NPORT-EX 2 NPORT_LCQD_2151399684.htm

BlackRock MuniHoldings Fund

Schedule of Investments  (unaudited)  July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Municipal Bonds
Alabama — 1.1%
County of Jefferson Alabama Sewer Revenue, Refunding RB
Series A, Senior Lien, (AGM), 5.00%, 10/01/44		$	570			$	630,221
Series A, Senior Lien, (AGM), 5.25%, 10/01/48			1,090				1,209,137
Series D, Sub Lien, 6.00%, 10/01/42			2,875				3,288,799
Series D, Sub Lien, 7.00%, 10/01/51			1,545				1,801,609
Health Care Authority of the City of Huntsville, RB
Series B1, 4.00%, 06/01/45			315				372,881
Series B1, (AGM), 3.00%, 06/01/50			865				930,653
Opelika Utilities Board, Refunding RB, 4.00%, 06/01/41			960				1,109,232
Selma Industrial Development Board, RB, Series A, 5.38%, 12/01/35			900				914,211
							10,256,743
Alaska — 0.2%
Northern Tobacco Securitization Corp., Refunding RB, Series A, Class 1, 4.00%, 06/01/50			1,890				2,239,763
Arizona — 3.0%
Arizona Health Facilities Authority, Refunding RB, Series A, 5.00%, 02/01/42			2,200				2,250,160
Arizona Industrial Development Authority, RB 4.38%, 07/01/39(a)			575				641,574
Series A, 5.00%, 07/01/39(a)			480				513,312
Series A, (BAM), 4.00%, 06/01/44			425				486,289
Series A, 5.00%, 07/01/49(a)			550				581,235
Series A, 5.00%, 07/01/54(a)			425				447,606
Arizona Industrial Development Authority, Refunding RB(a)
Series A, 5.50%, 07/01/52			130				141,423
Series G, 5.00%, 07/01/47			435				504,335
City of Phoenix Civic Improvement Corp., ARB,
Series B, AMT, Junior Lien, 3.25%, 07/01/49			670				711,198
Glendale Industrial Development Authority, RB 5.00%, 05/15/41			65				75,256
5.00%, 05/15/56			575				652,671
Industrial Development Authority of the City of Phoenix, RB, Series A, 5.00%, 07/01/46(a)			2,120				2,369,990
Industrial Development Authority of the County of Pima, RB(a)
5.00%, 07/01/34			400				436,496
5.00%, 06/15/47			840				858,262
Industrial Development Authority of the County of Pima, Refunding RB, 5.00%, 06/15/52(a)			260				275,426
Maricopa County Industrial Development Authority, Refunding RB
5.00%, 07/01/39(a)			215				259,473
5.00%, 07/01/54(a)			490				571,007
Series A, 4.13%, 09/01/38			775				912,508
Maricopa County Pollution Control Corp., Refunding RB, Series B, 3.60%, 04/01/40			1,400				1,561,518
Salt Verde Financial Corp., RB 5.00%, 12/01/32			3,500				4,671,380
5.00%, 12/01/37			6,845				9,767,130
							28,688,249
Arkansas — 1.1%
Arkansas Development Finance Authority, RB 5.00%, 12/01/47			385				486,609

Security		Par (000)				Value
Arkansas (continued)
Arkansas Development Finance Authority, RB (continued)
Series A, AMT, 4.50%, 09/01/49(a)		$	4,925			$	5,538,015
City of Benton Arkansas, RB, (AGM), 4.00%, 06/01/39			505				553,738
City of Fort Smith Arkansas Water & Sewer Revenue, Refunding RB, Subordinate, 4.00%, 10/01/40			840				938,473
City of Little Rock Arkansas, RB, 4.00%, 07/01/41			1,835				1,996,865
Pulaski County Public Facilities Board, RB, 5.00%, 12/01/42			465				530,891
							10,044,591
California — 8.7%
California Educational Facilities Authority, RB, Series V-1, 5.00%, 05/01/49			1,545				2,502,514
California Health Facilities Financing Authority, Refunding RB
Series A, 5.00%, 07/01/33			1,320				1,438,840
Series A, 4.00%, 04/01/45			1,030				1,221,106
California Municipal Finance Authority, ARB, AMT, Senior Lien, 5.00%, 12/31/43			800				980,200
California Municipal Finance Authority, RB, S/F Housing
Series A, 5.25%, 08/15/39			185				201,709
Series A, 5.25%, 08/15/49			460				497,297
California Municipal Finance Authority, Refunding RB, Series A, 5.00%, 02/01/42			285				345,942
California Pollution Control Financing Authority, RB, Series A, AMT, 5.00%, 11/21/45(a)			1,755				1,826,323
California State Public Works Board, RB
Series F, 5.25%, 09/01/33			1,230				1,356,112
Series I, 5.50%, 11/01/30			2,500				2,791,750
Series I, 5.50%, 11/01/31			3,965				4,427,834
Series I, 5.00%, 11/01/38			955				1,052,916
California Statewide Communities Development Authority, Refunding RB
4.00%, 03/01/42			1,000				1,170,130
4.00%, 03/01/48			1,345				1,559,581
Carlsbad Unified School District, GO, Series B, 6.00%, 05/01/34			1,000				1,152,610
City of Los Angeles Department of Airports, Refunding ARB
Series A, AMT, 5.00%, 05/15/31			245				330,375
Series A, AMT, 5.00%, 05/15/32			295				396,079
Series A, AMT, 5.00%, 05/15/33			290				387,370
Series A, AMT, 5.00%, 05/15/38			210				276,234
Series A, AMT, 5.00%, 05/15/39			225				295,654
Golden State Tobacco Securitization Corp., Refunding RB
Series A-1, 5.00%, 06/01/47			2,335				2,413,479
Series A-2, 5.00%, 06/01/47			4,350				4,496,203
Hartnell Community College District, GO, CAB, Series D, 7.00%, 08/01/34(b)			1,650				2,154,603
Kern Community College District, GO, Series C, 5.50%, 11/01/23(c)			2,445				2,738,278
Montebello Unified School District, GO, CAB, (NPFGC), 0.00%, 08/01/22(d)			2,405				2,396,919
Norwalk-La Mirada Unified School District, Refunding GO, CAB, Series E, (AGC), 0.00%, 08/01/38(d)			8,000				5,280,240
Palomar Community College District, GO, CAB Series B, 0.00%, 08/01/30(d)			1,500				1,360,710

S C H E D U L E    O F    I N V E S T M E N  T S 1

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
California (continued)
Palomar Community College District, GO, CAB (continued)
Series B, Convertible, 6.20%, 08/01/39(b)		$	2,605			$	3,347,712
Redondo Beach Unified School District, GO, Series E, 5.50%, 08/01/21(c)			1,335				1,335,000
Regents of the University of California Medical Center Pooled Revenue, Refunding RB
Series J, 5.25%, 05/15/23(c)			5,005				5,461,806
Series J, 5.25%, 05/15/38			1,420				1,544,165
Riverside County Public Financing Authority, RB, 5.25%, 11/01/40			2,500				2,978,300
Riverside County Redevelopment Successor Agency, Refunding, TA, Series A, (BAM), 4.00%, 10/01/39			1,550				1,798,217
San Diego Community College District, GO, CAB, 6.00%, 08/01/33			2,800				3,670,296
San Diego County Regional Airport Authority, ARB, Series B, AMT, 5.00%, 07/01/47			1,405				1,697,971
San Diego Unified School District, GO, CAB(d)
Series A, 0.00%, 07/01/29			5,315				4,858,123
Series A, 0.00%, 07/01/29(e)			685				622,179
San Francisco City & County Airport Comm-San Francisco International Airport, Refunding ARB
Series A, AMT, 5.50%, 05/01/28			1,085				1,182,173
Series A, AMT, 5.25%, 05/01/33			850				920,924
Series A, AMT, 5.00%, 05/01/44			1,090				1,217,203
State of California, Refunding GO 5.00%, 02/01/38			3,000				3,212,550
3.00%, 12/01/46			1,395				1,529,213
Stockton Public Financing Authority, RB, Series A, 6.25%, 10/01/23(c)			440				498,432
Washington Township Health Care District, GO, Series B, 5.50%, 08/01/40			920				1,054,743
							81,980,015
Colorado — 1.9%
Arapahoe County School District No.6 Littleton, GO, Series A, (SAW), 5.50%, 12/01/43			1,260				1,662,860
City & County of Denver Colorado Airport System Revenue, ARB
Series B, 5.25%, 11/15/32			3,250				3,619,688
Series A, AMT, 5.50%, 11/15/28			1,000				1,116,770
Series A, AMT, 5.50%, 11/15/30			340				379,297
Series A, AMT, 5.50%, 11/15/31			405				451,571
City & County of Denver Colorado, RB, CAB(d)
Series A-2, 0.00%, 08/01/37			1,490				906,307
Series A-2, 0.00%, 08/01/38			915				527,735
Colorado Educational & Cultural Facilities Authority, RB (ST HGR ED INTERCEPT PROG), 5.50%, 07/01/40			2,510				2,518,258
5.00%, 03/01/50(a)			360				401,054
Colorado Educational & Cultural Facilities Authority, Refunding RB, Class A, 5.00%, 10/01/59(a)			1,690				1,895,268
Colorado Health Facilities Authority, Refunding RB
Series A, 4.00%, 08/01/44			1,285				1,489,765
Series A, 3.25%, 08/01/49			1,415				1,520,630

Security		Par (000)				Value
Colorado (continued)
Denver International Business Center Metropolitan District No.1, GO, Series A, 4.00%, 12/01/48		$	555			$	575,152
State of Colorado, COP, Series O, 4.00%, 03/15/44			930				1,090,220
							18,154,575
Connecticut — 0.7%
Connecticut State Health & Educational Facilities Authority, Refunding RB, Series I-1, 5.00%, 07/01/42			590				705,174
State of Connecticut Special Tax Revenue, RB
Series A, 4.00%, 05/01/36			240				292,260
Series A, 4.00%, 05/01/39			150				181,551
State of Connecticut, GO
Series A, 4.00%, 01/15/38			2,260				2,734,826
Series A, 5.00%, 04/15/38			985				1,235,072
State of Connecticut, Refunding GO, Series E, 5.00%, 09/15/37			970				1,230,745
							6,379,628
Delaware — 0.7%
County of Kent Delaware, RB
Series A, 5.00%, 07/01/40			330				381,533
Series A, 5.00%, 07/01/48			900				1,024,623
Delaware State Health Facilities Authority, RB 5.00%, 06/01/43			820				1,022,942
5.00%, 06/01/48			1,395				1,724,499
Delaware Transportation Authority, RB, 5.00%, 06/01/55			1,790				2,066,036
							6,219,633
District of Columbia — 3.4%
District of Columbia, Refunding RB 5.00%, 04/01/35			315				384,801
5.00%, 10/01/48			1,695				2,069,002
District of Columbia, TA, 5.13%, 06/01/41			1,520				1,525,107
Metropolitan Washington Airports Authority Aviation Revenue, Refunding ARB
Series A, AMT, 4.00%, 10/01/37			955				1,173,886
Series A, AMT, 4.00%, 10/01/38			955				1,171,011
Series A, AMT, 4.00%, 10/01/39			1,410				1,720,045
Series A, AMT, 4.00%, 10/01/40			1,150				1,400,033
Series A, AMT, 4.00%, 10/01/41			1,060				1,284,465
Metropolitan Washington Airports Authority Dulles Toll Road Revenue, Refunding RB
Series A, 5.00%, 10/01/53			1,475				1,516,890
Series B, Subordinate, 4.00%, 10/01/49			1,255				1,444,254
Metropolitan Washington Airports Authority Dulles Toll Road Revenue, Refunding RB, CAB(d)
Series B, 2nd Senior Lien, (AGC), 0.00%, 10/01/34			10,170				8,058,810
Series B, 2nd Senior Lien, (AGC), 0.00%, 10/01/35			13,485				10,381,832
							32,130,136
Florida — 7.3%
Capital Projects Finance Authority, RB
Series A-1, 5.00%, 10/01/32			140				177,642
Series A-1, 5.00%, 10/01/33			155				196,022
Series A-1, 5.00%, 10/01/34			155				195,181
Series A-1, 5.00%, 10/01/35			50				62,748

