Consolidated Schedule of Investments (unaudited)
September 30, 2024
BlackRock Science and Technology Trust (BST)
(Percentages shown are based on Net Assets)

 
Security
 
 
Shares
Value
Common Stocks
Aerospace & Defense — 1.5%
Anduril Industries, Inc.(a)(b)
 
920,107
$ 19,999,998
Automobiles — 1.6%
Tesla, Inc.(b)
 
80,979
21,186,536
Broadline Retail(b) — 4.3%
Amazon.com, Inc.
 
175,474
32,696,071
MercadoLibre, Inc.
 
11,344
23,277,434
 
 
55,973,505
Capital Markets — 0.5%
S&P Global, Inc.
 
12,819
6,622,552
Communications Equipment — 1.5%
Arista Networks, Inc.(b)
 
27,012
10,367,746
Astranis, Series D(a)(b)
 
321,116
3,002,435
Motorola Solutions, Inc.
 
15,039
6,761,986
 
 
20,132,167
Diversified Consumer Services(a)(b)(c) — 0.8%
Grammarly, Inc., (Acquired 11/17/21, Cost:
$18,749,975)
 
715,323
10,279,192
Think & Learn Private Ltd., Class J-B, (Acquired
09/30/20, Cost: $1,524,948)
 
997
—
 
 
10,279,192
Electrical Equipment — 0.6%
Vertiv Holdings Co., Class A
 
77,294
7,689,980
Electronic Equipment, Instruments & Components — 0.6%
Coherent Corp.(b)
 
81,620
7,256,834
Entertainment — 2.9%
Electronic Arts, Inc.
 
39,032
5,598,750
Nintendo Co. Ltd.
 
143,600
7,675,616
Spotify Technology SA(b)
 
48,098
17,725,556
Take-Two Interactive Software, Inc.(b)
 
49,044
7,538,553
 
 
38,538,475
Financial Services — 1.3%
Mastercard, Inc., Class A
 
33,698
16,640,072
Ground Transportation — 0.7%
Uber Technologies, Inc.(b)
 
115,732
8,698,417
Industrial Conglomerates — 0.9%
Hitachi Ltd.
 
433,100
11,484,654
Interactive Media & Services — 4.7%
Alphabet, Inc., Class A
 
87,399
14,495,124
Meta Platforms, Inc., Class A
 
73,645
42,157,344
Webtoon Entertainment, Inc.(b)
 
445,414
5,095,536
 
 
61,748,004
IT Services(b) — 2.4%
Automattic, Inc., Series E, (Acquired 02/03/21, Cost:
$7,999,945)(a)(c)
 
94,117
3,535,976
Farmer’s Business Network, Inc.(a)
 
203,366
538,920
Klarna Holdings AB, (Acquired 08/07/19, Cost:
$7,971,978)(a)(c)
 
26,430
13,161,741
Security
 
 
Shares
Value
IT Services (continued)
MongoDB, Inc., Class A
 
34,040
$ 9,202,714
Patreon, Inc., (Acquired 08/19/21, Cost:
$3,352,226)(a)(c)
 
59,524
1,411,314
Teya Services Ltd., (Acquired 12/17/21, Cost:
$24,999,987)(a)(c)
 
12,871
3,639,919
 
 
31,490,584
Professional Services — 1.5%
Equifax, Inc.
 
20,176
5,928,919
RELX PLC
 
303,547
14,332,371
 
 
20,261,290
Semiconductors & Semiconductor Equipment — 30.5%
Advanced Micro Devices, Inc.(b)
 
78,134
12,820,227
ARM Holdings PLC, ADR(b)(d)
 
87,784
12,553,990
ASM International NV
 
21,537
14,209,232
ASML Holding NV
 
31,211
25,977,166
Broadcom, Inc.
 
368,713
63,602,992
Credo Technology Group Holding Ltd.(b)
 
405,682
12,495,006
Lam Research Corp.
 
15,753
12,855,708
Marvell Technology, Inc.
 
127,705
9,210,085
Micron Technology, Inc.
 
223,346
23,163,214
Monolithic Power Systems, Inc.
 
