| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Municipal Obligations–152.99%(a) | ||||||
| Alabama–0.80% | ||||||
| Birmingham (City of), AL Special Care Facilities Financing Authority (Methodist Home for the Aging); | ||||||
| Series 2016, RB | 5.25% | 06/01/2025 | $ 270 | $ 265,448 | ||
| Series 2016, RB | 5.75% | 06/01/2045 | 25 | 21,051 | ||
| Black Belt Energy Gas District (The) (No. 8); Series 2022 A, RB(b) | 4.00% | 12/01/2029 | 1,300 | 1,259,029 | ||
| Lower Alabama Gas District (The); Series 2016 A, RB | 5.00% | 09/01/2046 | 905 | 909,343 | ||
| Southeast Energy Authority A Cooperative District (No. 3); Series 2022 A-1, RB(b) | 5.50% | 12/01/2029 | 1,320 | 1,407,733 | ||
| Tuscaloosa (County of), AL Industrial Development Authority (Hunt Refining); Series 2019 A, Ref. IDR(c) | 5.25% | 05/01/2044 | 820 | 726,719 | ||
| 4,589,323 | ||||||
| Alaska–0.06% | ||||||
| Northern Tobacco Securitization Corp.; Series 2021 A-1, Ref. RB | 4.00% | 06/01/2050 | 395 | 345,835 | ||
| Arizona–1.86% | ||||||
| Arizona (State of) Industrial Development Authority (Leman Academy of Excellence); Series 2019 A, RB(c) | 5.00% | 07/01/2039 | 1,090 | 1,014,389 | ||
| Arizona (State of) Industrial Development Authority (Master Academy of Nevada - Bonanza Capmus); Series 2020 A, RB(c) | 5.00% | 12/15/2040 | 230 | 222,178 | ||
| Glendale (City of), AZ Industrial Development Authority (The Beatitudes Campus); | ||||||
| Series 2017, Ref. RB | 5.00% | 11/15/2032 | 1,280 | 1,202,698 | ||
| Series 2017, Ref. RB | 5.00% | 11/15/2045 | 835 | 674,653 | ||
| La Paz (County of), AZ Industrial Development Authority (Charter School Solutions- Harmony Public Schools); Series 2018 A, RB | 5.00% | 02/15/2048 | 700 | 672,996 | ||
| Maricopa (County of), AZ Industrial Development Authority (Legacy Traditional Schools); | ||||||
| Series 2019, Ref. RB(c) | 5.00% | 07/01/2054 | 550 | 477,048 | ||
| Series 2021, RB(c) | 4.00% | 07/01/2051 | 875 | 646,327 | ||
| Phoenix (City of), AZ Industrial Development Authority (Legacy Traditional Schools); Series 2014 A, RB(c) | 6.50% | 07/01/2034 | 450 | 458,700 | ||
| Pima (County of), AZ Industrial Development Authority (American Leadership Academy); Series 2019, Ref. RB(c) | 5.00% | 06/15/2052 | 340 | 301,144 | ||
| Pima (County of), AZ Industrial Development Authority (Grande Innovations Academy); Series 2018, RB(c) | 5.25% | 07/01/2048 | 1,125 | 1,017,588 | ||
| Pima (County of), AZ Industrial Development Authority (Tucson Medical Center); Series 2021, Ref. RB | 3.00% | 04/01/2051 | 990 | 691,067 | ||
| Salt Verde Financial Corp.; | ||||||
| Series 2007, RB | 5.00% | 12/01/2032 | 735 | 767,260 | ||
| Series 2007, RB | 5.00% | 12/01/2037 | 2,435 | 2,476,133 | ||
| 10,622,181 | ||||||
| Arkansas–0.09% | ||||||
| Arkansas (State of) Development Finance Authority (Baptist Memorial Health); Series 2020, Ref. RB | 5.00% | 09/01/2044 | 515 | 516,043 | ||
| California–22.91% | ||||||
| Alhambra Unified School District (Election of 2004); | ||||||
| Series 2009 B, GO Bonds (INS - AGC)(d)(e) | 0.00% | 08/01/2035 | 3,570 | 2,263,052 | ||
| Series 2009 B, GO Bonds (INS - AGC)(d)(e) | 0.00% | 08/01/2036 | 5,770 | 3,465,450 | ||
| Bay Area Toll Authority (San Francisco Bay Area); Series 2017 F-1, RB(b)(f)(g)(h) | 5.00% | 04/01/2027 | 2,280 | 2,472,080 | ||
| Beverly Hills Unified School District (Election of 2008); | ||||||
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2026 | 1,390 | 1,254,459 | ||
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2031 | 2,680 | 2,038,086 | ||
| California (State of); | ||||||
| Series 2020, GO Bonds (INS - BAM)(d) | 3.00% | 11/01/2050 | 2,225 | 1,723,703 | ||
| Series 2022, Ref. GO Bonds | 4.00% | 04/01/2042 | 3,040 | 3,061,030 | ||
| California (State of) Community Housing Agency (Annadel Apartments); Series 2019 A, RB(c) | 5.00% | 04/01/2049 | 790 | 652,793 | ||
| California (State of) County Tobacco Securitization Agency (Alameda County Tobacco Asset Securitization Corp.); Series 2006 C, RB(e) | 0.00% | 06/01/2055 | 10,115 | 915,656 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | ||
| California–(continued) | |||||
| California (State of) County Tobacco Securitization Agency (Los Angeles County Securitization Corp.); | |||||
| Series 2020 A, Ref. RB | 4.00% | 06/01/2040 | $ 250 | $ 244,332 | |
| Series 2020 B-1, Ref. RB | 5.00% | 06/01/2049 | 55 | 55,328 | |
| Series 2020 B-2, Ref. RB(e) | 0.00% | 06/01/2055 | 1,590 | 265,732 | |
| California (State of) Health Facilities Financing Authority (City of Hope); Series 2012 A, RB | 5.00% | 11/15/2032 | 3,500 | 3,500,348 | |
| California (State of) Health Facilities Financing Authority (PIH Health); Series 2020 A, RB | 4.00% | 06/01/2050 | 3,935 | 3,570,387 | |
| California (State of) Housing Finance Agency (Social Certificates); | |||||
| Series 2021 A, RB | 3.25% | 08/20/2036 | 5 | 4,369 | |
| Series 2021-2A, Revenue Ctfs. (CEP - FHLMC) | 3.75% | 03/25/2035 | 3,767 | 3,641,856 | |
| Series 2023 1, RB | 4.38% | 09/20/2036 | 765 | 756,507 | |
| California (State of) Infrastructure & Economic Development Bank; | |||||
| Series 2003 A, RB(b)(f)(h) | 5.00% | 01/01/2028 | 1,720 | 1,905,904 | |
| Series 2003 A, RB(b)(f)(h) | 5.00% | 01/01/2028 | 3,339 | 3,699,695 | |
| Series 2020, RB(b)(c)(i) | 3.65% | 01/31/2024 | 845 | 842,075 | |
| California (State of) Municipal Finance Authority (Bella Mente Montessori Academy); Series 2018 A, RB(c) | 5.00% | 06/01/2048 | 180 | 160,034 | |
| California (State of) Municipal Finance Authority (CHF-Davis I, LLC - West Village Student Housing); Series 2018, RB | 5.00% | 05/15/2037 | 1,265 | 1,308,850 | |
| California (State of) Municipal Finance Authority (Green Bonds); Series 2021, RB (INS - BAM)(d) | 4.00% | 05/15/2046 | 500 | 463,465 | |
| California (State of) Municipal Finance Authority (Linxs APM); Series 2018 A, RB(i) | 5.00% | 12/31/2047 | 885 | 892,527 | |
| California (State of) Municipal Finance Authority (United Airlines, Inc.); Series 2019, RB(i) | 4.00% | 07/15/2029 | 1,590 | 1,549,613 | |
| California (State of) Municipal Finance Authority (William Jessup University); Series 2019, Ref. RB(c) | 5.00% | 08/01/2039 | 240 | 222,869 | |
| California (State of) Pollution Control Financing Authority; | |||||
| Series 2012, RB(c)(i) | 5.00% | 07/01/2027 | 980 | 987,165 | |
| Series 2012, RB(c)(i) | 5.00% | 07/01/2030 | 1,450 | 1,459,354 | |
| Series 2012, RB(c)(i) | 5.00% | 07/01/2037 | 3,195 | 3,200,846 | |
| California (State of) Statewide Communities Development Authority (Loma Linda University Medical Center); | |||||
| Series 2016 A, RB(c) | 5.00% | 12/01/2041 | 1,245 | 1,205,787 | |
| Series 2016 A, RB(c) | 5.25% | 12/01/2056 | 950 | 893,303 | |
| California State University; Series 2019 A, RB(h) | 5.00% | 11/01/2049 | 2,010 | 2,156,771 | |
| Clovis Unified School District (Election of 2004); Series 2004 A, GO Bonds (INS - NATL)(d)(e) | 0.00% | 08/01/2029 | 695 | 566,118 | |
| CSCDA Community Improvement Authority (Jefferson-Anaheim Social Bonds); Series 2021 A, RB(c) | 3.13% | 08/01/2056 | 790 | 538,757 | |
| CSCDA Community Improvement Authority (Oceanaire-Long Beach Social Bonds); Series 2021 A-2, RB(c) | 4.00% | 09/01/2056 | 790 | 590,695 | |
| CSCDA Community Improvement Authority (Parallel-Anaheim Social Bonds); Series 2021, RB(c) | 4.00% | 08/01/2056 | 475 | 349,139 | |
| Dry Creek Joint Elementary School District (Election of 2008-Measure E); | |||||
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2040 | 4,685 | 2,273,181 | |
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2041 | 4,965 | 2,297,817 | |
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2042 | 5,265 | 2,337,778 | |
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2043 | 3,460 | 1,460,096 | |
| Series 2009, GO Bonds(e) | 0.00% | 08/01/2044 | 4,825 | 1,937,451 | |
| El Segundo Unified School District (Election of 2008); | |||||
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2031 | 1,775 | 1,333,700 | |
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2032 | 1,980 | 1,425,095 | |
| Golden State Tobacco Securitization Corp.; | |||||
| Series 2013 A, RB | 5.00% | 06/01/2023 | 3,250 | 3,250,000 | |
| Series 2021 B-2, Ref. RB(e) | 0.00% | 06/01/2066 | 2,455 | 249,388 | |
| Los Angeles (City of), CA Department of Airports; | |||||
| Series 2019 A, Ref. RB(i) | 5.00% | 05/15/2034 | 855 | 920,137 | |
| Series 2021, RB(b)(f)(i) | 5.00% | 11/15/2031 | 5 | 5,609 | |
| Series 2021, Ref. RB(i) | 5.00% | 05/15/2046 | 1,995 | 2,090,975 | |
| Los Angeles (City of), CA Department of Airports (Green Bonds); Series 2022 G, RB(i) | 5.50% | 05/15/2037 | 1,665 | 1,872,000 | |
| Los Angeles (City of), CA Departments of Water & Power; Series 2020 B, RB(h) | 5.00% | 07/01/2050 | 2,220 | 2,394,498 | |
