BlackRock MuniHoldings California Quality Fund NPORTP (Apr 2022 report)

Schedule of Investments (unaudited)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

Municipal Bonds

California — 108.6%

Corporate — 1.5%
California Community Choice Financing Authority, RB, Series B-1, 4.00%, 02/01/52^(a)	$	11,665	$	11,805,213
California Municipal Finance Authority, RB, Series A, AMT, 4.00%, 07/15/29		3,255		3,133,153
California Pollution Control Financing Authority, RB, AMT, 4.75%, 11/01/46		4,000		4,090,360

				19,028,726

County/City/Special District/School District — 30.8%
Beverly Hills Unified School District California, GO, Series A, 3.00%, 08/01/41		2,000		1,757,092
California Municipal Finance Authority, RB, 5.00%, 06/01/43		2,000		2,186,334
California Statewide Communities Development Authority, SAB
Series A, 5.00%, 09/02/39		190		200,798
Series A, 5.00%, 09/02/44		110		115,620
Series A, 5.00%, 09/02/48		110		115,373
Series B, 4.00%, 09/02/40		570		539,173
Series B, 4.00%, 09/02/50		690		626,078
Series C, 4.00%, 09/02/40		4,015		3,797,861
Series C, 4.00%, 09/02/50		2,885		2,617,731
California Statewide Communities Development Authority, SAB, S/F Housing
5.00%, 09/02/39		1,000		1,056,830
5.00%, 09/02/40		950		1,007,985
5.00%, 09/02/44		1,150		1,208,759
5.00%, 09/02/49		1,675		1,756,430
4.00%, 09/02/50		760		700,586
5.00%, 09/02/50		760		800,134
Series C, 5.00%, 09/02/39		850		898,306
Series C, 5.00%, 09/02/44		130		136,642
Series C, 5.00%, 09/02/49		865		907,052
California Statewide Communities Development Authority, ST
4.00%, 09/01/41		700		659,291
4.00%, 09/01/51		1,350		1,213,773
Chabot-Las Positas Community College District, GO, Series A, 4.00%, 08/01/47		1,500		1,528,923
Chaffey Joint Union High School District, GO, CAB^(b)
Series C, 0.00%, 08/01/32		500		340,555
Series C, 0.00%, 08/01/33		1,000		649,755
Series C, 0.00%, 08/01/34		1,015		630,426
Series C, 0.00%, 08/01/35		1,090		646,564
Series C, 0.00%, 08/01/36		1,000		566,681
Series C, 0.00%, 08/01/37		1,300		703,147
Series C, 0.00%, 08/01/38		1,255		648,354
Series C, 0.00%, 08/01/39		1,500		740,913
Series C, 0.00%, 08/01/40		3,705		1,744,051
Series C, 0.00%, 08/01/41		610		273,072
Series C, 0.00%, 02/01/42		700		306,089
ChiNo.Valley Unified School District, GO, Series B, 5.00%, 08/01/55		1,285		1,400,604
ChiNo.Valley Unified School District, GOL, Series B, 4.00%, 08/01/45		640		627,999
City & County of San Francisco California, ARB COP, Series C, AMT, 5.25%, 03/01/32		1,050		1,071,926


Security	Par (000)		Value

County/City/Special District/School District (continued)
City & County of San Francisco California, Refunding COP, Series A, 4.00%, 04/01/44	$	11,300	$	11,447,228
City of Dixon California, ST, 4.00%, 09/01/45		1,000		953,292
City of Los Angeles California, COP, (AMBAC), 6.20%, 11/01/31		1,800		1,805,135
City of Roseville California, ST, 4.00%, 09/01/50		1,000		941,746
City of Sacramento California Transient Occupancy Tax Revenue, RB
Series A, 5.00%, 06/01/43		1,230		1,318,382
Series A, 5.00%, 06/01/48		3,750		3,995,344
Coronado Community Development Agency Successor Agency, Refunding TA, Series A, 5.00%, 09/01/33		1,785		1,886,502
El Dorado Irrigation District, Refunding RB, Series A, (AGM), 5.25%, 03/01/24^(c)		15,000		15,792,120
El Monte City School District, GO, Series B, 5.50%, 08/01/46		4,265		4,562,300
Elk Grove Unified School District, GO, 4.00%, 08/01/46		10,000		9,982,110
Fowler Unified School District, GO, Series A, (BAM), 5.25%, 08/01/46		3,700		3,984,637
Fremont Union High School District, Refunding GO, 4.00%, 08/01/40		2,500		2,529,048
Garden Grove Unified School District, GO, Series C, 5.25%, 08/01/23^(c)		8,225		8,539,114
Glendale Community College District, GO, Series A, 4.00%, 08/01/46		8,000		8,178,128
Glendale Community College District, GO, CAB^(b)
Series B, 0.00%, 08/01/43		1,875		806,858
Series B, 0.00%, 08/01/44		3,315		1,305,467
Series B, 0.00%, 02/01/45		3,475		1,277,730
Hayward Unified School District, GO, Series A, (BAM), 4.00%, 08/01/48		4,000		3,959,804
Kern Community College District, GO^(c)
Series C, 5.25%, 11/01/23		11,430		11,935,640
Series C, 5.75%, 11/01/23		12,085		12,707,945
Livermore Valley Joint Unified School District/CA, GO, 4.00%, 08/01/46^(d)		15,000		14,955,420
Los Alamitos Unified School District, Refunding GO, 5.25%, 08/01/23^(c)		3,700		3,840,337
Los Angeles County Facilities Inc., RB
5.00%, 12/01/28^(c)		7,130		8,174,652
5.00%, 12/01/51		11,140		12,089,496
Los Angeles County Metropolitan Transportation Authority Sales Tax Revenue, Refunding RB
Series A, 5.00%, 07/01/42		2,135		2,323,365
Series A, 5.00%, 07/01/44		2,000		2,200,562
Los Angeles County Public Works Financing Authority, Refunding RB
Series D, 5.00%, 12/01/45		1,430		1,497,522
Series F, 4.00%, 12/01/46		4,190		4,167,994
Menifee Union School District, GO, Series B, (BAM), 4.00%, 08/01/43		5,370		5,431,014
Mount San Antonio Community College District, Refunding GO
Series A, 5.00%, 08/01/23^(c)		4,500		4,657,532
Series A, Election 2018, 5.00%, 08/01/44		8,000		8,786,240
Mount San Jacinto Community College District, GO
Series A, 5.00%, 08/01/35		3,565		3,790,793
Series C, 2.38%, 08/01/51		6,115		3,908,097