19,470
18,000,015
NVIDIA Corp.(e)(f)
 
1,464,842
177,890,410
Taiwan Semiconductor Manufacturing Co. Ltd., ADR
 
95,749
16,628,729
 
 
399,406,774
Software — 22.4%
Autodesk, Inc.(b)
 
34,155
9,409,019
Cadence Design Systems, Inc.(b)
 
130,008
35,236,068
Constellation Software, Inc./Canada
 
4,113
13,381,049
Crowdstrike Holdings, Inc., Class A(b)
 
29,484
8,269,378
CyberArk Software Ltd.(b)
 
21,491
6,266,991
Databricks, Inc., (Acquired 07/24/20, Cost:
$960,476)(a)(b)(c)
 
59,997
4,878,356
Datadog, Inc., Class A(b)
 
43,939
5,055,621
DataRobot, Inc., (Acquired 03/01/21, Cost:
$583,275)(a)(b)(c)
 
38,789
55,468
Guidewire Software, Inc.(b)
 
37,999
6,951,537
Intuit, Inc.
 
21,492
13,346,532
Microsoft Corp.(f)
 
291,928
125,616,618
Oracle Corp.
 
163,641
27,884,426
Palo Alto Networks, Inc.(b)
 
22,695
7,757,151
ServiceNow, Inc.(b)
 
20,866
18,662,342
Snorkel AI, Inc., (Acquired 06/30/21, Cost:
$997,636)(a)(b)(c)
 
66,422
427,093
Snyk Ltd., Ordinary Shares, (Acquired 09/02/21, Cost:
$5,192,307)(a)(b)(c)
 
361,972
3,004,368
Xero Ltd.(b)
 
76,718
7,930,025
 
 
294,132,042
Specialty Retail — 0.0%
AceVector Limited, Series I, (Acquired 08/31/18, Cost:
$1,998,435)(a)(b)(c)
 
168,640
74,076
Consolidated Schedule of Investments
1
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
(Percentages shown are based on Net Assets)
Security
 
 
Shares
Value
Technology Hardware, Storage & Peripherals — 8.4%
Apple, Inc.(f)
 
472,328
$   110,052,424
Total Common Stocks — 87.1%
(Cost: $500,786,584)
1,141,667,576
 
 
 
Par
(000)
 
Convertible Notes
Financial Services — 0.0%
Wyre, Inc., (Acquired: 12/14/21, Cost: $8,000,000),
6.00%, 12/08/24(a)(c)
$
80
1
Total Convertible Notes — 0.0%
(Cost: $8,000,000)
1
 
 
 
 
Shares
 
Preferred Securities
Preferred Stocks — 13.7%(a)(b)
Chemicals — 0.4%
Solugen, Inc., Series C, (Acquired 09/02/21, Cost:
$9,999,977)(c)
 
269,284
4,925,204
Consumer Staples Distribution & Retail — 1.0%
Grubmarket, Inc., Series E, (Acquired 10/18/21, Cost:
$6,999,994)(c)
 
709,724
13,406,686
Diversified Consumer Services(c) — 0.5%
Grammarly, Inc., Series 3, (Acquired 11/17/21, Cost:
$6,249,992)
 
238,441
3,426,397
Think & Learn Private Ltd., Series F, (Acquired 09/30/20,
Cost: $3,052,975)
 
1,054
—
TRAX Ltd.
 
(Acquired 09/12/19, Cost: $4,000,013)
 
106,667
2,442,674
(Acquired 02/18/21, Cost: $1,999,989)
 
38,361
878,467
 
 
6,747,538
Diversified Telecommunication Services — 0.2%
Discord, Inc., Series I, (Acquired 09/13/21, Cost:
$7,000,088)(c)
 
12,713
3,114,431
Financial Services(c)(g) — 1.1%
Trumid Holdings LLC
 
Class J-A, (Acquired 07/24/20, Cost: $2,499,716)
 
5,038
3,353,192
Class J-B, (Acquired 07/24/20, Cost: $1,499,830)
 
5,038
3,353,192
Class L, (Acquired 09/15/21, Cost: $9,999,695)
 
11,420
7,600,924
 
 
14,307,308
Interactive Media & Services — 0.3%
ByteDance Ltd., Series E-1, (Acquired 11/11/20, Cost:
$2,857,834)(c)
 
24,110
4,099,664
IT Services(c) — 2.2%
Deep Instinct Ltd., Series D-2, (Acquired 03/19/21, Cost:
$2,999,391)
 
493,493
2,205,914
Security
 
 
Shares
Value
IT Services (continued)
MNTN Digital, Inc., Series D, (Acquired 11/05/21, Cost:
$24,999,980)
 
1,088,598
$ 16,067,706
Patreon, Inc., Series D, (Acquired 07/14/21, Cost:
$6,666,632)
 
119,047
2,822,604
Voltron Data, Inc.
 
