BlackRock Science and Technology Trust II (BSTZ) NPORT-P BlackRock Science and Technology Trust II (Sep 2021 report)

Consolidated Schedule of Investments   (unaudited)  September 30, 2021 BlackRock Science and Technology Trust II (BSTZ) (Percentages shown are based on Net Assets)

Security	Shares		Value
Common Stocks
Aerospace & Defense — 0.3%
Astra Space, Inc., (Acquired 08/20/21, Cost: $12,000,000)(a)		1,200,000	$	10,428,000
Airlines — 0.3%
Lilium N.V., (Acquired 09/13/21, Cost: $8,500,000)(a)		850,000		8,253,050
Automobiles — 3.1%
Arrival Ltd., (Acquired 09/27/21, Cost: $20,182,398)(a).		2,783,376		36,601,394
Tesla, Inc.(b)(c)		84,712		65,692,462
				102,293,856
Banks — 3.7%
Klarna Holdings AB, (Acquired 08/07/19, Cost: $23,354,997)(a)(d)		86,839		119,556,087
Diversified Consumer Services — 1.3%
Chegg, Inc.(c)		356,167		24,226,479
Think & Learn Private Ltd., (Acquired 09/30/20, Cost: $7,113,729)(a)(d)		4,651		17,862,246
				42,088,725
Electrical Equipment — 0.3%
Shoals Technologies Group, Inc., Class A(c)		396,963		11,067,328
Electronic Equipment, Instruments & Components — 1.3%
Samsung SDI Co. Ltd.(c)		71,175		42,471,536
Entertainment(c) — 2.4%
HYBE Co. Ltd.		121,331		30,276,840
Roku, Inc.(b)		102,250		32,040,038
Take-Two Interactive Software, Inc.		116,092		17,886,294
				80,203,172
Health Care Providers & Services — 0.4%
Agilon Health, Inc.(c)		485,190		12,716,830
Interactive Media & Services(c) — 6.2%
Eventbrite, Inc., Class A		748,770		14,159,241
Kakao Corp.		762,481		74,988,570
Kanzhun Ltd., ADR		277,944		10,003,205
Snap, Inc., Class A(b)		991,722		73,258,504
ZoomInfo Technologies, Inc., Class A		513,553		31,424,308
				203,833,828
Internet & Direct Marketing Retail(c) — 4.3%
Delivery Hero SE(e)		238,229		30,387,338
Farfetch Ltd., Class A		980,722		36,757,461
MercadoLibre, Inc.(b)		26,158		43,929,745
Ozon Holdings PLC, ADR		584,607		29,493,423
				140,567,967
IT Services — 17.4%
Adyen NV(c)(e)		14,925		41,720,774
Automattic, Inc., Series E, (Acquired 02/03/21, Cost: $34,000,000)(a)(d)		400,000		37,812,000
Cloudflare, Inc., Class A(b)(c)		252,090		28,397,938
Dlocal Ltd.(c)		433,216		23,636,265
Endava PLC, ADR(c)		336,360		45,694,506
GMO Payment Gateway, Inc.		225,400		28,459,328
Grid Dynamics Holdings, Inc.(c)		1,174,694		34,324,559
Locaweb Servicos de Internet SA(c)(e)		11,831,349		49,708,720
MongoDB, Inc.(c)		80,445		37,930,622
Okta, Inc.(c)		144,191		34,222,292
Pagseguro Digital Ltd., Class A(c)		430,457		22,263,236
Shift4 Payments, Inc., Class A(c)		292,958		22,710,104

Security	Shares		Value
IT Services (continued)
Square, Inc., Class A(b)(c)		285,008	$	68,356,319
TRAX Ltd., Series D, (Acquired 02/18/21, Cost: $9,999,998)(a)(d)		191,806		10,666,332
TRAX Ltd., Series E, (Acquired 09/12/19, Cost: $10,999,987)(a)(d)		293,333		16,312,248
Twilio, Inc., Class A(c)		165,051		52,659,521
Wix.com Ltd.(c)		85,274		16,711,146
				571,585,910
Machinery — 0.1%
Berkshire Grey, Inc.		570,749		4,012,366
Multi-line Retail — 0.6%
Magazine Luiza SA		7,096,809		18,687,645
Professional Services(c) — 1.0%
CoStar Group, Inc.(b)		184,293		15,860,256
Legalzoom.com, Inc.		647,086		17,083,070
				32,943,326
Road & Rail(c) — 1.1%
Lyft, Inc., Class A(b)		474,493		25,428,080
TuSimple Holdings, Inc., Class A		262,243		9,737,083
				35,165,163
Semiconductors & Semiconductor Equipment — 14.0%
Alphawave IP Group PLC(c)		3,434,157		10,735,066
ASM International NV		56,775		22,234,134
BE Semiconductor Industries NV		285,445		22,708,728
Lasertec Corp.		316,800		72,121,907
Lattice Semiconductor Corp.(c)		507,451		32,806,707
MACOM Technology Solutions Holdings, Inc., Class H(c)		320,382		20,783,180
Marvell Technology, Inc.(b)		1,299,467		78,370,855
Monolithic Power Systems, Inc.(b)		91,900		44,542,092
Qorvo, Inc.(c)		162,668		27,196,463
Silergy Corp.		418,000		60,799,556
Soitec SA(c)		180,977		39,121,401
Wolfspeed, Inc.		330,702		26,697,572
				458,117,661
Software — 20.0%
Altium Ltd.		922,809		23,282,134
AppLovin Corp., Class A(c)		276,836		20,034,621
Atlassian Corp. PLC, Class A(c)		98,985		38,744,709
Avalara, Inc.(c)		176,638		30,871,023
C3.AI, Inc., Class A(b)(c)		702,280		32,543,655
Confluent, Inc., Class A(c)		204,756		12,213,695
Coupa Software, Inc.(c)		81,308		17,821,087
Crowdstrike Holdings, Inc., Class A(c)		147,993		36,373,720
Databricks, Inc., (Acquired 07/24/20, Cost: $5,501,686)(a)(d)		114,553		25,253,209
DataRobot, Inc., Series F, (Acquired 03/01/21, Cost: $1,384,813)(a)(d)		92,093		2,741,609
Elastic NV(c)		170,979		25,474,161
Freee KK(c)		367,000		26,705,042
Lightspeed Commerce, Inc.(c)		651,145		62,831,945
Linklogis, Inc., (Acquired 03/31/21, Cost: $8,528,989)(a)		3,734,000		3,837,271
Ming Yuan Cloud Group Holdings Ltd.		4,909,000		17,018,878
Procore Technologies, Inc.(c)		69,234		6,185,366
Rakus Co. Ltd.		1,236,700		43,816,859