| Menifee Union School District (Election of 2008); Series 2009 C, GO Bonds (INS - AGC)(d)(e) | 0.00% | 08/01/2034 | 1,985 | 1,316,359 | |
| Moreland School District (Crossover Series 14); Series 2006 C, Ref. GO Bonds (INS - AMBAC)(d)(e) | 0.00% | 08/01/2029 | 3,955 | 3,229,398 | |
| M-S-R Energy Authority; Series 2009 B, RB | 6.50% | 11/01/2039 | 2,645 | 3,073,844 | |
| Mt. San Antonio Community College District (Election of 2008); Series 2013 A, GO Bonds(j) | 6.25% | 08/01/2043 | 1,900 | 1,723,688 | |
| Oak Grove School District (Election of 2008); Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2028 | 2,875 | 2,416,183 | |
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| California–(continued) | ||||||
| Patterson Joint Unified School District (Election of 2008); | ||||||
| Series 2009 B, GO Bonds (INS - AGM)(d)(e) | 0.00% | 08/01/2036 | $ 4,025 | $ 2,374,117 | ||
| Series 2009 B, GO Bonds (INS - AGM)(d)(e) | 0.00% | 08/01/2037 | 1,590 | 883,992 | ||
| Poway Unified School District (Election of 2008 - School Facilities Improvement District No. 2007-1); | ||||||
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2027 | 4,005 | 3,501,100 | ||
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2031 | 5,000 | 3,796,993 | ||
| Regents of the University of California Medical Center; Series 2022 P, RB(g)(h) | 4.00% | 05/15/2053 | 5,110 | 4,661,424 | ||
| Sacramento (City of), CA Unified School District (Election of 2020); | ||||||
| Series 2022 A, GO Bonds (INS - BAM)(d) | 5.50% | 08/01/2047 | 1,230 | 1,364,198 | ||
| Series 2022 A, GO Bonds (INS - BAM)(d) | 5.50% | 08/01/2052 | 1,495 | 1,653,396 | ||
| San Diego (County of), CA Regional Airport Authority; | ||||||
| Series 2021 A, RB | 4.00% | 07/01/2051 | 1,885 | 1,786,701 | ||
| Series 2021 A, RB | 5.00% | 07/01/2056 | 1,900 | 2,018,049 | ||
| San Francisco (City & County of), CA Airport Commission (San Francisco International Airport); Series 2019 E, RB(i) | 5.00% | 05/01/2037 | 635 | 669,026 | ||
| San Jose Evergreen Community College District (Election of 2004); Series 2008 B, GO Bonds (INS - AGM)(d)(e) | 0.00% | 09/01/2030 | 3,300 | 2,582,829 | ||
| Santa Margarita Water District (Community Facilities District No. 2013-1); Series 2013, RB(b)(f) | 5.50% | 09/01/2023 | 590 | 593,014 | ||
| Silicon Valley Tobacco Securitization Authority (Santa Clara); Series 2007 A, RB(e) | 0.00% | 06/01/2041 | 3,295 | 1,171,365 | ||
| William S. Hart Union High School District (Election of 2008); | ||||||
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2032 | 15,570 | 11,256,987 | ||
| Series 2009 A, GO Bonds(e) | 0.00% | 08/01/2033 | 5,725 | 3,969,035 | ||
| 130,767,558 | ||||||
| Colorado–6.12% | ||||||
| Aurora Crossroads Metropolitan District No. 2; Series 2020 B, GO Bonds | 7.75% | 12/15/2050 | 500 | 459,267 | ||
| Aurora Highlands Community Authority Board; Series 2021 A, Ref. RB | 5.75% | 12/01/2051 | 790 | 708,974 | ||
| Belford North Metropolitan District; Series 2020 A, GO Bonds | 5.50% | 12/01/2050 | 985 | 874,970 | ||
| Centerra Metropolitan District No. 1 (In the City of Loveland); | ||||||
| Series 2017, RB(c) | 5.00% | 12/01/2047 | 1,580 | 1,420,763 | ||
| Series 2020 A, Ref. GO Bonds | 5.00% | 12/01/2051 | 630 | 542,184 | ||
| Colorado (State of) Health Facilities Authority (CommonSpirit Health); | ||||||
| Series 2019 A-2, Ref. RB | 5.00% | 08/01/2044 | 3,485 | 3,588,058 | ||
| Series 2019 A-2, Ref. RB | 4.00% | 08/01/2049 | 1,585 | 1,427,768 | ||
| Colorado (State of) Health Facilities Authority (Evangelical Lutheran Good Samaritan Society (The)); Series 2017, Ref. RB(b)(f) | 5.00% | 06/01/2027 | 555 | 597,555 | ||
| Colorado (State of) Health Facilities Authority (SCL Health System); Series 2013 A, RB(b)(f) | 5.50% | 01/01/2024 | 2,500 | 2,531,699 | ||
| Colorado (State of) Science and Technology Park Metropolitan District No. 1; Series 2018, RB | 5.00% | 12/01/2033 | 500 | 492,953 | ||
| Colorado Crossing Metropolitan District No. 2; Series 2020 A-1, Ref. GO Bonds | 5.00% | 12/01/2047 | 500 | 431,240 | ||
| Denver (City & County of), CO; | ||||||
| Series 2013 B, RB | 5.25% | 11/15/2032 | 5,000 | 5,035,469 | ||
| Series 2018 A, RB(h)(i) | 5.25% | 12/01/2048 | 4,160 | 4,310,293 | ||
| Series 2018 A, Ref. RB(i) | 5.25% | 12/01/2048 | 1,635 | 1,694,070 | ||
| Series 2022 A, RB(i) | 5.00% | 11/15/2047 | 2,895 | 3,023,903 | ||
| Series 2022 A, RB(i) | 5.50% | 11/15/2053 | 580 | 628,479 | ||
| Great Western Metropolitan District; Series 2020, Ref. GO Bonds | 4.75% | 12/01/2050 | 435 | 373,655 | ||
| Jefferson (County of), CO Center Metropolitan District No. 1; Series 2020 B, Ref. RB | 5.75% | 12/15/2050 | 725 | 695,505 | ||
| Johnstown Plaza Metropolitan District; Series 2022, Ref. GO Bonds | 4.25% | 12/01/2046 | 766 | 615,048 | ||
| Mirabelle Metropolitan District No. 2; Series 2020 A, GO Bonds | 5.00% | 12/01/2049 | 605 | 534,689 | ||
| Mulberry Metropolitan District No. 2; Series 2022, RB | 7.00% | 12/01/2034 | 705 | 716,345 | ||
| Neu Town Metropolitan District; Series 2018 A, Ref. GO Bonds | 5.38% | 12/01/2046 | 665 | 629,091 | ||
| North Range Metropolitan District No. 3; Series 2020 A, GO Bonds | 5.00% | 12/01/2040 | 500 | 455,370 | ||
| Rampart Range Metropolitan District No. 5; Series 2021, RB | 4.00% | 12/01/2051 | 500 | 347,620 | ||
| Sky Ranch Community Authority Board; Series 2022 A, RB | 5.75% | 12/01/2052 | 500 | 465,876 | ||
| Village Metropolitan District (The); Series 2020, Ref. GO Bonds | 4.15% | 12/01/2030 | 465 | 439,675 | ||
| Windler Public Improvement Authority; | ||||||
| Series 2021 A-1, RB | 4.13% | 12/01/2051 | 1,260 | 763,257 | ||
| Series 2021 A-2, RB(j) | 4.50% | 12/01/2041 | 1,950 | 1,106,472 | ||
| 34,910,248 | ||||||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | ||
| District of Columbia–2.33% | |||||
| District of Columbia; | |||||
| Series 2006 B-1, RB (INS - NATL)(d) | 5.00% | 02/01/2031 | $ 785 | $ 785,587 | |
| Series 2022 A, RB | 5.00% | 07/01/2047 | 1,575 | 1,724,226 | |
| District of Columbia (Provident Group - Howard Properties LLC); Series 2013, RB | 5.00% | 10/01/2045 | 585 | 557,725 | |
| District of Columbia Water & Sewer Authority; Series 2022, RB(h) | 5.00% | 10/01/2044 | 5,475 | 5,881,115 | |
| District of Columbia Water & Sewer Authority (Green Bonds); Series 2022 C-1, RB | 4.00% | 10/01/2051 | 3,095 | 2,913,515 | |
| Metropolitan Washington Airports Authority (Dulles Metrorail and Capital Improvement); Series 2019 B, Ref. RB | 4.00% | 10/01/2049 | 1,580 | 1,447,424 | |
| 13,309,592 | |||||
| Florida–9.94% | |||||
| Alachua (County of), FL Health Facilities Authority (Terraces at Bonita Springs); | |||||
| Series 2022 A, Ref. RB(c) | 5.00% | 11/15/2061 | 1,075 | 704,877 | |
| Series 2022 B, RB(c) | 6.50% | 11/15/2033 | 100 | 88,483 | |
| Brevard (County of), FL Health Facilities Authority (Health First Obligated Group); Series 2022 A, Ref. RB | 4.00% | 04/01/2052 | 475 | 428,592 | |
| Broward (County of), FL; | |||||
| Series 2013 C, RB(b)(f) | 5.25% | 10/01/2023 | 2,500 | 2,515,165 | |
| Series 2017, RB(g)(h)(i) | 5.00% | 10/01/2047 | 3,450 | 3,510,410 | |
| Series 2019 A, RB(i) | 5.00% | 10/01/2049 | 1,325 | 1,361,822 | |
| Series 2019 B, RB(i) | 4.00% | 09/01/2044 | 790 | 744,959 | |
| Series 2022 A, RB(g)(h) | 4.00% | 10/01/2047 | 5,805 | 5,682,298 | |
| Broward (County of), FL (Convention Center Expansion); Series 2021, RB | 4.00% | 09/01/2047 | 3,160 | 3,017,268 | |
| Capital Trust Agency, Inc. (Sarasota-Manatee Jewish Housing Council, Inc.); Series 2017, Ref. RB(c) | 5.00% | 07/01/2037 | 1,385 | 1,152,468 | |
| Florida (State of) North Broward Hospital District; Series 2017 B, Ref. RB | 5.00% | 01/01/2042 | 1,135 | 1,155,887 | |
| Florida (State of) South Broward Hospital District (South Broward Hospital District Obligated Group); Series 2021 A, RB | 3.00% | 05/01/2051 | 790 | 559,789 | |
| Florida Development Finance Corp. (Brightline Fllorida Passenger Rail Expansion); Series 2022 A, Ref. RB(b)(c)(i) | 7.25% | 10/03/2023 | 790 | 803,032 | |
| Florida Development Finance Corp. (Green Bonds); Series 2019 B, RB(c)(i) | 7.38% | 01/01/2049 | 640 | 618,082 | |
| Greater Orlando Aviation Authority; | |||||
| Series 2017 A, RB(i) | 5.00% | 10/01/2052 | 485 | 491,824 | |
| Series 2019 A, RB(i) | 4.00% | 10/01/2044 | 2,500 | 2,364,045 | |
| Lake (County of), FL (Lakeside at Waterman Village); | |||||
| Series 2020 A, Ref. RB | 5.50% | 08/15/2040 | 615 | 539,095 | |
| Series 2020 A, Ref. RB | 5.75% | 08/15/2050 | 270 | 229,460 | |
| Series 2020 A, Ref. RB | 5.75% | 08/15/2055 | 1,000 | 830,928 | |
| Lee (County of), FL; | |||||
| Series 2021 B, RB(i) | 5.00% | 10/01/2034 | 970 | 1,055,142 | |
| Series 2022, RB | 5.25% | 08/01/2049 | 3,940 | 4,251,868 | |
| Miami Beach (City of), FL Health Facilities Authority (Mt. Sinai Medical Center); Series 2014, Ref. RB | 5.00% | 11/15/2039 | 845 | 849,134 | |
