Vault-13

BLACKROCK SCIENCE & TECHNOLO BST

SHS · Closed-End Fund · CUSIP 09258G104

134 institutional holders -2 vs Q3 2025
7,355,0647.4m shares reported held*
$298.3mreported value*
8 new 58 added 26 reduced 16 sold out net bought ≈ $3.1m (+74.1k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $40.55.

Trends to Q4 2025

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 88Q4 22: 97Q1 23: 96Q2 23: 94Q3 23: 102Q4 23: 109Q1 24: 107Q2 24: 112Q3 24: 119Q4 24: 122Q1 25: 122Q2 25: 129Q3 25: 136Q4 25: 134134Q3 22Q2 23Q1 24Q4 24Q4 25
Numbers
QuarterHolders
Q3 202288
Q4 202297
Q1 202396
Q2 202394
Q3 2023102
Q4 2023109
Q1 2024107
Q2 2024112
Q3 2024119
Q4 2024122
Q1 2025122
Q2 2025129
Q3 2025136
Q4 2025134

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q1 24: 49 bought or addedQ1 24: 48 cut or sold outQ2 24: 46 bought or addedQ2 24: 48 cut or sold outQ2 24Q3 24: 61 bought or addedQ3 24: 42 cut or sold outQ4 24: 52 bought or addedQ4 24: 52 cut or sold outQ4 24Q1 25: 57 bought or addedQ1 25: 49 cut or sold outQ2 25: 76 bought or addedQ2 25: 34 cut or sold outQ2 25Q3 25: 72 bought or addedQ3 25: 43 cut or sold outQ4 25: 66 bought or addedQ4 25: 42 cut or sold outQ4 25
Numbers
QuarterBought or addedCut or sold out
Q1 20244948
Q2 20244648
Q3 20246142
Q4 20245252
Q1 20255749
Q2 20257634
Q3 20257243
Q4 20256642

Biggest buyers

Karpus Management, Inc. Added +182,447+182.4k
1607 Capital Partners, LLC Added +52,097+52.1k
TWO SIGMA INVESTMENTS, LP New +37,000+37.0k
READYSTATE ASSET MANAGEMENT LP New +31,452+31.5k
BANK OF AMERICA CORP /DE/ Added +29,715+29.7k
MORGAN STANLEY Added +28,310+28.3k
LPL Financial LLC Added +26,264+26.3k
RAYMOND JAMES FINANCIAL INC Added +22,654+22.7k
Compound Planning, Inc. Added +15,401+15.4k
PNC Financial Services Group, Inc. Added +14,430+14.4k

Biggest sellers

Cornerstone Advisors, LLC Sold out -120,056-120.1k
NFSG Corp Sold out -66,605-66.6k
WEDBUSH SECURITIES INC Reduced -60,376-60.4k
WELLS FARGO & COMPANY/MN Reduced -50,659-50.7k
Invesco Ltd. Reduced -20,673-20.7k
Allspring Global Investments Holdings, LLC Sold out -13,680-13.7k
COMMONWEALTH EQUITY SERVICES, LLC Reduced -12,282-12.3k
Sanctuary Advisors, LLC Reduced -11,310-11.3k
Walleye Capital LLC Sold out -10,944-10.9k
UBS Group AG Reduced -10,095-10.1k

Insider purchases and sales in Q4 2025

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 0 buyingQ2 24: 0 sellingQ2 24Q3 24: 0 buyingQ3 24: 0 sellingQ4 24: 1 buyingQ4 24: 0 sellingQ4 24Q1 25: 0 buyingQ1 25: 0 sellingQ2 25: 0 buyingQ2 25: 0 sellingQ2 25Q3 25: 0 buyingQ3 25: 0 sellingQ4 25: 0 buyingQ4 25: 0 sellingQ4 25
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q1 20240—0——
Q2 20240—0——
Q3 20240—0——
Q4 20241$1.1k0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——

None reported in Q4 2025.

