%, 7/01/2035     20,000 21,531
West Shore, PA, Area Authority Rev. (Messiah Village Project), “A”, 5%, 7/01/2030     40,000 43,958
West Shore, PA, Area Authority Rev. (Messiah Village Project), “A”, 5%, 7/01/2035     45,000 48,857
        $20,932,003
17

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Puerto Rico - 7.8%
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “D”, AGM, 5%, 7/01/2032   $ 440,000 $454,824
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “J”, NPFG, 5%, 7/01/2029     45,000 45,654
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “L”, AAC, 5.25%, 7/01/2038     1,000,000 1,135,650
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, AAC, 5.25%, 7/01/2030     325,000 360,857
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, AAC, 5.25%, 7/01/2031     225,000 250,614
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., “N”, NPFG, 5.25%, 7/01/2033     120,000 135,059
Commonwealth of Puerto Rico Highway & Transportation Authority Rev., Unrefunded Balance, “A”, NPFG, 5%, 7/01/2038     45,000 45,725
Commonwealth of Puerto Rico, “A”, AGM, 5.375%, 7/01/2025     60,000 61,448
Commonwealth of Puerto Rico, Public Improvement, “A”, NPFG, 5.5%, 7/01/2021     40,000 40,360
Commonwealth of Puerto Rico, Public Improvement, “C-7”, NPFG, 6%, 7/01/2027     295,000 303,888
Puerto Rico Convention Center District Authority, Hotel Occupancy Tax Rev., “A”, AAC, 5%, 7/01/2031     590,000 599,517
Puerto Rico Electric Power Authority Rev., “NN”, NPFG, 5.25%, 7/01/2022     180,000 185,524
Puerto Rico Electric Power Authority Rev., “NN”, NPFG, 4.75%, 7/01/2033     30,000 30,359
Puerto Rico Electric Power Authority Rev., “PP”, NPFG, 5%, 7/01/2024     20,000 20,245
Puerto Rico Electric Power Authority Rev., “PP”, NPFG, 5%, 7/01/2025     20,000 20,260
Puerto Rico Electric Power Authority Rev., “RR”, NPFG, 5%, 7/01/2022     45,000 45,334
Puerto Rico Electric Power Authority Rev., “TT”, 5%, 7/01/2032 (a)(d)     1,255,000 1,129,500
Puerto Rico Electric Power Authority Rev., “TT”, NPFG, 5%, 7/01/2024     80,000 80,979
Puerto Rico Electric Power Authority Rev., “UU”, AGM, 5%, 7/01/2022     50,000 51,683
Puerto Rico Electric Power Authority Rev., “VV”, NPFG, 5.25%, 7/01/2026     70,000 76,057
Puerto Rico Electric Power Authority Rev., “VV”, NPFG, 5.25%, 7/01/2030     310,000 343,306
Puerto Rico Electric Power Authority Rev., “WW”, 5%, 7/01/2028 (a)(d)     1,060,000 954,000
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority Rev. (Cogeneration Facilities - AES Puerto Rico Project), 6.625%, 6/01/2026     645,000 665,962
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 3/01/2021     5,000 5,000
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2021     65,000 65,051
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.375%, 12/01/2021     15,000 14,985
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2022     75,000 76,009
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 3/01/2026     15,000 14,984
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 4/01/2027     240,000 242,942
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.5%, 12/01/2031     80,000 79,902
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.125%, 4/01/2032     90,000 91,193
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5%, 3/01/2036     90,000 89,894
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (Ana G. Mendez University System Project), 5.375%, 4/01/2042     70,000 71,050
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (University of Sacred Heart), 4.375%, 10/01/2031     55,000 55,361
Puerto Rico Industrial, Tourist, Educational, Medical & Environmental Control Facilities Financing Authority, Higher Education Rev. (University of Sacred Heart), 5%, 10/01/2042     90,000 91,350
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2023     405,000 430,693
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2024     515,000 557,101
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2025     85,000 93,201