| Miami-Dade (County of), FL; | |||||
| Series 2021, RB | 4.00% | 10/01/2051 | 2,375 | 2,235,402 | |
| Series 2022 A, Ref. RB(i) | 5.25% | 10/01/2052 | 1,230 | 1,297,083 | |
| Subseries 2021 A-2, Ref. RB (INS - AGM)(d) | 4.00% | 10/01/2049 | 2,305 | 2,197,832 | |
| Subseries 2021 B-1, Ref. RB(i) | 4.00% | 10/01/2050 | 980 | 900,737 | |
| Miami-Dade (County of), FL Expressway Authority; Series 2010 A, RB | 5.00% | 07/01/2040 | 2,500 | 2,512,682 | |
| Miami-Dade (County of), FL Transit System; Series 2022, RB | 5.00% | 07/01/2051 | 3,960 | 4,245,743 | |
| Orange (County of), FL Health Facilities Authority (Orlando Health Obligated Group); Series 2023 A, RB | 5.00% | 10/01/2053 | 920 | 962,205 | |
| Osceola (County of), FL; | |||||
| Series 2020 A-2, Ref. RB(e) | 0.00% | 10/01/2044 | 1,000 | 320,925 | |
| Series 2020 A-2, Ref. RB(e) | 0.00% | 10/01/2048 | 1,500 | 375,939 | |
| Series 2020 A-2, Ref. RB(e) | 0.00% | 10/01/2051 | 600 | 125,708 | |
| Series 2020 A-2, Ref. RB(e) | 0.00% | 10/01/2052 | 430 | 84,879 | |
| Series 2020 A-2, Ref. RB(e) | 0.00% | 10/01/2054 | 365 | 64,184 | |
| Putnam (County of), FL Development Authority (Seminole Electric Cooperative); Series 2018 B, Ref. PCR | 5.00% | 03/15/2042 | 790 | 820,632 | |
| Sarasota (County of), FL Public Hospital District (Sarasota Memorial Hospital); Series 2022, RB | 4.00% | 07/01/2052 | 1,575 | 1,406,623 | |
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Florida–(continued) | ||||||
| South Miami Health Facilities Authority, Inc. (Baptist Health South Florida Obligated Group); Series 2017, Ref. RB | 4.00% | 08/15/2047 | $ 765 | $ 708,021 | ||
| Sumter (County of), FL Industrial Development Authority (Central Florida Health Alliance); | ||||||
| Series 2014 A, RB | 5.00% | 07/01/2025 | 500 | 503,539 | ||
| Series 2014 A, RB | 5.00% | 07/01/2027 | 500 | 504,018 | ||
| Tallahassee (City of), FL (Tallahassee Memorial Health Care, Inc.); Series 2016, RB | 5.00% | 12/01/2055 | 1,270 | 1,254,147 | ||
| Tampa (City of), FL; Series 2020 A, RB(e) | 0.00% | 09/01/2049 | 3,140 | 852,486 | ||
| Tampa Bay (City of), FL Water; Series 2001 A, Ref. RB (INS - NATL)(d) | 6.00% | 10/01/2029 | 2,000 | 2,378,771 | ||
| 56,706,184 | ||||||
| Georgia–1.88% | ||||||
| Augusta (City of), GA Development Authority; Series 2018, RB | 4.00% | 07/01/2037 | 2,955 | 2,598,794 | ||
| Brookhaven Development Authority (Children’s Healthcare of Atlanta, Inc.); Series 2019 A, RB(g)(h) | 4.00% | 07/01/2044 | 4,345 | 4,250,845 | ||
| Gainesville (City of) & Hall (County of), GA Hospital Authority (Northeast Georgia Health System, Inc.); Series 2021 A, RB | 3.00% | 02/15/2051 | 475 | 341,143 | ||
| Main Street Natural Gas, Inc.; | ||||||
| Series 2021 A, RB(b) | 4.00% | 09/01/2027 | 1,265 | 1,259,757 | ||
| Series 2021 C, RB(b) | 4.00% | 12/01/2028 | 1,165 | 1,156,147 | ||
| Series 2022 C, RB(b)(c) | 4.00% | 11/01/2027 | 1,145 | 1,103,795 | ||
| 10,710,481 | ||||||
| Hawaii–0.35% | ||||||
| Hawaii (State of) Department of Budget & Finance (Hawaii Pacific Health Obligated Group); Series 2013 A, Ref. RB(f) | 5.50% | 07/01/2043 | 2,000 | 2,001,084 | ||
| Idaho–0.87% | ||||||
| Idaho (State of) Health Facilities Authority (Valley Vista Care Corp.); Series 2017 A, Ref. RB | 5.25% | 11/15/2047 | 1,700 | 1,235,515 | ||
| Idaho (State of) Housing & Finance Association; Series 2023 A, RB | 5.25% | 08/15/2048 | 2,305 | 2,572,798 | ||
| Spring Valley Community Infrastructure District No. 1; Series 2021, RB(c) | 3.75% | 09/01/2051 | 1,580 | 1,173,186 | ||
| 4,981,499 | ||||||
| Illinois–11.62% | ||||||
| Chicago (City of), IL; | ||||||
| Series 2002 B, GO Bonds | 5.50% | 01/01/2037 | 615 | 626,043 | ||
| Series 2005 D, Ref. GO Bonds | 5.50% | 01/01/2040 | 385 | 391,030 | ||
| Series 2007 E, Ref. GO Bonds | 5.50% | 01/01/2042 | 310 | 314,146 | ||
| Series 2012, RB(b)(f) | 5.00% | 06/12/2023 | 2,030 | 2,030,801 | ||
| Series 2014, RB | 5.00% | 11/01/2039 | 775 | 783,120 | ||
| Series 2015 A, GO Bonds | 5.50% | 01/01/2033 | 3,085 | 3,150,342 | ||
| Series 2017 A, Ref. GO Bonds | 6.00% | 01/01/2038 | 1,850 | 1,961,928 | ||
| Chicago (City of), IL (O’Hare International Airport); | ||||||
| Series 2015 C, RB(i) | 5.00% | 01/01/2046 | 775 | 776,665 | ||
| Series 2017 D, RB(i) | 5.00% | 01/01/2042 | 2,500 | 2,548,317 | ||
| Series 2017 D, RB | 5.25% | 01/01/2042 | 1,240 | 1,290,372 | ||
| Series 2022 A, RB (INS - AGM)(d)(i) | 5.50% | 01/01/2053 | 1,310 | 1,404,701 | ||
| Chicago (City of), IL Board of Education; | ||||||
| Series 2017 H, GO Bonds | 5.00% | 12/01/2046 | 910 | 879,488 | ||
| Series 2018 A, Ref. GO Bonds (INS - AGM)(d) | 5.00% | 12/01/2031 | 625 | 661,413 | ||
| Series 2018 C, Ref. GO Bonds | 5.00% | 12/01/2023 | 500 | 502,278 | ||
| Chicago (City of), IL Metropolitan Water Reclamation District (Green Bonds); Series 2021 A, GO Bonds | 4.00% | 12/01/2051 | 1,100 | 1,042,232 | ||
| Chicago (City of), IL Midway International Airport; Series 2014 A, Ref. RB(i) | 5.00% | 01/01/2041 | 1,125 | 1,125,918 | ||
| Chicago (City of), IL Park District; Series 2020 D, GO Bonds (INS - BAM)(d) | 4.00% | 01/01/2037 | 1,000 | 979,112 | ||
| Chicago (City of), IL Transit Authority; Series 2014, RB | 5.00% | 12/01/2044 | 3,070 | 3,094,852 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Illinois–(continued) | ||||||
| Illinois (State of); | ||||||
| First Series 2001, GO Bonds (INS - NATL)(d) | 6.00% | 11/01/2026 | $ 2,000 | $ 2,102,385 | ||
| Series 2013, GO Bonds (INS - AGM)(d) | 5.25% | 07/01/2029 | 1,960 | 1,963,466 | ||
| Series 2014, GO Bonds | 5.00% | 05/01/2029 | 1,000 | 1,009,627 | ||
| Series 2014, GO Bonds | 5.00% | 05/01/2036 | 750 | 754,719 | ||
| Series 2017 C, GO Bonds | 5.00% | 11/01/2029 | 250 | 266,017 | ||
| Series 2017 D, GO Bonds | 5.00% | 11/01/2024 | 295 | 300,159 | ||
| Series 2017 D, GO Bonds | 5.00% | 11/01/2026 | 4,655 | 4,886,919 | ||
| Series 2018 A, GO Bonds | 6.00% | 05/01/2027 | 725 | 793,991 | ||
| Series 2018 A, GO Bonds | 5.00% | 05/01/2030 | 1,115 | 1,194,813 | ||
| Series 2020, GO Bonds | 5.50% | 05/01/2039 | 985 | 1,075,722 | ||
| Illinois (State of) Development Finance Authority (CITGO Petroleum Corp.); Series 2002, RB(i) | 8.00% | 06/01/2032 | 340 | 340,279 | ||
| Illinois (State of) Finance Authority (Centegra Health System); Series 2014 A, RB(b)(f) | 5.00% | 09/01/2024 | 1,300 | 1,326,241 | ||
| Illinois (State of) Finance Authority (DePaul College Prep Foundation); Series 2023, Ref. RB(c) | 5.50% | 08/01/2043 | 530 | 534,887 | ||
| Illinois (State of) Finance Authority (Lutheran Communities Obligated Group); | ||||||
| Series 2019 A, Ref. RB | 5.00% | 11/01/2040 | 55 | 46,675 | ||
| Series 2019 A, Ref. RB | 5.00% | 11/01/2049 | 1,155 | 907,341 | ||
| Illinois (State of) Finance Authority (Mercy Health Corp.); Series 2016, Ref. RB | 5.00% | 12/01/2046 | 2,395 | 2,409,919 | ||
| Illinois (State of) Finance Authority (Peace Village); Series 2013, RB(b)(f) | 6.25% | 08/15/2023 | 1,000 | 1,004,575 | ||
| Illinois (State of) Finance Authority (Roosevelt University); Series 2019 A, RB(c) | 6.13% | 04/01/2058 | 790 | 725,974 | ||
| Illinois (State of) Finance Authority (Three Crowns Park); | ||||||
| Series 2017, Ref. RB | 4.00% | 02/15/2027 | 225 | 217,172 | ||
| Series 2017, Ref. RB | 5.25% | 02/15/2037 | 190 | 187,249 | ||
| Series 2017, Ref. RB | 5.25% | 02/15/2047 | 795 | 736,093 | ||
| Illinois (State of) Metropolitan Pier & Exposition Authority (McCormick Place Expansion); Series 2002, RB (INS - AGM)(d)(e) | 0.00% | 12/15/2029 | 2,500 | 1,947,020 | ||
| Illinois (State of) Municipal Electric Agency; Series 2015 A, Ref. RB | 4.00% | 02/01/2035 | 1,895 | 1,905,572 | ||
| Illinois (State of) Regional Transportation Authority; Series 2000, RB (INS - NATL)(d) | 6.50% | 07/01/2030 | 2,150 | 2,537,407 | ||
| Illinois (State of) Sports Facilities Authority; Series 2014, Ref. RB (INS - AGM)(d) | 5.00% | 06/15/2027 | 3,500 | 3,535,742 | ||
| Illinois (State of) Toll Highway Authority; Series 2013 A, RB(h) | 5.00% | 01/01/2038 | 10,050 | 10,059,543 | ||
| 66,332,265 | ||||||
| Indiana–1.02% | ||||||
| Indiana (State of) Finance Authority (KIPP Indianapolis, Inc.); Series 2020 A, RB | 5.00% | 07/01/2055 | 455 | 410,776 | ||
| Indiana (State of) Finance Authority (Ohio River Bridges East End Crossing); | ||||||
| Series 2013 A, RB(b)(f)(i) | 5.00% | 07/01/2023 | 500 | 500,534 | ||
| Series 2013, RB(b)(f)(i) | 5.00% | 07/01/2023 | 2,030 | 2,032,166 | ||
| Indiana (State of) Finance Authority (Ohio Valley Electrical Corp.); Series 2012 A, RB | 4.25% | 11/01/2030 | 1,575 | 1,545,494 | ||
| Indiana (State of) Finance Authority (US Steel Corp.); Series 2012, RB(i) | 5.75% | 08/01/2042 | 215 | 216,000 | ||
| Indiana (State of) Municipal Power Agency; Series 2013 A, RB(b)(f) | 5.25% | 07/01/2023 | 1,000 | 1,001,388 | ||