CONSOLIDATED SCHEDULEOF INVESTMENTS

1

Consolidated Schedule of Investments   (unaudited)  (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ) (Percentages shown are based on Net Assets)

Security	Shares		Value
Software (continued)
SiteMinder Ltd., Class A, (Acquired 01/21/20, Cost: $20,875,811)(a)(d)		181,785	$	22,049,886
Snorkel AI, Inc., (Acquired 10/13/20, Cost: $2,017,593)(a)(d)		500,250		7,813,905
Snyk Ltd. , (Acquired 11/02/20, Cost: $9,287,400)(a)(d).		1,267,643		18,178,001
Synopsys, Inc.(c)		110,015		32,939,591
Trade Desk, Inc., Class A(c)		280,580		19,724,774
TUYA, Inc., ADR(c)		24,581		222,950
Unity Software, Inc.(c)		245,168		30,952,460
Xero Ltd.(c)		262,237		25,732,923
Zendesk, Inc.(c)		201,382		23,438,851
Zscaler, Inc.(b)(c)		185,686		48,690,583
				655,492,908
Specialty Retail — 1.2%
Cazoo Group Ltd., (Acquired 10/08/20, Cost: $20,649,536)(a)		5,192,246		38,707,586
Total Common Stocks — 79.0% (Cost: $1,167,079,478)				2,588,192,944
Preferred Securities
Preferred Stocks — 20.0%(a)(d)
Communications Equipment — 0.6%
Astranis Space Technologies Corp., Series C, (Acquired 03/19/21, Cost: $17,000,010)		775,515		18,806,239
Diversified Consumer Services — 0.6%
Think & Learn Private Ltd., Series F, (Acquired 09/30/20, Cost: $14,251,080)		4,920		18,895,345
Diversified Financial Services — 2.2%
Databricks, Inc., Series F, (Acquired 10/22/19, Cost: $13,200,019)		307,346		67,754,426
Snorkel Al, Inc., Series B, (Acquired 10/13/20, Cost: $999,996)		247,943		3,872,869
				71,627,295
Electrical Equipment — 0.8%
Credo Technology Group Holding Ltd.
Series D, (Acquired 03/20/20, Cost: $19,999,997)		4,005,527		25,995,870
Series D+, (Acquired 01/22/20, Cost: $1,617,982)		278,714		1,808,854
				27,804,724
Food & Staples Retailing — 0.5%
GrubMarket, Inc. , Series D, (Acquired 07/23/20, Cost: $8,000,001)		1,762,969		17,382,874
Food Products — 0.7%
Farmer’s Business Network, Inc., Series F, (Acquired 07/31/20, Cost: $11,961,002)		361,834		22,491,601
Interactive Media & Services — 1.8%
ByteDance Ltd., Series E, (Acquired 11/11/20, Cost: $35,000,075)		319,419		53,584,697
ResearchGate GmbH, Series D, (Acquired 09/24/20, Cost: $6,999,988)		424,688		7,049,821
				60,634,518

Security	Shares		Value
IT Services — 1.5%
Deep Instinct Ltd., Series D-2, (Acquired 03/19/21, Cost: $12,000,008)		1,974,374	$	13,623,181
Trumid Holdings LLC(f)
Class J-A, (Acquired 07/24/20, Cost: $9,999,857)		20,154		17,647,447
Class J-B, (Acquired 07/24/20, Cost: $5,999,914)		20,154		17,647,447
				48,918,075
Road & Rail — 0.6%
FlixMobility GmbH, Series F, (Acquired 07/26/19, Cost: $16,947,253)		850		19,848,923
Semiconductors & Semiconductor Equipment — 5.2%
Cnex Labs, Inc.
Series E, (Acquired 02/06/20, Cost: $7,000,000)		329,675		4,325,336
Series F, (Acquired 02/24/21, Cost: $4,999,999)		730,332		4,031,433
Innovium, Inc.
Series E, (Acquired 08/21/19, Cost: $8,999,992)		1,060,432		8,992,463
Series F, (Acquired 06/10/20, Cost: $6,999,998)		690,812		6,963,385
Mythic AI, Inc., Series C, (Acquired 01/26/21, Cost: $7,000,000)		1,018,908		7,886,348
Psiquantum Corp., Series C, (Acquired 09/09/19, Cost: $9,101,310)		1,962,335		40,129,751
PsiQuantum Corp., Series D, (Acquired 05/21/21, Cost: $19,999,969)		762,595		19,979,989
SambaNova Systems, Inc. (Acquired 04/09/21, Cost: $6,999,979)		73,670		7,982,881
Series C, (Acquired 02/20/20, Cost: $33,904,161)		636,800		69,003,648
				169,295,234
Software — 5.5%
Avidxchange, Inc., (Acquired 07/29/20, Cost: $7,474,330)		152,500		12,459,250
Databricks, Inc., Series G, (Acquired 02/01/21, Cost: $18,500,004)		104,303		22,993,596
DataRobot, Inc., Series F, (Acquired 10/27/20, Cost: $11,499,999)		875,059		26,050,507
GitLab, Inc., Series E, (Acquired 09/10/19, Cost: $11,670,984)		626,482		36,022,715
Rapyd Financial Network Ltd., Series E, (Acquired 03/31/21, Cost: $13,999,978)		190,705		17,213,033
Snyk Ltd. , (Acquired 11/02/20, Cost: $13,212,590)		2,663,936		38,200,842
Unqork, Inc.
Series B, (Acquired 09/19/19, Cost: $6,801,016)		597,680		17,643,514
Series C, (Acquired 09/18/20, Cost: $7,994,787)		292,000		8,619,840
				179,203,297
Total Preferred Stocks — 20.0%				654,908,125
Total Preferred Securities — 20.0%
(Cost: $370,136,278)				654,908,125

