BlackRock Science and Technology Trust II (BSTZ) NPORT-P BlackRock Science and Technology Trust II (Sep 2020 report)

Consolidated Schedule of Investments  (unaudited) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ) (Percentages shown are based on Net Assets)

Security	Shares		Value
Common Stocks
Automobiles(a) — 4.2%
Tesla, Inc.(b)		183,864	$	78,879,495
XPeng, Inc., ADR		854,662		17,153,066
				96,032,561
Banks — 1.6%
Klarna Holdings AB, (Acquired 08/07/19, Cost: $ 23,354,997)(c)(d)		86,839		36,690,965
Capital Markets(a) — 1.0%
Dragoneer Growth Opportunities Corp.		733,300		8,982,925
XP, Inc., Class A		358,928		14,963,708
				23,946,633
Diversified Consumer Services(a) — 3.2%
Afya Ltd., Class A		462,537		12,599,508
Arco Platform Ltd., Class A		408,891		16,699,108
Chegg, Inc.		326,477		23,323,517
TAL Education Group, ADR		263,259		20,018,214
				72,640,347
Diversified Telecommunication Services — 1.0%
Bandwidth, Inc., Class A(a)		132,945		23,208,209
Electronic Equipment, Instruments & Components — 1.2%
Samsung SDI Co. Ltd.		74,837		27,646,162
Entertainment — 4.7%
Big Hit Entertainment Co. Ltd., (Acquired 09/28/20, Cost: $14,786,171)(d)		127,263		14,690,470
NCSoft Corp.		16,307		11,237,694
NetEase, Inc., ADR(b)		55,363		25,171,895
Roku, Inc.(a)(b)		108,969		20,573,347
Tencent Music Entertainment Group, ADR(a)		1,061,891		15,684,130
Zynga, Inc., Class A(a)		2,170,442		19,794,431
				107,151,967
Health Care Technology(a) — 2.5%
GoodRx Holdings, Inc., Class A		177,109		9,847,261
Livongo Health, Inc.		330,184		46,242,269
				56,089,530
Interactive Media & Services — 5.5%
Kakao Corp.		159,682		49,653,687
Snap, Inc., Class A(a)		1,186,934		30,990,847
Yandex NV, Class A(a)		312,606		20,397,541
ZoomInfo Technologies, Inc., Class A(a)		553,685		23,802,918
				124,844,993
Internet & Direct Marketing Retail(a) — 6.8%
Delivery Hero SE(e)		305,825		35,090,131
Farfetch Ltd., Class A		1,216,809		30,614,915
Meituan Dianping, Class B		1,230,000		38,746,577
MercadoLibre, Inc.(b)		28,105		30,423,100
Shop Apotheke Europe NV(e)		114,589		19,960,850
				154,835,573
IT Services — 19.8%
Adyen NV(a)(e)		16,766		30,924,601
Endava PLC, ADR(a)		352,277		22,246,292
GDS Holdings Ltd., ADR(a)		213,834		17,498,036
GMO Payment Gateway, Inc.		233,800		25,045,261
Grid Dynamics Holdings Inc.(a)		1,090,376		8,428,606
Kingsoft Cloud Holdings Ltd., ADR(a)(f)		655,104		19,345,221
Locaweb Servicos de Internet SA(a)(e)		3,720,234		39,488,443
MongoDB, Inc.(a)		72,841		16,863,420

Security	Shares		Value
IT Services (continued)
Okta, Inc.(a)		127,495	$	27,264,806
Pagseguro Digital Ltd., Class A(a)		353,932		13,346,776
Shift4 Payments, Inc., Class A(a)		167,572		8,103,782
Shopify, Inc., Class A(a)(b)		36,201		37,032,537
Square, Inc., Class A(a)		322,298		52,389,540
StoneCo Ltd., Class A(a)		413,222		21,855,312
TRAX Ltd., (Acquired 09/12/19, Cost: $10,999,987)(c)(d)		293,333		16,473,581
Trumid Holdings LLC, Class J-A(a)(c)(g)		20,154		7,999,929
Trumid Holdings LLC, Class J-B(a)(c)(g)		20,154		7,999,929
Twilio, Inc., Class A(a)		184,419		45,568,091
Tyro Payments Ltd.(a)		3,703,460		9,634,536
Wix.com Ltd.(a)		90,733		23,123,305
				450,632,004
Multiline Retail — 1.3%
Magazine Luiza SA		1,877,085		29,814,630
Professional Services — 0.6%
CoStar Group, Inc.(a)(b)		17,529		14,873,532
Semiconductors & Semiconductor Equipment — 12.7%
ACM Research, Inc., Class A(a)		278,696		19,257,894
ASMedia Technology Inc.		257,000		13,030,502
BE Semiconductor Industries NV.		218,779		9,379,458
Cree, Inc.(a)		335,156		21,362,844
Inphi Corp.(a)		252,837		28,380,953
Lasertec Corp.		336,100		27,627,052
Lattice Semiconductor Corp.(a)		515,803		14,937,655
Marvell Technology Group Ltd.		758,619		30,117,174
Monolithic Power Systems, Inc.(b)		90,194		25,219,144
Power Integrations, Inc.		113,482		6,286,903
Qorvo, Inc.(a)		170,179		21,954,793
Silergy Corp.		400,000		23,714,747
SOITEC(a)		168,756		24,300,122
STMicroelectronics NV		783,328		24,024,666
				289,593,907
Software — 23.5%
Agora, Inc., ADR(a)(f).		240,744		10,347,177
Altium Ltd.		792,994		20,618,859
Atlassian Corp. PLC, Class A(a)		101,575		18,465,319
Avalara, Inc.(a)		162,203		20,654,930
Cloudflare, Inc., Class A(a)		280,165		11,503,575
Coupa Software, Inc.(a)		77,161		21,160,633
Crowdstrike Holdings, Inc., Class A(a)		172,745		23,721,344
Databricks, Inc., (Acquired 07/24/20, Cost: $5,501,686)(c)(d)		114,553		5,498,544
Elastic NV(a)		176,354		19,026,833
Five9, Inc.(a)		201,887		26,180,706
Freee KK(a)		397,500		30,145,372
Kingdee International Software Group Co. Ltd.(a).		10,912,000		28,461,804
Lightspeed POS Inc.(a)		660,139		21,149,435
Ming Yuan Cloud Group Holdings Ltd.(a)		4,979,000		17,718,701
Online Ventures Pty Ltd., (Acquired 01/21/20, Cost: $20,875,811)(c)(d)		181,785		19,918,526
Rakus Co. Ltd.		1,330,000		23,860,803
RingCentral, Inc., Class A(a).		109,318		30,019,816
SVMK, Inc.(a).		669,061		14,792,939
Synopsys, Inc.(a)		102,130		21,853,777
Think & Learn Private Ltd., (Acquired 09/30/20, Cost: $7,113,729)(c)(d)		4,651		7,068,373
Trade Desk, Inc., Class A(a)(b)		39,376		20,427,481
Unity Software, Inc.(a).		260,805		22,763,060