Holders, Q4 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,293,8921.3m $52.5m $52.5m 0.00% Added +28.3k +28,310
2 RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio ST. PETERSBURG, FL 759,460759.5k $30.8m $30.8m 0.01% Added +22.7k +22,654
3 Karpus Management, Inc. 0.68% of their portfolio Pittsford, NY 543,547543.5k $22.0m $22.0m 0.68% Added +182.4k +182,447
4 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 505,578505.6k $20.5m $20.5m 0.00% Reduced -20.7k -20,673
5 Z3 Capital Partners, LLC 3.69% of their portfolio RICHMOND, VA 379,290379.3k $15.4m $15.4m 3.69% First filing
6 1607 Capital Partners, LLC 1.04% of their portfolio Richmond, VA 374,713374.7k $15.2m $15.2m 1.04% Added +52.1k +52,097
7 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 371,107371.1k $15.0m $15.0m 0.00% Reduced -3.8k -3,763
8 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 300,756300.8k $12.2m $12.2m 0.00% Added +26.3k +26,264
9 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 277,839277.8k $11.3m $11.3m 0.00% Reduced -4.6k -4,637
10 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 227,209227.2k $9.2m $9.2m 0.00% Added +29.7k +29,715
11 Steward Partners Investment Advisory, LLC 0.04% of their portfolio STAMFORD, CT 173,868173.9k $7.0m $7.0m 0.04% Added +403 +403
12 Janney Montgomery Scott LLC 0.01% of their portfolio PHILADELPHIA, PA 155,488155.5k $6.3m $6.3m 0.01% Added +5.9k +5,920
13 OSAIC HOLDINGS, INC. 0.01% of their portfolio SCOTTSDALE, AZ 151,911151.9k $6.2m $6.2m 0.01% Reduced -3.1k -3,138
14 WEDBUSH SECURITIES INC 0.14% of their portfolio PASADENA, CA 117,287117.3k $4.8m $4.8m 0.14% Reduced -60.4k -60,376
15 Alchemi Wealth, LLC 2.57% of their portfolio ESSEX, CT 115,773115.8k $4.7m $4.7m 2.57% First filing
16 UBS Group AG 0.00% of their portfolio ZURICH, V8 92,34792.3k $3.7m $3.7m 0.00% Reduced -10.1k -10,095
17 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 79,63079.6k $3.2m $3.2m 0.00% Added +3.8k +3,828
18 NWF Advisory Services Inc. 0.33% of their portfolio Los Angeles, CA 72,55572.6k $2.9m $2.9m 0.33% Reduced -9.7k -9,710
19 PMG Family Office LLC 2.94% of their portfolio PLANO, TX 62,73662.7k $2.5m $2.5m 2.94% Added +561 +561
20 Wealthspire Retirement, LLC 0.15% of their portfolio ALISO VIEJO, CA 60,87460.9k $2.5m $2.5m 0.15% Added +5.3k +5,257
21 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 60,82860.8k $2.5m $2.5m 0.00% Reduced -1.8k -1,842
22 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 56,54856.5k $2.3m $2.3m 0.00% Added +1.4k +1,355
23 OPPENHEIMER & CO INC 0.03% of their portfolio NEW YORK, NY 44,81844.8k $1.8m $1.8m 0.03% Reduced -1.2k -1,239
24 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 42,65742.7k $1.7m $1.7m 0.00% Reduced -2.0k -1,982
25 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 38,57338.6k $1.6m $1.6m 0.00% Added +1.2k +1,235
26 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 37,00037.0k $1.5m $1.5m 0.00% New
27 David J Yvars Group 0.68% of their portfolio UNIVERSITY PARK, FL 31,64031.6k $1.3m $1.3m 0.68% Added +897 +897
28 READYSTATE ASSET MANAGEMENT LP 0.06% of their portfolio CHICAGO, IL 31,45231.5k $1.3m $1.3m 0.06% New
29 J.W. COLE ADVISORS, INC. 0.03% of their portfolio TAMPA, FL 31,42831.4k $1.3m $1.3m 0.03% Reduced -133 -133
30 TRUIST FINANCIAL CORP 0.00% of their portfolio CHARLOTTE, NC 29,15429.2k $1.2m $1.2m 0.00% Reduced -5.4k -5,410