1

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

County/City/Special District/School District (continued)
Natomas Unified School District, GO, (BAM), 4.00%, 08/01/42	$	5,000	$	5,043,405
Newport Mesa Unified School District Refunding GO, CAB, 0.00%, 08/01/45^(b)		8,485		3,203,775
Orange County Community Facilities District, ST
4.00%, 08/15/40		820		798,177
4.00%, 08/15/50		755		710,393
Perris Union High School District, GO, Series B, (BAM), 5.25%, 09/01/39		2,715		2,903,657
Perris Union High School District, Refunding COP, (BAM), 4.00%, 10/01/43		10,000		10,169,440
Rio Elementary School District, GO, Series A, (AGM), 5.25%, 08/15/25^(c)		5,865		6,375,507
Riverside County Public Financing Authority, RB, 5.25%, 11/01/25^(c)		4,000		4,372,108
Riverside County Public Financing Authority, Refunding TA, Series A, (BAM), 4.00%, 10/01/40		9,500		9,844,717
Riverside County Redevelopment Successor Agency, Refunding TA, Series A, (AGM), 4.00%, 10/01/37		6,000		6,097,866
RNR School Financing Authority, ST
Series A, (BAM), 5.00%, 09/01/37		1,500		1,607,219
Series A, (BAM), 5.00%, 09/01/41		3,000		3,196,263
San Benito High School District, GO, 4.00%, 08/01/48		5,000		4,898,220
San Bernardino County Transportation Authority, RB, Series A, 5.25%, 03/01/40		9,045		9,466,054
San Diego Unified School District, GO, Series B, 3.25%, 07/01/48		6,000		5,014,182
San Diego Unified School District, GO, CAB^(b)
Series K-2, 0.00%, 07/01/38		2,755		1,429,696
Series K-2, 0.00%, 07/01/39		3,340		1,655,651
Series K-2, 0.00%, 07/01/40		4,285		2,024,872
San Francisco Bay Area Rapid Transit District, GO
Series A, 4.00%, 08/01/42		6,000		6,180,360
Series C-1, 3.00%, 08/01/50		2,500		2,057,088
San Jose Financing Authority, Refunding RB, Series A, 5.00%, 06/01/23^(c)		14,175		14,605,419
San Luis Obispo County Community College District, Refunding GO, Series B, 4.00%, 08/01/43		3,555		3,650,562
San Marcos Redevelopment Agency Successor Agency, Refunding TA
Series A, 5.00%, 10/01/32		1,700		1,819,796
Series A, 5.00%, 10/01/33		1,125		1,200,124
Santa Clara County Financing Authority, RB, Series A, 4.00%, 05/01/45		15,000		15,138,795
Santa Clara Unified School District, GO, 4.00%, 07/01/48		15,000		15,155,565
Santa Clarita Community College District, Refunding GO, 4.00%, 08/01/46		10,000		10,170,990
South San Francisco Public Facilities Financing Authority, RB, 4.00%, 06/01/46		4,890		4,892,557
Transbay Joint Powers Authority, TA
Series A, 5.00%, 10/01/49		2,500		2,699,980
Series B, Subordinate, 5.00%, 10/01/35		300		337,084
Series B, Subordinate, 5.00%, 10/01/38		600		670,624
Washington Township Health Care District, GO, Series B, Election 2004, 5.50%, 08/01/38		3,250		3,379,854


Security	Par (000)		Value

County/City/Special District/School District (continued)
West Contra Costa Unified School District, GO^(c)
Series A, 5.50%, 08/01/39	$	7,500	$	7,803,982
Series B, 5.50%, 08/01/39		6,195		6,449,689
West Valley-Mission Community College District, GO, Series A, 4.00%, 08/01/44		3,420		3,619,495