CONSOLIDATED SCHEDULE OF INVESTMENTS 1

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ) (Percentages shown are based on Net Assets)

Security	Shares		Value
Software (continued)
Weimob, Inc.(a)(e)		17,808,000	$	24,096,401
Xero Ltd.(a)		246,720		17,997,003
Zendesk, Inc.(a)		196,563		20,230,264
Zscaler, Inc.(a)		263,178		37,026,513
				534,708,188
Specialty Retail — 0.6%
Vroom Inc.(a)		243,866		12,627,381
Total Common Stocks — 90.2% (Cost: $1,173,907,913)				2,055,336,582
Preferred Securities
Preferred Stocks — 10.3%(c)(d)
Electronic Equipment, Instruments & Components — 0.9%
Credo Technology Group Holding Ltd., Series D, (Acquired 03/20/20, Cost: $19,999,997)		4,005,527		19,987,580
Food & Staples Retailing — 0.3%
GrubMarket, Inc., Series D, (Acquired 07/23/20, Cost: $8,000,001)		1,762,969		8,003,879
Food Products — 0.5%
Farmer’s Business Network, Inc, Series F, (Acquired 07/31/20, Cost: $11,961,002)		361,834		11,962,232
Interactive Media & Services — 0.3%
ResearchGate GmbH, Series D, (Acquired 09/24/20, Cost: $6,999,988)		424,688		6,999,988
Road & Rail — 0.4%
FlixMobility GmbH, Series F, (Acquired 07/26/19, Cost: $16,947,253)		850		8,735,612
Semiconductors & Semiconductor Equipment — 3.5%
CNEX Labs, Inc., Series E, (Acquired 02/06/2020, Cost: $7,000,000)		3,296,755		6,560,543
Innovium, Inc., Series E, (Acquired 08/21/19, Cost: $8,999,992)		1,060,432		9,087,902
Innovium, Inc., Series F, (Acquired 06/10/20, Cost: $6,999,998)		690,812		6,797,590
Nuvia Inc, Series B, (Acquired 09/17/20, Cost:$12,000,000)		3,741,410		12,000,011
Psiquantum Corp., Series C, (Acquired 09/09/19, Cost: $9,101,310)		1,962,335		9,065,988
SambaNova Systems, Inc., Series C, (Acquired 02/20/20, Cost: $33,904,162)		636,800		35,355,136
				78,867,170
Software — 4.4%
Avidxchange, Inc., (Acquired 07/29/20, Cost: $7,474,330)		152,500		7,474,025
C3 AI, Inc., Series H, (Acquired 08/14/19, Cost:$24,890,190)		4,940,000		26,231,400
Databricks, Inc., Series F, (Acquired 10/22/19, Cost: $13,200,019)		307,346		14,752,608
GitLab, Inc., Series E, (Acquired 09/10/19, Cost: $11,670,984)		626,482		13,375,391
Think & Learn Private Ltd., Series F, (Acquired 09/30/20, Cost: $14,251,080)		4,920		14,206,654