Series A, (Acquired 01/18/22, Cost: $10,000,000)
 
6,201,935
4,899,529
Series SEED, (Acquired 07/14/21, Cost: $5,000,000)
 
9,090,909
2,545,455
 
 
28,541,208
Professional Services — 0.4%
Ant Group Co., Ltd., Series C
 
1,703,548
4,667,722
Semiconductors & Semiconductor Equipment — 3.4%
PsiQuantum Corp.(c)
 
Series C, (Acquired 09/09/19, Cost: $3,200,234)
 
690,003
17,070,674
Series D, (Acquired 05/21/21, Cost: $5,000,025)
 
190,650
5,595,578
Rivos, Inc.
 
Series A1, (Acquired 12/03/21, Cost: $7,203,709)(c)
 
2,700,558
6,130,267
Series A2
 
2,464,862
5,052,967
Series A3
 
1,027,026
2,105,403
SambaNova Systems, Inc., Series C, (Acquired
02/20/20, Cost: $9,972,125)(c)
 
187,300
8,171,899
 
 
44,126,788
Software — 4.2%
Bolt Financial, Inc., Series E, (Acquired 01/18/22, Cost:
$29,999,955)(c)
 
598,682
7,244,052
Canva Common Stock
 
9,375
9,806,719
Databricks, Inc.(c)
 
Series F, (Acquired 10/22/19, Cost: $3,999,999)
 
279,405
22,718,421
Series G, (Acquired 02/01/21, Cost: $4,500,001)
 
76,113
6,188,748
DataRobot, Inc., Series F, (Acquired 10/27/20, Cost:
$2,999,996)(c)
 
228,276
949,628
Prosimo, Inc., Series B, (Acquired 11/04/21, Cost:
$4,999,998)(c)
 
2,515,811
1,987,491
Snorkel AI, Inc., Series C, (Acquired 06/30/21, Cost:
$4,999,985)(c)
 
332,896
2,140,521
Snyk Ltd., Series F, (Acquired 09/02/21, Cost:
$4,807,688)(c)
 
337,018
2,797,249
Unqork, Inc.(c)
 
Series B, (Acquired 09/19/19, Cost: $3,198,416)
 
281,080
1,604,967
Series C, (Acquired 09/18/20, Cost: $1,303,260)
 
47,600
345,576
 
 
55,783,372
 
179,719,921
Total Preferred Securities — 13.7%
(Cost: $215,304,302)
179,719,921
2
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
(Percentages shown are based on Net Assets)
Security
 
 
Shares
Value
Warrants
Software — 0.0%
Constellation Software, Inc., (Issued 08/29/23, 1 Share
for 1 Warrant, Expires 03/31/40, Strike Price CAD
11.50)(a)(b)
 
3,923
$            —
Total Warrants — 0.0%
(Cost: $ — )
—
Total Long-Term Investments — 100.8%
(Cost: $724,090,886)
1,321,387,498
Short-Term Securities
Money Market Funds — 0.5%
BlackRock Cash Funds: Institutional, SL Agency
Shares, 5.05%(h)(i)(j)
 
5,229,808
5,234,515
BlackRock Liquidity Funds, T-Fund, Institutional Shares,
4.83%(h)(i)
 
1,256,970
1,256,970
Total Short-Term Securities — 0.5%
(Cost: $6,488,883)
6,491,485
Total Investments Before Options Written — 101.3%
(Cost: $730,579,769)
1,327,878,983
Options Written — (1.2)%
(Premiums Received: $(11,924,021))
(15,263,635
)
Total Investments, Net of Options Written — 100.1%
(Cost: $718,655,748)
1,312,615,348
Liabilities in Excess of Other Assets — (0.1)%
(1,573,541
)
Net Assets — 100.0%
$ 1,311,041,807
 