Puerto Rico Infrastructure Financing Authority Special Tax Rev., “C”, AAC, 5.5%, 7/01/2028     90,000 100,633
Puerto Rico Municipal Finance Agency, “A”, AGM, 5%, 8/01/2027     25,000 25,842
Puerto Rico Public Buildings Authority Government Facilities Rev., “I”, AGM, 5%, 7/01/2036     55,000 56,853
Puerto Rico Public Buildings Authority Government Facilities Rev., “M-2”, AAC, 10%, 7/01/2035     490,000 515,774
Puerto Rico Public Buildings Authority Government Facilities Rev., “M-3”, NPFG, 6%, 7/01/2027     125,000 128,766
Puerto Rico Public Buildings Authority Government Facilities Rev., “M-3”, NPFG, 6%, 7/01/2028     40,000 41,238
Puerto Rico Public Finance Corp., “E”, ETM, 6%, 8/01/2026     155,000 196,115
18

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Puerto Rico - continued
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-1”, 4.55%, 7/01/2040   $ 53,000 $57,640
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-1”, 5%, 7/01/2058     799,000 882,927
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.536%, 7/01/2053     4,000 4,301
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., “2019A-2”, 4.784%, 7/01/2058     88,000 96,014
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2027     93,000 81,751
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2031     1,010,000 774,306
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2033     984,000 698,424
Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, “2019A-1”, 0%, 7/01/2046     594,000 181,877
University of Puerto Rico Rev., “P”, NPFG, 5%, 6/01/2025     45,000 45,585
        $12,903,567
Rhode Island - 0.2%
Rhode Island Student Loan Authority, Student Loan Rev., “A”, 3.5%, 12/01/2034   $ 100,000 $102,938
Rhode Island Student Loan Authority, Student Loan Rev., ”A“, 3.625%, 12/01/2037     240,000 245,986
        $348,924
South Carolina - 2.0%
Richland County, SC, Environmental Improvement Rev. (International Paper), “A”, 3.875%, 4/01/2023   $ 645,000 $686,390
South Carolina Jobs & Economic Development Authority, Health Facilities Rev. (Lutheran Homes of South Carolina, Inc.), 5.125%, 5/01/2048     50,000 50,594
South Carolina Jobs & Economic Development Authority, Hospital Rev. (Prisma Health Obligated Group), “A”, 5%, 5/01/2048     495,000 573,358
South Carolina Jobs & Economic Development Authority, Residential Care Facilities Rev. (South Carolina Episcopal Home at Still Hopes), 5%, 4/01/2047     155,000 165,659
South Carolina Jobs & Economic Development Authority, Residential Care Facilities Rev. (South Carolina Episcopal Home at Still Hopes), 5%, 4/01/2052     140,000 149,461
South Carolina Public Service Authority Rev., “A”, 5.125%, 12/01/2043     355,000 392,172
South Carolina Public Service Authority Rev., “B”, 5.125%, 12/01/2043     845,000 933,480
Spartanburg County, SC, Regional Health Services District Hospital Rev., “A”, 5%, 4/15/2048     320,000 372,650
Spartanburg County, SC, Regional Health Services District Hospital Rev., “A”, AGM, 4%, 4/15/2045     55,000 61,692
        $3,385,456
Tennessee - 2.4%
Chattanooga, TN, Health, Educational & Housing Facility Board Rev. (Catholic Health Initiatives), “A”, 5.25%, 1/01/2045 (Prerefunded 1/01/2023)   $ 1,295,000 $1,410,423
Chattanooga, TN, Health, Educational & Housing Facility Board Rev. (CommonSpirit Health), “A-1”, 4%, 8/01/2044     15,000 16,635
Chattanooga, TN, Health, Educational & Housing Facility Board Rev. (CommonSpirit Health), “A-2”, 5%, 8/01/2044     30,000 36,311
Chattanooga, TN, Health, Educational & Housing Facility Board Rev. (CommonSpirit Health), “A-2”, 5%, 8/01/2049     15,000 18,064
Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2030     60,000 69,782
Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2031     65,000 75,325
Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2036     80,000 91,379
Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev., Refunding & Improvement (Trevecca Nazarene University Project), 5%, 10/01/2034     10,000 11,626