Security	Shares		Value
Software (continued)
Unqork, Inc, Series C, (Acquired 09/18/20, Cost:$7,994,787)		7,300	$	7,994,787
Unqork, Inc., Series B, (Acquired 09/19/19, Cost:$6,801,015)		14,942		16,364,179
				100,399,044
Total Preferred Stocks — 10.3%				234,955,505
Total Preferred Securities — 10.3% (Cost: $228,196,108)				234,955,505
Warrants
IT Services — 0.0%
TRAX Ltd., (Acquired 09/12/19, Cost: $0)(c)(d)		46,928		496,967
Total Warrants — 0.0% (Cost: $ — )				496,967
Total Long-Term Investments — 100.5% (Cost: $1,402,104,021)				2,290,789,054
Short-Term Securities
Money Market Funds — 0.5%
BlackRock Liquidity Funds, T-Fund, Institutional Class, 0.02%(h)(i)(j)		6,836,580		6,836,580
SL Liquidity Series, LLC, Money Market Series, 0.25%(h)(i)		3,992,881		3,994,478
Total Short-Term Securities — 0.5% (Cost: $10,831,112)				10,831,058
Total Investments Before Options Written — 101.0% (Cost: $1,412,935,133)				2,301,620,112
Options Written — (1.1)% (Premiums Received: $(23,838,802))				(25,049,640	)
Total Investments, Net of Options Written — 99.9% (Cost: $1,389,096,331)				2,276,570,472
Other Assets Less Liabilities — 0.1%				2,300,810
Net Assets — 100.0%			$	2,278,871,282

^(a)  Non-income producing security.

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

^(d)  Restricted security as to resale, excluding 144A securities. The Trust held restricted securities with a current value of $335,792,931, representing 14.74% of its net assets as of period end, and an original cost of $310,828,489.

^(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 this security is on loan.

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

^(h)  Affiliate of the Trust.

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

^(j) All or a portion of this security was purchased with the cash collateral from loaned securities.

2

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ)

Affiliates

Investments in issuers considered to be affiliate (s) of the Trust during the period ended September 30, 2020, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliated Issuer	Value at 12/31/19		Purchases at Cost		Proceeds from Sales			Net Realized Gain (Loss)		Change in Unrealized Appreciation (Depreciation)			Value at 09/30/20		Shares Held at 09/30/20		Income			Capital Gain Distributions from Underlying Funds
BlackRock Liquidity Funds, T-Fund, Institutional Class	$	96,230,373	$	—	$	(89,393,793	)(a)	$	—	$	—		$	6,836,580		6,836,580	$	138,751		$	—
SL Liquidity Series, LLC, Money Market Series		66,921,514		—		(62,939,232	)(a)		12,250		(54	)		3,994,478		3,992,881		345,669	(b)		—
								$	12,250	$	(54	)	$	10,831,058			$	484,420		$	—

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

^(b)  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.

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.

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
Atlassian Corp. PLC, Class A	131	10/02/20	USD	175.00	USD	2,381	$	(95,630	)
Livongo Health, Inc.	196	10/02/20	USD	136.00	USD	2,745		(98,000	)
Marvell Technology Group Ltd.	323	10/02/20	USD	38.50	USD	1,282		(45,059	)
RingCentral, Inc., Class A	34	10/02/20	USD	300.00	USD	934		(1,530	)
Snap, Inc., Class A	215	10/02/20	USD	25.00	USD	561		(25,048	)
Square, Inc., Class A	280	10/02/20	USD	172.50	USD	4,551		(14,420	)
Tesla, Inc.	140	10/02/20	USD	360.00	USD	6,006		(968,800	)
Yandex NV, Class A	365	10/02/20	USD	67.00	USD	2,382		(10,950	)
Cree, Inc.	215	10/09/20	USD	67.00	USD	1,370		(13,975	)
Crowdstrike Holdings, Inc., Class A	147	10/09/20	USD	131.00	USD	2,019		(129,360	)
Marvell Technology Group Ltd.	518	10/09/20	USD	39.50	USD	2,056		(57,757	)
MongoDB, Inc.	112	10/09/20	USD	252.50	USD	2,593		(17,080	)
Okta, Inc.	89	10/09/20	USD	227.50	USD	1,903		(13,929	)
Shopify, Inc., Class A	59	10/09/20	USD	1,090.00	USD	6,036		(63,130	)
Snap, Inc., Class A	46	10/09/20	USD	24.50	USD	120		(8,533	)
Snap, Inc., Class A	625	10/09/20	USD	25.00	USD	1,632		(90,312	)
Square, Inc., Class A	193	10/09/20	USD	165.00	USD	3,137		(90,227	)
StoneCo Ltd., Class A	210	10/09/20	USD	57.00	USD	1,111		(5,775	)
Tesla, Inc.	265	10/09/20	USD	410.00	USD	11,369		(838,062	)
Tesla, Inc.	172	10/09/20	USD	475.00	USD	7,379		(125,130	)
Twilio, Inc., Class A	95	10/09/20	USD	265.00	USD	2,347		(32,300	)
Zscaler, Inc.	116	10/09/20	USD	160.00	USD	1,632		(4,292	)
ACM Research, Inc., Class A	641	10/16/20	USD	80.00	USD	4,429		(102,560	)
Afya Ltd., Class A	263	10/16/20	USD	25.00	USD	716		(71,010	)
Afya Ltd., Class A	262	10/16/20	USD	30.00	USD	714		(5,895	)
Agora, Inc., ADR	277	10/16/20	USD	55.00	USD	1,191		(9,695	)
Atlassian Corp. PLC, Class A	102	10/16/20	USD	180.00	USD	1,854		(75,480	)
Avalara, Inc.	167	10/16/20	USD	130.00	USD	2,127		(71,810	)
Bandwidth, Inc., Class A	153	10/16/20	USD	150.00	USD	2,671		(396,270	)
Chegg, Inc.	375	10/16/20	USD	85.00	USD	2,679		(5,625	)
Cloudflare, Inc., Class A	322	10/16/20	USD	44.00	USD	1,322		(26,565	)
CoStar Group, Inc.	40	10/16/20	USD	840.00	USD	3,394		(108,400	)
Cree, Inc.	302	10/16/20	USD	67.50	USD	1,925		(24,915	)
Crowdstrike Holdings, Inc., Class A.	103	10/16/20	USD	120.00	USD	1,414		(192,867	)
Elastic NV	138	10/16/20	USD	105.00	USD	1,489		(91,080	)
Farfetch Ltd., Class A	1,032	10/16/20	USD	30.00	USD	2,597		(26,316	)
Five9, Inc.	232	10/16/20	USD	125.00	USD	3,009		(179,800	)