(a)
Security is valued using significant unobservable inputs and is classified as Level 3 in the
fair value hierarchy.
(b)
Non-income producing security.
(c)
Restricted security as to resale, excluding 144A securities. The Trust held restricted
securities with a current value of $198,554,614, representing 15.1% of its net assets as of
period end, and an original cost of $274,342,685.
(d)
All or a portion of this security is on loan.
(e)
All or a portion of the security has been pledged as collateral in connection with
outstanding OTC derivatives.
(f)
All or a portion of the security has been pledged and/or segregated as collateral in
connection with outstanding exchange-traded options written.
(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.
For purposes of this report, industry and sector sub-classifications may differ from those utilized by the Trust for compliance purposes.
Affiliates
Investments in issuers considered to be affiliate(s) of the Trust during the period ended September 30, 2024 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows: 
Affiliated Issuer
Value at
12/31/23
Purchases
at Cost
Proceeds
from Sales
Net
Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Value at
09/30/24
Shares
Held at
09/30/24
Income
Capital Gain
Distributions
from
Underlying
Funds
BlackRock Cash Funds: Institutional, SL Agency Shares
$ —
$ 5,233,330
(a)
$ —
$ (1,416
)
$ 2,601
$ 5,234,515
5,229,808
$ 26,051
(b)
$ —
BlackRock Liquidity Funds, T-Fund, Institutional Shares
365,499
891,471
(a)
—
—
—
1,256,970
1,256,970
255,683
—
SL Liquidity Series, LLC, Money Market Series(c)
5,860,878
—
(5,861,604
)(a)
231
495
—
—
10,431
(b)
—
 
$ (1,185
)
$ 3,096
$ 6,491,485
$ 292,165
$ —
 
(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.
(c)
As of period end, the entity is no longer held.
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 
 
 
Alphabet, Inc., Class A
129
10/04/24
USD
170.00
USD
2,139
$ (5,870
)
Amazon.com, Inc.
55
10/04/24
USD
185.00
USD
1,025
(17,463
)
Autodesk, Inc.
88
10/04/24
USD
260.00
USD
2,424
(128,920
)
Consolidated Schedule of Investments
3
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
 
Exchange-Traded Options Written (continued)
Description
Number of
Contracts
Expiration
Date
Exercise Price
Notional
Amount (000)
Value
Call (continued)
 