31 Compound Planning, Inc. 0.03% of their portfolio NEW YORK, NY 27,06627.1k $1.1m $1.1m 0.03% Added +15.4k +15,401
32 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 26,28726.3k $1.1m $1.1m 0.00% Reduced -12.3k -12,282
33 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 25,77825.8k $1.0m $1.0m 0.00% Reduced -2.3k -2,296
34 Summit Financial, LLC 0.01% of their portfolio PARSIPPANY, NJ 25,18325.2k $1.0m $1.0m 0.01% Added +3.5k +3,496
35 Kingsview Wealth Management, LLC 0.01% of their portfolio GRANTS PASS, OR 24,75324.8k $1.0m $1.0m 0.01% Added +1.5k +1,495
36 Apollon Wealth Management, LLC 0.02% of their portfolio MOUNT PLEASANT, SC 23,89023.9k $968.5k $968.5k 0.02% Added +4.2k +4,227
37 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 23,06123.1k $934.9k $934.9k 0.00% Added +10.6k +10,642
38 Mission Hills Financial Advisory, LLC 0.49% of their portfolio SAN DIEGO, CA 22,66522.7k $918.8k $918.8k 0.49% Added +2.6k +2,571
39 Kestra Advisory Services, LLC 0.00% of their portfolio AUSTIN, TX 21,21021.2k $859.9k $859.9k 0.00% Added +619 +619
40 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 21,18421.2k $858.8k $858.8k 0.00% Added +14.4k +14,430
41 D.A. DAVIDSON & CO. 0.00% of their portfolio GREAT FALLS, MT 19,45219.5k $788.6k $788.6k 0.00% Added +4.2k +4,209
42 Stolper Co 0.22% of their portfolio TULSA, OK 18,52718.5k $751.0k $751.0k 0.22% Added +126 +126
43 Anchor Capital Management Group Inc 0.38% of their portfolio ALISO VIEJO, CA 18,00018.0k $744.5k $744.5k 0.38% Unchanged
44 Focus Financial Network, Inc. 0.02% of their portfolio MINNEAPOLIS, MN 17,46717.5k $708.4k $708.4k 0.02% Added +1.7k +1,675
45 Merit Financial Group, LLC 0.01% of their portfolio ALPHARETTA, GA 17,06217.1k $691.7k $691.7k 0.01% Added +4 +4
46 WEALTH EFFECTS LLC 0.21% of their portfolio BOSTON, MA 16,92916.9k $686.3k $686.3k 0.21% Added +26 +26
47 STEPHENS INC /AR/ 0.01% of their portfolio LITTLE ROCK, AR 16,48516.5k $668.3k $668.3k 0.01% Unchanged
48 Prospera Financial Services Inc 0.01% of their portfolio Dallas, TX 16,43016.4k $666.1k $666.1k 0.01% Added +561 +561
49 Sunbelt Securities, Inc. 0.04% of their portfolio HOUSTON, TX 16,07316.1k $651.6k $651.6k 0.04% Added +3.5k +3,453
50 SMITH, MOORE & CO. 0.05% of their portfolio CLAYTON, MO 15,84315.8k $642.3k $642.3k 0.05% Added +600 +600
51 LANARK FINANCIAL, INC. 0.05% of their portfolio BIRMINGHAM, AL 15,01515.0k $608.7k $608.7k 0.05% Reduced -680 -680
52 Next Level Private LLC 0.16% of their portfolio HARRISON, NY 14,94314.9k $605.8k $605.8k 0.16% Added +5.3k +5,309
53 Hilltop Holdings Inc. 0.04% of their portfolio DALLAS, TX 14,87014.9k $602.8k $602.8k 0.04% Reduced -97 -97
54 Future Financial Wealth Managment LLC 0.38% of their portfolio CINCINNATI, OH 14,00014.0k $560.0k $560.0k 0.38% Unchanged
55 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.04% of their portfolio ORLANDO, FL 13,78813.8k $559.0k $559.0k 0.04% Added +136 +136
56 &PARTNERS 0.00% of their portfolio NASHVILLE, TN 13,16613.2k $533.8k $533.8k 0.00% Added +2.8k +2,815
57 Abel Hall, LLC 0.12% of their portfolio BATON ROUGE, LA 13,00013.0k $527.0k $527.0k 0.12% Unchanged
58 Sanctuary Advisors, LLC 0.00% of their portfolio INDIANAPOLIS, IN 12,50012.5k $506.7k $506.7k 0.00% Reduced -11.3k -11,310
59 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 12,46012.5k $505.1k $505.1k 0.00% New