2

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Florida (continued)
Capital Trust Agency, Inc., RB
Series A, 5.00%, 06/01/45(a)		$	480			$	515,981
Series A, 5.00%, 12/15/49			160				182,525
Series A, 5.00%, 12/15/54			140				159,382
Central Florida Expressway Authority, Refunding RB, Senior Lien, 5.00%, 07/01/48			2,760				3,439,843
City of Jacksonville Florida, RB, Series A, 5.25%, 10/01/21(c)			4,525				4,562,286
City of Pompano Beach Florida, Refunding RB, 4.00%, 09/01/50			420				463,239
City of Tampa Florida, RB, CAB(d)
Series A, 0.00%, 09/01/49			285				104,609
Series A, 0.00%, 09/01/53			300				91,929
Collier County Health Facilities Authority, Refunding RB, Series A, 5.00%, 05/01/45			1,755				1,992,802
County of Broward Florida Airport System Revenue, ARB, Series A, AMT, 5.00%, 10/01/45			2,845				3,286,117
County of Broward Florida Port Facilities Revenue, ARB, Series B, AMT, 4.00%, 09/01/49			1,070				1,228,841
County of Lee Florida Airport Revenue, Refunding RB, Series A, AMT, 5.38%, 10/01/32			1,500				1,502,595
County of Miami-Dade Florida Aviation Revenue, Refunding RB
Series A, 4.00%, 10/01/37			235				284,399
Series A, 4.00%, 10/01/38			235				284,059
Series A, 4.00%, 10/01/39			175				211,194
Series A, AMT, 5.00%, 10/01/22(c)			2,900				3,057,325
County of Miami-Dade Seaport Department, ARB
Series A, 5.38%, 10/01/33			1,015				1,125,148
Series A, 6.00%, 10/01/38			5,215				5,835,898
Series B, AMT, 6.00%, 10/01/31			4,135				4,624,253
Series B, AMT, 6.25%, 10/01/38			460				514,883
Series B, AMT, 6.00%, 10/01/42			615				686,795
County of Osceola Florida Transportation Revenue, Refunding RB, CAB(d)
Series A-2, 0.00%, 10/01/41			275				151,756
Series A-2, 0.00%, 10/01/42			370				196,111
Series A-2, 0.00%, 10/01/43			335				170,448
Series A-2, 0.00%, 10/01/44			345				168,933
Series A-2, 0.00%, 10/01/45			285				134,378
Series A-2, 0.00%, 10/01/46			625				283,356
Series A-2, 0.00%, 10/01/47			605				263,750
Series A-2, 0.00%, 10/01/48			430				180,338
Series A-2, 0.00%, 10/01/49			355				143,274
County of Sarasota Florida Utility System Revenue, RB
Series A, 5.00%, 10/01/45			310				402,144
Series A, 5.00%, 10/01/50			465				597,576
Cypress Bluff Community Development District, SAB, Series A, 3.80%, 05/01/50(a)			430				443,274
Escambia County Health Facilities Authority, Refunding RB, 4.00%, 08/15/45			1,725				2,015,990
Esplanade Lake Club Community Development District, SAB, Series A-1, 4.13%, 11/01/50			615				652,945
Florida Development Finance Corp., RB(a)
Series A, 5.00%, 06/15/40			155				180,722
Series A, 5.00%, 06/15/50			520				595,566
Series A, 5.00%, 06/15/55			310				354,231
AMT, 5.00%, 05/01/29			270				290,361
Series A, AMT, 5.00%, 08/01/29(f)			105				108,586

Security		Par (000)				Value
Florida (continued)
Florida Development Finance Corp., Refunding RB, Series C, 5.00%, 09/15/50(a)		$	270			$	300,318
Florida Housing Finance Corp., RB, S/F Housing, 1st Series, (FHLMC, FNMA, GNMA), 3.75%, 07/01/42			270				290,615
Hillsborough County Aviation Authority, Refunding RB, Sub-Series A, AMT, 5.50%, 10/01/29			1,735				1,926,076
Lee County Housing Finance Authority, RB, S/F Housing, Series A-2, AMT, (FHLMC, FNMA, GNMA), 6.00%, 09/01/40			60				60,204
Miami-Dade County Educational Facilities Authority, Refunding RB, Series A, 5.00%, 04/01/40			3,465				3,976,711
Mid-Bay Bridge Authority, RB, Series A, 7.25%, 10/01/21(c)			3,620				3,661,775
Orange County Health Facilities Authority, Refunding RB, 5.00%, 08/01/41			1,305				1,440,394
Palm Beach County Health Facilities Authority, RB, Series B, 5.00%, 11/15/42			210				260,415
Palm Beach County Health Facilities Authority, Refunding RB, 4.00%, 08/15/49			1,185				1,404,355
Reedy Creek Improvement District, GO, Series A, 5.25%, 06/01/23(c)			1,785				1,951,701
Southern Groves Community Development District No.5, Refunding SAB, 4.00%, 05/01/43			220				233,666
Stevens Plantation Community Development District, SAB, Series A, 7.10%, 05/01/35(g)(h)			800				506,893
Tohopekaliga Water Authority, Refunding RB, Series A, 5.25%, 10/01/21(c)			3,995				4,028,158
Trout Creek Community Development District, SAB 4.00%, 05/01/40			635				676,440
4.00%, 05/01/51			1,055				1,101,420
Village Community Development District No.10, SAB, 5.13%, 05/01/43			2,360				2,442,883
Volusia County Educational Facility Authority, Refunding RB, 5.00%, 10/15/49			1,265				1,598,454
Westside Community Development District, SAB, 4.00%, 05/01/50			815				876,141
							68,856,054
Georgia — 2.7%
Development Authority for Fulton County, RB, 4.00%, 06/15/49.			470				547,653
Gainesville & Hall County Hospital Authority, Refunding RB, Series A, (GTD), 5.50%, 08/15/54			640				743,629
George L Smith II Congress Center Authority, RB, 4.00%, 01/01/54			990				1,155,191
Georgia Housing & Finance Authority, RB, S/F Housing
Series A, 3.95%, 12/01/43			120				126,767
Series A, 4.00%, 12/01/48			170				178,900
Series B, 2.50%, 06/01/50			520				530,197
Griffin-Spalding County Hospital Authority, RB, 4.00%, 04/01/42			2,310				2,628,549
Main Street Natural Gas, Inc., RB
Series A, 5.00%, 05/15/35			360				505,364
Series A, 5.00%, 05/15/36			1,860				2,644,325
Series A, 5.00%, 05/15/37			400				576,052
Series A, 5.00%, 05/15/38			1,265				1,847,861
Series A, 5.00%, 05/15/43			330				405,313
Series A, 5.00%, 05/15/49			4,575				7,230,284
Municipal Electric Authority of Georgia, RB 5.00%, 01/01/48			835				1,006,025

S C H E D U L E    O F    I N V E S T  M E N T S 3

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Georgia (continued)
Municipal Electric Authority of Georgia, RB (continued) 4.00%, 01/01/49		$	2,105			$	2,388,582
5.00%, 01/01/56			350				426,769
4.00%, 01/01/59			1,335				1,521,553
Municipal Electric Authority of Georgia, Refunding RB,
Sub-Series A, 4.00%, 01/01/49			700				800,758
							25,263,772
Hawaii — 0.3%
State of Hawaii Airports System Revenue, ARB, Series A, AMT, 5.00%, 07/01/45			1,500				1,731,495
State of Hawaii Airports System Revenue, COP
AMT, 5.25%, 08/01/25			425				466,042
AMT, 5.25%, 08/01/26			460				504,284
State of Hawaii Department of Budget & Finance, Refunding RB, 5.25%, 11/15/37			400				422,224
							3,124,045
Idaho — 0.4%
Idaho Health Facilities Authority, RB 4.00%, 12/01/43			670				797,046
Series 2017, 5.00%, 12/01/46			540				666,025
Series A, 5.00%, 03/01/39			500				554,665
Power County Industrial Development Corp., RB, AMT, 6.45%, 08/01/32			2,000				2,007,840
							4,025,576
Illinois — 11.5%
Chicago Board of Education, GO
Series A, 5.00%, 12/01/36			985				1,277,210
Series A, 5.00%, 12/01/38			610				787,303
Series A, 5.00%, 12/01/40			730				937,050
Series A, 5.00%, 12/01/41			480				614,563
Series C, 5.25%, 12/01/35			2,655				2,996,592
Series D, 5.00%, 12/01/46			3,480				3,877,050
Series H, 5.00%, 12/01/36			585				712,717
Series H, 5.00%, 12/01/46			240				287,182
Chicago Board of Education, Refunding GO
Series C, 5.00%, 12/01/25			1,120				1,317,893
Series C, 5.00%, 12/01/27			500				621,535
Series C, 5.00%, 12/01/30			605				747,375
Series C, 5.00%, 12/01/34			475				583,970
Series D, 5.00%, 12/01/25			435				511,825
Series F, 5.00%, 12/01/22			455				481,868
Series F, 5.00%, 12/01/23			310				341,220
Series F, 5.00%, 12/01/24			340				387,682
Series G, 5.00%, 12/01/34			315				387,264
Chicago Midway International Airport, Refunding ARB, Series A, AMT, 2nd Lien, 5.00%, 01/01/41			1,870				2,057,598
Chicago O’Hare International Airport, ARB, Series D, AMT, Senior Lien, 5.00%, 01/01/42			430				511,657
Chicago O’Hare International Airport, Refunding RB
Series B, AMT, 4.00%, 01/01/29			1,600				1,626,080
Series A, Senior Lien, 4.00%, 01/01/37			675				812,997
Chicago Transit Authority Sales Tax Receipts Fund, RB, 5.25%, 12/01/21(c)			10,900				11,079,741
City of Chicago Illinois Special Assessment Revenue, SAB, 6.75%, 12/01/32			1,429				1,432,515
City of Chicago Illinois Wastewater Transmission Revenue, RB, 2nd Lien, 5.00%, 01/01/42			3,530				3,585,209