CONSOLIDATED SCHEDULE OF INVESTMENTS 3

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 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)
GDS Holdings Ltd., ADR	491	10/16/20	USD	80.00	USD	4,018	$	(235,680	)
GoodRx Holdings, Inc., Class A	203	10/16/20	USD	65.00	USD	1,129		(32,988	)
Inphi Corp.	249	10/16/20	USD	120.00	USD	2,795		(32,993	)
Kingsoft Cloud Holdings Ltd., ADR	753	10/16/20	USD	40.00	USD	2,224		(9,413	)
Lattice Semiconductor Corp.	593	10/16/20	USD	30.00	USD	1,717		(42,993	)
Lightspeed POS, Inc.	750	10/16/20	CAD	40.00	CAD	3,200		(190,098	)
Lightspeed POS, Inc.	770	10/16/20	CAD	46.00	CAD	3,285		(23,131	)
Livongo Health, Inc.	374	10/16/20	USD	140.00	USD	5,238		(278,630	)
MongoDB, Inc.	60	10/16/20	USD	240.00	USD	1,389		(39,000	)
Monolithic Power Systems, Inc.	62	10/16/20	USD	281.00	USD	1,734		(61,668	)
Pagseguro Digital Ltd., Class A	353	10/16/20	USD	40.00	USD	1,331		(24,710	)
Power Integrations, Inc.	215	10/16/20	USD	60.00	USD	1,191		(8,600	)
Qorvo, Inc.	112	10/16/20	USD	145.00	USD	1,445		(5,320	)
Qorvo, Inc.	112	10/16/20	USD	140.00	USD	1,445		(11,760	)
Roku, Inc.	183	10/16/20	USD	175.00	USD	3,455		(322,995	)
Shift4 Payments, Inc., Class A	52	10/16/20	USD	60.00	USD	251		(1,170	)
Shift4 Payments, Inc., Class A	31	10/16/20	USD	55.00	USD	150		(2,480	)
Shift4 Payments, Inc., Class A	270	10/16/20	USD	50.00	USD	1,306		(57,375	)
Shopify, Inc., Class A	65	10/16/20	USD	975.00	USD	6,649		(473,525	)
Snap, Inc., Class A	312	10/16/20	USD	25.00	USD	815		(52,884	)
Snap, Inc., Class A	363	10/16/20	USD	24.00	USD	948		(88,390	)
SVMK, Inc.	991	10/16/20	USD	25.00	USD	2,191		(17,343	)
Synopsys, Inc.	117	10/16/20	USD	210.00	USD	2,504		(98,280	)
TAL Education Group, ADR	302	10/16/20	USD	80.00	USD	2,296		(30,200	)
Tencent Music Entertainment Group, ADR	1,424	10/16/20	USD	18.00	USD	2,103		(5,696	)
Tesla, Inc.	145	10/16/20	USD	403.00	USD	6,221		(613,350	)
Tesla, Inc.	173	10/16/20	USD	500.00	USD	7,422		(133,642	)
Twilio, Inc., Class A	114	10/16/20	USD	250.00	USD	2,817		(119,415	)
Unity Software, Inc.	299	10/16/20	USD	100.00	USD	2,610		(98,670	)
Unity Software, Inc.	300	10/16/20	USD	90.00	USD	2,618		(180,000	)
Vroom, Inc.	219	10/16/20	USD	65.00	USD	1,134		(7,665	)
Wix.com Ltd.	105	10/16/20	USD	300.00	USD	2,676		(12,863	)
Wix.com Ltd.	105	10/16/20	USD	270.00	USD	2,676		(53,025	)
XP, Inc., Class A	355	10/16/20	USD	49.00	USD	1,480		(7,828	)
XPeng, Inc., ADR	325	10/16/20	USD	22.50	USD	652		(30,875	)
Zendesk, Inc.	201	10/16/20	USD	92.50	USD	2,069		(224,115	)
ZoomInfo Technologies, Inc., Class A	637	10/16/20	USD	45.00	USD	2,738		(92,365	)
Zynga, Inc., Class A	1,233	10/16/20	USD	10.00	USD	1,124		(9,248	)
Coupa Software, Inc.	107	10/23/20	USD	262.50	USD	2,934		(228,445	)
Cree, Inc.	246	10/23/20	USD	64.00	USD	1,568		(82,410	)
Marvell Technology Group Ltd.	49	10/23/20	USD	41.50	USD	195		(3,749	)
MongoDB, Inc.	116	10/23/20	USD	235.00	USD	2,686		(124,120	)
Okta, Inc.	89	10/23/20	USD	222.50	USD	1,903		(58,517	)
RingCentral, Inc., Class A	38	10/23/20	USD	287.50	USD	1,044		(29,830	)
RingCentral, Inc., Class A	95	10/23/20	USD	275.00	USD	2,609		(130,625	)
Roku, Inc.	51	10/23/20	USD	175.00	USD	963		(99,705	)
Shopify, Inc., Class A	39	10/23/20	USD	1,030.00	USD	3,990		(195,000	)
Snap, Inc., Class A	476	10/23/20	USD	25.50	USD	1,243		(104,958	)
Tesla, Inc.	90	10/23/20	USD	425.00	USD	3,861		(353,250	)
Trade Desk, Inc., Class A	39	10/23/20	USD	450.00	USD	2,023		(296,400	)
Twilio, Inc., Class A	111	10/23/20	USD	255.00	USD	2,743		(117,660	)
Zscaler, Inc.	340	10/23/20	USD	134.00	USD	4,783		(350,200	)
Zynga, Inc., Class A	1,245	10/23/20	USD	9.00	USD	1,135		(53,535	)
Crowdstrike Holdings, Inc., Class A	147	10/30/20	USD	155.00	USD	2,019		(44,541	)
Marvell Technology Group Ltd.	531	10/30/20	USD	41.00	USD	2,108		(62,127	)
MercadoLibre, Inc.	35	10/30/20	USD	1,040.00	USD	3,789		(292,775	)
MongoDB, Inc.	112	10/30/20	USD	217.50	USD	2,593		(251,440	)
NetEase, Inc., ADR	60	10/30/20	USD	480.00	USD	2,728		(59,400	)
RingCentral, Inc., Class A	50	10/30/20	USD	300.00	USD	1,373		(37,250	)
Roku, Inc.	203	10/30/20	USD	220.00	USD	3,833		(77,647	)
Snap, Inc., Class A	477	10/30/20	USD	26.00	USD	1,245		(103,032	)
Square, Inc., Class A	268	10/30/20	USD	155.00	USD	4,356		(396,640	)