				396,555,627

Education — 11.9%
California Educational Facilities Authority, RB
Series A, 5.00%, 10/01/53		10,000		10,939,690
Series V-1, 5.00%, 05/01/49		5,800		7,043,497
California Enterprise Development Authority, RB
Series A, 5.00%, 08/01/50		650		673,136
Series A, 5.00%, 08/01/55		1,000		1,033,911
Series A, 5.00%, 08/01/57		600		619,812
California Enterprise Development Authority, Refunding RB^(e)
4.00%, 06/01/51		625		540,013
4.00%, 06/01/61		345		282,348
California Municipal Finance Authority, RB
3.00%, 10/01/41		965		828,809
4.00%, 10/01/46		965		973,268
4.00%, 10/01/51		1,150		1,146,165
(BAM), 3.00%, 05/15/54		3,000		2,269,773
Series A, 5.50%, 08/01/34^(e)		500		509,664
Series A, 5.00%, 10/01/39^(e)		680		700,112
Series A, 5.00%, 10/01/49^(e)		1,145		1,165,104
Series A, 5.00%, 10/01/57^(e)		2,255		2,281,489
California Municipal Finance Authority, Refunding RB
5.00%, 08/01/39		2,040		2,163,828
5.00%, 08/01/48		1,245		1,289,548
Series B, 5.00%, 01/01/42		1,750		1,870,220
California Public Finance Authority, RB, Series A, 5.00%, 07/01/54^(e)		195		169,786
California School Finance Authority, RB
6.65%, 07/01/33		595		610,259
5.00%, 06/01/40^(e)		660		675,406
6.90%, 07/01/43		1,330		1,363,261
5.00%, 06/01/50^(e)		1,030		1,042,515
5.00%, 08/01/52^(d)(e)		1,875		1,916,092
5.00%, 06/01/59^(e)		1,645		1,655,790
(NPFGC), 5.00%, 06/01/61^(e)		820		809,910
5.00%, 08/01/61^(d)(e)		5,315		5,364,456
4.00%, 06/01/51^(e)		800		686,830
Series A, 6.00%, 07/01/33		1,500		1,550,479
Series A, 5.00%, 06/01/39^(e)		740		742,210
Series A, (NPFGC), 5.00%, 06/01/41^(e)		440		450,941
Series A, 6.30%, 07/01/43		3,000		3,106,248
Series A, 5.00%, 07/01/49^(e)		1,350		1,391,093
Series A, (NPFGC), 5.00%, 06/01/51^(e)		600		604,242
Series A, 5.00%, 06/01/58^(e)		9,215		9,051,252
Series A, 5.00%, 07/01/59^(e)		2,565		2,543,159
Series A, 4.00%, 06/01/61^(e)		1,300		1,056,507
Series B, 4.00%, 07/01/45^(e)		1,035		930,827
California School Finance Authority, Refunding RB^(e)
5.00%, 08/01/46		1,145		1,161,102
Series A, 5.00%, 07/01/36		755		777,560


SCHEDULEOF INVESTMENTS		2

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

Education (continued)
California Statewide Communities Development Authority, RB, Series A, 5.00%, 05/15/37	$	4,000	$	4,329,448
California Statewide Communities Development Authority, Refunding RB, 5.00%, 05/15/40		2,250		2,398,160
Hastings Campus Housing Finance Authority, RB
Series A, 5.00%, 07/01/45		1,870		1,923,863
Series A, 5.00%, 07/01/61		9,360		9,381,827
University of California, RB, Series M, 5.00%, 05/15/47		15,000		15,970,020
University of California, Refunding RB
5.25%, 05/15/44^(c)(d)		19,420		20,348,493
Series AM, 5.25%, 05/15/36		2,970		3,124,375
Series AO, 5.00%, 05/15/40		5,430		5,724,062
Series AZ, 4.00%, 05/15/48		6,000		5,967,312
Series BE, 4.00%, 05/15/47		10,000		9,944,670