Security		Par (000)				Value
Illinois (continued)
City of Chicago Illinois Waterworks Revenue, Refunding RB, 2nd Lien, 5.00%, 11/01/42		$	1,000			$	1,054,920
Cook County Community College District No. 508, GO 5.50%, 12/01/38			3,075				3,360,575
5.25%, 12/01/43			2,935				3,181,364
County of Will Illinois, GO, 5.00%, 11/15/25(c)			600				717,594
Illinois Finance Authority, RB
Series A, 5.00%, 02/15/37			820				948,986
Series A, 6.00%, 08/15/41			1,885				1,888,695
Series A, 5.00%, 02/15/47			240				271,022
Series A, 5.00%, 02/15/50			130				146,158
Illinois Finance Authority, Refunding RB 4.00%, 03/01/35			1,290				1,473,103
Series A, 5.00%, 11/15/45			1,205				1,407,790
Series C, 5.00%, 02/15/41			555				667,782
Illinois State Toll Highway Authority, RB
Series A, 5.00%, 01/01/40			2,980				3,479,031
Series A, 5.00%, 01/01/45			930				1,202,304
Series C, 5.00%, 01/01/37			2,000				2,300,780
Metropolitan Pier & Exposition Authority, RB, Series A, 5.00%, 06/15/57			2,370				2,844,332
Metropolitan Pier & Exposition Authority, Refunding RB, 4.00%, 06/15/50			2,550				2,952,645
Metropolitan Pier & Exposition Authority, Refunding RB, CAB(d)
Series B, (AGM), 0.00%, 06/15/43			3,765				2,291,793
Series B, (AGM), 0.00%, 06/15/47			22,775				12,227,214
State of Illinois, GO
5.25%, 02/01/31			1,485				1,651,513
5.25%, 02/01/32			2,365				2,628,319
5.50%, 07/01/33			3,000				3,251,910
5.50%, 07/01/38			695				750,600
5.00%, 02/01/39			1,910				2,092,443
5.50%, 05/01/39			795				1,041,744
Series A, 5.00%, 04/01/38			4,545				4,799,611
Series D, 5.00%, 11/01/24			7,730				8,860,976
Series D, 5.00%, 11/01/28			900				1,111,554
State of Illinois, Refunding GO, Series B, 5.00%, 10/01/27			90				111,787
University of Illinois, RB, Series A, 5.00%, 04/01/44			1,225				1,365,385
Upper Illinois River Valley Development Authority, Refunding RB, 5.00%, 01/01/55(a)			390				417,998
							108,476,024
Indiana — 1.7%
City of Valparaiso Indiana, RB
AMT, 6.75%, 01/01/34.			975				1,077,892
AMT, 7.00%, 01/01/44			2,355				2,606,632
Indiana Finance Authority, RB
Series A, 1st Lien, 5.25%, 10/01/38			3,935				3,967,778
Series A, AMT, 5.00%, 07/01/40			565				607,844
Series A, AMT, 5.00%, 07/01/44			535				573,531
Series A, AMT, 5.00%, 07/01/48			1,770				1,906,378
Series A, AMT, 5.25%, 01/01/51			500				541,920
Indianapolis Local Public Improvement Bond Bank, RB
Series A, 5.00%, 01/15/40			1,520				1,621,582
Series F, 5.25%, 02/01/36			3,055				3,065,509
							15,969,066
Iowa — 0.9%
Iowa Finance Authority, RB, Series A, 5.00%, 05/15/48 .			1,900				2,224,273

4

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Iowa (continued)
Iowa Finance Authority, Refunding RB
5.25%, 12/01/25		$	1,260			$	1,388,634
Series B, 5.25%, 12/01/50(f)			2,445				2,691,089
Iowa Student Loan Liquidity Corp., Refunding RB, Series B, AMT, 3.00%, 12/01/39			1,715				1,791,146
							8,095,142
Kansas — 0.1%
Seward County Unified School District No.480 Liberal, Refunding GO, 5.00%, 09/01/39			720				757,886
Kentucky — 1.1%
County of Boyle Kentucky, Refunding RB, 5.00%, 06/01/37			2,500				3,030,050
Kentucky Economic Development Finance Authority, RB(c)
Series A, 5.25%, 01/01/23			1,230				1,319,150
Series A, 5.38%, 01/01/23			1,830				1,965,878
Kentucky Public Transportation Infrastructure Authority, RB, CAB(b)
Series C, Convertible, 6.45%, 07/01/34			500				624,000
Series C, Convertible, 6.60%, 07/01/39			830				1,026,212
Series C, Convertible, 6.75%, 07/01/43			1,770				2,188,481
							10,153,771
Louisiana — 1.0%
City of Alexandria Louisiana Utilities Revenue, RB, 5.00%, 05/01/24(c)			860				974,535
Lake Charles Harbor & Terminal District, ARB, Series B, AMT, (AGM), 5.50%, 01/01/29			1,500				1,685,430
Louisiana Public Facilities Authority, Refunding RB, 5.00%, 05/15/47			1,635				1,931,262
Parish of St. John the Baptist Louisiana, Refunding RB, Sub-Series B-1, 2.38%, 06/01/37(f)			650				686,211
Tobacco Settlement Financing Corp., Refunding RB
Series A, 5.25%, 05/15/31			375				375,821
Series A, 5.25%, 05/15/32			1,320				1,367,520
Series A, 5.25%, 05/15/33			1,430				1,481,280
Series A, 5.25%, 05/15/35			605				652,747
							9,154,806
Maine — 0.0%
Maine State Housing Authority, RB, S/F Housing, Series C, 3.95%, 11/15/43			335				371,733
Maryland — 1.5%
Anne Arundel County Consolidated Special Taxing District, ST
5.13%, 07/01/36			170				176,800
5.25%, 07/01/44			170				175,430
Howard County Housing Commission, RB, M/F Housing, 5.00%, 12/01/42			1,430				1,719,017
Maryland Health & Higher Educational Facilities Authority, RB
Series 2017, 5.00%, 12/01/46			305				373,521
Series A, 5.00%, 05/15/42			1,760				2,154,926
Series B, 4.00%, 04/15/45			795				937,679

Security		Par (000)				Value
Maryland (continued)
Maryland Stadium Authority, RB, (NPFGC), 5.00%, 05/01/34		$	2,700			$	3,386,178
Maryland State Transportation Authority, Refunding RB, Series A, 2.50%, 07/01/47			4,915				5,034,779
							13,958,330
Massachusetts — 2.5%
Massachusetts Development Finance Agency, RB 5.00%, 01/01/48			1,115				1,336,339
5.00%, 10/01/48			830				957,090
Series A, 5.25%, 01/01/42			1,110				1,349,660
Series A, 5.00%, 01/01/47			1,570				1,861,690
Massachusetts Development Finance Agency, Refunding RB
4.00%, 07/01/39			1,140				1,297,525
5.00%, 04/15/40			400				438,128
5.00%, 09/01/43			750				913,732
Series A, 5.00%, 10/01/35			500				603,105
Series A, 5.00%, 01/01/40			435				529,404
Series A, 5.00%, 10/01/43			750				884,925
Series A, 4.00%, 06/01/49			225				257,879
Series P, 5.45%, 05/15/59			2,010				2,668,637
Massachusetts Educational Financing Authority, RB
Series B, AMT, 2.63%, 07/01/36			475				511,086
AMT, Subordinate, 3.75%, 07/01/47			1,865				1,987,102
Massachusetts Educational Financing Authority, Refunding RB
Series A, AMT, 3.63%, 07/01/32			1,025				1,083,384
Series B, AMT, 3.63%, 07/01/34			485				516,549
Massachusetts Housing Finance Agency, RB, M/F Housing
Series A, 3.80%, 12/01/43			160				176,483
Series A, 3.85%, 06/01/46			205				223,132
Series C-1, 3.15%, 12/01/49			400				417,560
Series C-1, 3.25%, 12/01/54			1,475				1,542,614
Series D-1, 2.55%, 12/01/50			420				421,856
Massachusetts Port Authority, ARB, Series E, AMT, 5.00%, 07/01/51			3,100				3,991,653
							23,969,533
Michigan — 3.1%
City of Detroit Michigan Sewage Disposal System Revenue, Refunding RB, Series A, Senior Lien, 5.25%, 07/01/22(c)			5,320				5,571,210
City of Detroit Michigan Water Supply System Revenue, RB, Series B, 2nd Lien, (AGM), 6.25%, 07/01/36			5				5,021
Eastern Michigan University, RB, Series A, 4.00%, 03/01/47			1,170				1,353,046
Michigan Finance Authority, RB
Series S, 5.00%, 11/01/44			1,555				1,826,161
Series C-2, AMT, Senior Lien, 5.00%, 07/01/22(c)			240				250,366
Series C-1, Senior Lien, 5.00%, 07/01/22(c)			455				475,420
Michigan Finance Authority, Refunding RB 5.00%, 11/15/41			5,560				6,702,135
4.00%, 11/15/46			570				642,299
Series A, 4.00%, 12/01/49			590				696,814
Michigan State Hospital Finance Authority, Refunding RB 5.00%, 11/15/47			215				275,544

S C H E D U L E    O F    I N V E S T M E N  T S 5

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Michigan (continued)
Michigan State Hospital Finance Authority, Refunding RB (continued)
Series C, 4.00%, 06/01/22(c)		$	2,100			$	2,168,271
Michigan State Housing Development Authority, RB, M/F Housing
Series A, 3.80%, 10/01/38			1,690				1,880,091
Series A, 4.15%, 10/01/53			940				1,022,147
Series A, 2.70%, 10/01/56			2,655				2,669,576
Michigan State Housing Development Authority, RB, S/F Housing, Series A, 4.00%, 06/01/49			225				237,316
Michigan State University, Refunding RB, Series B, 5.00%, 02/15/48			730				922,282
Michigan Strategic Fund, RB, AMT, 5.00%, 06/30/48			1,795				2,185,718
							28,883,417
Minnesota — 1.2%
City of Maple Grove Minnesota, Refunding RB, 4.00%, 05/01/37			880				1,012,211
City of Minneapolis Minnesota, Refunding RB, Series A, 5.00%, 11/15/49			560				700,784
City of Otsego Minnesota, Refunding RB, Series A, 5.00%, 09/01/44			425				454,465
City of Spring Lake Park Minnesota, RB, 5.00%, 06/15/39			1,080				1,216,156
Duluth Economic Development Authority, Refunding RB
Series A, 4.25%, 02/15/48			3,800				4,372,128
Series A, 5.25%, 02/15/53			1,500				1,862,805
Series A, 5.25%, 02/15/58			520				645,819
Housing & Redevelopment Authority of The City of St. Paul Minnesota, Refunding RB, Series A, 4.00%, 11/15/43			575				666,184
Minneapolis-St. Paul Metropolitan Airports Commission, Refunding RB, Sub Series D, AMT, 5.00%, 01/01/41			290				350,021
Minnesota Higher Education Facilities Authority, RB, Series 8-K, 4.00%, 03/01/43			385				428,771
							11,709,344
Mississippi — 1.0%
County of Warren Mississippi, RB, Series A, 5.38%, 12/01/35			400				406,280
Mississippi Development Bank, RB, (AGM), 6.88%, 12/01/40			3,595				4,078,779
Mississippi State University Educational Building Corp., Refunding RB, 5.25%, 08/01/23(c)			2,000				2,206,520
State of Mississippi, RB
Series A, 5.00%, 10/15/37			330				411,692
Series A, 4.00%, 10/15/38			1,650				1,917,465
							9,020,736
Missouri — 1.3%
Health & Educational Facilities Authority of the State of Missouri, RB
5.25%, 10/01/21(c)			500				504,190
4.13%, 02/15/43			300				305,496
4.00%, 06/01/53			2,075				2,441,839
Series A, 5.00%, 10/01/23(c)			500				553,255
Series A, 5.00%, 06/01/42			540				659,956
Series C-2, 5.00%, 10/01/34			1,000				1,098,130
Health & Educational Facilities Authority of the State of Missouri, Refunding RB
5.50%, 05/01/43			305				330,507