2

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ) (Percentages shown are based on Net Assets)

Security	Shares		Value
Warrants
IT Services — 0.0%
TRAX Ltd., (Acquired 09/12/19, Cost: $0)(a)(d)		46,928	$	480,073
Total Warrants — 0.0%
(Cost: $ — )				480,073
Total Long-Term Investments — 99.0% (Cost: $1,537,215,756)				3,243,581,142
Short-Term Securities
Money Market Funds — 1.6%
BlackRock Liquidity Funds, T-Fund, Institutional Class, 0.01%(g)(h)		50,871,756		50,871,756
Total Short-Term Securities — 1.6%
(Cost: $50,871,756)				50,871,756
Total Investments Before Options Written — 100.6%
(Cost: $1,588,087,512)				3,294,452,898
Options Written — (0.6)%
(Premiums Received: $(29,285,430))				(18,635,833	)
Total Investments, Net of Options Written — 100.0% (Cost: $1,558,802,082)				3,275,817,065
Other Assets Less Liabilities — 0.0%				422,364
Net Assets — 100.0%			$	3,276,239,429

^(a) Restricted security as to resale, excluding 144A securities. The Trust held restricted securities with a current value of $1,031,461,022, representing 31.5% of its net assets as of period end, and an original cost of $564,533,215.

^(b) All or a portion of the security has been pledged and/or segregated as collateral in connection with outstanding exchange-traded options written.

^(c) Non-income producing security.

^(d) Security is valued using significant unobservable inputs and is classified as Level 3 in the fair value hierarchy.

^(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)  All or a portion of the security is held by a wholly-owned subsidiary.

^(g)  Affiliate of the Trust.

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

For Trust compliance purposes, the Trust’s industry classifications refer to one or more of the industry 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 industry sub-classifications for reporting ease.

Affiliates

Investments in issuers considered to be affiliate(s) of the Trust during the period ended September 30, 2021 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Value at 12/31/20		Purchases at Cost			Proceeds from Sales			Net Realized Gain (Loss)		Change in Unrealized Appreciation (Depreciation)		Value at 09/30/21		Shares Held at 09/30/21		Income			Capital Gain Distributions from Underlying Funds
BlackRock Liquidity Funds, T-Fund, Institutional Class	$	21,688,765	$	29,182,991	(a)	$	—		$	—	$	—	$	50,871,756		50,871,756	$	5,482		$	—
SL Liquidity Series, LLC, Money Market Series(b)		—		—			(643	)(a)		643		—		—		—		196,297	(c)		—
									$	643	$	—	$	50,871,756			$	201,779		$	—

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

^(b) As of period end, the entity is no longer held.

^(c) All or a portion represents securities lending income earned from the reinvestment of cash collateral from loaned securities, net of fees and collateral investment expenses, and other payments to and from borrowers of securities.

Derivative Financial Instruments Outstanding as of Period End

Exchange-Traded Options Written

Description	Number of Contracts		Expiration Date		Exercise Price		Notional Amount (000)		Value
Call
Cree, Inc.		201		10/01/21	USD	84.00	USD	1,623	$	(3,015	)
Marvell Technology Inc.		884		10/01/21	USD	60.25	USD	5,331		(48,886	)
MercadoLibre, Inc.		18		10/01/21	USD	1,830.00	USD	3,023		(6,300	)

CONSOLIDATED SCHEDULEOF INVESTMENTS 3

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ)

Exchange-Traded Options Written (continued)