				153,102,542

Health — 13.6%
California Health Facilities Financing Authority RB
5.00%, 08/15/55^(d)		9,000		9,360,621
RB, 5.00%, 11/15/49		5,000		5,347,705
California Health Facilities Financing Authority, RB
4.00%, 11/15/47		825		793,356
Series A, 5.00%, 11/15/35		1,960		2,135,702
Series A, 4.00%, 11/15/42		450		456,445
California Health Facilities Financing Authority, Refunding RB
5.00%, 08/01/40		700		766,182
3.00%, 08/15/51		8,975		7,287,108
Series A, 5.00%, 07/01/23^(c)		10,000		10,327,280
Series A, 5.00%, 10/01/24^(c)		4,745		5,037,192
Series A, 5.00%, 10/01/38		6,225		6,455,039
Series A, 4.00%, 03/01/39		895		907,697
Series A, 4.00%, 03/01/43		1,315		1,328,514
Series A, 4.00%, 08/15/48		7,250		7,179,639
Series A, 4.00%, 04/01/49		3,570		3,455,478
Series B, 5.00%, 11/15/26^(c)		3,385		3,738,922
Series B, 5.00%, 11/15/46		7,280		7,750,434
California Municipal Finance Authority, RB
4.00%, 11/15/52		1,000		964,031
4.00%, 11/15/56		1,100		1,044,703
Series A, 3.00%, 02/01/46		5,000		3,896,180
California Municipal Finance Authority, Refunding RB
Series A, 5.00%, 02/01/37		3,110		3,304,891
Series A, 5.00%, 11/01/39^(e)		600		627,541
Series A, 5.00%, 02/01/42		9,250		9,753,977
Series A, 5.00%, 11/01/49^(e)		675		697,041
California Statewide Communities Development Authority, RB
4.25%, 01/01/43		3,450		3,474,730
4.00%, 08/01/45		5,000		4,940,690
4.00%, 07/01/48		4,000		3,935,232
California Statewide Communities Development Authority, Refunding RB
4.00%, 04/01/42		5,600		5,628,896
4.00%, 04/01/47		3,975		3,942,445
5.00%, 04/01/47		2,995		3,166,116
Series A, 5.00%, 08/15/51		1,635		1,756,551
Series A, 5.00%, 12/01/53		1,000		1,094,158
Series A, 4.00%, 12/01/57		6,500		6,535,730


Security	Par (000)		Value

Health (continued)
California Statewide Communities Development Authority, Refunding RB (continued) Series A, 5.00%, 12/01/57	$	1,750	$	1,912,438
Regents of the University of California Medical Center Pooled Revenue, RB, 5.00%, 05/15/47^(d)		38,450		42,257,088
Regents of the University of California Medical Center Pooled Revenue, Refunding RB, Series L, 5.00%, 05/15/47		4,000		4,176,792

				175,436,544

Housing — 11.8%
California Community Housing Agency, RB, M/F Housing^(e)
4.00%, 08/01/46		2,495		1,969,897
3.00%, 08/01/56		3,595		2,521,220
3.00%, 02/01/57		6,005		4,146,703
4.00%, 02/01/50		1,105		837,004
4.00%, 08/01/51		5,635		4,384,041
Series A, 5.00%, 04/01/49		9,400		8,079,150
Series A, 4.00%, 02/01/56		6,115		5,011,573
Series A-1, 4.00%, 08/01/50		1,160		912,113
Series A-2, 4.00%, 08/01/47		3,735		3,004,583
California Housing Finance Agency, RB, M/F Housing
Class A, 3.25%, 08/20/36		4,969		4,762,549
Class A, Class A, (FHLMC), 3.75%, 03/25/35		14,896		14,836,517
Series 2021-1, Class A, 3.50%, 11/20/35		3,288		3,223,719
Series A, 4.25%, 01/15/35		2,248		2,349,049
California Housing Finance, RB, M/F Housing, Series 2, Class A, 4.00%, 03/20/33		7,935		8,168,396
City & County of San Francisco California, RB, M/F Housing, Series J, (FNMA), 2.55%, 07/01/39		5,000		4,330,660
CMFA Special Finance Agency VII, RB, M/F Housing, 4.00%, 08/01/47^(e)		2,080		1,591,206
CMFA Special Finance Agency VIII, RB, M/F Housing, 3.00%, 08/01/56^(e)		2,340		1,648,928
CMFA Special Finance Agency XII, RB, M/F Housing, Series A, 3.25%, 02/01/57^(e)		2,605		1,954,404
CMFA Special Finance Agency, RB, M/F Housing^(e)
Series A, 4.00%, 12/01/45		2,805		2,255,186
Series A-2, 4.00%, 08/01/45		2,750		2,163,178
CSCDA Community Improvement Authority, RB, M/F Housing^(e)
4.00%, 10/01/46		5,285		4,212,647
2.65%, 12/01/46		3,545		2,794,839
4.00%, 07/01/56		7,520		6,137,652
4.00%, 08/01/56		10,990		9,608,876
3.00%, 09/01/56		1,475		1,038,149
3.00%, 02/01/57		1,625		1,139,122
3.25%, 04/01/57		4,710		3,429,572
4.00%, 04/01/57		4,910		3,555,974
4.00%, 05/01/57		5,660		4,435,023
Class 2, 4.00%, 06/01/58		7,480		5,921,190
Series A, 5.00%, 07/01/51		1,075		1,029,000
Series B, 4.00%, 02/01/57		1,585		1,174,539
Senior Lien, 3.00%, 06/01/47		2,705		2,079,872
Senior Lien, 3.13%, 06/01/57		3,530		2,461,127
Class 2, Senior Lien, 4.00%, 12/01/58		3,770		3,028,204
Series B, Sub Lien, 4.00%, 12/01/59		575		357,632


3

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

Housing (continued)
Freddie Mac Multifamily ML Certificates, RB, M/F Housing, Series CA, Class A, 3.35%, 11/25/33	$	17,807	$	17,485,158
Santa Clara County Housing Authority, RB, M/F Housing, Series A, AMT, 6.00%, 08/01/41		3,500		3,503,983