 
Broadcom, Inc.
227
10/04/24
USD
175.00
USD
3,916
$ (45,854
)
Crowdstrike Holdings, Inc., Class A
53
10/04/24
USD
295.00
USD
1,486
(4,267
)
Electronic Arts, Inc.
80
10/04/24
USD
152.50
USD
1,148
(2,000
)
Marvell Technology, Inc.
95
10/04/24
USD
76.00
USD
685
(2,613
)
Mastercard, Inc., Class A
12
10/04/24
USD
475.00
USD
593
(23,010
)
MercadoLibre, Inc.
8
10/04/24
USD
2,100.00
USD
1,642
(6,480
)
Meta Platforms, Inc., Class A
87
10/04/24
USD
530.00
USD
4,980
(374,970
)
Micron Technology, Inc.
61
10/04/24
USD
113.00
USD
633
(1,220
)
MongoDB, Inc., Class A
43
10/04/24
USD
295.00
USD
1,163
(1,097
)
ServiceNow, Inc.
34
10/04/24
USD
845.00
USD
3,041
(173,230
)
Tesla, Inc.
93
10/04/24
USD
230.00
USD
2,433
(299,460
)
Uber Technologies, Inc.
136
10/04/24
USD
75.00
USD
1,022
(17,544
)
Advanced Micro Devices, Inc.
77
10/11/24
USD
160.00
USD
1,263
(58,905
)
Alphabet, Inc., Class A
134
10/11/24
USD
165.00
USD
2,222
(47,570
)
Amazon.com, Inc.
123
10/11/24
USD
185.00
USD
2,292
(55,350
)
Arista Networks, Inc.
46
10/11/24
USD
355.00
USD
1,766
(140,070
)
Datadog, Inc., Class A
10
10/11/24
USD
115.00
USD
115
(2,970
)
Marvell Technology, Inc.
103
10/11/24
USD
80.00
USD
743
(1,957
)
Meta Platforms, Inc., Class A
77
10/11/24
USD
525.00
USD
4,408
(379,610
)
Micron Technology, Inc.
64
10/11/24
USD
99.00
USD
664
(38,560
)
NVIDIA Corp.
608
10/11/24
USD
130.00
USD
7,384
(57,456
)
NVIDIA Corp.
391
10/11/24
USD
120.00
USD
4,748
(178,882
)
Taiwan Semiconductor Manufacturing Co. Ltd., ADR
150
10/11/24
USD
180.00
USD
2,605
(36,375
)
Vertiv Holdings Co., Class A
336
10/11/24
USD
90.00
USD
3,343
(349,440
)
Advanced Micro Devices, Inc.
97
10/18/24
USD
165.00
USD
1,592
(59,655
)
Alphabet, Inc., Class A
1
10/18/24
USD
175.00
USD
17
(78
)
Amazon.com, Inc.
186
10/18/24
USD
185.00
USD
3,466
(100,440
)
Broadcom, Inc.
221
10/18/24
USD
150.00
USD
3,812
(514,377
)
Cadence Design Systems, Inc.
260
10/18/24
USD
283.00
USD
7,047
(100,340
)
Coherent Corp.
73
10/18/24
USD
85.00
USD
649
(44,165
)
Credo Technology Group Holding Ltd.
1,222
10/18/24
USD
28.67
USD
3,764
(350,770
)
CyberArk Software Ltd.
96
10/18/24
USD
300.00
USD
2,799
(43,200
)
Equifax, Inc.
90
10/18/24
USD
310.00
USD
2,645
(21,825
)
Guidewire Software, Inc.
85
10/18/24
USD
160.00
USD
1,555
(201,025
)
Intuit, Inc.
31
10/18/24
USD
650.00
USD
1,925
(11,548
)
Lam Research Corp.
39
10/18/24
USD
910.00
USD
3,183
(29,543
)
Mastercard, Inc., Class A
29
10/18/24
USD
480.00
USD
1,432
(49,663
)
MercadoLibre, Inc.
23
10/18/24
USD
2,060.00
USD
4,720
(109,135
)
Micron Technology, Inc.
64
10/18/24
USD
100.00
USD
664
(40,000
)
Monolithic Power Systems, Inc.
17
10/18/24
USD
900.00
USD
1,572
(86,445
)
Motorola Solutions, Inc.
68
10/18/24
USD
420.00
USD
3,057
(212,500
)
NVIDIA Corp.
606
10/18/24
USD
140.00
USD
7,359
(26,664
)
NVIDIA Corp.
416
10/18/24
USD
120.00
USD
5,052
(237,120
)
S&P Global, Inc.
37
10/18/24
USD
510.00
USD
1,911
(44,400
)
ServiceNow, Inc.
30
10/18/24
USD
830.00
USD
2,683
(213,300
)
Spotify Technology SA
114
10/18/24
USD
350.00
USD
4,201
(265,905
)
Take-Two Interactive Software, Inc.
104
10/18/24
USD
160.00
USD
1,599
(13,468
)
Tesla, Inc.
60
10/18/24
USD
255.00
USD
1,570
(127,950
)
Tesla, Inc.
94
10/18/24
USD
230.00
USD
2,459
(354,145
)
Uber Technologies, Inc.
136
10/18/24
USD
77.50
USD
1,022
(22,576
)
Vertiv Holdings Co., Class A
11
10/18/24
USD
95.00
USD
109
(7,865
)
Alphabet, Inc., Class A
123
10/25/24
USD
160.00
USD
2,040
(114,390
)
Amazon.com, Inc.
71
10/25/24
USD
200.00
USD
1,323
(9,514
)
ARM Holdings PLC, ADR
305
10/25/24
USD
155.00
USD
4,362
(137,250
)
Broadcom, Inc.
226
10/25/24
USD
150.00
USD
3,899
(537,880
)
Coherent Corp.
294
10/25/24
USD
84.00
USD
2,614
(210,210
)
Crowdstrike Holdings, Inc., Class A
79
10/25/24
USD
290.00
USD
2,216
(62,410
)
Electronic Arts, Inc.
15
10/25/24
USD
152.50
USD
215
(750
)
Lam Research Corp.
23
10/25/24
USD
835.00
USD
1,877
(79,810
)
Marvell Technology, Inc.
182
10/25/24
USD
78.00
USD
1,313
(18,655
)
Mastercard, Inc., Class A
30
10/25/24
USD
505.00
USD
1,481
(13,500
)
Micron Technology, Inc.
157
10/25/24
USD
95.00
USD
1,628
(162,887
)
4
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
 
Exchange-Traded Options Written (continued)
Description
Number of
Contracts
Expiration
Date
Exercise Price
Notional
Amount (000)
Value
Call (continued)
 