Metropolitan Government of Nashville & Davidson County, TN, Health & Educational Facilities Board Rev., Refunding & Improvement (Trevecca Nazarene University Project), 5%, 10/01/2039     15,000 17,193
Tennessee Energy Acquisition Corp., Gas Rev., “A”, 5.25%, 9/01/2021     2,185,000 2,238,358
        $3,985,096
Texas - 9.0%
Arlington, TX, Higher Education Finance Corp. Education Rev. (Newman International Academy), “A”, 5.375%, 8/15/2036   $ 50,000 $54,280
Arlington, TX, Higher Education Finance Corp. Education Rev. (Newman International Academy), “A”, 5.5%, 8/15/2046     230,000 247,563
Austin, TX, Convention Center (Convention Enterprises, Inc.), “A”, 5%, 1/01/2029     45,000 50,358
Austin, TX, Convention Center (Convention Enterprises, Inc.), “A”, 5%, 1/01/2031     65,000 71,803
Austin, TX, Convention Center (Convention Enterprises, Inc.), “A”, 5%, 1/01/2034     10,000 9,917
Austin, TX, Convention Center (Convention Enterprises, Inc.), “B”, 5%, 1/01/2026     25,000 25,944
Austin, TX, Convention Center (Convention Enterprises, Inc.), “B”, 5%, 1/01/2028     25,000 25,656
Austin, TX, Convention Center (Convention Enterprises, Inc.), “B”, 5%, 1/01/2030     30,000 30,254
Central Texas Regional Mobility Authority Senior Lien Rev., “A”, 5%, 1/01/2045     115,000 129,595
19

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Texas - continued
Clifton, TX, Higher Education Finance Corp. Rev. (Idea Public Schools), 6%, 8/15/2033   $ 130,000 $143,252
Clifton, TX, Higher Education Finance Corp. Rev. (Idea Public Schools), 5.75%, 8/15/2041 (Prerefunded 8/15/2021)     100,000 102,496
Clifton, TX, Higher Education Finance Corp. Rev. (Idea Public Schools), 5%, 8/15/2042     520,000 539,068
Clifton, TX, Higher Education Finance Corp. Rev. (Idea Public Schools), 6%, 8/15/2043     210,000 229,179
Dallas and Fort Worth, TX, International Airport Rev., “B”, 5%, 11/01/2044     465,000 497,057
Dallas, TX, Civic Center Convention Complex Rev., AGM, 5.25%, 8/15/2034     1,065,000 1,068,738
Decatur, TX, Hospital Authority Rev. (Wise Regional Health System), “A”, 5.25%, 9/01/2044     130,000 138,238
Gulf Coast, TX, Industrial Development Authority Rev. (CITGO Petroleum Corp.), 4.875%, 5/01/2025     135,000 136,829
Gulf Coast, TX, Industrial Development Authority Rev. (CITGO Petroleum Corp.), 8%, 4/01/2028     500,000 500,585
Harris County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Texas Children's Hospital), “A”, 4%, 10/01/2035     110,000 128,955
Harris County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Texas Children's Hospital), “A”, 4%, 10/01/2036     195,000 227,754
Harris County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Texas Children's Hospital), “A”, 4%, 10/01/2037     260,000 302,676
Harris County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Texas Children's Hospital), “A”, 4%, 10/01/2038     215,000 249,553
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2031     140,000 151,582
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2032     20,000 21,608
Harris County-Houston, TX, Sports Authority Rev., “C”, 5%, 11/15/2033     50,000 53,913
Harris County-Houston, TX, Sports Authority Rev., Capital Appreciation, “A”, AGM, 0%, 11/15/2041     90,000 38,911
Harris County-Houston, TX, Sports Authority Rev., Capital Appreciation, “A”, AGM, 0%, 11/15/2046     220,000 73,234
Houston, TX, Airport System Rev., Special Facilities Rev. (Continental Airlines, Inc.), 6.5%, 7/15/2030     555,000 570,695
Houston, TX, Airport System Rev., Special Facilities Rev. (United Airlines, Inc. Terminal E Project), 4.75%, 7/01/2024     200,000 209,546
Houston, TX, Airport System Rev., Special Facilities Rev. (United Airlines, Inc. Terminal Improvement Projects), “B-1”, 5%, 7/15/2030     1,360,000 1,501,576
Houston, TX, Airport System Rev., Subordinate Lien, “A”, 5%, 7/01/2031 (Prerefunded 7/01/2022)     190,000 201,611
Houston, TX, Industrial Development Corp. (United Parcel Service, Inc.), 6%, 3/01/2023     200,000 200,592