				151,542,635

State — 7.7%
California State Public Works Board, RB
4.00%, 05/01/47		9,000		9,088,119
Series I, 5.50%, 11/01/33		4,590		4,807,410
City of Roseville California, ST, 4.00%, 09/01/45		100		95,529
State of California GO, 4.00%, 03/01/46^(d)		10,000		10,303,200
State of California, GO
4.00%, 04/01/49		5,550		5,656,283
4.00%, 03/01/50^(d)		5,000		4,981,175
State of California, Refunding GO
5.00%, 09/01/35		9,000		9,769,419
4.00%, 03/01/36		20,000		20,679,280
4.00%, 10/01/41		1,000		1,024,739
5.00%, 08/01/45		5,690		6,009,795
4.00%, 04/01/49		15,385		15,617,144
Various Purposes, 4.00%, 03/01/40		11,000		11,197,582

				99,229,675

Tobacco — 3.1%
California County Tobacco Securitization Agency, Refunding RB
4.00%, 06/01/49		755		739,917
5.00%, 06/01/50		560		597,055
Series A, 4.00%, 06/01/49		2,105		2,105,927
Series B-1, Subordinate, 4.00%, 06/01/49		325		315,000
California County Tobacco Securitization Agency, Refunding RB, CAB^(b)
0.00%, 06/01/55		7,575		1,481,640
Series B-2, Subordinate, 0.00%, 06/01/55		8,895		1,567,094
Golden State Tobacco Securitization Corp., Refunding RB^(c)
Series A, (AGM-CR SAP), 5.00%, 06/01/25		9,765		10,504,621
Series A-1, 5.00%, 06/01/28		5,390		6,134,650
Golden State Tobacco Securitization Corp., Refunding RB, CAB, Series B, Subordinate, 0.00%, 06/01/66^(b)		21,730		2,380,435
Tobacco Securitization Authority of Southern California, Refunding RB, 5.00%, 06/01/48		8,330		8,976,610
Tobacco Securitization Authority of Southern California, Refunding RB, CAB, 0.00%, 06/01/54^(b)		25,600		4,676,070

				39,479,019

Transportation — 20.3%
Alameda Corridor Transportation Authority, Refunding RB, Series B, Sub Lien, 5.00%, 10/01/35		3,000		3,221,112
Bay Area Toll Authority, Refunding RB
4.00%, 04/01/42		5,000		5,023,915
Sub-Series S-8, Subordinate, 3.00%, 04/01/54		13,180		10,548,178
California Municipal Finance Authority, ARB
AMT, Senior Lien, 5.00%, 12/31/43		6,500		6,790,166
AMT, Senior Lien, 4.00%, 12/31/47		21,415		19,592,305
AMT, Senior Lien, (AGM), 4.00%, 12/31/47		2,845		2,831,210
City of Long Beach California Harbor Revenue, ARB, Series A, AMT, 5.00%, 05/15/40		4,915		5,233,408
City of Los Angeles Department of Airports, ARB Series A, AMT, 5.25%, 05/15/38		1,735		1,875,910


Security	Par (000)		Value

Transportation (continued)
City of Los Angeles Department of Airports, ARB (continued)
Series A, AMT, 5.00%, 05/15/40	$	3,830	$	3,983,874
Series B, AMT, 5.00%, 05/15/36		2,865		3,004,901
Series C, AMT, 5.00%, 05/15/45		5,000		5,436,735
Series D, AMT, 5.00%, 05/15/35		4,000		4,165,576
Series D, AMT, 5.00%, 05/15/36		3,000		3,124,488
Sub-Series A, AMT, 5.00%, 05/15/47		6,725		7,029,905
Series C, AMT, Subordinate, 5.00%, 05/15/38		3,215		3,415,282
Series C, AMT, Subordinate, 5.00%, 05/15/44		5,955		6,293,226
City of Los Angeles Department of Airports, Refunding ARB
5.00%, 05/15/43		7,000		7,713,685
AMT, 4.00%, 05/15/42		1,000		985,813
AMT, 5.00%, 05/15/43		2,175		2,326,791
AMT, 3.25%, 05/15/49		1,500		1,179,215
Series D, AMT, 4.00%, 05/15/39		4,305		4,279,975
County of Sacramento California Airport System Revenue, Refunding RB
Series A, 5.00%, 07/01/41		13,290		14,039,543
Sub-Series B, 5.00%, 07/01/41		3,000		3,181,269
Series C, AMT, 5.00%, 07/01/37		3,000		3,206,493
Los Angeles County Metropolitan Transportation Authority Sales Tax Revenue, Refunding RB, Series A, 5.00%, 07/01/41		1,300		1,417,424
Norman Y Mineta San Jose International Airport SJC, Refunding RB
Series A, AMT, 5.00%, 03/01/32		1,800		1,978,565
Series A, AMT, 5.00%, 03/01/41		6,150		6,457,814
Series A, AMT, 5.00%, 03/01/47		18,540		19,691,353
Port of Los Angeles, Refunding ARB, Series A, AMT, 5.00%, 08/01/44		700		717,520
Riverside County Transportation Commission, Refunding RB
2nd Lien, 4.00%, 06/01/47		715		675,026
Senior Lien, 4.00%, 06/01/46		1,235		1,177,496
Senior Lien, 3.00%, 06/01/49		6,000		4,397,004
San Diego County Regional Airport Authority, ARB, Series B, AMT, 5.00%, 07/01/47		6,000		6,266,844
San Diego County Regional Airport Authority, Refunding ARB
Series A, 5.00%, 07/01/42		4,275		4,537,750
AMT, Subordinate, 5.00%, 07/01/37		350		377,030
AMT, Subordinate, 5.00%, 07/01/38		350		376,362
AMT, Subordinate, 5.00%, 07/01/39		500		537,316
AMT, Subordinate, 5.00%, 07/01/40		700		751,339
San Francisco City & County Airport Comm-San Francisco International Airport, Refunding ARB
4.00%, 05/01/52		5,500		5,383,532
Series 2020, AMT, 4.00%, 05/01/39		6,800		6,600,971
Series A, AMT, 5.25%, 05/01/33		3,340		3,410,334
Series A, AMT, 5.00%, 05/01/40		3,785		3,859,852
Series A, AMT, 5.00%, 05/01/42		5,050		5,280,522
Series A, AMT, 5.00%, 05/01/44		16,160		17,012,995
Series A, AMT, 5.00%, 05/01/47		5,000		5,216,755
Series A, AMT, 5.00%, 05/01/49		3,500		3,698,898
Series B, AMT, 5.00%, 05/01/41		5,000		5,270,480
Series D, AMT, 5.00%, 05/01/43		7,715		8,122,776