Description	Number of Contracts		Expiration Date		Exercise Price		Notional Amount (000)		Value
Call (continued)
Okta, Inc.		170		10/01/21	USD	240.00	USD	4,035	$	(20,230	)
Synopsys, Inc.		190		10/01/21	USD	330.00	USD	5,689		(4,750	)
Atlassian Corp. PLC, Class A		34		10/08/21	USD	390.00	USD	1,331		(34,510	)
Coupa Software, Inc.		90		10/08/21	USD	250.00	USD	1,973		(2,925	)
Cree, Inc.		413		10/08/21	USD	92.00	USD	3,334		(21,683	)
Crowdstrike Holdings, Inc., Class A		99		10/08/21	USD	285.00	USD	2,433		(1,337	)
Lyft, Inc., Class A		217		10/08/21	USD	52.00	USD	1,163		(51,212	)
MercadoLibre, Inc.		16		10/08/21	USD	2,100.00	USD	2,687		(1,280	)
MongoDB, Inc.		32		10/08/21	USD	415.00	USD	1,509		(189,600	)
Roku, Inc.		79		10/08/21	USD	385.00	USD	2,475		(1,027	)
Snap, Inc., Class A		1,063		10/08/21	USD	81.22	USD	7,852		(47,850	)
Square, Inc., Class A		213		10/08/21	USD	270.00	USD	5,109		(4,473	)
Tesla, Inc.		60		10/08/21	USD	755.00	USD	4,653		(244,350	)
Trade Desk, Inc., Class A		510		10/08/21	USD	85.00	USD	3,585		(2,550	)
Twilio, Inc., Class A		205		10/08/21	USD	380.00	USD	6,541		(8,713	)
Agilon Health, Inc.		350		10/15/21	USD	40.00	USD	917		(17,500	)
Agilon Health, Inc.		329		10/15/21	USD	35.00	USD	862		(3,290	)
Atlassian Corp. PLC, Class A		34		10/15/21	USD	360.00	USD	1,331		(119,000	)
Avalara, Inc.		123		10/15/21	USD	180.00	USD	2,150		(43,665	)
C3.AI, Inc., Class A		595		10/15/21	USD	55.00	USD	2,757		(19,338	)
Chegg, Inc.		468		10/15/21	USD	85.00	USD	3,183		(2,340	)
Chegg, Inc.		445		10/15/21	USD	90.00	USD	3,027		(2,225	)
Cloudflare, Inc., Class A		450		10/15/21	USD	130.00	USD	5,069		(23,850	)
Confluent, Inc., Class A		204		10/15/21	USD	55.00	USD	1,217		(126,480	)
Confluent, Inc., Class A		205		10/15/21	USD	60.00	USD	1,223		(68,675	)
CoStar Group, Inc.		291		10/15/21	USD	82.00	USD	2,504		(133,860	)
Cree, Inc.		218		10/15/21	USD	95.00	USD	1,760		(3,270	)
Crowdstrike Holdings, Inc., Class A		70		10/15/21	USD	280.00	USD	1,720		(2,835	)
Dlocal Ltd., Class A		500		10/15/21	USD	70.00	USD	2,728		(12,500	)
Dlocal Ltd., Class A		500		10/15/21	USD	75.00	USD	2,728		(7,500	)
Elastic NV		256		10/15/21	USD	170.00	USD	3,814		(10,880	)
Endava PLC		165		10/15/21	USD	145.00	USD	2,242		(21,038	)
Endava PLC		220		10/15/21	USD	140.00	USD	2,989		(63,250	)
Endava PLC		100		10/15/21	USD	135.00	USD	1,359		(54,000	)
Eventbrite, Inc., Class A		1,079		10/15/21	USD	17.50	USD	2,040		(194,220	)
Farfetch Ltd., Class A		820		10/15/21	USD	60.00	USD	3,073		(3,280	)
Farfetch Ltd., Class A		796		10/15/21	USD	45.00	USD	2,983		(8,756	)
Grid Dynamics Holdings, Inc.		1,176		10/15/21	USD	26.47	USD	3,436		(478,331	)
Lattice Semiconductor Corp.		744		10/15/21	USD	60.00	USD	4,810		(405,480	)
Legalzoom.com, Inc.		652		10/15/21	USD	35.00	USD	1,721		(3,260	)
Lightspeed Commerce Inc.		488		10/15/21	CAD	115.00	CAD	5,964		(410,327	)
Lightspeed Commerce Inc.		978		10/15/21	CAD	120.00	CAD	11,953		(582,970	)
Lyft, Inc., Class A		225		10/15/21	USD	52.50	USD	1,206		(56,362	)
MACOM Technology Solutions Holdings, Inc.		497		10/15/21	USD	59.28	USD	3,224		(327,857	)
Marvell Technology Inc.		85		10/15/21	USD	62.50	USD	513		(6,928	)
MongoDB, Inc.		40		10/15/21	USD	490.00	USD	1,886		(39,200	)
Okta, Inc.		80		10/15/21	USD	280.00	USD	1,899		(1,280	)
Ozon Holdings PLC		769		10/15/21	USD	55.00	USD	3,880		(15,380	)
Pagseguro Digital Ltd., Class A		444		10/15/21	USD	60.79	USD	2,296		(3,979	)
Qorvo, Inc.		215		10/15/21	USD	185.00	USD	3,595		(5,913	)
Shift4 Payments, Inc., Class A		158		10/15/21	USD	90.00	USD	1,225		(3,555	)
Shift4 Payments, Inc., Class A		160		10/15/21	USD	95.00	USD	1,240		(2,000	)
Shoals Technologies Group, Inc., Class A		100		10/15/21	USD	35.00	USD	279		(1,250	)
Snap, Inc., Class A		1,460		10/15/21	USD	80.00	USD	10,785		(139,430	)
Square, Inc., Class A		112		10/15/21	USD	270.00	USD	2,686		(8,064	)
Tesla, Inc.		79		10/15/21	USD	755.00	USD	6,126		(362,610	)
Tesla, Inc.		59		10/15/21	USD	760.00	USD	4,575		(249,127	)
Twilio, Inc., Class A		205		10/15/21	USD	390.00	USD	6,541		(6,355	)
Unity Software, Inc.		410		10/15/21	USD	135.00	USD	5,176		(76,875	)
Wix.Com Ltd.		252		10/15/21	USD	250.00	USD	4,938		(4,410	)
Zendesk, Inc.		304		10/15/21	USD	125.00	USD	3,538		(28,120	)
ZoomInfo Technologies, Inc., Class A		770		10/15/21	USD	65.00	USD	4,712		(80,850	)

4

Consolidated Schedule of Investments  (unaudited) (continued)	BlackRock Science and Technology Trust II (BSTZ)
September 30, 2021

Exchange-Traded Options Written (continued)