4

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 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)
StoneCo Ltd., Class A	211	10/30/20	USD	55.00	USD	1,116	$	(44,310	)
Trade Desk, Inc., Class A	52	10/30/20	USD	490.00	USD	2,698		(268,580	)
Zscaler, Inc.	156	10/30/20	USD	145.00	USD	2,195		(112,710	)
Zynga, Inc., Class A	580	10/30/20	USD	8.50	USD	529		(43,790	)
Zynga, Inc., Class A	665	10/30/20	USD	9.00	USD	606		(31,920	)
Marvell Technology Group Ltd.	161	11/06/20	USD	40.50	USD	639		(22,460	)
MercadoLibre, Inc.	29	11/06/20	USD	1,150.00	USD	3,139		(146,450	)
NetEase, Inc., ADR	68	11/06/20	USD	475.00	USD	3,092		(100,980	)
Okta, Inc.	115	11/06/20	USD	230.00	USD	2,459		(84,812	)
RingCentral, Inc., Class A	34	11/06/20	USD	300.00	USD	934		(36,550	)
Zynga, Inc., Class A	1,269	11/06/20	USD	10.00	USD	1,157		(29,187	)
Afya Ltd., Class A	560	11/20/20	USD	25.00	USD	1,525		(196,000	)
Agora, Inc., ADR	276	11/20/20	USD	60.00	USD	1,186		(37,950	)
Avalara, Inc.	206	11/20/20	USD	130.00	USD	2,623		(214,240	)
Bandwidth, Inc., Class A	153	11/20/20	USD	150.00	USD	2,671		(484,245	)
Cloudflare, Inc., Class A	322	11/20/20	USD	41.00	USD	1,322		(133,630	)
Coupa Software, Inc.	70	11/20/20	USD	280.00	USD	1,920		(143,500	)
Elastic NV	267	11/20/20	USD	110.00	USD	2,881		(212,265	)
Five9, Inc.	232	11/20/20	USD	125.00	USD	3,009		(306,240	)
GoodRx Holdings, Inc., Class A	204	11/20/20	USD	70.00	USD	1,134		(82,620	)
Kingsoft Cloud Holdings Ltd., ADR	376	11/20/20	USD	40.00	USD	1,110		(30,080	)
Kingsoft Cloud Holdings Ltd., ADR	377	11/20/20	USD	45.00	USD	1,113		(16,023	)
Lattice Semiconductor Corp.	593	11/20/20	USD	35.00	USD	1,717		(38,545	)
Livongo Health, Inc.	196	11/20/20	USD	130.00	USD	2,745		(392,000	)
Marvell Technology Group Ltd.	162	11/20/20	USD	41.00	USD	643		(33,696	)
Monolithic Power Systems, Inc.	145	11/20/20	USD	260.00	USD	4,054		(445,875	)
Power Integrations, Inc.	215	11/20/20	USD	59.00	USD	1,191		(48,260	)
Qorvo, Inc.	163	11/20/20	USD	140.00	USD	2,103		(89,650	)
Roku, Inc.	162	11/20/20	USD	195.00	USD	3,059		(289,170	)
Shopify, Inc., Class A	38	11/20/20	USD	1,010.00	USD	3,887		(386,270	)
Snap, Inc., Class A	215	11/20/20	USD	27.00	USD	561		(46,870	)
SVMK, Inc.	547	11/20/20	USD	25.00	USD	1,209		(49,230	)
Synopsys, Inc.	117	11/20/20	USD	220.00	USD	2,504		(105,885	)
TAL Education Group, ADR	303	11/20/20	USD	82.50	USD	2,304		(85,597	)
Twilio, Inc., Class A	108	11/20/20	USD	260.00	USD	2,669		(204,660	)
Vroom, Inc.	311	11/20/20	USD	60.00	USD	1,610		(118,180	)
XP, Inc., Class A	470	11/20/20	USD	45.00	USD	1,959		(110,450	)
XPeng, Inc., ADR	655	11/20/20	USD	30.00	USD	1,315		(52,400	)
XPeng, Inc., ADR	325	11/20/20	USD	25.00	USD	652		(47,937	)
Yandex NV, Class A	353	11/20/20	USD	70.00	USD	2,303		(96,192	)
Zendesk, Inc.	269	11/20/20	USD	97.50	USD	2,769		(293,210	)
							$	(17,133,845	)