SCHEDULEOF INVESTMENTS		4

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

Transportation (continued)
San Francisco City & County Airport Comm-San Francisco International Airport, Refunding ARB (continued)
Series D, AMT, 5.25%, 05/01/48	$	2,250	$	2,411,852
Series E, AMT, 5.00%, 05/01/45^(d)		16,250		17,262,066

				261,372,851

Utilities — 7.9%
City of Richmond California Wastewater Revenue, Refunding RB, Series A, 5.00%, 08/01/42		5,185		5,655,907
City of Riverside California Electric Revenue, Refunding RB, Series A, 5.00%, 10/01/43		3,500		3,883,327
City of San Francisco California Public Utilities Commission Water Revenue, Refunding RB, 5.00%, 11/01/36		2,335		2,476,550
East Bay Municipal Utility District Water System Revenue, RB
Series A, 4.00%, 06/01/45		4,585		4,682,748
Series A, 5.00%, 06/01/49		11,190		12,387,308
Eastern Municipal Water District, Refunding RB, Series A, 5.00%, 07/01/42		3,000		3,198,051
Los Angeles Department of Water & Power Water System Revenue, Refunding RB
Series A, 5.00%, 07/01/47		3,475		3,908,228
Series B, 5.00%, 07/01/43		5,940		6,530,680
Los Angeles Department of Water & Power, RB, Series B, 5.00%, 07/01/47		925		1,046,766
Los Angeles Department of Water, RB, Series A, 5.00%, 07/01/42		12,265		13,226,367
Sacramento Municipal Utility District, Refunding RB, Series H, 4.00%, 08/15/45^(d)		20,000		20,359,880
San Diego Public Facilities Financing Authority, Refunding RB
Series A, Subordinate, 5.00%, 08/01/43		9,655		10,583,241
Series A, Subordinate, 5.25%, 08/01/47		5,000		5,557,030
San Francisco City & County Public Utilities Commission Power Revenue, RB, Series A, 5.00%, 11/01/39		5,245		5,503,159
San Juan Water District, Refunding RB, 5.25%, 02/01/33		1,095		1,096,544
San Mateo Foster City Public Financing Authority, RB, 4.00%, 08/01/44		2,000		1,979,268

				102,075,054


Total Municipal Bonds in California				1,397,822,673

Puerto Rico — 5.2%

State — 5.0%
Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB
Series A-1, Restructured, 4.75%, 07/01/53		10,719		10,852,130
Series A-1, Restructured, 5.00%, 07/01/58		19,006		19,454,161
Series A-2, Restructured, 4.33%, 07/01/40		5,766		5,717,612
Series A-2, Restructured, 4.78%, 07/01/58		2,416		2,457,007
Series B-1, Restructured, 4.75%, 07/01/53		1,583		1,602,379
Series B-1, Restructured, 5.00%, 07/01/58		8,899		9,108,020
Series B-2, Restructured, 4.33%, 07/01/40		7,022		6,988,344


Security	Par (000)		Value

State (continued)
Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB (continued)
Series B-2, Restructured, 4.78%, 07/01/58	$	1,535	$	1,553,421
Puerto Rico Sales Tax Financing Corp. Sales Tax Revenue, RB, CAB, Series A-1, Restructured, 0.00%, 07/01/46^(b)		26,291		7,386,640

				65,119,714

Tobacco — 0.0%
Children’s Trust Fund, Refunding RB, 5.50%, 05/15/39		95		97,228


Utilities — 0.2%
Puerto Rico Commonwealth Aqueduct & Sewer Authority, Refunding RB, Series A, Senior Lien, 5.00%, 07/01/33		2,185		2,193,401