| Valparaiso (City of), IN (Pratt Paper, LLC); Series 2013, RB(i) | 5.88% | 01/01/2024 | 110 | 110,885 | ||
| 5,817,243 | ||||||
| Iowa–0.99% | ||||||
| Iowa (State of) Board of Regents (University of Iowa Hospital & Clinics); Series 2022 B, RB | 3.00% | 09/01/2056 | 1,530 | 1,100,600 | ||
| Iowa (State of) Finance Authority (Alcoa, Inc.); Series 2012, RB | 4.75% | 08/01/2042 | 395 | 377,262 | ||
| Iowa (State of) Finance Authority (Iowa Fertilizer Co.); Series 2022, Ref. RB(b) | 5.00% | 12/01/2042 | 2,575 | 2,604,075 | ||
| Iowa (State of) Finance Authority (Lifespace Communities, Inc.); Series 2016, RB | 5.00% | 05/15/2041 | 475 | 369,012 | ||
| Iowa (State of) Tobacco Settlement Authority; Series 2021 B-1, Ref. RB | 4.00% | 06/01/2049 | 1,200 | 1,175,089 | ||
| 5,626,038 | ||||||
| Kansas–0.40% | ||||||
| Wichita (City of), KS (Presbyterian Manors, Inc.); | ||||||
| Series 2013 IV-A, RB | 6.38% | 05/15/2043 | 1,500 | 1,487,408 | ||
| Series 2018 I, Ref. RB | 5.00% | 05/15/2047 | 1,000 | 799,579 | ||
| 2,286,987 | ||||||
| Kentucky–2.35% | ||||||
| Henderson (City of), KY (Pratt Paper LLC); Series 2022 A, RB(c)(i) | 4.70% | 01/01/2052 | 630 | 586,018 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Kentucky–(continued) | ||||||
| Kentucky (Commonwealth of) Economic Development Finance Authority (Catholic Health Initiatives); Series 2011 B, RB (SIFMA Municipal Swap Index + 1.40%)(b)(k) | 4.96% | 02/01/2025 | $ 670 | $ 670,965 | ||
| Kentucky (Commonwealth of) Economic Development Finance Authority (Next Generation Kentucky Information Highway); | ||||||
| Series 2015 A, RB | 5.00% | 07/01/2037 | 1,010 | 1,011,589 | ||
| Series 2015 A, RB | 5.00% | 07/01/2040 | 1,810 | 1,800,828 | ||
| Series 2015 A, RB | 5.00% | 01/01/2045 | 305 | 297,173 | ||
| Kentucky (Commonwealth of) Economic Development Finance Authority (Owensboro Health, Inc.); Series 2017 A, Ref. RB | 5.00% | 06/01/2045 | 935 | 910,855 | ||
| Kentucky (Commonwealth of) Municipal Power Agency (Prairie State); Series 2019 A, Ref. RB | 4.00% | 09/01/2045 | 1,350 | 1,201,828 | ||
| Kentucky Bond Development Corp.; Series 2020, RB (INS - BAM)(d)(g)(h) | 5.00% | 09/01/2044 | 3,640 | 3,905,429 | ||
| Louisville (City of) & Jefferson (County of), KY Metropolitan Government (Norton Healthcare, Inc.); Series 2013 A, RB | 5.50% | 10/01/2033 | 3,000 | 3,007,833 | ||
| 13,392,518 | ||||||
| Louisiana–0.32% | ||||||
| Louisiana (State of) Local Government Environmental Facilities & Community Development Authority (St. John the Baptist); Series 2019, RB(c) | 3.90% | 11/01/2044 | 840 | 723,327 | ||
| New Orleans (City of), LA Aviation Board; Series 2015 A, RB | 5.00% | 01/01/2045 | 1,120 | 1,131,162 | ||
| 1,854,489 | ||||||
| Maryland–0.84% | ||||||
| Howard (County of), MD (Downtown Columbia); | ||||||
| Series 2017 A, RB(c) | 4.38% | 02/15/2039 | 1,000 | 936,716 | ||
| Series 2017 A, RB(c) | 4.50% | 02/15/2047 | 500 | 450,075 | ||
| Maryland (State of) Health & Higher Educational Facilities Authority (LifeBridge Health); Series 2016, Ref. RB | 5.00% | 07/01/2047 | 705 | 712,214 | ||
| Maryland (State of) Health & Higher Educational Facilities Authority (Peninsula Regional Medical Center); Series 2015, Ref. RB(b)(f) | 5.00% | 07/01/2024 | 1,435 | 1,457,497 | ||
| Prince George’s (County of), MD (Collington Episcopal Life Care Community, Inc.); Series 2017, Ref. RB | 5.00% | 04/01/2028 | 670 | 644,918 | ||
| Rockville (City of), MD (Ingleside at King Farm); | ||||||
| Series 2017 B, RB | 4.25% | 11/01/2037 | 175 | 140,196 | ||
| Series 2017 B, RB | 5.00% | 11/01/2047 | 520 | 433,450 | ||
| 4,775,066 | ||||||
| Massachusetts–3.83% | ||||||
| Massachusetts (Commonwealth of) Bay Transportation Authority; Series 2023 A-1, RB | 5.25% | 07/01/2053 | 3,075 | 3,453,953 | ||
| Massachusetts (Commonwealth of) Bay Transportation Authority (Sustainability Bonds); Series 2022 A, Ref. RB | 5.00% | 07/01/2052 | 3,225 | 3,533,762 | ||
| Massachusetts (Commonwealth of) Development Finance Agency (Atrius Health); Series 2015, Ref. RB | 5.00% | 01/01/2041 | 1,100 | 1,104,785 | ||
| Massachusetts (Commonwealth of) Development Finance Agency (Boston Medical Center); Series 2023, Ref. RB | 5.25% | 07/01/2052 | 1,075 | 1,118,839 | ||
| Massachusetts (Commonwealth of) Port Authority; | ||||||
| Series 2019 A, Ref. RB(i) | 5.00% | 07/01/2036 | 1,000 | 1,061,654 | ||
| Series 2021 E, RB(i) | 5.00% | 07/01/2046 | 995 | 1,037,640 | ||
| University of Massachusetts Building Authority; Series 2022 1, RB | 5.00% | 11/01/2052 | 9,950 | 10,547,945 | ||
| 21,858,578 | ||||||
| Michigan–2.82% | ||||||
| Academy of Warren; Series 2020 A, RB(c) | 5.00% | 05/01/2035 | 290 | 256,496 | ||
| Detroit (City of), MI Downtown Development Authority (Catalyst Development); Series 2018 A, Ref. RB (INS - AGM)(d) | 5.00% | 07/01/2038 | 1,500 | 1,507,045 | ||
| Grand Rapids Economic Development Corp. (Beacon Hill at Eastgate); Series 2017 A, Ref. RB | 5.00% | 11/01/2047 | 700 | 545,361 | ||
| Lakeview Public School District; Series 2022, GO Bonds | 3.00% | 11/01/2034 | 305 | 284,516 | ||
| Michigan (State of) Building Authority (Facilities Program); Series 2016 I, RB(h) | 5.00% | 04/15/2041 | 2,655 | 2,766,826 | ||
| Michigan (State of) Finance Authority (Detroit Water & Sewerage Department); | ||||||
| Series 2014 C-6, Ref. RB | 5.00% | 07/01/2033 | 565 | 571,400 | ||
| Series 2014 D-4, Ref. RB | 5.00% | 07/01/2029 | 565 | 572,777 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Michigan–(continued) | ||||||
| Michigan (State of) Finance Authority (Landmark Academy); | ||||||
| Series 2020, Ref. RB | 5.00% | 06/01/2035 | $ 160 | $ 148,914 | ||
| Series 2020, Ref. RB | 5.00% | 06/01/2045 | 465 | 404,520 | ||
| Michigan (State of) Finance Authority (Trinity Health Credit Group); | ||||||
| Series 2017 MI, RB(f)(g)(h) | 5.00% | 12/01/2046 | 3,575 | 3,649,631 | ||
| Series 2017, Ref. RB | 4.00% | 12/01/2040 | 785 | 770,044 | ||
| Michigan (State of) Housing Development Authority; Series 2023 A, RB | 5.10% | 10/01/2053 | 1,780 | 1,831,969 | ||
| Michigan (State of) Strategic Fund (Canterbury Health Care, Inc.); Series 2016, RB(c) | 5.00% | 07/01/2026 | 490 | 450,898 | ||
| Michigan (State of) Strategic Fund (Green Bonds); Series 2021, RB(b)(i) | 4.00% | 10/01/2026 | 1,590 | 1,578,188 | ||
| Western Michigan University; | ||||||
| Series 2013, Ref. RB(b)(f) | 5.25% | 11/15/2023 | 400 | 403,367 | ||
| Series 2013, Ref. RB(b)(f) | 5.25% | 11/15/2023 | 350 | 352,946 | ||
| 16,094,898 | ||||||
| Minnesota–0.11% | ||||||
| Bethel (City of), MN (Spectrum High School); Series 2017 A, Ref. RB | 4.25% | 07/01/2047 | 425 | 324,215 | ||
| St. Paul (City of), MN Housing & Redevelopment Authority (Hope Community Academy); Series 2020, RB | 5.00% | 12/01/2055 | 400 | 325,182 | ||
| 649,397 | ||||||
| Mississippi–0.12% | ||||||
| Mississippi Business Finance Corp. (System Energy Resources, Inc.); Series 2021, RB | 2.38% | 06/01/2044 | 1,060 | 667,552 | ||
| Missouri–2.38% | ||||||
| Kansas City (City of), MO Industrial Development Authority (Downtown Redevelopment District); Series 2011 A, Ref. RB | 5.50% | 09/01/2028 | 1,970 | 1,973,660 | ||
| Kansas City (City of), MO Industrial Development Authority (Kansas City International Airport); | ||||||
| Series 2019 B, RB(i) | 5.00% | 03/01/2046 | 6,155 | 6,332,639 | ||
| Series 2019 B, RB (INS - AGM)(d)(i) | 5.00% | 03/01/2049 | 945 | 969,127 | ||
| Kirkwood (City of), MO Industrial Development Authority (Aberdeen Heights); Series 2017 A, Ref. RB | 5.25% | 05/15/2050 | 465 | 349,372 | ||
| Missouri (State of) Health & Educational Facilities Authority (Lutheran Senior Services); Series 2019, Ref. RB | 5.00% | 02/01/2048 | 330 | 298,369 | ||
| St. Louis (County of), MO Industrial Development Authority (Friendship Village of Sunset Hills); Series 2013 A, RB | 5.50% | 09/01/2033 | 1,375 | 1,375,730 | ||
| St. Louis (County of), MO Industrial Development Authority (Friendship Village West County); Series 2018 A, RB | 5.00% | 09/01/2038 | 1,740 | 1,580,531 | ||
| Taney (County of), MO Industrial Development Authority (Big Cedar Infrastructure); Series 2023, RB(c) | 6.00% | 10/01/2049 | 705 | 689,425 | ||
| 13,568,853 | ||||||
| Nebraska–1.56% | ||||||
| Omaha (City of), NE Public Power District; | ||||||
| Series 2022 A, RB | 5.25% | 02/01/2052 | 6,070 | 6,735,051 | ||
| Series 2022, RB(g)(h) | 5.25% | 02/01/2052 | 1,960 | 2,174,745 | ||
| 8,909,796 | ||||||
| New Hampshire–0.50% | ||||||
| New Hampshire (State of) Business Finance Authority; Series 2020-1A, RB | 4.13% | 01/20/2034 | 285 | 274,364 | ||
| New Hampshire (State of) Business Finance Authority (Social Bonds); Series 2022-1A, RB | 4.38% | 09/20/2036 | 1,557 | 1,502,110 | ||
| New Hampshire (State of) Health and Education Facilities Authority; Series 2020 A, RB | 5.00% | 08/01/2059 | 1,040 | 1,068,423 | ||