Description	Number of Contracts		Expiration Date		Exercise Price		Notional Amount (000)		Value
Call (continued)
Zscaler, Inc.		139		10/15/21	USD	280.00	USD	3,645	$	(30,580	)
Legalzoom.com, Inc.		652		10/20/21	USD	35.45	USD	1,721		(781	)
Coupa Software, Inc.		78		10/22/21	USD	270.00	USD	1,710		(3,315	)
Lattice Semiconductor Corp.		287		10/22/21	USD	67.09	USD	1,855		(55,251	)
Lyft, Inc., Class A		155		10/22/21	USD	54.00	USD	831		(33,170	)
MongoDB, Inc.		40		10/22/21	USD	490.00	USD	1,886		(57,400	)
Okta, Inc.		57		10/22/21	USD	265.00	USD	1,353		(6,897	)
Roku, Inc.		170		10/22/21	USD	365.00	USD	5,327		(32,895	)
Snap, Inc., Class A		1,324		10/22/21	USD	77.00	USD	9,780		(519,670	)
Square, Inc., Class A		158		10/22/21	USD	280.00	USD	3,789		(10,191	)
Tesla, Inc.		34		10/22/21	USD	740.00	USD	2,637		(211,565	)
Zscaler, Inc.		51		10/22/21	USD	285.00	USD	1,337		(12,087	)
Grid Dynamics Holdings, Inc.		950		10/25/21	USD	32.00	USD	2,776		(77,913	)
Shift4 Payments, Inc., Class A		400		10/25/21	USD	94.00	USD	3,101		(21,528	)
Farfetch Ltd., Class A		420		10/27/21	USD	50.00	USD	1,574		(9,256	)
Cloudflare, Inc., Class A		322		10/29/21	USD	127.00	USD	3,627		(73,416	)
Grid Dynamics Holdings, Inc.		581		10/29/21	USD	31.61	USD	1,698		(58,464	)
Lyft, Inc., Class A		515		10/29/21	USD	54.00	USD	2,760		(123,600	)
Marvell Technology Inc.		785		10/29/21	USD	62.00	USD	4,734		(121,675	)
Roku, Inc.		170		10/29/21	USD	370.00	USD	5,327		(44,200	)
Zscaler, Inc.		164		10/29/21	USD	275.00	USD	4,300		(99,630	)
Grid Dynamics Holdings, Inc.		581		11/03/21	USD	31.61	USD	1,698		(66,647	)
Coupa Software, Inc.		59		11/05/21	USD	255.00	USD	1,293		(14,013	)
Crowdstrike Holdings, Inc., Class A		84		11/05/21	USD	270.00	USD	2,065		(32,970	)
Marvell Technology Inc.		1,246		11/05/21	USD	65.00	USD	7,515		(73,514	)
MercadoLibre, Inc.		20		11/05/21	USD	1,900.00	USD	3,359		(58,900	)
MongoDB, Inc.		25		11/05/21	USD	470.00	USD	1,179		(75,869	)
Ozon Holdings PLC		867		11/05/21	USD	54.25	USD	4,374		(77,988	)
Snap, Inc., Class A		401		11/05/21	USD	81.00	USD	2,962		(130,325	)
Square, Inc., Class A		315		11/05/21	USD	265.00	USD	7,555		(160,650	)
Take-Two Interactive Software, Inc.		162		11/05/21	USD	165.00	USD	2,496		(45,765	)
Twilio, Inc., Class A		52		11/05/21	USD	345.00	USD	1,659		(44,460	)
Zscaler, Inc.		165		11/05/21	USD	280.00	USD	4,327		(95,287	)
Monolithic Power Systems, Inc.		112		11/08/21	USD	499.00	USD	5,428		(194,271	)
Atlassian PLC, Class A		144		11/10/21	USD	390.00	USD	5,636		(333,677	)
Cloudflare, Inc., Class A		424		11/12/21	USD	122.00	USD	4,776		(193,590	)
Zendesk, Inc.		260		11/12/21	USD	121.00	USD	3,026		(117,268	)
Confluent, Inc., Class A		165		11/15/21	USD	65.50	USD	984		(66,825	)
Agilon Health, Inc.		679		11/19/21	USD	30.00	USD	1,780		(39,042	)
Applovin Corp., Class A		380		11/19/21	USD	85.00	USD	2,750		(94,050	)
Applovin Corp., Class A		395		11/19/21	USD	90.00	USD	2,859		(64,187	)
Atlassian Corp. PLC, Class A		65		11/19/21	USD	400.00	USD	2,544		(157,062	)
Avalara, Inc.		171		11/19/21	USD	190.00	USD	2,989		(97,470	)
Chegg, Inc.		300		11/19/21	USD	85.00	USD	2,041		(18,000	)
Cloudflare, Inc., Class A		190		11/19/21	USD	135.00	USD	2,140		(46,265	)
CoStar Group, Inc.		225		11/19/21	USD	93.00	USD	1,936		(32,062	)
Cree, Inc.		93		11/19/21	USD	92.50	USD	751		(18,368	)
Crowdstrike Holdings, Inc., Class A		62		11/19/21	USD	280.00	USD	1,524		(22,165	)
Crowdstrike Holdings, Inc., Class A		99		11/19/21	USD	270.00	USD	2,433		(56,182	)
Dlocal Ltd., Class A		1,380		11/19/21	USD	70.00	USD	7,529		(317,400	)
Elastic NV		224		11/19/21	USD	180.00	USD	3,337		(26,880	)
Eventbrite, Inc., Class A		1,020		11/19/21	USD	20.00	USD	1,929		(140,250	)
Lightspeed Commerce Inc.		360		11/19/21	CAD	160.00	CAD	4,400		(70,204	)
Lyft, Inc., Class A		216		11/19/21	USD	57.50	USD	1,158		(48,708	)
MACOM Technology Solutions Holdings, Inc.		400		11/19/21	USD	65.00	USD	2,595		(194,000	)
Marvell Technology Inc.		638		11/19/21	USD	65.00	USD	3,848		(75,603	)
MercadoLibre, Inc.		20		11/19/21	USD	1,880.00	USD	3,359		(89,800	)
MongoDB, Inc.		88		11/19/21	USD	500.00	USD	4,149		(169,400	)
Monolithic Power Systems, Inc.		145		11/19/21	USD	510.00	USD	7,028		(249,400	)
Okta, Inc.		96		11/19/21	USD	270.00	USD	2,278		(28,560	)
Pagseguro Digital Ltd., Class A		760		11/19/21	USD	57.50	USD	3,931		(127,300	)
Procore Technologies, Inc.		193		11/19/21	USD	91.00	USD	1,724		(97,766	)