Security		Par (000)				Value
Missouri (continued)
Health & Educational Facilities Authority of the State of Missouri, Refunding RB (continued)
Series A, 4.00%, 07/01/46		$	1,670			$	2,017,243
Kansas City Industrial Development Authority, ARB, AMT, (AGM), 4.00%, 03/01/57			615				711,488
Missouri Development Finance Board, RB, Series B, 5.00%, 11/01/41			900				910,071
Missouri Housing Development Commission, RB, S/F Housing
(FHLMC, FNMA, GNMA), 2.35%, 11/01/46			1,180				1,194,349
(FHLMC, FNMA, GNMA), 2.40%, 11/01/51			1,230				1,239,852
							11,966,376
Montana — 0.0%
Montana Board of Housing, RB, S/F Housing
Series B-2, 3.50%, 12/01/42			85				90,701
Series B-2, 3.60%, 12/01/47			135				142,804
							233,505
Nebraska — 0.3%
Central Plains Energy Project, RB
5.25%, 09/01/37			575				605,251
5.00%, 09/01/42			600				629,898
Douglas County Hospital Authority No.3, Refunding RB, 5.00%, 11/01/45			400				468,800
Nebraska Public Power District, Refunding RB
Series A, 5.00%, 01/01/32			250				254,955
Series A, 4.00%, 01/01/44			400				405,045
							2,363,949
Nevada — 1.2%
City of Carson City Nevada, Refunding RB, 5.00%, 09/01/42			650				791,811
City of Las Vegas Nevada Special Improvement District No.809, SAB, 5.65%, 06/01/23			230				233,758
City of Reno Nevada, Refunding RB
Series A-1, (AGM), 4.00%, 06/01/43			1,570				1,771,729
Series A-1, (AGM), 4.00%, 06/01/46			1,250				1,403,750
County of Clark Department of Aviation, Refunding RB, Series A-2, Sub Lien, 4.25%, 07/01/36			1,000				1,106,770
County of Clark Nevada, GO
Series A, 5.00%, 06/01/36			1,205				1,513,745
Series A, 5.00%, 06/01/37			3,000				3,759,360
Tahoe-Douglas Visitors Authority, RB
5.00%, 07/01/40			285				337,469
5.00%, 07/01/45			350				408,597
5.00%, 07/01/51			380				438,949
							11,765,938
New Hampshire — 0.5%
New Hampshire Business Finance Authority, Refunding RB(a)
Series A, 3.63%, 07/01/43(f)			430				456,866
Series B, 4.63%, 11/01/42			2,095				2,202,306
Series B, AMT, 3.75%, 07/01/45(f)			395				417,748
Series C, AMT, 4.88%, 11/01/42			1,140				1,203,692
New Hampshire Housing Finance Authority, RB, M/F Housing, (FHA), 4.00%, 07/01/52			800				869,544
							5,150,156
New Jersey — 10.5%
Casino Reinvestment Development Authority, Inc., Refunding RB
5.25%, 11/01/39			1,265				1,416,180

6

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
New Jersey (continued)
Casino Reinvestment Development Authority, Inc., Refunding RB (continued)
5.25%, 11/01/44		$	1,885			$	2,087,449
Hudson County Improvement Authority, RB, 4.00%, 10/01/46			1,195				1,435,816
New Jersey Economic Development Authority, RB
5.00%, 06/15/36			460				586,215
4.00%, 11/01/38			370				429,403
4.00%, 11/01/39			295				341,200
5.00%, 06/15/49			1,670				2,073,522
Series A, 5.00%, 06/15/47			2,500				3,037,950
Series B, 4.50%, 06/15/40			1,270				1,534,173
Series EEE, 5.00%, 06/15/43			160				198,754
Series EEE, 5.00%, 06/15/48			2,705				3,342,731
Series LLL, 5.00%, 06/15/34			365				467,131
Series UU, 5.00%, 06/15/24(c)			80				91,078
Series UU, 5.00%, 06/15/40			345				384,530
Series WW, 5.00%, 06/15/36			210				243,541
AMT, 5.13%, 09/15/23			1,895				2,005,649
AMT, (AGM), 5.00%, 01/01/31			790				865,848
AMT, (AGM), 5.13%, 07/01/42			200				218,444
AMT, 5.38%, 01/01/43			3,000				3,296,970
Series B, AMT, 5.63%, 11/15/30			660				743,266
New Jersey Economic Development Authority, Refunding ARB, AMT, 5.00%, 10/01/47			1,060				1,250,588
New Jersey Economic Development Authority, Refunding SAB 6.50%, 04/01/28			5,000				5,529,700
5.75%, 04/01/31			2,675				2,869,954
New Jersey Educational Facilities Authority, Refunding RB, Series A, 5.00%, 07/01/42			1,450				1,769,725
New Jersey Health Care Facilities Financing Authority, RB, 4.00%, 07/01/47			300				342,255
New Jersey Health Care Facilities Financing Authority, Refunding RB 5.00%, 10/01/37			685				826,302
Series A, 5.00%, 07/01/25			500				522,195
New Jersey Higher Education Student Assistance Authority, RB, Series B, AMT, 3.50%, 12/01/39			680				744,144
New Jersey Housing & Mortgage Finance Agency, Refunding RB, Series A, AMT, 3.80%, 10/01/32			1,255				1,364,800
New Jersey Transportation Trust Fund Authority, RB
5.00%, 06/15/46			2,070				2,566,075
Series AA, 4.13%, 06/15/39			1,040				1,222,957
Series AA, 5.50%, 06/15/39			3,510				3,829,621
Series AA, 5.00%, 06/15/44			1,835				1,999,828
Series AA, 5.00%, 06/15/45			1,325				1,577,406
Series AA, 5.00%, 06/15/46			400				456,168
Series AA, 3.00%, 06/15/50			130				139,064
Series BB, 4.00%, 06/15/50			1,980				2,271,238
Series BB, 5.00%, 06/15/50			3,720				4,578,129
Series S, 5.25%, 06/15/43			2,810				3,575,894
New Jersey Transportation Trust Fund Authority, RB, CAB, Series A, 0.00%, 12/15/35(d)			1,000				743,990
New Jersey Transportation Trust Fund Authority, Refunding RB
4.00%, 12/15/39			510				596,593
Series A, 5.00%, 12/15/32			1,600				2,015,136
Series A, 5.00%, 12/15/36			720				898,128

Security		Par (000)				Value
New Jersey (continued)
New Jersey Turnpike Authority, RB
Series A, 5.00%, 07/01/22(c)		$	1,835			$	1,917,091
Series A, 4.00%, 01/01/42			845				1,023,692
Series A, 4.00%, 01/01/48			270				315,139
Series E, 5.00%, 01/01/45			4,450				5,086,483
South Jersey Port Corp., ARB, Series B, AMT, 5.00%, 01/01/35			625				749,406
South Jersey Transportation Authority, RB, Series A, 4.00%, 11/01/50			275				320,045
State of New Jersey, GO
Series A, 4.00%, 06/01/31			925				1,175,814
Series A, 3.00%, 06/01/32			935				1,084,591
Tobacco Settlement Financing Corp., Refunding RB
Series A, 5.00%, 06/01/35			1,340				1,681,110
Series A, 4.00%, 06/01/37			500				585,815
Series A, 5.25%, 06/01/46			4,955				6,083,749
Sub-Series B, 5.00%, 06/01/46			10,110				12,108,848
							98,621,523
New Mexico — 0.1%
City of Santa Fe New Mexico, RB, Series A, 5.00%, 05/15/44.			200				224,850
New Mexico Hospital Equipment Loan Council, Refunding RB, Series VIC, 5.00%, 08/01/44			450				522,410
							747,260
New York — 9.2%
City of New York, GO, Series C, 5.00%, 08/01/42			805				1,046,870
Erie Tobacco Asset Securitization Corp., Refunding RB, Series A, 5.00%, 06/01/45			3,585				3,610,848
Hudson Yards Infrastructure Corp., RB, 5.75%, 02/15/47			815				818,668
Metropolitan Transportation Authority, RB
Series A, 5.25%, 11/15/21(c)			1,565				1,587,849
Series A-1, 5.25%, 11/15/39			1,000				1,099,370
Series B, 5.25%, 11/15/38			2,970				3,341,725
Metropolitan Transportation Authority, Refunding RB
Series C-1, 4.75%, 11/15/45			1,950				2,419,521
Series C-1, 5.00%, 11/15/50			370				459,977
Series C-1, 5.25%, 11/15/55			1,040				1,313,062
Series C-1, 5.00%, 11/15/56			2,670				3,169,397
Series C-1, 5.25%, 11/15/56			10				12,049
Monroe County Industrial Development Corp., Refunding RB
4.00%, 12/01/46			1,000				1,182,930
Series A, 4.00%, 07/01/50			770				912,073
New York City Housing Development Corp., RB, M/F Housing
Series A, 3.00%, 11/01/55			1,505				1,558,984
Series F-1, (FHA), 2.40%, 11/01/46			7,050				7,087,929
Series F-1, (FHA), 2.50%, 11/01/51			4,860				4,923,666
Series I-1, (FHA 542 (C)), 2.55%, 11/01/45			1,200				1,221,528
Series I-1, (FHA 542 (C)), 2.65%, 11/01/50			3,205				3,281,151
Series I-1, (FHA 542 (C)), 2.70%, 11/01/55			950				967,698
New York City Industrial Development Agency, Refunding RB
(AGM), 3.00%, 03/01/49			775				832,397
3.00%, 03/01/49			605				632,364
Series A, Class A, (AGM), 3.00%, 01/01/37			155				171,545
Series A, Class A, (AGM), 3.00%, 01/01/39			155				170,849
Series A, Class A, (AGM), 3.00%, 01/01/40			110				121,024