| 2,844,897 | ||||||
| New Jersey–5.29% | ||||||
| New Jersey (State of) Economic Development Authority; Series 2005 N-1, Ref. RB (INS - AMBAC)(d) | 5.50% | 09/01/2024 | 2,000 | 2,040,907 | ||
| New Jersey (State of) Economic Development Authority (Continental Airlines, Inc.); Series 1999, RB(i) | 5.13% | 09/15/2023 | 225 | 225,111 | ||
| New Jersey (State of) Economic Development Authority (Social Bonds); Series 2021, RB | 5.00% | 06/15/2033 | 950 | 1,050,513 | ||
| New Jersey (State of) Economic Development Authority (The Goethals Bridge Replacement); | ||||||
| Series 2013, RB(i) | 5.00% | 07/01/2023 | 1,750 | 1,751,064 | ||
| Series 2013, RB(i) | 5.50% | 01/01/2026 | 1,000 | 1,008,539 | ||
| Series 2013, RB(i) | 5.38% | 01/01/2043 | 1,230 | 1,233,655 | ||
| New Jersey (State of) Health Care Facilities Financing Authority (Inspira Health Obligated Group); Series 2017, RB | 4.00% | 07/01/2047 | 3,615 | 3,349,644 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| New Jersey–(continued) | ||||||
| New Jersey (State of) Transportation Trust Fund Authority; | ||||||
| Series 2006 C, RB (INS - AGC)(d)(e) | 0.00% | 12/15/2026 | $ 8,435 | $ 7,457,680 | ||
| Series 2014, RB | 5.00% | 06/15/2030 | 875 | 945,013 | ||
| Series 2018 A, Ref. RB | 5.00% | 12/15/2035 | 880 | 933,865 | ||
| Series 2018 A, RN(g)(h) | 5.00% | 06/15/2029 | 1,505 | 1,573,798 | ||
| Series 2018 A, RN(g)(h) | 5.00% | 06/15/2030 | 515 | 537,940 | ||
| Series 2022, RB | 5.25% | 06/15/2046 | 1,305 | 1,407,013 | ||
| Salem (County of), NJ Pollution Control Financing Authority (Chambers); Series 2014 A, PCR(f)(i) | 5.00% | 12/01/2023 | 530 | 530,171 | ||
| Tobacco Settlement Financing Corp.; | ||||||
| Series 2018 A, Ref. RB | 5.00% | 06/01/2046 | 2,765 | 2,834,122 | ||
| Series 2018 A, Ref. RB | 5.25% | 06/01/2046 | 1,575 | 1,638,984 | ||
| Series 2018 B, Ref. RB | 5.00% | 06/01/2046 | 1,685 | 1,693,127 | ||
| 30,211,146 | ||||||
| New Mexico–0.11% | ||||||
| Santa Fe (City of), NM (El Castillo Retirement); Series 2019 A, RB | 5.00% | 05/15/2049 | 800 | 651,312 | ||
| New York–18.72% | ||||||
| Erie Tobacco Asset Securitization Corp.; Series 2005 A, RB | 5.00% | 06/01/2045 | 2,460 | 2,242,767 | ||
| Hudson Yards Infrastructure Corp.; | ||||||
| Series 2017 A, Ref. RB | 4.00% | 02/15/2044 | 2,380 | 2,335,446 | ||
| Series 2017 A, Ref. RB (INS - AGM)(d) | 4.00% | 02/15/2047 | 755 | 739,281 | ||
| Metropolitan Transportation Authority; Series 2013 B, RB | 5.00% | 11/15/2038 | 1,680 | 1,680,240 | ||
| Metropolitan Transportation Authority (Bidding Group 1); Series 2022 A, RB | 4.00% | 11/15/2043 | 735 | 715,104 | ||
| Metropolitan Transportation Authority (Green Bonds); | ||||||
| Series 2017 C-1, Ref. RB | 5.00% | 11/15/2023 | 570 | 572,723 | ||
| Series 2017 C-1, Ref. RB | 4.00% | 11/15/2038 | 550 | 532,694 | ||
| Series 2020 A-1, RB (INS - AGM)(d) | 4.00% | 11/15/2041 | 1,915 | 1,885,417 | ||
| Series 2020 C-1, RB | 5.25% | 11/15/2055 | 1,270 | 1,311,582 | ||
| New York & New Jersey (States of) Port Authority; Series 2020 221, RB(i) | 4.00% | 07/15/2055 | 2,200 | 2,017,077 | ||
| New York (City of), NY; | ||||||
| Series 2020 C, GO Bonds | 5.00% | 08/01/2043 | 2,340 | 2,514,504 | ||
| Subseries 2022 B-1, GO Bonds | 5.25% | 10/01/2047 | 1,415 | 1,572,684 | ||
| Subseries 2022 D-1, GO Bonds(h) | 5.25% | 05/01/2038 | 1,275 | 1,456,173 | ||
| Subseries 2022 D-1, GO Bonds(h) | 5.25% | 05/01/2042 | 2,165 | 2,426,586 | ||
| New York (City of), NY Industrial Development Agency (Queens Baseball Stadium); Series 2021 A, Ref. RB (INS - AGM)(d) | 3.00% | 01/01/2046 | 2,380 | 1,828,415 | ||
| New York (City of), NY Municipal Water Finance Authority; | ||||||
| Series 2013 DD, RB(b)(f) | 5.00% | 06/15/2023 | 2,900 | 2,901,595 | ||
| Series 2020 BB-1, RB | 4.00% | 06/15/2050 | 1,575 | 1,535,241 | ||
| Series 2022, RB(h) | 5.00% | 06/15/2051 | 4,795 | 5,141,358 | ||
| New York (City of), NY Transitional Finance Authority; | ||||||
| Series 2019 B-1, RB | 4.00% | 11/01/2045 | 810 | 794,866 | ||
| Series 2020, RB | 4.00% | 05/01/2040 | 2,300 | 2,293,129 | ||
| Series 2023 F-1, RB | 4.00% | 02/01/2051 | 2,315 | 2,242,419 | ||
| New York (State of) Dormitory Authority; Series 2022, RB(h) | 4.00% | 03/15/2046 | 5,000 | 4,901,173 | ||
| New York (State of) Dormitory Authority (City of New York); Series 2005 A, RB (INS - AMBAC)(d) | 5.50% | 05/15/2029 | 1,805 | 2,048,688 | ||
| New York (State of) Dormitory Authority (Memorial Sloan Kettering Cancer); Series 2022 1-B, RB | 4.00% | 07/01/2051 | 3,425 | 3,193,619 | ||
| New York (State of) Power Authority; Series 2020 A, RB(h) | 4.00% | 11/15/2045 | 3,500 | 3,464,924 | ||
| New York (State of) Power Authority (Green Bonds); Series 2020, RB(h) | 4.00% | 11/15/2055 | 3,930 | 3,771,954 | ||
| New York (State of) Thruway Authority; | ||||||
| Series 2019 B, RB | 4.00% | 01/01/2050 | 5,110 | 4,845,619 | ||
| Series 2019 B, RB (INS - AGM)(d)(g)(h) | 4.00% | 01/01/2050 | 2,490 | 2,398,056 | ||
| New York (State of) Thruway Authority (Group 3); Series 2021 A-1, Ref. RB | 4.00% | 03/15/2046 | 2,355 | 2,311,865 | ||
| New York Counties Tobacco Trust IV; Series 2005 A, RB | 5.00% | 06/01/2045 | 265 | 239,144 | ||
| New York Counties Tobacco Trust V; Series 2005 S-2, RB(e) | 0.00% | 06/01/2050 | 10,140 | 1,404,350 | ||
| New York Counties Tobacco Trust VI; Series 2016 A-1, Ref. RB | 5.75% | 06/01/2043 | 2,995 | 3,100,482 | ||
| New York Liberty Development Corp. (3 World Trade Center); Series 2014, Class 1, Ref. RB(c) | 5.00% | 11/15/2044 | 5,230 | 5,135,362 | ||
| New York State Urban Development Corp. (Bidding Group 3); Series 2021 A, Ref. RB | 4.00% | 03/15/2045 | 3,160 | 3,106,378 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| New York–(continued) | ||||||
| New York Transportation Development Corp. (American Airlines, Inc. John F. Kennedy International Airport); | ||||||
| Series 2020, Ref. RB(i) | 5.25% | 08/01/2031 | $ 540 | $ 556,958 | ||
| Series 2020, Ref. RB(i) | 5.38% | 08/01/2036 | 900 | 908,716 | ||
| New York Transportation Development Corp. (American Airlines, Inc.); | ||||||
| Series 2016, Ref. RB(i) | 5.00% | 08/01/2026 | 1,265 | 1,266,561 | ||
| Series 2016, Ref. RB(i) | 5.00% | 08/01/2031 | 1,270 | 1,271,724 | ||
| New York Transportation Development Corp. (Delta Air Lines, Inc. LaGuardia Airport Terminals C&D Redevelopment); | ||||||
| Series 2018, RB(i) | 5.00% | 01/01/2033 | 1,980 | 2,041,894 | ||
| Series 2018, RB(i) | 5.00% | 01/01/2034 | 955 | 983,341 | ||
| Series 2018, RB(i) | 5.00% | 01/01/2036 | 315 | 321,120 | ||
| Series 2020, RB(i) | 5.00% | 10/01/2040 | 1,905 | 1,930,174 | ||
| Series 2020, RB(i) | 4.38% | 10/01/2045 | 1,110 | 1,053,022 | ||
| New York Transportation Development Corp. (LaGuardia Airport Terminal B Redevelopment); | ||||||
| Series 2016 A, RB(i) | 5.00% | 07/01/2046 | 2,985 | 2,907,355 | ||
| Series 2016 A, RB(i) | 5.25% | 01/01/2050 | 1,620 | 1,613,886 | ||
| New York Transportation Development Corp. (Terminal 4 JFK International Airport); Series 2022, RB(i) | 5.00% | 12/01/2038 | 1,200 | 1,252,632 | ||
| Onondaga (County of), NY Trust for Cultural Resources (Syracuse University); Series 2019, Ref. RB | 4.00% | 12/01/2047 | 710 | 688,903 | ||
| Rockland Tobacco Asset Securitization Corp.; Series 2001, RB | 5.75% | 08/15/2043 | 1,500 | 1,524,812 | ||
| Triborough Bridge & Tunnel Authority (MTA Bridges & Tunnels); | ||||||
| Series 2020 A, RB | 5.00% | 11/15/2049 | 710 | 757,254 | ||
| Series 2021 A, RB | 5.00% | 11/15/2056 | 1,065 | 1,126,590 | ||
| Series 2022, RB(h) | 5.00% | 05/15/2051 | 5,175 | 5,534,540 | ||
| TSASC, Inc.; Series 2016 B, Ref. RB | 5.00% | 06/01/2045 | 2,615 | 2,455,680 | ||
| 106,856,077 | ||||||
| North Carolina–0.67% | ||||||
| Charlotte (City of), NC (Charlotte Douglas International Airport); | ||||||
| Series 2017 A, RB | 5.00% | 07/01/2047 | 1,900 | 1,967,320 | ||
| Series 2022, RB | 4.00% | 07/01/2047 | 830 | 806,407 | ||
| North Carolina (State of) Department of Transportation (I-77 HOT Lanes); Series 2015, RB(i) | 5.00% | 06/30/2054 | 1,115 | 1,072,657 | ||
| 3,846,384 | ||||||
| North Dakota–0.54% | ||||||
| Ward (County of), ND (Trinity Obligated Group); | ||||||
| Series 2017 C, RB | 5.00% | 06/01/2048 | 2,210 | 1,782,043 | ||
| Series 2017 C, RB | 5.00% | 06/01/2053 | 1,645 | 1,282,134 | ||
| 3,064,177 | ||||||
| Ohio–4.66% | ||||||
| Akron, Bath & Copley Joint Township Hospital District (Summa Health Obligated Group); Series 2016, Ref. RB | 5.25% | 11/15/2046 | 775 | 783,637 | ||
| American Municipal Power, Inc. (Greenup Hydroelectric); Series 2016 A, RB | 4.00% | 02/15/2036 | 1,000 | 1,000,536 | ||
| Buckeye Tobacco Settlement Financing Authority; | ||||||
| Series 2020 A-2, Ref. RB | 4.00% | 06/01/2039 | 445 | 422,744 | ||
| Series 2020 A-2, Ref. RB | 4.00% | 06/01/2048 | 5,070 | 4,503,461 | ||