 
MongoDB, Inc., Class A
55
10/25/24
USD
290.00
USD
1,487
$ (33,550
)
NVIDIA Corp.
416
10/25/24
USD
120.00
USD
5,052
(274,560
)
NVIDIA Corp.
201
10/25/24
USD
116.00
USD
2,441
(181,905
)
Oracle Corp.
252
10/25/24
USD
162.50
USD
4,294
(236,250
)
Palo Alto Networks, Inc.
40
10/25/24
USD
355.00
USD
1,367
(22,100
)
S&P Global, Inc.
20
10/25/24
USD
530.00
USD
1,033
(14,600
)
Taiwan Semiconductor Manufacturing Co. Ltd., ADR
49
10/25/24
USD
175.00
USD
851
(38,465
)
Take-Two Interactive Software, Inc.
97
10/25/24
USD
155.00
USD
1,491
(34,920
)
Tesla, Inc.
58
10/25/24
USD
255.00
USD
1,517
(141,955
)
Uber Technologies, Inc.
271
10/25/24
USD
71.00
USD
2,037
(151,082
)
Advanced Micro Devices, Inc.
177
11/01/24
USD
175.00
USD
2,904
(97,792
)
Alphabet, Inc., Class A
6
11/01/24
USD
170.00
USD
100
(2,835
)
Amazon.com, Inc.
249
11/01/24
USD
190.00
USD
4,640
(167,452
)
ARM Holdings PLC, ADR
265
11/01/24
USD
165.00
USD
3,790
(100,700
)
Autodesk, Inc.
65
11/01/24
USD
275.00
USD
1,791
(48,100
)
Broadcom, Inc.
247
11/01/24
USD
185.00
USD
4,261
(83,980
)
Datadog, Inc., Class A
187
11/01/24
USD
118.00
USD
2,152
(73,397
)
Electronic Arts, Inc.
80
11/01/24
USD
145.00
USD
1,148
(31,200
)
Intuit, Inc.
33
11/01/24
USD
660.00
USD
2,049
(13,283
)
Meta Platforms, Inc., Class A
123
11/01/24
USD
535.00
USD
7,041
(656,820
)
Micron Technology, Inc.
46
11/01/24
USD
96.00
USD
477
(46,920
)
MongoDB, Inc., Class A
57
11/01/24
USD
285.00
USD
1,541
(45,030
)
NVIDIA Corp.
670
11/01/24
USD
130.00
USD
8,136
(229,475
)
Oracle Corp.
242
11/01/24
USD
175.00
USD
4,124
(62,315
)
Palo Alto Networks, Inc.
62
11/01/24
USD
360.00
USD
2,119
(35,340
)
ServiceNow, Inc.
29
11/01/24
USD
950.00
USD
2,594
(58,725
)
Spotify Technology SA
102
11/01/24
USD
380.00
USD
3,759
(103,020
)
Taiwan Semiconductor Manufacturing Co. Ltd., ADR
40
11/01/24
USD
200.00
USD
695
(6,280
)
Take-Two Interactive Software, Inc.
117
11/01/24
USD
160.00
USD
1,798
(31,298
)
Mastercard, Inc., Class A
80
11/08/24
USD
495.00
USD
3,950
(115,400
)
Meta Platforms, Inc., Class A
44
11/08/24
USD
630.00
USD
2,519
(53,350
)
NVIDIA Corp.
425
11/08/24
USD
130.00
USD
5,161
(187,000
)
Oracle Corp.
242
11/08/24
USD
175.00
USD
4,124
(84,700
)
Amazon.com, Inc.
105
11/15/24
USD
190.00
USD
1,956
(85,837
)
Arista Networks, Inc.
75
11/15/24
USD
390.00
USD
2,879
(172,875
)
Cadence Design Systems, Inc.
325
11/15/24
USD
295.00
USD
8,808
(198,250
)
Credo Technology Group Holding Ltd.
1,415
11/15/24
USD
30.00
USD
4,358
(382,050
)
Guidewire Software, Inc.
85
11/15/24
USD
173.00
USD
1,555
(113,975
)
Intuit, Inc.
32
11/15/24
USD
670.00
USD
1,987
(22,400
)
Lam Research Corp.
8
11/15/24
USD
820.00
USD
653
(44,800
)
Marvell Technology, Inc.
194
11/15/24
USD
75.00
USD
1,399
(67,900
)
MercadoLibre, Inc.
20
11/15/24
USD
2,110.00
USD
4,104
(182,900
)
Monolithic Power Systems, Inc.
70
11/15/24
USD
915.00
USD
6,472
(505,638
)
NVIDIA Corp.
417
11/15/24
USD
125.00
USD
5,064
(298,155
)
NVIDIA Corp.
725
11/15/24
USD
129.00
USD
8,804
(402,375
)
Tesla, Inc.
59
11/15/24
USD
255.00
USD
1,544
(169,182
)
Uber Technologies, Inc.
209
11/15/24
USD
77.50
USD
1,571
(79,420
)
Micron Technology, Inc.
166
12/20/24
USD
125.00
USD
1,722
(52,290
)
 