Total Municipal Bonds in Puerto Rico				67,410,343


Total Municipal Bonds — 113.8% (Cost: $1,526,652,385)				1,465,233,016


Municipal Bonds Transferred to Tender Option Bond Trusts^(f)

California — 60.3%

County/City/Special District/School District — 20.0%
California Municipal Finance Authority, RB, 5.00%, 06/01/48		9,500		10,329,398
Fremont Union High School District, Refunding GO, Series A, 4.00%, 08/01/46		4,996		5,069,550
Los Angeles County Public Works Financing Authority, Refunding RB
Series A, 5.00%, 12/01/39		17,850		18,532,049
Series A, 5.00%, 12/01/44		14,095		14,586,760
Los Angeles Unified School District, GO, Election 2008, Series B-1, 5.25%, 07/01/42^(g)		7,075		7,746,955
Palomar Community College District, GO, Series C, 5.00%, 08/01/25		45,420		49,024,687
Riverside County Public Financing Authority, RB, 5.25%, 11/01/45		20,000		21,860,538
Sacramento Area Flood Control Agency, Refunding SAB, Series A, 5.00%, 10/01/43		19,995		21,622,180
San Luis Obispo County Community College District, Refunding GO, Series A, 4.00%, 08/01/40		13,170		13,395,190
San Mateo County Community College District, GO, Series A, 5.00%, 09/01/45		35,230		38,089,408
Santa Monica Community College District, GO, Series A, 5.00%, 08/01/43		10,000		10,865,215
Southwestern Community College District, GO, Series D, 5.00%, 08/01/44		10,820		11,672,686
West Valley-Mission Community College District, GO, Series B, 4.00%, 08/01/40		34,000		34,926,552

				257,721,168

Education — 11.3%
California State University, Refunding RB
4.00%, 11/01/45		7,980		7,770,496
Series A, 5.00%, 11/01/41		9,775		10,358,813
Series A, 5.00%, 11/01/42^(g)		13,430		14,377,090
Series A, 5.00%, 11/01/43		24,004		25,386,312
University of California, RB
0.00%, 11/15/43		2,000		1,943,060


5

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)


Security	Par (000)		Value

Education (continued)
University of California, RB (continued)
Series AM, 5.25%, 05/15/44	$	19,420	$	9,710,000
University of California, Refunding RB
5.25%, 05/15/44		11,950		12,521,300
Series AF, 5.00%, 05/15/39		5,000		5,119,075
Series AZ, 5.00%, 05/15/43^(g)		12,000		13,012,494
Series I, 5.00%, 05/15/40		42,980		44,939,696

				145,138,336

Health — 11.9%
California Health Facilities Financing Authority, RB
5.00%, 11/15/56		12,000		12,603,012
Series A, 5.00%, 11/15/41		11,000		11,938,427
Series A, 4.00%, 11/15/42		7,500		7,607,425
Series A, 5.00%, 08/15/52		24,520		25,399,361
Series B, 5.00%, 08/15/55		9,000		6,750,000
California Health Facilities Financing Authority, Refunding RB
Series A, 5.00%, 08/15/43		44,365		47,918,359
Series A, 4.00%, 10/01/47		11,015		10,997,239
Sub-Series A-2, 4.00%, 11/01/44		31,000		30,526,522

				153,740,345

State — 1.9%
State of California, GO^(g)
4.00%, 03/01/46		10,000		5,000,000
4.00%, 03/01/50		5,000		3,335,000
State of California, Refunding GO
5.00%, 08/01/37		10,975		12,099,691
5.25%, 10/01/39		3,000		3,271,006

				23,705,697

Transportation — 9.2%
Bay Area Toll Authority, Refunding RB^(g)
4.00%, 04/01/42		11,250		11,303,813
4.00%, 04/01/49		16,560		16,472,177
City of Los Angeles Department of Airports, ARB
Series A, AMT, 5.00%, 05/15/40		11,000		11,441,942
Series A, AMT, 5.00%, 05/15/45		10,045		10,417,307
Series B, AMT, 5.00%, 05/15/41		7,290		7,610,068
Series B, AMT, 5.00%, 05/15/46		5,000		5,201,450
Series D, AMT, 5.00%, 05/15/41		26,643		27,689,696
Los Angeles County Facilities Inc., RB, 5.00%, 12/01/51^(g)		11,420		12,666,370
San Diego County Regional Airport Authority, ARB^(g)
Series B, AMT, Subordinate, 4.00%, 07/01/56		5,002		4,667,018
Series B, AMT, Subordinate, 5.00%, 07/01/56		3,001		3,200,333
San Francisco City & County Airport Comm-San Francisco International Airport, Refunding ARB, AMT, Series E, 5.00%, 05/01/45^(g)		16,250		8,125,000

				118,795,174

Utilities — 6.0%
Beaumont Public Improvement Authority, RB, Series A, 5.00%, 09/01/49.		6,000		6,460,560
City of Los Angeles California Wastewater System Revenue, RB, Series A, 5.00%, 06/01/44		20,080		21,165,454