OTC Options Written

Description	Counterparty	Number of Contracts	Expiration Date	Exercise Price		Notional Amount (000)		Value
Call
Arco Platform Ltd., Class A	Citibank N.A.	17,200	10/01/20	USD	48.00	USD	702	$	—
Arco Platform Ltd., Class A	Credit Suisse International	5,500	10/01/20	USD	43.44	USD	225		(16	)
Samsung SDI Co. Ltd.	JPMorgan Chase Bank N.A.	11,000	10/07/20	USD	451,880.00	USD	4,752,382		(31,040	)
Altium Ltd.	Morgan Stanley & Co. International PLC	95,000	10/14/20	AUD	37.26	AUD	3,449		(31,914	)
Arco Platform Ltd., Class A	Credit Suisse International	5,500	10/14/20	USD	43.44	USD	225		(3,512	)
Arco Platform Ltd., Class A	JPMorgan Chase Bank N.A.	17,500	10/14/20	USD	44.37	USD	715		(7,746	)
Endava PLC, ADR	UBS AG	34,000	10/14/20	USD	54.90	USD	2,147		(281,631	)
Weimob Inc.	Societe Generale	1,000,000	10/14/20	HKD	11.71	HKD	10,487		(36,979	)
ASMedia Technology, Inc	Citibank N.A.	42,000	10/15/20	USD	1,869.40	USD	61,674		(5,524	)
Meituan Dianping, Class B	Morgan Stanley & Co. International PLC	88,900	10/15/20	HKD	269.15	HKD	21,704		(39,773	)
Rakus Co. Ltd.	JPMorgan Chase Bank N.A.	93,400	10/15/20	JPY	1,522.56	JPY	176,721		(322,857	)
Shop Apotheke Europe NV	Goldman Sachs International	13,100	10/15/20	EUR	141.44	EUR	1,946		(165,344	)