Mission, TX, Economic Development Corp. (NatGasoline Project), 4.625%, 10/01/2031 (n)     225,000 239,620
New Hope, TX, Cultural Education Facilities Finance Corp., Capital Improvement Rev. (CHF - Collegiate Housing Denton LLC - Texas Woman's University Housing Project), “A-1”, AGM, 5%, 7/01/2038     30,000 35,042
New Hope, TX, Cultural Education Facilities Finance Corp., Capital Improvement Rev. (CHF - Collegiate Housing Denton LLC - Texas Woman's University Housing Project), “A-1”, AGM, 5%, 7/01/2048     110,000 126,432
New Hope, TX, Cultural Education Facilities Finance Corp., Capital Improvement Rev. (CHF - Collegiate Housing Denton LLC - Texas Woman's University Housing Project), “A-1”, AGM, 5%, 7/01/2058     105,000 119,833
New Hope, TX, Cultural Education Facilities Finance Corp., Education Rev. (Beta Academy), “A”, 3.375%, 8/15/2029 (n)     30,000 30,278
New Hope, TX, Cultural Education Facilities Finance Corp., Education Rev. (Beta Academy), “A”, 5%, 8/15/2049 (n)     80,000 83,099
New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (MRC Senior Living - Langford Project), “A”, 5%, 11/15/2026     15,000 14,904
New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (MRC Senior Living - Langford Project), “A”, 5.375%, 11/15/2036     20,000 18,470
New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (MRC Senior Living - Langford Project), “A”, 5.5%, 11/15/2046     50,000 44,014
New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (MRC Senior Living - Langford Project), “A”, 5.5%, 11/15/2052     55,000 47,191
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “A-1”, 5%, 7/01/2031     20,000 20,640
New Hope, TX, Cultural Education Facilities Finance Corp., Senior Living Rev. (Cardinal Bay, Inc. - Village on the Park/Carriage Inn Project), “A-1”, 4%, 7/01/2036     90,000 84,008
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2030 (Prerefunded 4/01/2025)     35,000 41,245
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2035 (Prerefunded 4/01/2025)     30,000 35,353
New Hope, TX, Cultural Education Facilities Finance Corp., Student Housing Rev. (CHF - Collegiate Housing Stephenville III LLC - Tarleton State University Project), 5%, 4/01/2047 (Prerefunded 4/01/2025)     85,000 100,167
Newark, TX, Higher Education Finance Corp. Rev. (A+ Charter Schools, Inc.), “A”, 5.5%, 8/15/2035 (n)     105,000 116,951
Newark, TX, Higher Education Finance Corp. Rev. (A+ Charter Schools, Inc.), “A”, 5.75%, 8/15/2045 (n)     140,000 154,678
Newark, TX, Higher Education Finance Corp. Rev. (Austin Achieve Public Schools, Inc.), “A”, 5.25%, 6/15/2048     75,000 77,427
North Texas Education Finance Corp., Education Rev. (Uplift Education), “A”, 5.125%, 12/01/2042 (Prerefunded 6/01/2022)     215,000 228,072
Port Beaumont, TX, Navigation District Facility Rev. (Jefferson Gulf Coast Energy Project), “A”, 3.625%, 1/01/2035 (n)     200,000 204,924
Port Beaumont, TX, Navigation District Facility Rev. (Jefferson Gulf Coast Energy Project), “A”, 4%, 1/01/2050 (n)     465,000 478,127
Port Beaumont, TX, Navigation District Facility Rev. (Jefferson Gulf Coast Energy Project), “B”, 6%, 1/01/2025 (n)     265,000 272,714
20

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Texas - continued
Red River, TX, Education Finance Corp., Higher Education Rev. (Houston Baptist University Project), 5.5%, 10/01/2046   $ 295,000 $331,294
Red River, TX, Health Facilities Development Corp., Retirement Facilities Rev. (MRC Crossings Project), “A”, 7.5%, 11/15/2034     130,000 141,397
Red River, TX, Health Facilities Development Corp., Retirement Facilities Rev. (MRC Crossings Project), “A”, 7.75%, 11/15/2044     235,000 254,427
Red River, TX, Health Facilities Development Corp., Retirement Facilities Rev. (MRC Crossings Project), “A”, 8%, 11/15/2049     170,000 185,110
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2030     100,000 110,696
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2035     130,000 142,035