CONSOLIDATED SCHEDULEOF INVESTMENTS 5

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ)

Exchange-Traded Options Written (continued)

Description	Number of Contracts		Expiration Date		Exercise Price		Notional Amount (000)		Value
Call (continued)
Qorvo, Inc.		240		11/19/21	USD	185.00	USD	4,013	$	(68,400	)
Roku, Inc.		143		11/19/21	USD	365.00	USD	4,481		(115,115	)
Shift4 Payments, Inc., Class A		102		11/19/21	USD	90.00	USD	791		(20,400	)
Shoals Technologies Group, Inc., Class A		430		11/19/21	USD	40.00	USD	1,199		(12,900	)
Snap, Inc., Class A		1,020		11/19/21	USD	85.00	USD	7,535		(283,050	)
Synopsys, Inc.		120		11/19/21	USD	340.00	USD	3,593		(15,600	)
Take-Two Interactive Software, Inc.		163		11/19/21	USD	170.00	USD	2,511		(36,267	)
Trade Desk, Inc., Class A		275		11/19/21	USD	80.00	USD	1,933		(68,750	)
TuSimple Holdings, Inc.		508		11/19/21	USD	55.00	USD	1,886		(49,530	)
Unity Software, Inc.		268		11/19/21	USD	135.00	USD	3,384		(182,240	)
Unity Software, Inc.		9		11/19/21	USD	140.00	USD	114		(4,725	)
ZoomInfo Technologies, Inc., Class A		656		11/19/21	USD	66.35	USD	4,014		(162,551	)
Shoals Technologies Group, Inc., Class A		198		12/17/21	USD	35.00	USD	552		(23,265	)
									$	(11,644,776	)

OTC Options Written

Description	Counterparty	Number of Contracts		Expiration Date		Exercise Price		Notional Amount (000)			Value
Call
Lattice Semiconductor Corp.	Morgan Stanley & Co. International PLC		38,900		10/01/21	USD	59.52		USD	2,515	$	(199,492	)
BE Semiconductor Industries NV	Goldman Sachs International		46,300		10/05/21	EUR	74.37		EUR	3,179		(5,441	)
Delivery Hero AG	Morgan Stanley & Co. International PLC		58,100		10/05/21	EUR	117.85		EUR	6,417		(18,000	)
GMO Payment Gateway Inc.	Goldman Sachs International		31,400		10/05/21	JPY	13,384.63		JPY	445,252		(194,685	)
Hybe Ltd.	Goldman Sachs International		36,300		10/05/21	KRW	300,298.04		KRW	10,835,550		(138,510	)
Silergy Corp.	JPMorgan Chase Bank N.A.		87,000		10/05/21	USD	3,640.92		USD	357,135		(1,454,316	)
Xero Ltd.	UBS AG		3,200		10/05/21	AUD	146.37		AUD	445		(110	)
Shoals Technologies Group, Inc., Class A	Citibank N.A.		39,700		10/06/21	USD	29.96		USD	1,107		(8,954	)
Adyen NV	Goldman Sachs International		4,500		10/07/21	EUR	2,433.72		EUR	10,868		(172,458	)
Soitec SA	UBS AG		14,900		10/07/21	EUR	198.08		EUR	2,800		(10,113	)
Altium Ltd.	Morgan Stanley & Co. International PLC		150,000		10/08/21	AUD	35.99		AUD	5,328		(40,697	)
Avalara, Inc.	Citibank N.A.		15,900		10/08/21	USD	175.00		USD	2,779		(66,347	)
Rakus Ltd.	JPMorgan Chase Bank N.A.		112,300		10/08/21	JPY	3,540.40		JPY	444,147		(415,522	)
Delivery Hero AG	Goldman Sachs International		13,400		10/13/21	EUR	132.03		EUR	1,480		(1,283	)
FREEE KK	JPMorgan Chase Bank N.A.		40,000		10/13/21	JPY	9,732.42		JPY	326,000		(3,700	)
Lasertec Corp.	JPMorgan Chase Bank N.A.		25,000		10/13/21	JPY	22,321.66		JPY	639,750		(698,898	)
Samsung SDI Co. Ltd.	JPMorgan Chase Bank N.A.		10,300		10/13/21	KRW	834,080.00		KRW	7,395,400		(191	)
TuSimple Holdings, Inc.	Citibank N.A.		46,700		10/13/21	USD	35.25		USD	1,734		(173,882	)
Ming Yuan Cloud Group Holdings Ltd.	Société Générale		736,000		10/15/21	HKD	30.69		HKD	19,872		(76,736	)
Kakao Corp.	Morgan Stanley & Co. International PLC		26,500		10/19/21	KRW	151,994.56		KRW	3,127,000		(389	)
Ming Yuan Cloud Group Holdings Ltd.	JPMorgan Chase Bank N.A.		736,000		10/19/21	HKD	34.34		HKD	19,872		(38,796	)
Soitec SA	UBS AG		12,800		10/19/21	EUR	206.82		EUR	2,405		(4,606	)
FREEE KK	JPMorgan Chase Bank N.A.		40,000		10/20/21	JPY	8,645.60		JPY	326,000		(66,487	)
Rakus Ltd.	Goldman Sachs International		112,300		10/21/21	JPY	3,573.80		JPY	444,147		(442,330	)
Altium Ltd.	Goldman Sachs International		108,300		10/26/21	AUD	32.91		AUD	3,847		(208,476	)
Samsung Sdi Ltd.	UBS AG		9,700		10/26/21	KRW	800,800.00		KRW	6,964,600		(16,604	)
Endava PLC	Credit Suisse International		22,500		10/27/21	USD	141.09		USD	3,057		(69,075	)
Soitec SA	Morgan Stanley & Co. International PLC		6,100		10/27/21	EUR	211.12		EUR	1,146		(6,579	)
Legalzoom.com, Inc.	Barclays Bank PLC		50,700		10/28/21	USD	38.65		USD	1,338		(329	)
Locaweb Servicos De Internet SA	Citibank N.A.		1,183,200		10/29/21	USD	23.60		USD	27,072		(200,896	)
Magazine Luiza SA	Credit Suisse International		2,047,000		10/29/21	USD	18.83		USD	29,354		(10,992	)
Rakus Ltd.	JPMorgan Chase Bank N.A.		121,700		10/29/21	JPY	4,735.50		JPY	481,324		(43,603	)
Soitec SA	UBS AG		6,900		10/29/21	EUR	217.74		EUR	1,297		(4,488	)
Asm International NV	Credit Suisse International		15,900		11/02/21	EUR	382.30		EUR	5,377		(77,779	)
Avalara, Inc.	Citibank N.A.		21,200		11/02/21	USD	179.05		USD	3,705		(155,086	)
BE Semiconductor Industries NV	Credit Suisse International		33,700		11/02/21	EUR	83.45		EUR	2,314		(8,133	)
GMO Payment Gateway Inc.	JPMorgan Chase Bank N.A.		31,800		11/02/21	JPY	16,068.00		JPY	450,924		(11,066	)
Xero Ltd.	Citibank N.A.		32,300		11/02/21	AUD	155.31		AUD	4,490		(8,581	)
C3.AI, Inc., Class A	Morgan Stanley & Co. International PLC		142,900		11/03/21	USD	53.54		USD	6,622		(173,351	)
Endava PLC	JPMorgan Chase Bank N.A.		23,100		11/03/21	USD	127.67		USD	3,138		(247,228	)