| Series 2020 B-2, Ref. RB | 5.00% | 06/01/2055 | 7,405 | 6,860,785 | ||
| Series 2020 B-3, Ref. RB(e) | 0.00% | 06/01/2057 | 8,155 | 908,683 | ||
| Cleveland (City of) & Cuyahoga (County of), OH Port Authority (Constellation Schools); Series 2014 A, Ref. RB(c) | 6.50% | 01/01/2034 | 1,000 | 1,001,787 | ||
| Columbus (City of) & Franklin (County of), OH Finance Authority (Easton); Series 2020, RB(c) | 5.00% | 06/01/2028 | 605 | 604,475 | ||
| Cuyahoga (County of), OH (MetroHealth System); | ||||||
| Series 2017, Ref. RB | 5.25% | 02/15/2047 | 625 | 631,049 | ||
| Series 2017, Ref. RB | 5.50% | 02/15/2052 | 1,555 | 1,579,493 | ||
| Series 2017, Ref. RB | 5.00% | 02/15/2057 | 1,875 | 1,784,432 | ||
| Franklin (County of), OH (Nationwide Children’s Hospital); Series 2019, RB | 5.00% | 11/01/2048 | 1,290 | 1,413,021 | ||
| Hamilton (County of), OH (Life Enriching Communities); Series 2016, Ref. RB | 5.00% | 01/01/2046 | 1,370 | 1,194,056 | ||
| Montgomery (County of), OH (Trousdale Foundation Properties); Series 2018 A, RB (Acquired 08/29/2018; Cost $1,396,479)(c)(l) | 6.00% | 04/01/2038 | 1,425 | 498,750 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | ||
| Ohio–(continued) | |||||
| Muskingum (County of), OH (Genesis Healthcare System); Series 2013, RB | 5.00% | 02/15/2044 | $ 865 | $ 773,983 | |
| Ohio (State of) (University Hospitals Health System, Inc.); Series 2020 A, Ref. RB | 4.00% | 01/15/2050 | 2,370 | 2,107,454 | |
| Ohio (State of) Air Quality Development Authority (Pratt Paper LLC); Series 2017, RB(c)(i) | 4.25% | 01/15/2038 | 555 | 527,652 | |
| 26,595,998 | |||||
| Oklahoma–0.76% | |||||
| Oklahoma (State of) Development Finance Authority (OU Medicine); | |||||
| Series 2018 B, RB | 5.50% | 08/15/2052 | 3,585 | 3,276,655 | |
| Series 2018 B, RB | 5.50% | 08/15/2057 | 1,170 | 1,055,851 | |
| Oklahoma (State of) Development Finance Authority (Provident Oklahoma Education Resources, Inc.-Cross Village Student Housing); Series 2017, RB(m) | 5.00% | 08/01/2052 | 1,785 | 1,785 | |
| 4,334,291 | |||||
| Ontario–0.13% | |||||
| Affordable Housing Tax-Exempt Bond Pass-Thru Trust; Series 2023, RB(c) | 6.00% | 10/05/2040 | 770 | 770,000 | |
| Oregon–1.18% | |||||
| Clackamas (County of), OR Hospital Facility Authority (Rose Villa); Series 2020 A, Ref. RB | 5.38% | 11/15/2055 | 475 | 437,201 | |
| Oregon (State of); Series 2019, GO Bonds(g)(h) | 5.00% | 08/01/2044 | 3,140 | 3,380,002 | |
| Portland (Port of), OR (Green Bonds); Twenty Ninth Series 2023, RB(i) | 5.50% | 07/01/2048 | 1,305 | 1,426,287 | |
| Portland (Port of), OR (Portland International Airport); Series 2022 28, RB(i) | 5.00% | 07/01/2052 | 1,465 | 1,513,975 | |
| 6,757,465 | |||||
| Pennsylvania–3.00% | |||||
| Allegheny (County of), PA Hospital Development Authority (Allegheny Health Network Obligated Group Issue); Series 2018 A, Ref. RB | 4.00% | 04/01/2044 | 2,755 | 2,468,276 | |
| Pennsylvania (Commonwealth of) Economic Development Financing Authority; Series 2023 A-2, RB | 4.00% | 05/15/2048 | 500 | 465,520 | |
| Pennsylvania (Commonwealth of) Economic Development Financing Authority (Penndot Major Bridges); | |||||
| Series 2022, RB(i) | 5.25% | 06/30/2053 | 1,845 | 1,892,408 | |
| Series 2022, RB (INS - AGM)(d)(i) | 5.00% | 12/31/2057 | 925 | 946,423 | |
| Pennsylvania (Commonwealth of) Turnpike Commission; Series 2021 A, RB | 4.00% | 12/01/2050 | 1,180 | 1,097,536 | |
| Pennsylvania Higher Education Assistance Agency (Senior Bonds); | |||||
| Series 2023 A, RB(i) | 5.00% | 06/01/2029 | 455 | 481,394 | |
| Series 2023 A, RB(i) | 5.00% | 06/01/2030 | 625 | 668,547 | |
| Series 2023 A, RB(i) | 5.00% | 06/01/2031 | 685 | 735,407 | |
| Series 2023 A, RB(i) | 5.00% | 06/01/2032 | 800 | 861,545 | |
| Philadelphia (City of), PA; | |||||
| Series 2017 B, Ref. RB(i) | 5.00% | 07/01/2042 | 3,855 | 3,930,378 | |
| Series 2017 B, Ref. RB(i) | 5.00% | 07/01/2047 | 375 | 380,392 | |
| Series 2021, Ref. RB (INS - AGM)(d)(i) | 4.00% | 07/01/2041 | 1,200 | 1,143,626 | |
| Philadelphia (City of), PA Authority for Industrial Development (St. Joseph’s University); Series 2022, RB | 5.50% | 11/01/2060 | 1,570 | 1,684,499 | |
| Philadelphia (City of), PA Authority for Industrial Development (String Theory Charter School); Series 2020, Ref. RB(c) | 5.00% | 06/15/2050 | 385 | 365,847 | |
| 17,121,798 | |||||
| Puerto Rico–5.84% | |||||
| Children’s Trust Fund; | |||||
| Series 2002, RB | 5.50% | 05/15/2039 | 2,860 | 2,860,119 | |
| Series 2002, RB | 5.63% | 05/15/2043 | 1,740 | 1,749,875 | |
| Series 2005 A, RB(e) | 0.00% | 05/15/2050 | 5,450 | 972,010 | |
| Series 2005 B, RB(e) | 0.00% | 05/15/2055 | 2,390 | 245,576 | |
| Series 2008 A, RB(e) | 0.00% | 05/15/2057 | 14,090 | 950,775 | |
| Series 2008 B, RB(e) | 0.00% | 05/15/2057 | 35,570 | 1,970,774 | |
| Puerto Rico (Commonwealth of); | |||||
| Series 2021 A-1, GO Bonds | 5.63% | 07/01/2027 | 1,100 | 1,151,042 | |
| Subseries 2022, RN | 0.00% | 11/01/2043 | 1,451 | 709,095 | |
| Subseries 2022, RN | 0.00% | 11/01/2051 | 3,266 | 1,579,845 | |
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Puerto Rico–(continued) | ||||||
| Puerto Rico (Commonwealth of) Electric Power Authority; | ||||||
| Series 2003 NN, RB (INS - NATL)(d) | 4.75% | 07/01/2033 | $ 850 | $ 828,703 | ||
| Series 2007 VV, Ref. RB (INS - NATL)(d) | 5.25% | 07/01/2032 | 1,270 | 1,255,193 | ||
| Series 2007 VV, Ref. RB (INS - NATL)(d) | 5.25% | 07/01/2033 | 690 | 684,484 | ||
| Series 2007 VV, Ref. RB (INS - NATL)(d) | 5.25% | 07/01/2035 | 610 | 599,276 | ||
| Puerto Rico (Commonwealth of) Highway & Transportation Authority; Series 2022 A, RB | 5.00% | 07/01/2062 | 1,540 | 1,480,325 | ||
| Puerto Rico Sales Tax Financing Corp.; | ||||||
| Series 2018 A-1, RB(e) | 0.00% | 07/01/2029 | 1,355 | 1,038,698 | ||
| Series 2018 A-1, RB(e) | 0.00% | 07/01/2033 | 2,330 | 1,457,290 | ||
| Series 2018 A-1, RB(e) | 0.00% | 07/01/2046 | 7,840 | 2,118,750 | ||
| Series 2018 A-1, RB(e) | 0.00% | 07/01/2051 | 10,320 | 2,055,243 | ||
| Series 2018 A-1, RB | 4.75% | 07/01/2053 | 1,730 | 1,604,159 | ||
| Series 2018 A-1, RB | 5.00% | 07/01/2058 | 6,830 | 6,542,782 | ||
| Series 2019 A-2, RB | 4.33% | 07/01/2040 | 1,560 | 1,449,132 | ||
| 33,303,146 | ||||||
| Rhode Island–0.35% | ||||||
| Tobacco Settlement Financing Corp.; Series 2015 B, Ref. RB | 5.00% | 06/01/2050 | 2,035 | 1,998,899 | ||
| South Carolina–1.26% | ||||||
| South Carolina (State of) Jobs-Economic Development Authority (Palmetto Health Alliance); Series 2013 A, Ref. RB(b)(f) | 5.25% | 08/01/2023 | 1,400 | 1,404,006 | ||
| South Carolina (State of) Ports Authority; Series 2015, RB(b)(f)(i) | 5.25% | 07/01/2025 | 1,020 | 1,051,334 | ||
| South Carolina (State of) Public Service Authority; | ||||||
| Series 2013 E, Ref. RB | 5.50% | 12/01/2053 | 3,595 | 3,605,652 | ||
| Series 2014 C, Ref. RB | 5.00% | 12/01/2046 | 1,120 | 1,121,686 | ||
| 7,182,678 | ||||||
| South Dakota–0.17% | ||||||
| South Dakota (State of) Health & Educational Facilities Authority (Sanford Obligated Group); Series 2014 B, RB | 5.00% | 11/01/2044 | 940 | 946,907 | ||
| Tennessee–2.62% | ||||||
| Chattanooga (City of), TN Health, Educational & Housing Facility Board (CommonSpirit Health); Series 2019 A-2, Ref. RB | 5.00% | 08/01/2049 | 1,185 | 1,208,226 | ||
| Greeneville (Town of), TN Health & Educational Facilities Board (Ballad Health Obligated Group); Series 2018 A, Ref. RB | 5.00% | 07/01/2037 | 1,855 | 1,928,294 | ||
| Knox (County of), TN & Knoxville (City of), TN Sports Authority (Multi-Use Stadium); Series 2023 A, RB | 6.00% | 12/01/2054 | 1,905 | 2,188,326 | ||
| Knoxville (City of), TN; Series 2022 OO, RB | 4.00% | 07/01/2052 | 2,895 | 2,753,385 | ||
| Memphis (City of) & Shelby (County of), TN Airport Authority; Series 2018, RB(i) | 5.00% | 07/01/2043 | 1,230 | 1,265,469 | ||
| Metropolitan Nashville Airport Authority (The); Series 2019 B, RB(i) | 5.00% | 07/01/2054 | 535 | 548,150 | ||
| Tennessee Energy Acquisition Corp.; | ||||||
| Series 2006 A, RB | 5.25% | 09/01/2023 | 1,280 | 1,282,829 | ||
| Series 2006 A, RB | 5.25% | 09/01/2026 | 1,275 | 1,297,520 | ||
| Series 2021 A, RB(b) | 5.00% | 11/01/2031 | 2,365 | 2,471,238 | ||
| 14,943,437 | ||||||
| Texas–21.39% | ||||||
| Alamo Community College District; Series 2012, GO Bonds(h) | 5.00% | 08/15/2034 | 5,105 | 5,110,448 | ||
| Austin (City of), TX; | ||||||
| Series 2023, Ref. RB | 5.00% | 11/15/2039 | 1,075 | 1,212,505 | ||
| Series 2023, Ref. RB | 5.25% | 11/15/2053 | 1,995 | 2,208,302 | ||
| Central Texas Regional Mobility Authority; Series 2021 B, RB | 5.00% | 01/01/2046 | 635 | 667,061 | ||
| Clifton Higher Education Finance Corp. (Idea Public Schools); Series 2021 T, RB (CEP - Texas Permanent School Fund) | 4.00% | 08/15/2050 | 1,280 | 1,190,013 | ||