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2040     140,000 151,679
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Northwest Senior Housing Corp. Edgemere Project), 5.25%, 11/15/2047     130,000 120,173
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Northwest Senior Housing Corp. Edgemere Project), “A”, 5%, 11/15/2045     145,000 130,033
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Northwest Senior Housing Corp. Edgemere Project), “B”, 5%, 11/15/2030     195,000 192,481
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Northwest Senior Housing Corp. Edgemere Project), “B”, 5%, 11/15/2036     440,000 416,583
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Stayton at Museum Way), 5.75%, 12/01/2054     1,040,188 1,108,237
Tarrant County, TX, Cultural Education Facilities Finance Corp. Retirement Facility Rev. (Trinity Terrace Project), “A-1”, 5%, 10/01/2044     75,000 81,382
Texas Private Activity Surface Transportation Corp., Senior Lien Rev. (NTE Mobility Partners Segments 3 LLC Segments 3A & 3B Facility), 7%, 12/31/2038     210,000 240,045
Texas Private Activity Surface Transportation Corp., Senior Lien Rev. (NTE Mobility Partners Segments 3 LLC Segments 3A & 3B Facility), 6.75%, 6/30/2043     170,000 193,054
Texas Transportation Commission, Central Texas Turnpike System Rev., Capital Appreciation, “B”, 0%, 8/15/2036     435,000 239,115
Texas Transportation Commission, State Highway 249 System Rev., “A”, 5%, 8/01/2057     300,000 343,860
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2037     35,000 19,180
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2038     25,000 12,968
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2039     25,000 12,288
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2040     25,000 11,599
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2041     55,000 24,111
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2042     80,000 33,156
Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, “A”, 0%, 8/01/2043     60,000 23,558
        $15,024,668
Utah - 0.6%
Salt Lake City, UT, Salt Lake City International Airport Rev., “A”, 5%, 7/01/2043   $ 495,000 $584,204
Utah Charter School Finance Authority, Charter School Rev. (Da Vinci Academy of Science & Arts), 4%, 4/15/2047     305,000 319,509
Utah Charter School Finance Authority, Charter School Rev. (Reagan Academy Project), 5%, 2/15/2046 (n)     150,000 156,403
        $1,060,116
Vermont - 0.2%
Burlington, VT, Airport Rev., “A”, 4%, 7/01/2028   $ 110,000 $113,321
Vermont Student Assistance Corp., Education Loan Rev., “B”, 4.375%, 6/15/2046     185,000 189,527
        $302,848
Virginia - 2.2%
Embrey Mill Community Development Authority, VA, Special Assessment Rev., 7.25%, 3/01/2043   $ 515,000 $538,860
Peninsula Town Center Community Development Authority, VA, Special Obligation Refunding, 5%, 9/01/2037 (n)     145,000 155,894
Peninsula Town Center Community Development Authority, VA, Special Obligation Refunding, 4.5%, 9/01/2045 (n)     185,000 193,066
Prince William County, VA, Cherry Hill Community Development Authority Rev. (Potomac Shores Project), 5.4%, 3/01/2045 (n)     120,000 124,266
Virginia College Building Authority, Educational Facilities Rev. (Marymount University Project), “B”, 5.25%, 7/01/2030 (n)     215,000 231,329
Virginia College Building Authority, Educational Facilities Rev. (Marymount University Project), “B”, 5.25%, 7/01/2035 (n)     215,000 228,476
Virginia Small Business Financing Authority Rev. (Elizabeth River Crossings Opco LLC Project), 6%, 1/01/2037     490,000 519,263
Virginia Small Business Financing Authority Rev. (Elizabeth River Crossings Opco LLC Project), 5.5%, 1/01/2042     950,000 991,087
21

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Virginia - continued
Virginia Small Business Financing Authority Rev. (The Obligated Group of National Senior Campuses, Inc.), “A”, 4%, 1/01/2040   $ 625,000 $692,569
        $3,674,810