 
 
$ (13,328,347
)
OTC Options Written 
Description
Counterparty
Number of
Contracts
Expiration
Date
Exercise Price
Notional
Amount (000)
Value
Call 
 
 
 
 
 
Xero Ltd.
UBS AG
20,000
10/02/24
AUD
132.97
AUD
2,990
$ (228,174
)
Hitachi Ltd.
JPMorgan Chase Bank N.A.
98,700
10/03/24
JPY
3,708.36
JPY
376,166
(71,303
)
Nintendo Co. Ltd.
Bank of America N.A.
27,600
10/03/24
JPY
8,764.08
JPY
212,031
(2
)
ASM International NV
Morgan Stanley & Co. International PLC
5,600
10/08/24
EUR
596.35
EUR
3,319
(69,492
)
Nintendo Co. Ltd.
Citibank N.A.
12,100
10/22/24
JPY
8,122.80
JPY
92,956
(5,882
)
Consolidated Schedule of Investments
5
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
 
OTC Options Written (continued)
Description
Counterparty
Number of
Contracts
Expiration
Date
Exercise Price
Notional
Amount (000)
Value
Call (continued)
 
 
 
 
 
RELX PLC
BNP Paribas SA
136,500
10/29/24
GBP
36.92
GBP
4,821
$ (26,881
)
ASML Holding NV
Morgan Stanley & Co. International PLC
5,850
10/30/24
EUR
776.34
EUR
4,372
(169,539
)
NVIDIA Corp.
JPMorgan Chase Bank N.A.
26,100
10/30/24
USD
115.59
USD
3,170
(259,284
)
NVIDIA Corp.
Morgan Stanley & Co. International PLC
30,100
11/05/24
USD
124.07
USD
3,655
(197,869
)
NVIDIA Corp.
JPMorgan Chase Bank N.A.
30,100
11/07/24
USD
115.48
USD
3,655
(341,031
)
Nintendo Co. Ltd.
Citibank N.A.
53,700
11/08/24
JPY
7,990.06
JPY
412,539
(52,380
)
ASML Holding NV
Citibank N.A.
8,250
11/12/24
EUR
774.68
EUR
6,165
(308,814
)
Xero Ltd.
Bank of America N.A.
14,600
11/12/24
AUD
155.51
AUD
2,183
(37,916
)
ASM International NV
Morgan Stanley & Co. International PLC
5,000
11/14/24
EUR
608.82
EUR
2,963
(166,721
)
 
 
 
 
 
 
$ (1,935,288
)
Fair Value Hierarchy as of Period End
Various inputs are used in determining the fair value of financial instruments at the measurement date. 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 that the Trust has the ability to access for identical, unrestricted assets or liabilities;
• Level 2 – Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly or indirectly; and
• Level 3 – Inputs that are unobservable and significant to the  entire fair value measurement for the asset or liability (including the 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 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
$ —
$ —
$ 19,999,998
$ 19,999,998
Automobiles
21,186,536
—
—
21,186,536
Broadline Retail
55,973,505
—
—
55,973,505
Capital Markets
6,622,552
—
—
6,622,552
Communications Equipment
17,129,732
—
3,002,435
20,132,167
Diversified Consumer Services
—
—
10,279,192
10,279,192
Electrical Equipment
7,689,980
—
—
7,689,980
Electronic Equipment, Instruments & Components
7,256,834
—
—
7,256,834
Entertainment
30,862,859
7,675,616
—
38,538,475
Financial Services
16,640,072
—
—
16,640,072
Ground Transportation
8,698,417
—
—
8,698,417
Industrial Conglomerates
—
11,484,654
—
11,484,654
Interactive Media & Services
61,748,004
—
—
61,748,004
IT Services
9,202,714
—
22,287,870
31,490,584
Professional Services
5,928,919
14,332,371
—
20,261,290
Semiconductors & Semiconductor Equipment
359,220,376
40,186,398
—
399,406,774
Software
277,836,732
7,930,025
8,365,285
294,132,042
Specialty Retail
—
—
74,076
74,076
6
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
 