| Clifton Higher Education Finance Corp. (International Leadership of Texas); Series 2018 D, RB | 5.75% | 08/15/2033 | 1,580 | 1,602,978 | ||
| Dallas & Fort Worth (Cities of), TX (Dallas/Fort Worth International Airport); Series 2014 A, Ref. RB(i) | 5.25% | 11/01/2026 | 2,000 | 2,008,088 | ||
| Denton (County of), TX; Series 2023, Ref. GO Bonds | 4.00% | 07/15/2048 | 3,880 | 3,690,226 | ||
| El Paso (City of), TX; Series 2022 A, RB | 4.00% | 03/01/2048 | 2,875 | 2,714,612 | ||
| Greater Texoma Utility Authority (City of Sherman); Series 2023, RB (INS - AGM)(d) | 4.25% | 10/01/2053 | 1,305 | 1,243,710 | ||
| Harris (County of), TX; Series 2007 C, Ref. GO Bonds (INS - AGM)(d) | 5.25% | 08/15/2031 | 5,395 | 6,357,287 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | ||
| Texas–(continued) | |||||
| Harris (County of), TX Port Authority of Houston; Series 2021, RB | 4.00% | 10/01/2046 | $ 1,020 | $ 977,919 | |
| Harris (County of), TX Toll Road Authority (The); Series 2021, Ref. RB | 4.00% | 08/15/2050 | 1,220 | 1,145,542 | |
| Harris County Industrial Development Corp. (Energy Transfer L.P.); Series 2023, Ref. RB(b) | 4.05% | 06/01/2033 | 1,230 | 1,235,233 | |
| Houston (City of), TX Airport System (United Airlines, Inc. Terminal E); | |||||
| Series 2014, Ref. RB(i) | 4.75% | 07/01/2024 | 775 | 775,282 | |
| Series 2021 A, RB(i) | 4.00% | 07/01/2041 | 555 | 484,625 | |
| Houston (City of), TX Airport System (United Airlines, Inc.); Series 2018, RB(i) | 5.00% | 07/15/2028 | 500 | 506,809 | |
| Houston (City of), TX Convention & Entertainment Facilities Department; Series 2001 B, RB (INS - AGM)(d)(e) | 0.00% | 09/01/2025 | 4,650 | 4,259,130 | |
| La Vernia Higher Education Finance Corp. (Meridian World School); Series 2015 A, RB(b)(c)(f) | 5.50% | 08/15/2024 | 1,205 | 1,232,603 | |
| Lower Colorado River Authority (LCRA Transmission Services Corp.); Series 2022, Ref. RB | 5.50% | 05/15/2047 | 1,100 | 1,216,286 | |
| Mission Economic Development Corp. (Natgasoline); Series 2018, Ref. RB(c)(i) | 4.63% | 10/01/2031 | 2,935 | 2,845,016 | |
| Montgomery Independent School District; | |||||
| Series 2023, GO Bonds (CEP - Texas Permanent School Fund) | 4.00% | 02/15/2048 | 810 | 789,041 | |
| Series 2023, GO Bonds (CEP - Texas Permanent School Fund) | 4.00% | 02/15/2053 | 1,940 | 1,860,831 | |
| New Hope Cultural Education Facilities Finance Corp. (4-K Housing, Inc.-Stoney Brook); Series 2017 A-1, RB(m) | 4.75% | 07/01/2052 | 750 | 510,000 | |
| New Hope Cultural Education Facilities Finance Corp. (Carillon Lifecare Community); Series 2016, Ref. RB | 5.00% | 07/01/2046 | 1,380 | 987,550 | |
| New Hope Cultural Education Facilities Finance Corp. (CHF-Collegiate Housing College Station I, LLC - Texas A&M University); Series 2014 A, RB (INS - AGM)(d) | 5.00% | 04/01/2046 | 1,130 | 1,133,439 | |
| New Hope Cultural Education Facilities Finance Corp. (Collegiate Housing Stephenville II, LLC - Tarleton State University); Series 2014 A, RB(b)(f) | 5.00% | 04/01/2024 | 1,000 | 1,011,867 | |
| New Hope Cultural Education Facilities Finance Corp. (Jubilee Academic Center); Series 2021, Ref. RB(c) | 4.00% | 08/15/2051 | 1,165 | 852,393 | |
| New Hope Cultural Education Facilities Finance Corp. (Presbyterian Village North); | |||||
| Series 2018, Ref. RB | 5.00% | 10/01/2032 | 205 | 192,029 | |
| Series 2018, Ref. RB | 5.00% | 10/01/2033 | 1,280 | 1,187,982 | |
| Series 2020, RB | 5.25% | 10/01/2055 | 2,380 | 1,844,156 | |
| North Texas Tollway Authority; | |||||
| Series 2008 D, Ref. RB (INS - AGC)(d)(e) | 0.00% | 01/01/2028 | 18,900 | 16,127,153 | |
| Series 2008 D, Ref. RB (INS - AGC)(d)(e) | 0.00% | 01/01/2031 | 3,740 | 2,853,861 | |
| San Antonio (City of), TX; | |||||
| Series 2023 A, Ref. RB | 5.25% | 02/01/2046 | 1,605 | 1,773,997 | |
| Series 2023 A, Ref. RB | 5.50% | 02/01/2050 | 1,190 | 1,348,151 | |
| Spring Independent School District; Series 2023, GO Bonds | 4.00% | 08/15/2052 | 5,000 | 4,730,655 | |
| Tarrant (County of), TX; Series 2022, GO Bonds(h) | 4.00% | 07/15/2047 | 10,500 | 10,093,122 | |
| Tarrant (County of), TX Hospital District; Series 2023, GO Bonds | 4.25% | 08/15/2053 | 3,065 | 3,015,487 | |
| Tarrant County Cultural Education Facilities Finance Corp.; Series 2016 A, Ref. RB(h) | 5.00% | 02/15/2047 | 3,260 | 3,326,576 | |
| Tarrant County Cultural Education Facilities Finance Corp. (Air Force Village Obligated Group); | |||||
| Series 2016, Ref. RB | 5.00% | 05/15/2037 | 1,735 | 1,552,850 | |
| Series 2016, Ref. RB | 5.00% | 05/15/2045 | 1,510 | 1,248,585 | |
| Tarrant County Cultural Education Facilities Finance Corp. (C.C. Young Memorial Home); Series 2017 A, RB(m) | 6.38% | 02/15/2048 | 1,765 | 970,750 | |
| Tarrant County Cultural Education Facilities Finance Corp. (MRC Stevenson Oaks); | |||||
| Series 2020, Ref. RB | 6.63% | 11/15/2041 | 80 | 74,569 | |
| Series 2020, Ref. RB | 6.75% | 11/15/2051 | 80 | 72,035 | |
| Series 2020, Ref. RB | 6.88% | 11/15/2055 | 80 | 72,600 | |
| Temple (City of), TX; Series 2018 A, RB | 5.00% | 08/01/2028 | 660 | 669,538 | |
| Texas (State of) Transportation Commission; Series 2019, RB(e) | 0.00% | 08/01/2041 | 2,000 | 768,106 | |
| Texas (State of) Transportation Commission (Central Texas Turnpike System); | |||||
| Series 2015 B, Ref. RB(e) | 0.00% | 08/15/2036 | 3,170 | 1,699,609 | |
| Series 2015 B, Ref. RB(e) | 0.00% | 08/15/2037 | 970 | 491,984 | |
| Series 2015 C, Ref. RB | 5.00% | 08/15/2042 | 5,215 | 5,236,996 | |
| Texas City Independent School District; Series 2023, GO Bonds (CEP - Texas Permanent School Fund) | 4.00% | 08/15/2053 | 1,305 | 1,259,150 | |
| Texas Municipal Gas Acquisition & Supply Corp. I; Series 2008 D, RB | 6.25% | 12/15/2026 | 2,880 | 2,993,366 | |
| Texas Private Activity Bond Surface Transportation Corp. (Blueridge Transportation Group, LLC SH 288 Toll Lanes); Series 2016, RB(i) | 5.00% | 12/31/2055 | 1,050 | 1,017,339 | |
| Texas Private Activity Bond Surface Transportation Corp. (NTE Mobility Partners Segments 3 LLC Segments 3A and 3B Facility); Series 2013, RB(i) | 7.00% | 12/31/2038 | 1,300 | 1,308,768 | |
| Interest Rate | Maturity Date | Principal Amount (000) | Value | |||
| Texas–(continued) | ||||||
| Texas Water Development Board; Series 2022, RB(h) | 5.00% | 10/15/2047 | $ 3,140 | $ 3,445,377 | ||
| Travis County Cultural Education Facilities Finance Corp. (Wayside Schools); Series 2012 A, RB | 5.25% | 08/15/2042 | 5 | 4,756 | ||
| Waller Consolidated Independent School District; Series 2023, GO Bonds (INS - BAM)(d) | 4.00% | 02/15/2053 | 3,075 | 2,865,927 | ||
| 122,074,270 | ||||||
| Utah–0.52% | ||||||
| Black Desert Public Infrastructure District; Series 2021 A, GO Bonds(c) | 4.00% | 03/01/2051 | 500 | 375,434 | ||
| Military Installation Development Authority; Series 2021 A-2, RB | 4.00% | 06/01/2052 | 500 | 359,928 | ||
| Salt Lake City (City of), UT; | ||||||
| Series 2021 A, RB(i) | 5.00% | 07/01/2046 | 795 | 825,776 | ||
| Series 2021 A, RB(i) | 5.00% | 07/01/2051 | 425 | 438,600 | ||
| Utah (State of) Charter School Finance Authority (Ogden Preparatory Academy); Series 2022 A, Ref. RB | 4.63% | 10/15/2057 | 1,000 | 954,640 | ||
| 2,954,378 | ||||||
| Virginia–1.37% | ||||||
| Peninsula Town Center Community Development Authority; Series 2018, Ref. RB(c) | 5.00% | 09/01/2045 | 305 | 282,590 | ||
| Roanoke (City of), VA Economic Development Authority (Richfield Living); Series 2020, RB(m) | 5.00% | 09/01/2050 | 300 | 187,356 | ||
| Virginia (Commonwealth of) Small Business Financing Authority (95 Express Lanes LLC); Series 2022, Ref. RB(i) | 4.00% | 01/01/2040 | 3,200 | 2,928,597 | ||
| Virginia (Commonwealth of) Small Business Financing Authority (I-495 Hot Lanes); | ||||||
| Series 2022, Ref. RB(i) | 5.00% | 12/31/2052 | 505 | 509,726 | ||
| Series 2022, Ref. RB(i) | 5.00% | 12/31/2057 | 1,535 | 1,543,199 | ||
| Virginia (Commonwealth of) Small Business Financing Authority (Transform 66 P3); | ||||||
| Series 2017, RB(i) | 5.00% | 12/31/2049 | 405 | 402,978 | ||
| Series 2017, RB(i) | 5.00% | 12/31/2056 | 2,010 | 1,977,766 | ||
| 7,832,212 | ||||||
| Washington–2.05% | ||||||
| City of Tacoma WA Sewer Revenue; Series 2023, RB(h) | 4.00% | 12/01/2047 | 2,630 | 2,536,230 | ||
| Kalispel Tribe of Indians; Series 2018 B, RB(c) | 5.25% | 01/01/2038 | 1,000 | 1,028,512 | ||
| Seattle (Port of), WA; Series 2022 B, Ref. RB(i) | 5.50% | 08/01/2047 | 500 | 541,537 | ||
| Washington (State of); Series 2019 A, GO Bonds(h) | 5.00% | 08/01/2042 | 1,770 | 1,885,785 | ||
| Washington (State of) Convention Center Public Facilities District; | ||||||
| Series 2018, RB | 5.00% | 07/01/2048 | 790 | 791,695 | ||
| Series 2018, RB | 5.00% | 07/01/2048 | 3,285 | 3,314,065 | ||
| Washington (State of) Housing Finance Commission (Bayview Manor Homes); | ||||||
| Series 2016 A, Ref. RB(c) | 5.00% | 07/01/2046 | 415 | 319,462 | ||