Washington - 1.7%
Kalispel Tribe Indians, WA, Priority District Rev., “A”, 5%, 1/01/2032 (n)   $ 155,000 $176,578
Kalispel Tribe Indians, WA, Priority District Rev., “A”, 5.25%, 1/01/2038 (n)     160,000 181,128
Washington Health Care Facilities Authority Rev. (Providence Health & Services), “A”, 5%, 10/01/2033     1,395,000 1,470,204
Washington Health Care Facilities Authority Rev. (Virginia Mason Medical Center), 5%, 8/15/2035     120,000 141,173
Washington Health Care Facilities Authority Rev. (Virginia Mason Medical Center), 5%, 8/15/2037     115,000 134,564
Washington Housing Finance Commission Nonprofit Housing Refunding Rev. (Hearthstone Project), “A”, 5%, 7/01/2048 (n)     175,000 178,866
Washington Housing Finance Commission Nonprofit Housing Refunding Rev. (Judson Park Project), 5%, 7/01/2048 (n)     100,000 106,776
Washington Housing Finance Commission Nonprofit Housing Rev. (Presbyterian Retirement Communities Northwest Projects), “A”, 5%, 1/01/2036 (n)     100,000 108,094
Washington Housing Finance Commission Nonprofit Housing Rev. (Presbyterian Retirement Communities Northwest Projects), “A”, 5%, 1/01/2046 (n)     130,000 138,865
Washington Housing Finance Commission Nonprofit Housing Rev. (Presbyterian Retirement Communities Northwest Projects), “A”, 5%, 1/01/2051 (n)     150,000 159,949
        $2,796,197
West Virginia - 0.3%
West Virginia Hospital Finance Authority Hospital Improvement Rev. (Cabell Huntington Hospital Obligated Group), “A”, 5%, 1/01/2043   $ 385,000 $455,547
Wisconsin - 7.0%
Green Bay, WI, Redevelopment Authority, (Green Bay Packaging, Inc. Project), VRDN, 0.08%, 7/01/2047 (n)   $ 1,115,000 $1,115,000
Wisconsin Center District Junior Dedicated Tax Rev., Capital Appreciation, “D”, AGM, 0%, 12/15/2040     730,000 394,061
Wisconsin Center District Senior Dedicated Tax Rev., Capital Appreciation, “C”, AGM, 0%, 12/15/2040     315,000 170,374
Wisconsin Health & Educational Facilities Authority Refunding Rev. (American Baptist Homes), 5%, 8/01/2027     135,000 145,604
Wisconsin Health & Educational Facilities Authority Refunding Rev. (American Baptist Homes), 5%, 8/01/2032     125,000 133,179
Wisconsin Health & Educational Facilities Authority Refunding Rev. (American Baptist Homes), 5%, 8/01/2037     70,000 73,842
Wisconsin Health & Educational Facilities Authority Refunding Rev. (American Baptist Homes), 5%, 8/01/2039     70,000 73,681
Wisconsin Health & Educational Facilities Authority Rev. (Aspirusm, Inc. Obligated Group), 4%, 8/15/2048     1,280,000 1,392,922
Wisconsin Health & Educational Facilities Authority Rev. (Aurora Health Care, Inc.), “A”, 5%, 7/15/2026 (Prerefunded 7/15/2021)     250,000 254,447
Wisconsin Health & Educational Facilities Authority Rev. (Marshfield Clinic Health System, Inc.), “C”, 5%, 2/15/2047     45,000 50,789
Wisconsin Health & Educational Facilities Authority Rev. (Rogers Memorial Hospital, Inc.), “A”, 5%, 7/01/2038     25,000 28,888
Wisconsin Health & Educational Facilities Authority Rev. (Rogers Memorial Hospital, Inc.), “A”, 5%, 7/01/2044     30,000 34,302
Wisconsin Health & Educational Facilities Authority Rev. (Rogers Memorial Hospital, Inc.), “A”, 5%, 7/01/2049     115,000 130,967
Wisconsin Health & Educational Facilities Authority Rev. (St. John's Community, Inc.), “A”, 5%, 9/15/2040     25,000 26,218
Wisconsin Health & Educational Facilities Authority Rev. (St. John's Community, Inc.), “A”, 5%, 9/15/2045     35,000 36,557
Wisconsin Health & Educational Facilities Authority Rev. (St. John's Community, Inc.), “A”, 5%, 9/15/2050     155,000 161,704
Wisconsin Public Finance Authority Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5%, 7/01/2022     50,000 51,754
Wisconsin Public Finance Authority Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5.25%, 7/01/2028     1,825,000 1,908,001
Wisconsin Public Finance Authority Airport Facilities Rev. (Transportation Infrastructure Properties LLC), “B”, 5%, 7/01/2042     105,000 108,942