Security	Par (000)		Value

Utilities (continued)
City of Sacramento California Water Revenue, RB, 5.25%, 09/01/47	$	14,825	$	16,136,901
Los Angeles Ca Waste Water System Revenue, 4.00%, 06/01/52		10,000		10,012,393
Los Angeles Department of Water, Refunding RB, Series A, 5.00%, 07/01/46		8,413		8,943,917
Mountain House Public Financing Authority, RB, Series A, 4.00%, 12/01/55		4,500		4,628,988
Sacramento Municipal Utility District, Refunding RB, Series H, 4.00%, 08/15/45		20,000		10,000,000

				77,348,213


Total Municipal Bonds in California				776,448,933


Total Municipal Bonds Transferred to Tender Option Bond Trusts — 60.3% (Cost: $778,227,637)				776,448,933


Total Long-Term Investments — 174.1% (Cost: $2,304,880,022)				2,241,681,949


	Shares

Short-Term Securities

Money Market Funds — 5.3%
BlackRock Liquidity Funds California Money Fund, Institutional Class, 0.01%^(h)(i)		67,910,962		67,863,425


Total Short-Term Securities — 5.3% (Cost: $67,863,425)				67,863,425


Total Investments — 179.4% (Cost: $2,372,743,447)				2,309,545,374

Liabilities in Excess of Other Assets — (6.0)%				(76,611,258	)

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (32.5)%				(418,912,572	)

VMTP Shares at Liquidation Value, Net of Deferred Offering Costs — (40.9)%				(526,400,000	)


Net Assets Applicable to Common Shares — 100.0%			$	1,287,621,544

(a)	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.

(b)	Zero-coupon bond.

(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)	When-issued security.

(e)	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.

(f)	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.

(g)	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 April 1, 2025 to July 1, 2029, is $68,933,463.

(h)	Affiliate of the Fund.

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

For Fund compliance purposes, the Fund’s sector classifications refer to one or more of the sector sub-classifications used by one or more widely recognized market indexes or rating group indexes, and/or as defined by the investment adviser. These definitions may not apply for purposes of this report, which may combine such sector sub-classifications for reporting ease.


SCHEDULEOF INVESTMENTS		6

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

Affiliates

Investments in issuers considered to be affiliate(s) of the Fund during the period ended April 30, 2022 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:


Affiliated Issuer	Value at 07/31/21		Purchases at Cost			Proceeds from Sales		Net Realized Gain (Loss)			Change in Unrealized Appreciation (Depreciation)			Value at 04/30/22		Shares Held at 04/30/22		Income		Capital Gain Distributions from Underlying Funds
BlackRock Liquidity Funds California Money Fund, Institutional Class	$	19,391,202	$	48,495,420	^(a)	$	—	$	(15,432	)	$	(7,765	)	$	67,863,425		67,910,962	$	29,304	$	—

^(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		272		06/21/22	$	32,381	$	317,866
U.S. Long Bond		282		06/21/22		39,621		823,909
5-Year U.S. Treasury Note		449		06/30/22		50,541		283,721

							$	1,425,496

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	$	—	$	1,465,233,016	$	—	$	1,465,233,016
Municipal Bonds Transferred to Tender Option Bond Trusts		—		776,448,933		—		776,448,933


7

Schedule of Investments (unaudited) (continued)

April 30, 2022

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

Fair Value Hierarchy as of Period End (continued)


	Level 1		Level 2		Level 3		Total
Short-Term Securities
Money Market Funds	$	67,863,425	$	—	$	—	$	67,863,425

	$	67,863,425	$	2,241,681,949	$	—	$	2,309,545,374

Derivative Financial Instruments^(a)
Assets
Interest Rate Contracts	$	1,425,496	$	—	$	—	$	1,425,496

^(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	$	—	$	(418,578,687	)	$	—	$	(418,578,687	)
VMTP Shares at Liquidation Value		—		(526,400,000	)		—		(526,400,000	)

	$	—	$	(944,978,687	)	$	—	$	(944,978,687	)


Portfolio Abbreviation

AGM		Assured Guaranty Municipal Corp.

AGM-CR		AGM Insured Custodial Receipt

AMBAC		AMBAC Assurance Corp.

AMT		Alternative Minimum Tax

ARB		Airport Revenue Bonds

BAM		Build America Mutual Assurance Co.

CAB		Capital Appreciation Bonds

COP		Certificates of Participation

CR		Custodian Receipt

FHLMC		Federal Home Loan Mortgage Corp.

FNMA		Federal National Mortgage Association

GO		General Obligation Bonds

GOL		General Obligation Ltd.

M/F		Multi-Family

NPFGC		National Public Finance Guarantee Corp.

RB		Revenue Bond

S/F		Single-Family

SAB		Special Assessment Bonds

SAP		Subject to Appropriations

ST		Special Tax

TA		Tax Allocation


SCHEDULEOF INVESTMENTS		8

BlackRock MuniHoldings California Quality Fund (MUC) NPORT-PBlackRock MuniHoldings California Quality Fund, Inc. (Apr 2022 report)