| Series 2016 A, Ref. RB(c) | 5.00% | 07/01/2051 | 340 | 253,922 | ||
| Washington (State of) Housing Finance Commission (Social Certificates); Series 2021-1A, Revenue Ctfs. | 3.50% | 12/20/2035 | 1,112 | 1,017,598 | ||
| 11,688,806 | ||||||
| West Virginia–0.43% | ||||||
| Monongalia (County of), WV Commission Special District (University Town Centre Economic Opportunity Development District); Series 2020, Ref. RB(c) | 7.50% | 06/01/2043 | 795 | 859,579 | ||
| West Virginia (State of) Hospital Finance Authority (West Virginia University Health System Obligated Group); Series 2023, RB | 4.25% | 06/01/2047 | 1,635 | 1,585,110 | ||
| 2,444,689 | ||||||
| Wisconsin–5.48% | ||||||
| Wisconsin (State of) Center District; | ||||||
| Series 2020 D, RB (INS - AGM)(d)(e) | 0.00% | 12/15/2050 | 6,130 | 1,554,100 | ||
| Series 2020 D, RB (INS - AGM)(d)(e) | 0.00% | 12/15/2060 | 27,975 | 4,165,170 | ||
| Series 2022, RB(c) | 5.25% | 12/15/2061 | 1,605 | 1,605,079 | ||
| Wisconsin (State of) Health & Educational Facilities Authority (Aspirus, Inc. Obligated Group); | ||||||
| Series 2021, RB | 3.00% | 08/15/2051 | 790 | 546,002 | ||
| Series 2021, RB | 4.00% | 08/15/2051 | 2,640 | 2,314,486 | ||
| Wisconsin (State of) Health & Educational Facilities Authority (Froedtert Health); Series 2022 A, Ref. RB | 4.00% | 04/01/2042 | 2,365 | 2,186,026 | ||
| Interest Rate | Maturity Date | Principal Amount (000) | Value | ||
| Wisconsin–(continued) | |||||
| Wisconsin (State of) Health & Educational Facilities Authority (Medical College of Wisconsin); Series 2022, Ref. RB | 4.00% | 12/01/2051 | $ 1,410 | $ 1,281,454 | |
| Wisconsin (State of) Health & Educational Facilities Authority (Mercy Alliance); Series 2012, RB | 5.00% | 06/01/2039 | 3,500 | 3,463,497 | |
| Wisconsin (State of) Health & Educational Facilities Authority (Mile Bluff Medical Center, Inc.); | |||||
| Series 2014, RB | 5.00% | 05/01/2026 | 1,100 | 1,063,849 | |
| Series 2014, RB | 5.13% | 05/01/2029 | 1,000 | 964,874 | |
| Wisconsin (State of) Public Finance Authority; Series 2022, RB(c) | 6.00% | 06/01/2062 | 785 | 764,264 | |
| Wisconsin (State of) Public Finance Authority (American Dream at Meadowlands); | |||||
| Series 2017, RB(c)(m) | 6.75% | 08/01/2031 | 865 | 562,250 | |
| Series 2017, RB(c) | 6.75% | 12/01/2042 | 2,015 | 1,734,784 | |
| Wisconsin (State of) Public Finance Authority (Explore Academy); | |||||
| Series 2020 A, RB(c) | 6.13% | 02/01/2050 | 400 | 346,337 | |
| Series 2022 A, RB(c) | 6.13% | 02/01/2050 | 435 | 376,642 | |
| Wisconsin (State of) Public Finance Authority (KU Campus Development Corp. Central District Development); Series 2016, RB | 5.00% | 03/01/2046 | 3,375 | 3,403,140 | |
| Wisconsin (State of) Public Finance Authority (Mallard Creek Stem Academy); Series 2019 A, RB(c) | 5.13% | 06/15/2039 | 620 | 593,512 | |
| Wisconsin (State of) Public Finance Authority (Maryland Proton Treatment Center); Series 2018 A-1, RB(c) | 6.38% | 01/01/2048 | 615 | 378,225 | |
| Wisconsin (State of) Public Finance Authority (Prime Healthcare Foundation, Inc.); | |||||
| Series 2018 A, RB | 5.20% | 12/01/2037 | 1,585 | 1,609,953 | |
| Series 2018 A, RB | 5.35% | 12/01/2045 | 1,585 | 1,575,076 | |
| Wisconsin (State of) Public Finance Authority (Roseman University of Health Sciences); Series 2015, Ref. RB | 5.75% | 04/01/2035 | 795 | 813,764 | |
| 31,302,484 | |||||
| Wyoming–0.38% | |||||
| Wyoming (State of) Municipal Power Agency; Series 2017 A, Ref. RB(b)(f)(h) | 5.00% | 01/01/2027 | 2,020 | 2,149,197 | |
| Total Municipal Obligations (Cost $875,493,824) | 873,168,356 | ||||
| Shares | |||||
| Exchange-Traded Funds–0.08% | |||||
| Invesco Municipal Strategic Income ETF (Cost $466,846)(n) | 9,163 | 457,936 | |||
| TOTAL INVESTMENTS IN SECURITIES(o)–153.07% (Cost $875,960,670) | 873,626,292 | ||||
| FLOATING RATE NOTE OBLIGATIONS–(15.01)% | |||||
| Notes with interest and fee rates ranging from 3.45% to 4.55% at 05/31/2023 and contractual maturities of collateral ranging from 06/15/2029 to 04/01/2056(p) | (85,685,000) | ||||
| VARIABLE RATE MUNI TERM PREFERRED SHARES–(36.87)% | (210,434,801) | ||||
| OTHER ASSETS LESS LIABILITIES–(1.19)% | (6,776,168) | ||||
| NET ASSETS APPLICABLE TO COMMON SHARES–100.00% | $570,730,323 | ||||
| AGC | – Assured Guaranty Corp. |
| AGM | – Assured Guaranty Municipal Corp. |
| AMBAC | – American Municipal Bond Assurance Corp. |
| BAM | – Build America Mutual Assurance Co. |
| CEP | – Credit Enhancement Provider |
| Ctfs. | – Certificates |
| ETF | – Exchange-Traded Fund |
| FHLMC | – Federal Home Loan Mortgage Corp. |
| GO | – General Obligation |
| IDR | – Industrial Development Revenue Bonds |
| INS | – Insurer |
| NATL | – National Public Finance Guarantee Corp. |
| PCR | – Pollution Control Revenue Bonds |
| RB | – Revenue Bonds |
| Ref. | – Refunding |
| RN | – Revenue Notes |
| SIFMA | – Securities Industry and Financial Markets Association |
| (a) | Calculated as a percentage of net assets. Amounts in excess of 100% are due to the Trust’s use of leverage. |
| (b) | Security has an irrevocable call by the issuer or mandatory put by the holder. Maturity date reflects such call or put. |
| (c) | Security purchased or received in a transaction exempt from registration under the Securities Act of 1933, as amended (the “1933 Act”). The security may be resold pursuant to an exemption from registration under the 1933 Act, typically to qualified institutional buyers. The aggregate value of these securities at May 31, 2023 was $51,699,889, which represented 9.06% of the Trust’s Net Assets. |
| (d) | Principal and/or interest payments are secured by the bond insurance company listed. |
| (e) | Zero coupon bond issued at a discount. |
| (f) | Advance refunded; secured by an escrow fund of U.S. Government obligations or other highly rated collateral. |
| (g) | Security is subject to a reimbursement agreement which may require the Trust to pay amounts to a counterparty in the event of a significant decline in the market value of the security underlying the TOB Trusts. In case of a shortfall, the maximum potential amount of payments the Trust could ultimately be required to make under the agreement is $25,955,000. However, such shortfall payment would be reduced by the proceeds from the sale of the security underlying the TOB Trusts. |
| (h) | Underlying security related to TOB Trusts entered into by the Trust. |
| (i) | Security subject to the alternative minimum tax. |
| (j) | Convertible capital appreciation bond. The interest rate shown represents the coupon rate at which the bond will accrue at a specified future date. |
| (k) | Interest or dividend rate is redetermined periodically. Rate shown is the rate in effect on May 31, 2023. |
| (l) | Restricted security. The value of this security at May 31, 2023 represented less than 1% of the Trust’s Net Assets. |
| (m) | Defaulted security. Currently, the issuer is in default with respect to principal and/or interest payments. The aggregate value of these securities at May 31, 2023 was $2,232,141, which represented less than 1% of the Trust’s Net Assets. |
| (n) | Affiliated issuer. The issuer and/or the Trust is a wholly-owned subsidiary of Invesco Ltd., or is affiliated by having an investment adviser that is under common control of Invesco Ltd. The table below shows the Trust’s transactions in, and earnings from, its investments in affiliates for the three months ended May 31, 2023. |
| Value February 28, 2023 | Purchases at Cost | Proceeds from Sales | Change in Unrealized Appreciation | Realized Gain | Value May 31, 2023 | Dividend Income | |
| Invesco Municipal Strategic Income ETF | $456,276 | $- | $- | $1,660 | $- | $457,936 | $4,686 |
| (o) | This table provides a listing of those entities that have either issued, guaranteed, backed or otherwise enhanced the credit quality of more than 5% of the securities held in the portfolio. In instances where the entity has guaranteed, backed or otherwise enhanced the credit quality of a security, it is not primarily responsible for the issuer’s obligations but may be called upon to satisfy the issuer’s obligations. |
| Entity | Percent |
| Assured Guaranty Municipal Corp. | 5.46% |
| (p) | Floating rate note obligations related to securities held. The interest and fee rates shown reflect the rates in effect at May 31, 2023. At May 31, 2023, the Trust’s investments with a value of $126,614,746 are held by TOB Trusts and serve as collateral for the $85,685,000 in the floating rate note obligations outstanding at that date. |
| Level 1 | Level 2 | Level 3 | Total | |
| Investments in Securities | ||||
| Municipal Obligations | $— | $873,168,356 | $— | $873,168,356 |
| Exchange-Traded Funds | 457,936 | — | — | 457,936 |
| Total Investments | $457,936 | $873,168,356 | $— | $873,626,292 |