6

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ)

OTC Options Written (continued)

Description	Counterparty	Number of Contracts		Expiration Date		Exercise Price			Notional Amount (000)			Value
Call (continued)
Farfetch Ltd., Class A	Barclays Bank PLC		31,000		11/03/21		USD	43.91		USD	1,162	$	(16,550	)
Shoals Technologies Group, Inc., Class A	Citibank N.A.		42,900		11/03/21		USD	35.14		USD	1,196		(15,671	)
Snap, Inc., Class A	Goldman Sachs International		18,600		11/03/21		USD	76.15		USD	1,374		(84,029	)
TuSimple Holdings, Inc.	Citibank N.A.		46,700		11/03/21		USD	38.50		USD	1,734		(166,603	)
Shoals Technologies Group, Inc., Class A	Bank of America N.A.		19,900		11/05/21		USD	32.36		USD	555		(17,468	)
Chegg, Inc.	BNP Paribas SA		74,500		11/08/21		USD	84.31		USD	5,067		(28,541	)
Farfetch Ltd., Class A	BNP Paribas SA		40,000		11/08/21		USD	44.86		USD	1,499		(19,578	)
Shoals Technologies Group, Inc., Class A	Citibank N.A.		43,000		11/09/21		USD	36.47		USD	1,199		(17,028	)
FREEE KK	JPMorgan Chase Bank N.A.		60,900		11/10/21		JPY	8,761.27		JPY	496,335		(167,281	)
Kakao Corp.	Morgan Stanley & Co. International PLC		49,800		11/10/21		KRW	125,931.97		KRW	5,876,400		(153,986	)
Lasertec Corp.	Goldman Sachs International		149,200		11/10/21		JPY	28,633.20		JPY	3,818,028		(717,029	)
Silergy Corp.	Morgan Stanley & Co. International PLC		30,000		11/10/21		USD	4,766.85		USD	123,150		(75,060	)
Soitec SA	UBS AG		5,000		11/10/21		EUR	191.77		EUR	940		(38,024	)
												$	(6,991,057	)

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 Trust 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 Trust’s policy regarding valuation of financial instruments, refer to its most recent financial statements.

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

	Level 1		Level 2		Level 3		Total
Assets
Investments
Long-Term Investments
Common Stocks
Aerospace & Defense	$	—	$	10,428,000	$	—	$	10,428,000
Airlines		—		8,253,050		—		8,253,050
Automobiles		65,692,462		36,601,394		—		102,293,856
Banks		—		—		119,556,087		119,556,087
Diversified Consumer Services		24,226,479		—		17,862,246		42,088,725
Electrical Equipment		11,067,328		—		—		11,067,328
Electronic Equipment, Instruments & Components		—		42,471,536		—		42,471,536
Entertainment		49,926,332		30,276,840		—		80,203,172
Health Care Providers & Services		12,716,830		—		—		12,716,830
Interactive Media & Services		128,845,258		74,988,570		—		203,833,828
Internet & Direct Marketing Retail		110,180,629		30,387,338		—		140,567,967
IT Services		436,615,228		70,180,102		64,790,580		571,585,910

CONSOLIDATED SCHEDULEOF INVESTMENTS 7

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ)

Fair Value Hierarchy as of Period End (continued)