S C H E D U L E    O F    I N V E S T M E N  T S 7

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
New York (continued)
New York City Transitional Finance Authority Future Tax Secured Revenue, RB
Sub-Series E-1, 5.00%, 02/01/42		$	1,050			$	1,074,727
Series C, Subordinate, 4.00%, 05/01/45			1,615				1,936,498
Sub-Series C-1, Subordinate, 4.00%, 05/01/40			310				377,772
New York City Water & Sewer System, Refunding RB, Series CC, 5.00%, 06/15/47			1,000				1,083,600
New York Counties Tobacco Trust IV, Refunding RB
Series A, 5.00%, 06/01/38			1,410				1,411,706
Series A, 6.25%, 06/01/41(a)			3,200				3,245,856
New York Counties Tobacco Trust VI, Refunding RB, Series A-2-B, 5.00%, 06/01/45			500				547,395
New York Liberty Development Corp., Refunding RB(a)
Series 1, Class 1, 5.00%, 11/15/44			6,005				6,635,285
Series 2, Class 2, 5.15%, 11/15/34			420				473,122
Series 2, Class 2, 5.38%, 11/15/40			1,450				1,638,108
New York Power Authority, Refunding RB, Series A, 4.00%, 11/15/60			670				799,136
New York State Environmental Facilities Corp., RB, Series B, Subordinate, 5.00%, 06/15/48			1,305				1,645,905
New York State Housing Finance Agency, RB, M/F Housing
Series L-1, (SONYMA), 2.50%, 11/01/45			1,605				1,640,888
Series L-1, (SONYMA), 2.60%, 11/01/50			810				827,545
New York State Thruway Authority, Refunding RB, Series B, Subordinate, 3.00%, 01/01/46			900				970,488
New York State Urban Development Corp., RB
Series A, 4.00%, 03/15/49			5,700				6,732,783
Series A, 3.00%, 03/15/50			930				997,797
New York Transportation Development Corp., RB
AMT, 5.00%, 10/01/35			640				828,602
AMT, 5.00%, 10/01/40			1,825				2,333,372
Port Authority of New York & New Jersey, Refunding ARB, Series 223, AMT, 4.00%, 07/15/41			1,075				1,292,408
State of New York Mortgage Agency, Refunding RB, S/F Housing, Series 211, 3.75%, 10/01/43			1,190				1,284,676
Triborough Bridge & Tunnel Authority, RB
Series A, 4.00%, 11/15/54			710				848,031
Series A, 5.00%, 11/15/54			610				786,241
Series A, 5.00%, 11/15/56			2,480				3,228,563
TSASC, Inc., Refunding RB, Series A, 5.00%, 06/01/41			535				625,506
Westchester County Healthcare Corp., RB, Series A, Senior Lien, 5.00%, 11/01/44			467				521,338
Westchester Tobacco Asset Securitization Corp., Refunding RB, Sub-Series C, 4.00%, 06/01/42			365				403,343
							86,134,165
North Carolina — 0.9%
County of Union North Carolina Enterprise System Revenue, RB, 3.00%, 06/01/51			5,740				6,303,898
North Carolina Medical Care Commission, RB 4.00%, 11/01/52			400				471,040
Series A, 4.00%, 10/01/50			115				129,377
Series A, 5.00%, 10/01/50			305				368,541
University of North Carolina at Chapel Hill, RB, 5.00%, 02/01/49			550				885,197
							8,158,053

Security		Par (000)				Value
North Dakota — 0.1%
County of Cass North Dakota, Refunding RB, Series B, 5.25%, 02/15/58		$	695			$	860,876
Ohio — 3.6%
Buckeye Tobacco Settlement Financing Authority,
Refunding RB
Series A-2, Class 1, 4.00%, 06/01/37			210				251,870
Series A-2, Class 1, 4.00%, 06/01/38			210				251,103
Series A-2, Class 1, 4.00%, 06/01/39			210				250,215
Series A-2, Class 1, 3.00%, 06/01/48			1,505				1,605,158
Series A-2, Class 1, 4.00%, 06/01/48			550				642,543
Series B-2, Class 2, 5.00%, 06/01/55			10,715				12,572,767
City of Dayton Ohio Airport Revenue, Refunding RB, Series A, AMT, (AGM), 4.00%, 12/01/32			2,000				2,051,940
County of Franklin Ohio, RB
Series 2017, 5.00%, 12/01/46			290				354,977
Series A, 6.13%, 07/01/22(c)			50				52,753
Series A, 6.13%, 07/01/40			770				803,972
Series A, 4.00%, 12/01/49			365				430,072
County of Hamilton Ohio, Refunding RB
4.00%, 08/15/50			1,085				1,287,754
Series A, 3.75%, 08/15/50			755				865,298
County of Montgomery Ohio, Refunding RB 4.00%, 11/15/42			655				754,501
4.00%, 08/01/51			810				959,340
Northwest Local School District/Hamilton & Butler Counties, GO, 4.00%, 12/01/50			1,135				1,208,139
Ohio Air Quality Development Authority, RB, AMT, 5.00%, 07/01/49(a)			1,335				1,571,255
Ohio Housing Finance Agency, RB, S/F Housing, Series A, (FHLMC, FNMA, GNMA), 4.00%, 09/01/48			90				98,237
Ohio Turnpike & Infrastructure Commission, RB,
Series A-1, Junior Lien, 5.25%, 02/15/31			2,470				2,663,648
State of Ohio, RB, AMT, 5.00%, 06/30/53			1,000				1,104,650
State of Ohio, Refunding RB
Series A, 5.00%, 01/15/41			1,500				1,530,735
Series A, 4.00%, 01/15/50			2,250				2,607,345
							33,918,272
Oklahoma — 0.8%
Oklahoma City Public Property Authority, Refunding RB, 5.00%, 10/01/39			720				841,666
Oklahoma Development Finance Authority, RB
Series B, 5.25%, 08/15/48			1,460				1,788,996
Series B, 5.50%, 08/15/57			625				775,563
Oklahoma State University, RB, Series A, 4.00%, 09/01/46			500				612,680
Oklahoma Turnpike Authority, RB
Series A, 4.00%, 01/01/48			1,780				2,049,011
Series C, 4.00%, 01/01/42			1,420				1,639,816
							7,707,732
Oregon — 1.0%
Clackamas County School District No.12 North
Clackamas, GO, CAB, Series A, (GTD), 0.00%, 06/15/38(d)			510				292,414
Medford Hospital Facilities Authority, Refunding RB, Series A, 4.00%, 08/15/50			1,210				1,422,524
Multnomah & Clackamas Counties School District No.10JT Gresham-Barlow, GO, CAB, Series A, (GTD), 0.00%, 06/15/38(d)			530				335,835

8

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Oregon (continued)
Oregon Health & Science University, RB
Series A, 4.00%, 07/01/37		$	675			$	785,835
Series A, 5.00%, 07/01/42			600				739,752
Oregon State Facilities Authority, Refunding RB, Series A, 5.00%, 04/01/45			1,475				1,694,303
Port of Portland Oregon Airport Revenue, Refunding ARB, Series 27-A, AMT, 5.00%, 07/01/45			1,290				1,631,205
Salem-Keizer School District No.24J, GO, CAB, Series A, (GTD), 0.00%, 06/15/40(d)			1,980				1,283,535
State of Oregon Housing & Community Services Department, RB, S/F Housing, Series C, 3.95%, 07/01/43			150				156,753
Warm Springs Reservation Confederated Tribe, Refunding RB, Series B, 5.00%, 11/01/39(a)			650				781,488
							9,123,644
Pennsylvania — 4.9%
Altoona Area School District, GO, (BAM SAW), 5.00%, 12/01/36			110				129,598
Bristol Township School District, GO, (SAW), 5.25%, 06/01/37			2,500				2,722,575
Bucks County Industrial Development Authority, RB, 4.00%, 08/15/50			1,305				1,488,078
Commonwealth Financing Authority, RB
5.00%, 06/01/33			335				421,490
5.00%, 06/01/34			750				941,888
(AGM), 4.00%, 06/01/39			1,365				1,576,111
County of Lehigh Pennsylvania, Refunding RB, Series A, 4.00%, 07/01/49			420				488,922
Delaware River Port Authority, RB, 4.50%, 01/01/32			1,500				1,649,385
Hospitals & Higher Education Facilities Authority of Philadelphia, RB, Series A, 5.63%, 07/01/42			795				825,926
Lancaster Industrial Development Authority, RB, 5.00%, 12/01/49			950				1,124,344
Montgomery County Higher Education and Health Authority, Refunding RB
4.00%, 09/01/49			715				818,975
Series A, 5.00%, 09/01/43			905				1,115,675
Series A, 5.00%, 09/01/48			980				1,201,088
Series A, 4.00%, 09/01/49			1,380				1,546,663
Pennsylvania Economic Development Financing Authority, RB
Series A-1, 4.00%, 04/15/50			470				551,357
AMT, 5.00%, 12/31/38			390				462,879
AMT, 5.00%, 06/30/42			2,455				2,856,613
Pennsylvania Economic Development Financing Authority, Refunding RB, AMT, 5.50%, 11/01/44			1,905				2,036,197
Pennsylvania Higher Education Assistance Agency, RB, Series B, AMT, Subordinate, 3.00%, 06/01/47			100				100,018
Pennsylvania Higher Educational Facilities Authority, RB, 4.00%, 08/15/49			1,680				1,974,168
Pennsylvania Housing Finance Agency, RB, S/F Housing
Series 125B, AMT, 3.65%, 10/01/42			1,000				1,084,510
Series 128B, AMT, 3.85%, 04/01/38			965				1,074,856
Pennsylvania Housing Finance Agency, Refunding RB, S/F Housing, Series 119, AMT, 3.50%, 10/01/36			1,150				1,206,062
Pennsylvania Turnpike Commission, RB
Series A, 5.00%, 12/01/44			1,380				1,577,492
Series C, 5.00%, 12/01/23(c)			1,305				1,452,361
Series C, 5.00%, 12/01/43			415				457,865

Security		Par (000)				Value
Pennsylvania (continued)
Pennsylvania Turnpike Commission, RB (continued)
Sub-Series B-1, 5.25%, 06/01/47		$	1,170			$	1,446,015
Series A, Subordinate, 5.00%, 12/01/44			2,080				2,638,542
Series A, Subordinate, 4.00%, 12/01/49			1,075				1,246,828
Series A, Subordinate, 4.00%, 12/01/50			610				720,599
Pennsylvania Turnpike Commission, Refunding RB, 2nd Series, 5.00%, 12/01/41			1,250				1,547,000
Pottsville Hospital Authority, Refunding RB, Series B, 5.00%, 07/01/45			1,250				1,518,625
Springfield School District/Delaware County, GO
(SAW), 5.00%, 03/01/40			865				1,083,231
(SAW), 5.00%, 03/01/43			590				736,892
Swarthmore Borough Authority, RB, 5.00%, 09/15/48			1,900				2,418,016
Westmoreland County Municipal Authority, Refunding RB, (BAM), 5.00%, 08/15/36			1,290				1,590,583
							45,831,427
Puerto Rico — 5.5%
Children’s Trust Fund, Refunding RB
5.50%, 05/15/39			1,115				1,142,529
5.63%, 05/15/43			1,200				1,213,968
Puerto Rico Commonwealth Aqueduct & Sewer Authority, RB
Series A, Senior Lien, 5.00%, 07/01/33			4,505				4,665,243
Series A, Senior Lien, 5.13%, 07/01/37			1,270				1,313,637
Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB
Series A-1, Restructured, 4.75%, 07/01/53			9,061				10,423,321
Series A-1, Restructured, 5.00%, 07/01/58			17,440				20,319,867
Series A-2, Restructured, 4.33%, 07/01/40			2,508				2,848,712
Series A-2, Restructured, 4.78%, 07/01/58			2,097				2,411,131
Series B-1, Restructured, 4.75%, 07/01/53			425				488,899
Series B-2, Restructured, 4.78%, 07/01/58			412				473,969
Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB, CAB(d)
Series A-1, Restructured, 0.00%, 07/01/46			18,474				6,171,794
Series A-1, Restructured, 0.00%, 07/01/51			1,442				350,103
							51,823,173
Rhode Island — 1.9%
Rhode Island Health and Educational Building Corp., Refunding RB, Series A, (AGM, GTD), 3.75%, 05/15/32			1,155				1,337,386
Rhode Island Housing and Mortgage Finance Corp., RB, M/F Housing, Series 3-B, (FHA INS), 4.13%, 10/01/49			480				499,090
Rhode Island Student Loan Authority, RB, Series A, AMT, 3.63%, 12/01/37			945				1,027,054
Tobacco Settlement Financing Corp., Refunding RB
Series A, 5.00%, 06/01/35			1,000				1,148,510
Series A, 5.00%, 06/01/40			2,050				2,320,108
Series B, 4.50%, 06/01/45			6,005				6,685,907
Series B, 5.00%, 06/01/50			4,500				5,152,140
							18,170,195
South Carolina — 4.3%
Charleston County Airport District, ARB
Series A, AMT, 5.50%, 07/01/38			1,000				1,093,410
Series A, AMT, 6.00%, 07/01/38			1,695				1,869,415
Series A, AMT, 5.50%, 07/01/41			1,000				1,091,840
County of Berkeley South Carolina, SAB
4.25%, 11/01/40			315				357,097