Wisconsin Public Finance Authority Education Rev. (Mountain Island Charter School), 5%, 7/01/2037     45,000 48,220
Wisconsin Public Finance Authority Education Rev. (Mountain Island Charter School), 5%, 7/01/2047     70,000 74,309
Wisconsin Public Finance Authority Education Rev. (Pine Lake Preparatory), 4.95%, 3/01/2030 (n)     70,000 75,517
Wisconsin Public Finance Authority Education Rev. (Pine Lake Preparatory), 5.25%, 3/01/2035 (n)     70,000 75,344
Wisconsin Public Finance Authority Educational Facilities Rev. (Community School of Davidson Project), 5%, 10/01/2033 (n)     30,000 33,609
Wisconsin Public Finance Authority Educational Facilities Rev. (Community School of Davidson Project), 5%, 10/01/2048 (n)     160,000 173,966
Wisconsin Public Finance Authority Healthcare Facilities Rev. (Blue Ridge Healthcare), “A”, 4%, 1/01/2045     35,000 39,282
Wisconsin Public Finance Authority Healthcare Facility Rev. (Church Home of Hartford, Inc. Project), “A”, 5%, 9/01/2025 (n)     35,000 37,662
Wisconsin Public Finance Authority Healthcare Facility Rev. (Church Home of Hartford, Inc. Project), “A”, 5%, 9/01/2030 (n)     95,000 103,272
Wisconsin Public Finance Authority Healthcare Facility Rev. (Church Home of Hartford, Inc. Project), “A”, 5%, 9/01/2038 (n)     80,000 85,659
Wisconsin Public Finance Authority Higher Education Facilities Rev. (Gannon University Project), 5%, 5/01/2047     100,000 110,878
Wisconsin Public Finance Authority Hospital Rev. (WakeMed), “A”, 4%, 10/01/2049     1,285,000 1,393,210
Wisconsin Public Finance Authority Limited Obligation Grant Rev. (American Dream at Meadowlands Project), “A”, 6.25%, 8/01/2027 (n)     670,000 722,669
22

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Municipal Bonds - continued
Wisconsin - continued
Wisconsin Public Finance Authority Limited Obligation PILOT Rev. (American Dream at Meadowlands Project), 6.5%, 12/01/2037 (n)   $ 550,000 $598,345
Wisconsin Public Finance Authority Limited Obligation PILOT Rev. (American Dream at Meadowlands Project), 7%, 12/01/2050     285,000 314,361
Wisconsin Public Finance Authority Rev. (Roseman University of Health Sciences Project), 5.75%, 4/01/2035     190,000 215,865
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary's Woods at Marylhurst Project), “A”, 5.25%, 5/15/2037 (n)     55,000 59,118
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary's Woods at Marylhurst Project), “A”, 5.25%, 5/15/2042 (n)     35,000 37,422
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary's Woods at Marylhurst Project), “A”, 5.25%, 5/15/2047 (n)     180,000 191,734
Wisconsin Public Finance Authority Senior Living Refunding Bonds Rev. (Mary's Woods at Marylhurst Project), “A”, 5.25%, 5/15/2052 (n)     55,000 58,475
Wisconsin Public Finance Authority Senior Living Rev. (Rose Villa Project), “A”, 5.125%, 11/15/2029 (n)     140,000 149,586
Wisconsin Public Finance Authority Senior Living Rev. (Rose Villa Project), “A”, 5.5%, 11/15/2034 (n)     125,000 133,964
Wisconsin Public Finance Authority Senior Living Rev. (Rose Villa Project), “A”, 5.75%, 11/15/2044 (n)     120,000 128,389
Wisconsin Public Finance Authority Senior Living Rev. (Rose Villa Project), “A”, 6%, 11/15/2049 (n)     155,000 166,999
Wisconsin Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2044     30,000 35,349
Wisconsin Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2054     35,000 40,901
Wisconsin Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), “A”, AGM, 5%, 7/01/2058     40,000 46,696
Wisconsin Public Finance Authority Student Housing Rev. (Western Carolina University Project), 5.25%, 7/01/2047     235,000 252,848
        $11,694,881
Total Municipal Bonds   $254,038,263
Bonds – 0.1%
Consumer Services – 0.1%  
Toll Road Investors Partnership II LP, Capital Appreciation, “A”, NPFG, 0%, 2/15/2045  (n)   $ 25,195 $5,779
Toll Road Investors Partnership II LP, Capital Appreciation, “B”, NPFG, 0%, 2/15/2033  (n)     215,000 108,881
Total Bonds   $114,660
Investment Companies (h) - 4.0%