	Level 1			Level 2			Level 3		Total
Common Stocks (continued)
Machinery	$	—		$	4,012,366		$	—	$	4,012,366
Multi-line Retail		18,687,645			—			—		18,687,645
Professional Services		32,943,326			—			—		32,943,326
Road & Rail		35,165,163			—			—		35,165,163
Semiconductors & Semiconductor Equipment		241,131,935			216,985,726			—		458,117,661
Software		439,063,191			140,393,107			76,036,610		655,492,908
Specialty Retail		—			38,707,586			—		38,707,586
Preferred Securities
Preferred Stocks		—			—			654,908,125		654,908,125
Warrants		—			—			480,073		480,073
Short-Term Securities
Money Market Funds		50,871,756			—			—		50,871,756
Unfunded SPAC PIPE Commitments(a)		—			—			—		—
	$	1,657,133,562		$	703,685,615		$	933,633,721	$	3,294,452,898
Derivative Financial Instruments(b)
Liabilities
Equity Contracts	$	(8,404,390	)	$	(10,231,443	)	$	—	$	(18,635,833	)

^(a)  Unfunded SPAC PIPE commitments are valued at the unrealized appreciation (depreciation) on the commitment.

^(b)  Derivative financial instruments are options written. Options written are shown at value.

A reconciliation of Level 3 financial instruments is presented when the Trust had a significant amount of Level 3 investments at the beginning and/or end of the period in relation to net assets. The following table is a reconciliation of Level 3 investments for which significant unobservable inputs were used in determining fair value:

	Common Stocks			Preferred Stocks			Unfunded SPAC PIPE Commitments		Warrants			Total
Assets
Opening balance, as of December 31, 2020	$	116,083,688		$	401,750,866		$	—	$	521,839		$	518,356,393
Transfers into Level 3		—			—			—		—			—
Transfers out of Level 3		—			—			—		—			—
Accrued discounts/premiums		—			—			—		—			—
Net realized gain (loss)		—			18,754,001			—		—			18,754,001
Net change in unrealized appreciation (depreciation)(a)		114,933,953			199,683,601			—		(41,766	)		314,575,788
Purchases		52,884,809			135,500,021			—		—			188,384,830
Sales		(5,656,927	)		(100,780,364	)		—		—			(106,437,291	)
Closing balance, as of September 30, 2021	$	278,245,523		$	654,908,125		$	—	$	480,073		$	933,633,721
Net change in unrealized appreciation (depreciation) on investments still held at September 30, 2021(a)	$	115,261,790		$	248,278,027		$	—	$	(41,766	)	$	363,498,051

^(a)  Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at September 30, 2021 is generally due to investments no longer held or categorized as Level 3 at period end.

The following table summarizes the valuation approaches used and unobservable inputs utilized by the BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) to determine the value of certain of the Trust’s Level 3 financial instruments as of period end.

	Value		Valuation Approach		Unobservable Inputs		Range of Unobservable Inputs Utilized(a)		Weighted Average of Unobservable Inputs Based on Fair Value
Assets
Common Stocks(b)(c)	$	278,245,523		Market		Revenue Multiple		12.00x - 34.85x		23.39x
						Volatility		32% - 32%		32%
						Time to Exit		0.5 - 0.5		0.5
						Recent Transactions	$	14.34 - $3,840.52	$	1,087.30
Preferred Stocks(d)(e)		654,908,125		Income		Discount Rate		40%		—
				Market		Revenue Multiple		1.52x - 40.00x		21.34x
						Volatility		30% - 50%		48%
						Time to Exit		2.3 - 4.0		3.7

8

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2021 BlackRock Science and Technology Trust II (BSTZ)

	Value		Valuation Approach		Unobservable Inputs		Range of Unobservable Inputs Utilized(a)		Weighted Average of Unobservable Inputs Based on Fair Value
						Recent Transactions	$	8.48 - $ 3,840.52	$	961.42
Warrants(f)	$	480,073		Market		Revenue Multiple		12.00x		—
						Volatility		32%		—
						Time to Exit		0.5		—
	$	933,633,721

^(a)  A significant change in unobservable input would have resulted in a correlated (inverse) significant change to value.

^(b)  For the period end September 30, 2021, the valuation technique for investments classified as Common Stocks amounting to $16,312,248 changed to Current Value Method. The investments were previously valued utilizing Transaction Price approach. The change was due to consideration of the information that was available at the time the investments were valued.

^(c)  For the period end September 30, 2021, the valuation technique for investments classified as Common Stocks amounting to $22,049,886 changed to Transaction Price approach. The investments were previously valued utilizing Current Value Method. The change was due to consideration of the information that was available at the time the investments were valued.

^(d)  For the period end September 30, 2021, the valuation technique for investments classified as Preferred Stocks amounting to $107,439,928 changed to Current Value Method. The investments were previously valued utilizing Transaction Price Approach. The change was due to consideration of the information that was available at the time the investments were valued.

^(e) For the period end September 30, 2021, the valuation technique for investments classified as Preferred Stocks amounting to $51,250,742 changed to Transaction Price approach. The investments were previously valued utilizing Current Value Method. The change was due to consideration of the information that was available at the time the investments were valued.

^(f)  For the period end September 30, 2021, the valuation technique for investments classified as Warrants amounting to $480,073 changed to Current Value Method. The investments were previously valued utilizing Transaction Price Approach. The change was due to consideration of the information that was available at the time the investments were valued.

Currency Abbreviation

AUD	Australian Dollar
CAD	Canadian Dollar
EUR	Euro
HKD	Hong Kong Dollar
JPY	Japanese Yen
KRW	South Korean Won
USD	United States Dollar

Portfolio Abbreviation

ADR	American Depositary Receipt
PIPE	Private Investment in Public Equity
SPAC	Special Purpose Acquisition Company

CONSOLIDATED SCHEDULEOF INVESTMENTS 9