CONSOLIDATED SCHEDULE OF INVESTMENTS 5

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 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)
Tyro Payments Ltd.	Morgan Stanley & Co. International PLC	318,500	10/15/20	AUD	3.40	AUD	1,157	$	(63,479	)
Weimob Inc.	JPMorgan Chase Bank N.A.	400,000	10/20/20	HKD	14.36	HKD	4,195		(2,989	)
Arco Platform Ltd., Class A	JPMorgan Chase Bank N.A.	17,400	10/21/20	USD	47.17	USD	711		(4,829	)
BE Semiconductor Industries NV	Morgan Stanley & Co. International PLC	42,000	10/21/20	EUR	38.61	EUR	1,536		(36,059	)
Endava PLC, ADR	JPMorgan Chase Bank N.A.	19,300	10/21/20	USD	55.55	USD	1,219		(149,509	)
Rakus Co. Ltd.	Goldman Sachs International	128,400	10/21/20	JPY	1,666.53	JPY	242,944		(298,312	)
Shop Apotheke Europe NV	Goldman Sachs International	13,200	10/21/20	EUR	142.80	EUR	1,961		(174,709	)
SOITEC	Morgan Stanley & Co. International PLC	5,200	10/21/20	EUR	108.96	EUR	639		(88,772	)
Tyro Payments Ltd.	Goldman Sachs International	495,000	10/21/20	AUD	3.62	AUD	1,798		(57,796	)
Xero Ltd.	JPMorgan Chase Bank N.A.	29,500	10/21/20	AUD	98.31	AUD	3,004		(112,039	)
GMO Payment Gateway, Inc.	JPMorgan Chase Bank N.A.	29,800	10/22/20	JPY	10,969.02	JPY	336,671		(182,211	)
Silergy Corp.	UBS AG	46,000	10/22/20	USD	1,786.12	USD	78,985		(74,513	)
STMicroelectronics NV	Credit Suisse International	39,400	10/22/20	EUR	26.02	EUR	1,031		(57,587	)
Locaweb Servicos De Internet SA	Morgan Stanley & Co. International PLC	374,300	10/23/20	USD	63.16	USD	22,312		(133,891	)
Magazine Luiza SA	Credit Suisse International	431,800	10/23/20	USD	92.04	USD	38,516		(208,071	)
Meituan Dianping, Class B	Citibank N.A.	194,000	10/27/20	HKD	243.60	HKD	47,362		(342,771	)
Arco Platform Ltd., Class A	JPMorgan Chase Bank N.A.	17,400	10/28/20	USD	47.67	USD	711		(6,681	)
Weimob Inc.	JPMorgan Chase Bank N.A.	806,000	10/28/20	HKD	12.39	HKD	8,452		(37,625	)
Farfetch Ltd., Class A	JPMorgan Chase Bank N.A.	88,300	11/02/20	USD	26.50	USD	2,222		(132,752	)
Altium Ltd.	Morgan Stanley & Co. International PLC	40,900	11/04/20	AUD	36.20	AUD	1,485		(43,427	)
ASMedia Technology, Inc.	Goldman Sachs International	17,000	11/04/20	USD	1,529.54	USD	24,963		(56,305	)
Freee KK	JPMorgan Chase Bank N.A.	44,900	11/04/20	JPY	6,814.50	JPY	359,119		(565,261	)
Kakao Corp.	JPMorgan Chase Bank N.A.	11,400	11/04/20	USD	370,230.87	USD	4,145,726		(157,237	)
Kingdee International Software Group Co. Ltd.	JPMorgan Chase Bank N.A.	1,258,000	11/04/20	HKD	20.51	HKD	25,430		(237,813	)
Lasertec Corp.	Goldman Sachs International	60,000	11/04/20	JPY	8,819.72	JPY	520,146		(294,090	)
Rakus Co. Ltd.	JPMorgan Chase Bank N.A.	84,000	11/04/20	JPY	1,877.20	JPY	158,935		(113,205	)
SOITEC	Citibank N.A.	10,000	11/04/20	EUR	127.10	EUR	1,228		(39,507	)
STMicroelectronics NV	Credit Suisse International	39,000	11/04/20	EUR	26.71	EUR	1,020		(45,739	)
Weimob Inc.	JPMorgan Chase Bank N.A.	1,234,000	11/04/20	HKD	11.10	HKD	12,941		(132,348	)
ZoomInfo Technologies, Inc., Class A	UBS AG	63,700	11/05/20	USD	35.25	USD	2,738		(518,833	)
Delivery Hero SE.	Goldman Sachs International	49,600	11/06/20	EUR	93.45	EUR	4,854		(527,776	)
Kakao Corp.	JPMorgan Chase Bank N.A.	4,600	11/06/20	USD	382,130.00	USD	1,672,837		(47,608	)
Kingdee International Software Group Co. Ltd.	JPMorgan Chase Bank N.A.	1,001,000	11/06/20	HKD	20.03	HKD	20,235		(220,598	)
Samsung CDI Co. Ltd.	JPMorgan Chase Bank N.A.	6,200	11/06/20	USD	458,865.00	USD	2,678,616		(67,322	)
Silergy Corp.	Citibank N.A.	46,000	11/06/20	USD	1,880.48	USD	78,985		(66,911	)
SOITEC	UBS AG	14,600	11/06/20	EUR	129.37	EUR	1,793		(47,486	)
Tencent Music Entertainment Group, ADR	Credit Suisse International	112,300	11/09/20	USD	15.94	USD	1,659		(39,861	)
Adyen NV	Barclays Bank PLC	3,900	11/10/20	EUR	1,658.59	EUR	6,135		(181,430	)
Delivery Hero SE	Goldman Sachs International	17,000	11/10/20	EUR	102.74	EUR	1,664		(76,948	)
Freee KK	JPMorgan Chase Bank N.A.	46,600	11/10/20	JPY	8,095.50	JPY	372,716		(247,555	)
Inphi Corp.	JPMorgan Chase Bank N.A.	33,200	11/10/20	USD	111.00	USD	3,727		(246,014	)
Lasertec Corp.	JPMorgan Chase Bank N.A.	15,600	11/10/20	JPY	8,949.96	JPY	135,238		(70,096	)
SOITEC	Goldman Sachs International	5,200	11/10/20	EUR	127.82	EUR	639		(21,712	)
BE Semiconductor Industries NV	Goldman Sachs + Co Llc	8,400	11/12/20	EUR	37.64	EUR	307		(15,690	)
Endava PLC, ADR	Bank Of America, N.a.	28,500	11/12/20	USD	64.84	USD	1,800		(51,132	)
GMO Payment Gateway, Inc.	Ubs Ag	24,000	11/12/20	JPY	11,631.82	JPY	271,144		(96,689	)
Xero Ltd.	Morgan Stanley Co Incorporated	27,200	11/12/20	AUD	104.78	AUD	2,770		(49,071	)
Charles Schwab Corp.	JPMorgan Chase Bank N.A.	37,500	11/16/20	USD	70.96	USD	2,679		(196,370	)
Altium Ltd.	Morgan Stanley Co Incorporated	46,500	11/18/20	AUD	37.00	AUD	1,688		(38,281	)
Kingdee International Software Group Co. Ltd.	Jpmorgan Chase Bank Na London	250,000	11/18/20	HKD	21.13	HKD	5,054		(34,274	)
Delivery Hero SE	Goldman Sachs + Co Llc	3,800	11/19/20	EUR	103.30	EUR	372		(22,442	)
SOITEC	Ubs Ag	3,800	11/19/20	EUR	126.79	EUR	467		(20,347	)
Weimob, Inc.	Jpmorgan Chase Bank Na London	656,000	11/19/20	HKD	10.96	HKD	6,879		(45,319	)
Farfetch Ltd., Class A	JPMorgan Chase Bank N.A.	88,300	11/30/20	USD	26.75	USD	2,222		(190,167	)
								$	(7,915,795	)

6

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ)

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)

• 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.