S C H E D U L E    O F    I N V E S T M E N  T S 9

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
South Carolina (continued)
County of Berkeley South Carolina, SAB (continued)
4.38%, 11/01/49		$	470			$	530,141
County of Charleston South Carolina, ARB, 5.25%, 12/01/38			3,705				4,124,665
South Carolina Jobs-Economic Development Authority, RB 5.00%, 01/01/40(a)			485				530,910
5.00%, 04/01/44			200				230,484
4.00%, 04/01/49			200				216,936
5.00%, 04/01/49			270				306,404
4.00%, 04/01/54			210				227,344
5.00%, 04/01/54			490				554,592
5.00%, 01/01/55(a)			845				901,108
South Carolina Jobs-Economic Development Authority, Refunding RB 5.00%, 02/01/38			2,875				3,418,605
Series A, 5.00%, 05/01/43			1,680				2,070,919
Series A, 4.25%, 05/01/48			1,445				1,673,613
Series A, 5.00%, 05/01/48			3,030				3,705,296
South Carolina Ports Authority, ARB
AMT, 5.25%, 07/01/25(c)			1,650				1,960,045
AMT, 5.00%, 07/01/55			710				852,866
South Carolina Public Service Authority, RB
Series A, 5.50%, 12/01/54			4,450				5,018,087
Series E, 5.00%, 12/01/48			440				484,832
Series E, 5.50%, 12/01/53			2,500				2,765,575
South Carolina Public Service Authority, Refunding RB
Series A, 5.00%, 12/01/36			175				208,961
Series A, 5.00%, 12/01/50			1,035				1,180,066
Series E, 5.25%, 12/01/55			4,685				5,478,077
							40,851,288
South Dakota — 0.2%
City of Rapid City South Dakota Sales Tax Revenue, RB, 4.00%, 12/01/26(c)			740				846,774
South Dakota Health & Educational Facilities Authority, Refunding RB, Series A, 4.00%, 09/01/50			705				827,064
							1,673,838
Tennessee — 1.6%
Chattanooga Health Educational & Housing Facility Board, RB, Series A, 5.25%, 01/01/23(c)			3,650				3,913,749
Chattanooga Health Educational & Housing Facility Board, Refunding RB, Series A, 4.00%, 08/01/44			115				134,392
Chattanooga-Hamilton County Hospital Authority, Refunding RB, Series A, 5.00%, 10/01/44			875				981,129
Greeneville Health & Educational Facilities Board, Refunding RB, Series A, 4.00%, 07/01/40			375				435,173
Johnson City Health & Educational Facilities Board, RB, Series A, 5.00%, 08/15/42			800				836,744
Metropolitan Government Nashville & Davidson County Health & Educational Facilities Board, RB, Series A, 5.00%, 07/01/40			1,530				1,815,773
Metropolitan Government Nashville & Davidson County Health & Educational Facilities Board, Refunding RB Series A, 4.00%, 10/01/49			230				260,498

Security		Par (000)				Value
Tennessee (continued)
Metropolitan Government Nashville & Davidson County Health & Educational Facilities Board, Refunding RB (continued)
Series A, 5.25%, 10/01/58		$	2,860			$	3,514,854
Metropolitan Nashville Airport Authority, ARB, Series B, AMT, 5.00%, 07/01/40			2,500				2,895,425
							14,787,737
Texas — 6.2%
Brazos Higher Education Authority, Inc., RB, Series 1B, AMT, Subordinate, 3.00%, 04/01/40			65				62,842
Central Texas Regional Mobility Authority, RB, Series E, Senior Lien, 4.00%, 01/01/50			1,555				1,818,293
Central Texas Regional Mobility Authority, Refunding RB, Sub Lien, 5.00%, 01/01/23(c)			430				459,859
City of Austin Texas Airport System Revenue, ARB, AMT, 5.00%, 11/15/39			440				500,861
City of Austin Texas Electric Utility Revenue, Refunding RB, Series A, 5.00%, 11/15/37			1,500				1,590,360
City of Beaumont Texas, GO, 5.25%, 03/01/23(c)			2,340				2,529,680
City of Houston Texas Airport System Revenue, RB, Series A, AMT, 6.63%, 07/15/38			225				225,893
City of Houston Texas Airport System Revenue, Refunding ARB, AMT, 5.00%, 07/15/27			130				154,898
City of Houston Texas Airport System Revenue, Refunding RB
Sub-Series D, 5.00%, 07/01/37			1,175				1,483,990
Series A, AMT, 5.00%, 07/01/27			125				148,800
Sub-Series A, AMT, 4.00%, 07/01/47			690				805,865
City of San Antonio Texas Electric & Gas Systems Revenue, Refunding RB, Series A, 5.00%, 02/01/48			850				1,070,762
Dallas Fort Worth International Airport, ARB, Series H, AMT, 5.00%, 11/01/21(c)			2,200				2,225,586
El Paso Independent School District, GO, (PSF), 4.00%, 08/15/43			890				1,044,032
Harris County Cultural Education Facilities Finance Corp., RB, Series B, 7.00%, 01/01/23(c)			565				619,907
Harris County-Houston Sports Authority, Refunding RB, Series G, Senior Lien, (NPFGC), 0.00%, 11/15/41(d)			11,690				5,300,714
Leander Independent School District, Refunding GO, CAB(d)
Series D, (PSF), 0.00%, 08/15/24(c)			370				219,144
Series D, (PSF), 0.00%, 08/15/35			3,630				2,145,366
Lower Colorado River Authority, Refunding RB, 5.50%, 05/15/33			2,240				2,442,429
Midland County Fresh Water Supply District No.1, RB, CAB(d)
Series A, 0.00%, 09/15/38			10,760				5,703,123
Series A, 0.00%, 09/15/40			2,525				1,174,579
Series A, 0.00%, 09/15/41			1,395				615,614
New Hope Cultural Education Facilities Finance Corp., RB
Series A, 5.00%, 04/01/25(c)			145				169,937
Series A, 5.00%, 08/15/50(a)			455				496,896
North Texas Tollway Authority, RB, Series A, 5.50%, 09/01/21(c)			3,150				3,163,387
North Texas Tollway Authority, RB, CAB, Series B, 0.00%, 09/01/31(c)(d)			2,415				1,332,186

10

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Texas (continued)
North Texas Tollway Authority, Refunding RB 4.25%, 01/01/49		$	3,165			$	3,731,377
Series A, 5.00%, 01/01/48			1,060				1,297,398
Red River Education Finance Corp., RB, 5.25%, 03/15/23(c)			1,820				1,971,970
San Antonio Public Facilities Corp., Refunding RB, 4.00%, 09/15/42			1,355				1,402,710
San Antonio Water System, Refunding RB, Series A, Junior Lien, 5.00%, 05/15/48			945				1,175,589
Tarrant County Cultural Education Facilities Finance Corp., RB
Series B, 5.00%, 07/01/35			1,500				1,887,150
Series B, 5.00%, 07/01/48			3,330				4,102,726
Texas City Industrial Development Corp., RB, Series 2012, 4.13%, 12/01/45			255				278,636
Texas Department of Housing & Community Affairs, RB, S/F Housing, Series A, (GNMA), 4.25%, 09/01/43			185				207,228
Texas Private Activity Bond Surface Transportation Corp., RB, AMT, 5.00%, 06/30/58			1,095				1,354,964
Texas Transportation Commission, RB, Series A, 5.00%, 08/01/57			1,085				1,274,658
Texas Transportation Commission, RB, CAB(d) 0.00%, 08/01/35			270				166,595
0.00%, 08/01/36			145				85,116
0.00%, 08/01/37			195				108,785
0.00%, 08/01/38			200				106,250
0.00%, 08/01/39			1,000				505,420
0.00%, 08/01/43			795				325,990
0.00%, 08/01/44			870				337,325
0.00%, 08/01/45			1,135				417,510
							58,242,400
Utah — 0.5%
City of Salt Lake City Utah Airport Revenue, ARB
Series A, AMT, 5.00%, 07/01/43			530				648,020
Series A, AMT, 5.00%, 07/01/47			665				798,086
Series A, AMT, 5.00%, 07/01/48			640				776,813
County of Utah, RB
Series A, 4.00%, 05/15/43			155				185,688
Series A, 3.00%, 05/15/50			710				763,584
Utah Charter School Finance Authority, RB
(UT), 5.00%, 10/15/48			360				420,689
Series A, 5.00%, 06/15/39(a)			200				219,820
Utah Charter School Finance Authority, Refunding RB
5.00%, 06/15/40(a)			150				176,949
(UT), 4.00%, 04/15/42			400				431,532
5.00%, 06/15/55(a)			385				440,448
							4,861,629
Vermont — 0.3%
University of Vermont and State Agricultural College, Refunding RB 4.00%, 10/01/37			500				554,500
5.00%, 10/01/43			1,470				1,824,667
Vermont Student Assistance Corp., RB, Series A, AMT, 4.13%, 06/15/30			295				313,408
							2,692,575
Virginia — 1.6%
Ballston Quarter Community Development Authority, TA, Series A, 5.38%, 03/01/36			490				499,888

Security		Par (000)				Value
Virginia (continued)
Hanover County Economic Development Authority, Refunding RB, Series A, 5.00%, 07/01/47		$	970			$	990,351
Henrico County Economic Development Authority, Refunding RB, 4.00%, 10/01/45			160				178,627
Lexington Industrial Development Authority, RB, 5.00%, 01/01/22(c)			940				959,007
Virginia Beach Development Authority, Refunding RB 5.00%, 09/01/44			585				672,452
4.00%, 09/01/48			375				408,491
Virginia Housing Development Authority, RB, M/F Housing
Series 1, (FHLMC, FNMA, GNMA), 2.55%, 11/01/50			840				848,190
Series B, 4.00%, 06/01/53			385				419,280
Series D, 3.90%, 10/01/48			1,430				1,567,895
Virginia Small Business Financing Authority, RB
AMT, 5.00%, 01/01/48(a)(f)			470				497,420
AMT, 5.00%, 12/31/52			2,330				2,811,890
AMT, Senior Lien, 5.25%, 01/01/32			950				992,313
AMT, Senior Lien, 6.00%, 01/01/37			3,900				4,097,730
							14,943,534
Washington — 2.2%
Grant County Public Utility District No.2 Priest Rapids Hydroelectric Project, Refunding RB, Series A, 5.00%, 01/01/26(c)			1,555				1,873,277
King County Housing Authority, Refunding RB, 3.00%, 06/01/40			440				476,142
Port of Seattle Washington, ARB
Series A, AMT, 5.00%, 05/01/43			1,470				1,752,505
Series C, AMT, 5.00%, 04/01/40			930				1,049,700
Series C, AMT, Intermediate Lien, 5.00%, 05/01/37			1,450				1,764,940
State of Washington, COP
Series B, 5.00%, 07/01/36			1,000				1,251,740
Series B, 5.00%, 07/01/37			3,910				4,891,605
Series B, 5.00%, 07/01/38			650				812,714
State of Washington, GO, Series C, 5.00%, 02/01/36			1,300				1,640,158
Washington Health Care Facilities Authority, RB, Series A, 5.75%, 01/01/23(c)			2,820				3,045,036
Washington Health Care Facilities Authority, Refunding RB 5.00%, 09/01/55			285				362,053
Series A, 4.00%, 08/01/44			250				291,313
Washington State Housing Finance Commission, Refunding RB(a) 5.00%, 01/01/38			600				709,728
5.00%, 01/01/43			900				1,061,586
							20,982,497
West Virginia — 0.9%
West Virginia Hospital Finance Authority, RB, Series A, 4.00%, 06/01/51			2,910				3,264,874
West Virginia Parkways Authority, RB, Senior Lien, 4.00%, 06/01/51			4,055				4,913,241
							8,178,115
Wisconsin — 1.2%
Public Finance Authority, RB
Series A, 4.00%, 11/15/37			100				117,555
Series A, 5.00%, 07/15/39(a)			100				114,526
Series A, 5.00%, 10/15/40(a)			425				477,675
Series A, 5.00%, 11/15/41			270				334,795
Series A, 5.00%, 07/15/49(a)			245				274,616