Money Market Funds – 4.0%  
MFS Institutional Money Market Portfolio, 0.07% (v)     6,600,043 $6,600,043
 
Other Assets, Less Liabilities - 1.8%   2,959,426
Variable Rate Municipal Term Preferred Shares (VMTPS), at liquidation value (issued by the fund) - (58.7)% (97,500,000)
Net assets applicable to common shares - 100.0%   $166,212,392
(a) Non-income producing security.
(d) In default.
(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $6,600,043 and $254,152,923, respectively.
(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $29,681,381, representing 17.9% of net assets applicable to common shares.
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.
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Portfolio of Investments (unaudited) – continued
(z) Restricted securities are not registered under the Securities Act of 1933 and are subject to legal restrictions on resale. These securities generally may be resold in transactions exempt from registration or to the public if the securities are subsequently registered. Disposal of these securities may involve time-consuming negotiations and prompt sale at an acceptable price may be difficult. The fund holds the following restricted securities:
Restricted Securities Acquisition
Date
Cost Value
California Pollution Control Financing Authority, Solid Waste Disposal Rev. (CalPlant I Project), 8%, 7/01/2039 5/25/2017 $457,726 $299,000
Collier County, FL, Industrial Development Authority, Continuing Care Community Rev. (Arlington of Naples Project), “A”, 8.125%, 5/15/2044 12/16/2013 610,000 372,100
Collier County, FL, Industrial Development Authority, Continuing Care Community Rev. (Arlington of Naples Project), “A”, 6.5%, 5/15/2049 6/30/2015 100,000 61,000
Total Restricted Securities     $732,100
% of Net assets applicable to common shares     0.4%
The following abbreviations are used in this report and are defined:
AAC Ambac Assurance Corp.
AGM Assured Guaranty Municipal
BAM Build America Mutual
CALHF California Health Facility Construction Loan Insurance Program
COP Certificate of Participation
ETM Escrowed to Maturity
GNMA Government National Mortgage Assn.
NPFG National Public Finance Guarantee Corp.
VRDN Variable rate demand note that may be puttable to the issuer at the option of the holder. The stated interest rate, which generally resets either daily or weekly, represents the rate in effect at period end and may not be the current rate.
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
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Supplemental Information
2/28/21 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service.  Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of February 28, 2021 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Municipal Bonds $— $254,038,263 $— $254,038,263
U.S. Corporate Bonds 114,660 114,660
Mutual Funds 6,600,043 6,600,043
Total $6,600,043 $254,152,923 $— $260,752,966
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers:
Affiliated Issuers Beginning
Value
Purchases Sales
Proceeds
Realized
Gain
(Loss)
Change in
Unrealized
Appreciation or
Depreciation
Ending
Value
MFS Institutional Money Market Portfolio $1,190,218 $15,603,884 $10,194,059 $— $— $6,600,043
Affiliated Issuers Dividend
Income
Capital Gain
Distributions
MFS Institutional Money Market Portfolio $791 $—
25

Supplemental Information (unaudited) – continued
(3) Impacts of COVID-19
The pandemic related to the global spread of novel coronavirus disease (COVID-19), which was first detected in December 2019, has resulted in significant disruptions to global business activity and the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general. Multiple surges in cases globally, the availability and widespread adoption of vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic including impacts to the prices and liquidity of the fund's investments and the fund's performance.
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