Certain investments of the Trust were fair valued using net asset value (“NAV”) per share as no quoted market value is available and therefore have been excluded from the fair value hierarchy.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy. The breakdown of the Trust’s investments 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
Automobiles	$	96,032,561	$	—		$	—	$	96,032,561
Banks		—		—			36,690,965		36,690,965
Capital Markets		23,946,633		—			—		23,946,633
Diversified Consumer Services		72,640,347		—			—		72,640,347
Diversified Telecommunication Services		23,208,209		—			—		23,208,209
Electronic Equipment, Instruments & Components		—		27,646,162			—		27,646,162
Entertainment		81,223,803		25,928,164			—		107,151,967
Health Care Technology		56,089,530		—			—		56,089,530
Interactive Media & Services		75,191,306		49,653,687			—		124,844,993
Internet & Direct Marketing Retail		61,038,015		93,797,558			—		154,835,573
IT Services		352,554,167		65,604,398			32,473,439		450,632,004
Multiline Retail		29,814,630		—			—		29,814,630
Professional Services		14,873,532		—			—		14,873,532
Semiconductors & Semiconductor Equipment		167,517,360		122,076,547			—		289,593,907
Software		339,323,802		162,898,943			32,485,443		534,708,188
Specialty Retail		12,627,381		—			—		12,627,381
Preferred Securities
Preferred Stocks		—		—			234,955,505		234,955,505
Warrants		—		—			496,967		496,967
Short-Term Securities
Money Market Funds		6,836,580		—			—		6,836,580
	$	1,412,917,856	$	547,605,459		$	337,102,319		2,297,625,634
Investments Valued at NAV(a)									3,994,478
					��
								$	2,301,620,112

CONSOLIDATED SCHEDULE OF INVESTMENTS 7

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ)

Fair Value Hierarchy as of Period End (continued)

	Level 1			Level 2			Level 3		Total
Derivative Financial Instruments(b)
Liabilities
Equity Contracts	$	(17,016,089	)	$	(8,033,551	)	$	—	$	(25,049,640	)

^(a)  Certain investments of the Trust were fair valued using NAV per share as no quoted market value is available and therefore have been excluded from the fair value hierarchy.

^(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		Warrants			Preferred Stocks		Total
Assets
Opening balance, as of December 31, 2019	$	29,199,661	$	53,498		$	91,720,586	$	120,973,745
Transfers into Level 3		—		—			—		—
Transfers out of Level 3		—		—			—		—
Accrued discounts/premiums		—		—			—		—
Net realized gain (loss)
Net change in unrealized appreciation (depreciation)(a)		15,939,678		443,470			6,638,514		23,021,662
Purchases		56,510,508		(1	)		136,596,405		193,106,912
Sales		—		—			—		—
Closing balance, as of September 30, 2020	$	101,649,847	$	496,967		$	234,955,505	$	337,102,319
Net change in unrealized appreciation (depreciation) on investments still held at September 30, 2020(a)	$	15,939,678	$	443,470		$	6,638,514	$	23,021,662

^(a)  Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at September 30, 2020 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 investments as of period end. The table does not include Level 3 investments with values based upon unadjusted third party pricing information in the amount of $19,556,184. A significant change in the third party information could result in a significantly lower or higher value of such Level 3 investments.

	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)	$	85,649,989	Market		Revenue Multiple	5.75x		—
					Recent Transactions	—		—
Preferred Stocks(d)(e)		234,955,505	Market		Revenue Multiple	1.40x - 21.50x		8.77x
					Volatility	39% - 61%		53%
					Time to Exit	3.0 - 5.0		3.3
					Recent Transactions	—		—
Warrants		496,967	Market		Revenue Multiple	9.08x		—
					Volatility	44%		—
					Time to Exit	0.5		—
	$	321,102,461

^(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, 2020, the valuation technique for investments classified as Common Stocks amounting to $36,690,965 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.

^(c)  For the period end September 30, 2020, the valuation technique for investments classified as Common Stocks amounting to $16,473,581 changed to Transaction Price approach. The investments were previously valued utilizing Option Pricing Model approach. 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, 2020, the valuation technique for investments classified as Preferred Stocks amounting to $16,364,179 changed to Transaction Price approach. The investments were previously valued utilizing Option Pricing Model 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, 2020, the valuation technique for investments classified as Preferred Stocks amounting to $34,967,012 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.

8

Consolidated Schedule of Investments  (unaudited) (continued) September 30, 2020 BlackRock Science and Technology Trust II (BSTZ)

Currency Abbreviation
AUD	Australian Dollar
CAD	Canadian Dollar
EUR	Euro
HKD	Hong Kong Dollar
JPY	Japanese Yen
USD	United States Dollar
Portfolio Abbreviation
ADR	American Depositary Receipt
CDI	CREST Depository Interest
OTC	Over-the-Counter

CONSOLIDATED SCHEDULE OF INVESTMENTS 9