S C H E D U L E    O F    I N V E S T M E N  T S 11

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Wisconsin (continued)
Public Finance Authority, RB (continued)
Series A, 5.00%, 10/15/50(a)		$	540			$	596,138
Series A, 5.00%, 07/15/54(a)			115				128,005
Series A, 5.00%, 07/01/55(a)			300				330,714
Series A, 5.00%, 10/15/55(a)			560				614,835
Series A-1, 4.50%, 01/01/35(a)			230				264,341
Series A-1, 5.00%, 01/01/55(a)			305				351,351
Series B, 5.00%, 06/01/49			320				383,712
Public Finance Authority, Refunding RB 5.00%, 09/01/49(a)			165				178,921
5.00%, 09/01/54(a)			130				141,064
Series A, 4.00%, 10/01/49			2,000				2,308,220
Series A, 5.00%, 11/15/49			335				403,591
AMT, 4.00%, 08/01/35			280				285,102
Wisconsin Health & Educational Facilities Authority, Refunding RB, 5.00%, 04/01/44			2,005				2,556,756
Wisconsin Housing & Economic Development Authority, RB, M/F Housing
Series A, 3.15%, 11/01/44			480				508,795
Series A, 4.45%, 05/01/57			575				634,231
WPPI Energy, Refunding RB, Series A, 5.00%, 07/01/37			665				750,014
							11,754,957
Wyoming — 0.0%
Wyoming Municipal Power Agency, Inc., Refunding RB, Series A, (BAM), 5.00%, 01/01/27(c)			330				410,520
Total Municipal Bonds — 117.9% (Cost: $977,733,254)							1,109,837,902
Municipal Bonds Transferred to Tender Option Bond Trusts(i)
Arizona — 0.1%
Maricopa County Industrial Development Authority, RB,
Series A, 4.00%, 01/01/41			915				1,062,278
California — 3.2%
Bay Area Toll Authority, Refunding RB, 4.00%, 04/01/42(j)			3,896				4,501,692
Los Angeles Unified School District, GO, Series B-1, 5.25%, 07/01/42(j)			1,451				1,822,680
Sacramento Area Flood Control Agency, Refunding SAB 5.00%, 10/01/47			8,384				10,110,292
Series A, 5.00%, 10/01/43			2,775				3,352,394
San Marcos Unified School District, GO, Series A, 5.25%, 08/01/21			10,680				10,680,000
							30,467,058
Colorado — 1.6%
City & County of Denver Colorado Airport System Revenue, Refunding ARB(j)
Series A, AMT, 5.25%, 12/01/43			1,901				2,390,482
Series A, AMT, 5.25%, 12/01/48			1,664				2,087,929
Colorado Health Facilities Authority, Refunding RB(j)
Series A, 5.00%, 08/01/44			1,950				2,454,641

Security		Par (000)				Value
Colorado (continued)
Colorado Health Facilities Authority, Refunding RB(j) (continued)
Series A, 4.00%, 08/01/49		$	2,490			$	2,874,605
County of Adams Colorado, Refunding COP, 4.00%, 12/01/45			4,650				5,193,818
							15,001,475
Connecticut — 0.7%
Connecticut State Health & Educational Facilities Authority, Refunding RB, 5.00%, 12/01/45			5,687				6,782,772
District of Columbia — 0.7%
District of Columbia Housing Finance Agency, RB, M/F Housing, Series B-2, (FHA), 4.10%, 09/01/39			1,300				1,480,791
Metropolitan Washington Airports Authority Dulles Toll Road Revenue, Refunding RB, Series B, Subordinate, (AGM), 4.00%, 10/01/53			1,299				1,523,815
Washington Metropolitan Area Transit Authority, RB, Series B, 5.00%, 07/01/42			2,992				3,664,642
							6,669,248
Florida — 1.3%
City Of South Miami Health Facilities Authority, Inc., Refunding RB, 5.00%, 08/15/47			1,290				1,594,930
City of Tampa Florida, RB, Series A, 4.00%, 11/15/46			1,932				2,177,297
County of Broward Florida Port Facilities Revenue, ARB, Series B, AMT, 4.00%, 09/01/49			2,350				2,698,858
Escambia County Health Facilities Authority, Refunding RB, 4.00%, 08/15/45(j)			1,771				2,069,388
Greater Orlando Aviation Authority, ARB, Series A, AMT, 4.00%, 10/01/49(j)			3,543				4,111,041
							12,651,514
Georgia — 0.7%
Dalton Whitfield County Joint Development Authority, RB, 4.00%, 08/15/48			3,647				4,228,722
Georgia Housing & Finance Authority, Refunding RB
Series A, 3.60%, 12/01/44			1,042				1,143,451
Series A, 3.70%, 06/01/49			1,051				1,160,096
							6,532,269
Idaho — 0.2%
Idaho State Building Authority, RB, Series A, 4.00%, 09/01/48			1,700				1,957,788
Illinois — 1.1%
City of Chicago IIllinois Waterworks Revenue, Refunding RB, 2nd Lien, (AGM), 5.25%, 11/01/33			480				481,632
Illinois Finance Authority, Refunding RB(j)
Series C, 4.00%, 02/15/27(c)			5				5,836
Series C, 4.00%, 02/15/41			2,033				2,326,557
Illinois State Toll Highway Authority, RB
Series A, 5.00%, 01/01/40			825				963,312
Series B, 5.00%, 01/01/40			3,329				3,949,665
Series C, 5.00%, 01/01/38			2,252				2,589,286
							10,316,288
Iowa — 0.2%
Iowa Finance Authority, Refunding RB, Series E, 4.00%, 08/15/46			1,455				1,632,321

12

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Louisiana — 0.9%
City of Shreveport Louisiana Water & Sewer Revenue, RB
Series B, Junior Lien, (AGM), 4.00%, 12/01/44		$	2,043			$	2,298,797
Series B, Junior Lien, (AGM), 4.00%, 12/01/49			4,105				4,618,196
State of Louisiana Gasoline & Fuels Tax Revenue, Refunding RB, Series A, 1st Lien, 4.00%, 05/01/41			1,245				1,399,791
							8,316,784
Maryland — 1.7%
City of Baltimore Maryland, RB
Series A, 5.00%, 07/01/46			3,014				3,653,440
Series A, 4.00%, 07/01/49			3,122				3,690,678
Maryland Stadium Authority, RB 5.00%, 05/01/42			1,740				2,165,517
5.00%, 05/01/47			4,894				6,102,512
							15,612,147
Massachusetts — 1.8%
Commonwealth of Massachusetts Transportation Fund Revenue, RB, Series A, 4.00%, 06/01/45			1,502				1,680,077
Commonwealth of Massachusetts, GO, Series A, 5.00%, 01/01/46			1,982				2,474,603
Massachusetts Development Finance Agency, Refunding RB, 5.00%, 07/01/47			3,359				4,029,169
Massachusetts Housing Finance Agency, RB, M/F Housing, Series A-1, (FHA), 3.10%, 06/01/60			1,111				1,146,656
Massachusetts School Building Authority, RB, Series B, 5.00%, 10/15/21(c)			7,713				7,789,449
							17,119,954
Michigan — 2.4%
Michigan Finance Authority, RB(j) 4.00%, 02/15/47			5,486				6,407,983
Series A, 4.00%, 02/15/44			1,912				2,235,291
Michigan State Building Authority, Refunding RB, Series I, 5.00%, 10/15/45			5,670				6,667,466
Michigan State Housing Development Authority, RB, M/F Housing, Series A, 4.05%, 10/01/48			2,337				2,574,115
Michigan State Housing Development Authority, RB, S/F Housing, Series C, 3.90%, 12/01/33			4,650				5,190,829
							23,075,684
Nevada — 0.3%
County of Clark Nevada, GO, Series A, 5.00%, 05/01/48			2,260				2,803,514
New York — 9.5%
City of New York, GO, Sub-Series-D1, Series D, 5.00%, 12/01/43(j)			2,620				3,319,619
City of New York, Refunding GO, Series B, 4.00%, 08/01/32			3,990				4,399,055
Hudson Yards Infrastructure Corp., RB, 5.75%, 02/15/47(j)			1,757				1,764,760
New York City Housing Development Corp., Refunding RB, Series A, 4.15%, 11/01/38.			2,970				3,335,191
New York City Transitional Finance Authority Building Aid Revenue, RB, Series S-1, (SAW), 4.00%, 07/15/42(j)			1,395				1,443,309
New York City Water & Sewer System, Refunding RB
Series BB, 5.25%, 12/15/21(c)			4,993				5,087,303
Series BB, 4.00%, 06/15/47			3,660				3,837,400
Series CC, 5.00%, 06/15/23(c)			2,820				3,066,196
Series CC, 5.00%, 06/15/47			3,181				3,458,047