Fair Value Hierarchy as of Period End (continued)
 
Level 1
Level 2
Level 3
Total
Common Stocks (continued)
Technology Hardware, Storage & Peripherals
$ 110,052,424
$ —
$ —
$ 110,052,424
Convertible Notes
—
—
1
1
Preferred Securities
Preferred Stocks
—
—
179,719,921
179,719,921
Warrants
—
—
—
—
Short-Term Securities 
Money Market Funds
6,491,485
—
—
6,491,485
 
$1,002,541,141
$81,609,064
$243,728,778
$1,327,878,983
Derivative Financial Instruments(a)
Liabilities 
Equity Contracts
$ (12,257,624
)
$ (3,006,011
)
$ —
$ (15,263,635
)
 
(a)
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 and derivative financial instruments 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
Convertible
Notes
Preferred
Stocks
Warrants
Total
Assets
Opening balance, as of December 31, 2023
$ 46,135,347
$ 1
$ 212,114,583
$ —
(a)
$ 258,249,931
Transfers into Level 3
—
—
—
—
—
Transfers out of Level 3
—
—
—
—
—
Other(b)
(4,480,331
)
—
4,480,331
—
—
Accrued discounts/premiums
—
—
—
—
—
Net realized gain (loss)
—
—
1,155,081
—
1,155,081
Net change in unrealized appreciation (depreciation)(c)
(646,154
)
—
(34,599,093
)
—
(35,245,247
)
Purchases
22,999,994
—
10,215,949
—
33,215,943
Sales
—
—
(13,646,930
)
—
(13,646,930
)
Closing balance, as of September 30, 2024
$ 64,008,856
$ 1
$ 179,719,921
$ —
(a)
$ 243,728,778
Net change in unrealized appreciation (depreciation) on investments still held at September 30, 2024(c)
$ (646,154
)
$ —
$ (31,860,003
)
$ —
$ (32,506,157
)
 
(a)
Rounds to less than $1.
(b)
Certain Level 3 investments were re-classified between Common Stocks and Preferred Stocks.
(c)
Any difference between net change in unrealized appreciation (depreciation) and net change in unrealized appreciation (depreciation) on investments still held at September 30, 2024 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 Valuation Committee (the “Valuation Committee”) to determine the value of certain of the Trust’s Level 3 financial instruments as of period end. The table does not include Level 3 financial instruments with values based upon unadjusted third-party pricing information in the amount of $1. A significant change in third party information could result in a significantly lower or higher value of such Level 3 financial instruments. 
 
Value
Valuation
Approach
Unobservable
Inputs
Range of
Unobservable
Inputs
Utilized(a)
Weighted
Average of
Unobservable
Inputs Based
on Fair Value
Assets
 
 
 
 
Common Stocks
$64,008,856
Market
Revenue Multiple
2.10x - 20.00x
10.36x
 
 
Volatility
70% - 80%
80
 
 
Time to Exit
3.0 - 3.0 years
3.0 years
 
 
 
 
 
Preferred Stocks
179,719,921
Market
Revenue Multiple
1.25x - 21.00x
11.99x
 
 
Volatility
50% - 90%
67%
 
 
Time to Exit
0.5 - 5.0 years
3.3 years
 
 
Market Adjustment Multiple
1.05x -1.30x
1.22x
 
 
Terminal Growth Rate
5%
—
Consolidated Schedule of Investments
7
Consolidated Schedule of Investments (unaudited)(continued)
September 30, 2024
BlackRock Science and Technology Trust (BST)
 
 
Value
Valuation
Approach
Unobservable
Inputs
Range of
Unobservable
Inputs
Utilized(a)
Weighted
Average of
Unobservable
Inputs Based
on Fair Value
 
 
Gross Profit Multiple
8.00x
—
 
Income
Discount
12%
—
 
$243,728,777
 
 
 
 
 
(a)
A significant change in unobservable input would have resulted in a correlated (inverse) significant change to value.
 
Currency Abbreviation 
AUD
Australian Dollar
EUR
Euro
GBP
British Pound
JPY
Japanese Yen
USD
United States Dollar
 
Portfolio Abbreviation 
ADR
 American Depositary Receipt
S&P
 Standard & Poor’s
8
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