Security		Par (000)				Value
New York (continued)
New York City Water & Sewer System, Refunding RB (continued)
Series FF, 5.00%, 06/15/45.		$	3,019			$	3,140,802
New York Liberty Development Corp., ARB, 5.25%, 12/15/43.			22,829				23,245,305
New York Liberty Development Corp., Refunding RB, 5.75%, 11/15/51(j)			12,111				12,287,478
New York Power Authority, Refunding RB, Series A, 4.00%, 11/15/60			947				1,129,950
New York State Dormitory Authority, Refunding RB, Series D, 4.00%, 02/15/47			4,317				5,068,831
New York State Thruway Authority, Refunding RB
Series A, 5.00%, 03/15/31			1,560				1,568,970
Series B, Subordinate, 4.00%, 01/01/50			2,083				2,435,764
New York State Urban Development Corp., RB, Series A, 4.00%, 03/15/46			4,846				5,667,647
Port Authority of New York & New Jersey, ARB, Series 221, AMT, 4.00%, 07/15/60			854				993,442
Port Authority of New York & New Jersey, Refunding ARB, 194th Series, 5.25%, 10/15/55			3,210				3,805,872
							89,054,941
North Carolina — 0.8%
North Carolina Capital Facilities Finance Agency, Refunding RB, Series B, 5.00%, 10/01/25(c)			5,550				6,622,038
North Carolina Housing Finance Agency, RB, S/F Housing, Series 39-B, (FHLMC, FNMA, GNMA), 4.00%, 01/01/48			777				857,675
							7,479,713
Pennsylvania — 2.4%
Commonwealth of Pennsylvania, GO(j)
1st Series, 4.00%, 03/01/36			1,559				1,839,926
1st Series, 4.00%, 03/01/38			3,650				4,280,428
County of Lehigh Pennsylvania, Refunding RB, Series A, 4.00%, 07/01/49(j)			2,996				3,487,318
Northampton County General Purpose Authority, Refunding RB, 4.00%, 11/01/38(j)			2,596				3,082,000
Pennsylvania Turnpike Commission, RB, Sub-Series A, 5.50%, 12/01/42			4,018				4,980,914
Pennsylvania Turnpike Commission, Refunding RB, Sub-Series B-2, (AGM), 5.00%, 06/01/35			1,640				2,028,647
Westmoreland County Municipal Authority, Refunding RB, (BAM), 5.00%, 08/15/38			2,533				2,961,953
							22,661,186
Rhode Island — 0.4%
Narragansett Bay Commission, Refunding RB, Series A, 4.00%, 09/01/22(c)			1,140				1,188,085
Rhode Island Health and Educational Building Corp., RB, Series A, 4.00%, 09/15/47			1,982				2,269,766
							3,457,851
South Carolina — 0.2%
South Carolina Ports Authority, ARB, Series B, AMT, 4.00%, 07/01/49(j)			1,665				1,884,114
Texas — 5.6%
Board of Regents of the University of Texas System, Refunding RB, Series B, 5.00%, 08/15/43			3,842				4,024,362
City of San Antonio Texas Electric & Gas Systems Revenue, RB, Junior Lien, 5.00%, 02/01/23(c)			4,560				4,894,157

S C H E D U L E    O F    I N V E S T M E N  T S 13

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD) (Percentages shown are based on Net Assets)

Security		Par (000)				Value
Texas (continued)
County of Hidalgo Texas, GO, Series A, 4.00%, 08/15/43		$	2,297			$	2,676,351
El Paso Independent School District, GO, (PSF-GTD), 4.00%, 08/15/48			2,999				3,544,077
Harris County Toll Road Authority, Refunding RB, Series A, Senior Lien, 5.00%, 08/15/43			1,858				2,302,891
Houston Community College System, GO, 4.00%, 02/15/23(c)			4,394				4,657,374
Howe Independent School District, GO, (PSF-GTD), 4.00%, 08/15/43			1,095				1,250,556
Lower Colorado River Authority, Refunding, RB, 4.00%, 05/15/43			1,504				1,542,234
Metropolitan Transit Authority of Harris County Sales & Use Tax Revenue, Refunding RB, Series A, 5.00%, 11/01/21(c)			4,060				4,109,532
North Texas Tollway Authority, RB, Series A, 5.50%, 09/01/21(c)			2,310				2,319,818
San Antonio Public Facilities Corp., Refunding RB, 4.00%, 09/15/42			3,794				3,927,759
San Antonio Water System, Refunding RB, Series C, Junior Lien, 5.00%, 05/15/46			1,515				1,836,362
Tarrant County Cultural Education Facilities Finance Corp., RB, Series A, 5.00%, 05/15/23(c)			4,456				4,846,573
Texas Department of Housing & Community Affairs, RB, S/F Housing
Series A, (GNMA), 3.63%, 09/01/44			1,389				1,522,895
Series A, (GNMA), 3.00%, 09/01/45			905				956,502
Series A, (GNMA), 3.75%, 09/01/49			1,191				1,306,558
Series A, (GNMA), 3.00%, 03/01/50			905				956,502
Texas Water Development Board, RB, Series A, 4.00%, 10/15/49			5,020				5,979,071
							52,653,574
Virginia — 1.7%
Fairfax County Economic Development Authority, RB, 5.00%, 04/01/47(j)			2,320				2,836,455
Hampton Roads Transportation Accountability Commission, RB
Series A, Senior Lien, 5.00%, 07/01/48			1,996				2,439,459
Series A, Senior Lien, 5.50%, 07/01/57(j)			1,338				1,677,591
Series A, Senior Lien, 4.00%, 07/01/60(j)			2,175				2,580,616
Virginia Small Business Financing Authority, Refunding RB, Series A, 4.00%, 12/01/49			5,320				6,248,926
							15,783,047
Washington — 0.6%
Washington Health Care Facilities Authority, Refunding RB, Series B, 4.13%, 08/15/43			1,445				1,625,269
Washington State Convention Center Public Facilities District, RB, 5.00%, 07/01/58			2,999				3,806,986
							5,432,255
West Virginia — 0.2%
Morgantown Utility Board, Inc., RB, Series B, 4.00%, 12/01/48(j)			1,511				1,758,725
Wisconsin — 1.0%
Wisconsin Health & Educational Facilities Authority, Refunding RB 4.00%, 12/01/46			2,059				2,346,450

Security		Par (000)				Value
Wisconsin (continued)
Wisconsin Health & Educational Facilities Authority, Refunding RB (continued)
4.00%, 12/15/49(j)		$	2,140			$	2,512,681
Wisconsin Housing & Economic Development Authority, RB, M/F Housing
Series A, 4.10%, 11/01/43			1,342				1,494,068
Series A, 4.30%, 11/01/53			1,395				1,535,016
Series A, 4.45%, 05/01/57			1,678				1,867,585
							9,755,800
Total Municipal Bonds Transferred to Tender Option Bond Trusts — 39.3% (Cost: $341,961,998)							369,922,300
Total Long-Term Investments — 157.2% (Cost: $1,319,695,252)							1,479,760,202
		Shares
Short-Term Securities
Money Market Funds — 1.0%
BlackRock Liquidity Funds, MuniCash, Institutional Class, 0.01%(k)(l)			8,879,419				8,881,194
Total Short-Term Securities — 1.0% (Cost: $8,881,194)							8,881,194
Total Investments — 158.2% (Cost: $1,328,576,446)							1,488,641,396
Other Assets Less Liabilities — 0.9%							9,011,403
Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (22.2)%							(208,578,237	)
VMTP Shares at Liquidation Value — (36.9)%							(347,800,000	)
Net Assets Applicable to Common Shares — 100.0%						$	941,274,562

^(a) Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.

^(b) Step coupon security. Coupon rate will either increase (step-up bond) or decrease (step-down bond) at regular intervals until maturity. Interest rate shown reflects the rate currently in effect.

^(c)  U.S. Government securities held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

^(d) Zero-coupon bond.

^(e) Security is collateralized by municipal bonds or U.S. Treasury obligations.

^(f)  Variable rate security. Interest rate resets periodically. The rate shown is the effective interest rate as of period end. Security description also includes the reference rate and spread if published and available.

^(g) Issuer filed for bankruptcy and/or is in default.

^(h) Non-income producing security.

⁽ⁱ⁾ Represent bonds transferred to a TOB Trust in exchange of cash and residual certificates received by the Fund. These bonds serve as collateral in a secured borrowing.

^(j) All or a portion of the security is subject to a recourse agreement. The aggregate maximum potential amount the Fund could ultimately be required to pay under the agreements, which expire between May 2, 2022 to November 15, 2051, is $37,462,369.

^(k) Affiliate of the Fund.

^(l) Annualized 7-day yield as of period end.

14

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD)

Affiliates

Investments in issuers considered to be affiliate(s) of the Fund during the period ended July 31, 2021 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer		Value at 04/30/21				Purchases at Cost				Proceeds from Sales				Net Realized Gain (Loss)				Change in Unrealized Appreciation (Depreciation)				Value at 07/31/21				Shares Held at 07/31/21				Income				Capital Gain Distributions from Underlying Funds
BlackRock Liquidity Funds, MuniCash, Institutional Class		$	7,843,901			$	1,037,293	(a)		$	—			$	—			$	—			$	8,881,194				8,879,419			$	159			$	—

^(a) Represents net amount purchased (sold).

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

Description		Number of Contracts				Expiration Date				Notional Amount (000)		Value/ Unrealized Appreciation (Depreciation)
Short Contracts
10-Year U.S. Treasury Note			108				09/21/21			$    14,529		$	(194,077	)
U.S. Long Bond			80				09/21/21			13,198			(549,161	)
5-Year U.S. Treasury Note			80				09/30/21			9,959			(85,478	)
												$	(828,716	)

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

• Level 1 – Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Fund has the ability to access;

• Level 2 – Other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market–corroborated inputs); and

• Level 3 – Unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the BlackRock Global Valuation Methodologies Committee’s (the “Global Valuation Committee’s”) assumptions used in determining the fair value of financial instruments).

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the Global Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. The categorization of a value determined for financial instruments is based on the pricing transparency of the financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Fund’s policy regarding valuation of financial instruments, refer to its most recent financial statements.

The following table summarizes the Fund’s financial instruments categorized in the fair value hierarchy. The breakdown of the Fund’s financial instruments into major categories is disclosed in the Schedule of Investments above.

		Level 1				Level 2				Level 3				Total
Assets
Investments
Long-Term Investments
Municipal Bonds		$	—			$	1,109,837,902			$	—			$	1,109,837,902
Municipal Bonds Transferred to Tender Option Bond Trusts			—				369,922,300				—				369,922,300

SCHEDULES OF INVESTMENTS 15

Schedule of Investments  (unaudited) (continued) July 31, 2021 BlackRock MuniHoldings Fund, Inc. (MHD)

Fair Value Hierarchy as of Period End (continued)

		Level 1				Level 2				Level 3				Total
Short-Term Securities
Money Market Funds		$	8,881,194			$	—			$	—			$	8,881,194
		$	8,881,194			$	1,479,760,202			$	—			$	1,488,641,396
Derivative Financial Instruments(a)
Liabilities
Interest Rate Contracts		$	(828,716	)		$	—			$	—			$	(828,716	)

^(a)  Derivative financial instruments are futures contracts. Futures contracts are valued at the unrealized appreciation (depreciation) on the instrument.

The Fund may hold assets and/or liabilities in which the fair value approximates the carrying amount for financial reporting purposes. As of period end, such assets and/or liabilities are categorized within the fair value hierarchy as follows:

		Level 1				Level 2				Level 3				Total
Liabilities
TOB Trust Certificates		$	—			$	(208,545,272	)		$	—			$	(208,545,272	)
VMTP Shares at Liquidation Value			—				(347,800,000	)			—				(347,800,000	)
		$	—			$	(556,345,272	)		$	—			$	(556,345,272	)

Portfolio Abbreviation

AGC		Assured Guaranty Corp.
AGM		Assured Guaranty Municipal Corp.
AMT		Alternative Minimum Tax
ARB		Airport Revenue Bonds
BAM		Build America Mutual Assurance Co.
CAB		Capital Appreciation Bonds
COP		Certificates of Participation
FHA		Federal Housing Administration
FHLMC		Federal Home Loan Mortgage Corp.
FNMA		Federal National Mortgage Association
GNMA		Government National Mortgage Association
GO		General Obligation Bonds
GTD		GTD Guaranteed
INS		Insured
M/F		Multi-Family
NPFGC		National Public Finance Guarantee Corp.
PSF		Permanent School Fund
PSF-GTD		Permanent School Fund Guaranteed
RB		Revenue Bond
S/F		Single-Family
SAB		Special Assessment Bonds
SAW		State Aid Withholding
SONYMA		State of New York Mortgage Agency
ST		Special Tax
TA		Tax Allocation

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