60 Mutual Advisors, LLC 0.01% of their portfolio OMAHA, NE 12,09512.1k $490.3k $490.3k 0.01% Reduced -2.2k -2,200
61 Dakota Wealth Management 0.01% of their portfolio PALM BEACH GARDENS, FL 10,84510.8k $439.7k $439.7k 0.01% Added +4.8k +4,815
62 Advisory Advocates, LLC 0.43% of their portfolio GRAND RAPIDS, MI 10,77010.8k $436.6k $436.6k 0.43% First filing
63 SFG Wealth Management, LLC. 0.16% of their portfolio TOWSON, MD 10,27610.3k $416.6k $416.6k 0.16% Unchanged
64 B. Riley Wealth Advisors, Inc. 0.02% of their portfolio MEMPHIS, TN 10,17910.2k $412.6k $412.6k 0.02% Added +151 +151
65 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 10,01810.0k $406.2k $406.2k 0.00% Added +9 +9
66 GREAT VALLEY ADVISOR GROUP, INC. 0.01% of their portfolio WILMINGTON, DE 9,6929.7k $392.9k $392.9k 0.01% Reduced -213 -213
67 WALLED LAKE PLANNING & WEALTH MANAGEMENT, LLC 0.12% of their portfolio HIGHLAND PARK, IL 9,1779.2k $372.0k $372.0k 0.12% Added +424 +424
68 Aurora Private Wealth, Inc. 0.24% of their portfolio ROCKAWAY, NJ 9,1539.2k $371.0k $371.0k 0.24% First filing
69 Faithward Advisors, LLC 0.05% of their portfolio LANCASTER, PA 8,7458.7k $354.5k $354.5k 0.05% Added +145 +145
70 Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors 0.04% of their portfolio CONCORD, MA 8,6778.7k $351.8k $351.8k 0.04% Added +119 +119
71 Mirador Capital Partners LP 0.05% of their portfolio PLEASANTON, CA 8,2788.3k $335.6k $335.6k 0.05% Added +122 +122
72 Harbour Wealth Management Group, Inc. 0.25% of their portfolio DANIEL ISLAND, SC 8,0338.0k $325.7k $325.7k 0.25% First filing
73 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 7,8177.8k $316.9k $316.9k 0.00% Reduced -50.7k -50,659
74 Arkadios Wealth Advisors 0.01% of their portfolio ATLANTA, GA 7,7797.8k $315.3k $315.3k 0.01% Added +349 +349
75 Quarry LP 0.05% of their portfolio NEW YORK, NY 7,7517.8k $314.2k $314.2k 0.05% New
76 Private Wealth Asset Management, LLC 0.03% of their portfolio OMAHA, NE 7,2007.2k $291.9k $291.9k 0.03% New
77 Claro Advisors Inc. 0.04% of their portfolio BOSTON, MA 7,0857.1k $287.2k $287.2k 0.04% Added +110 +110
78 Keystone Financial Group 0.02% of their portfolio LEXINGTON, KY 6,8846.9k $279.1k $279.1k 0.02% Unchanged
79 Symphony Financial Services, Inc. 0.14% of their portfolio AKRON, OH 6,8636.9k $278.2k $278.2k 0.14% Added +360 +360
80 VISTA INVESTMENT PARTNERS II, LLC 0.12% of their portfolio RICHMOND, IN 6,7436.7k $273.4k $273.4k 0.12% Reduced -19 -19
81 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 6,6766.7k $270.6k $270.6k 0.00% Added +627 +627
82 Focus Partners Wealth 0.00% of their portfolio ST LOUIS, MO 6,3176.3k $256.1k $256.1k 0.00% Unchanged
83 Perigon Wealth Management, LLC 0.00% of their portfolio SAN FRANCISCO, CA 6,2876.3k $254.9k $254.9k 0.00% Reduced -557 -557
84 Herold Advisors, Inc. 0.06% of their portfolio New York, NY 6,2736.3k $254.3k $254.3k 0.06% Added +41 +41
85 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 6,1476.1k $249.2k $249.2k 0.00% Reduced -480 -480
86 DAYMARK WEALTH PARTNERS, LLC 0.01% of their portfolio CINCINNATI, OH 5,9756.0k $242.2k $242.2k 0.01% Unchanged
87 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 5,6445.6k $228.8k $228.8k 0.00% Added +407 +407
88 LEVEL FOUR ADVISORY SERVICES, LLC 0.01% of their portfolio DALLAS, TX 5,6155.6k $227.6k $227.6k 0.01% Added +47 +47
89 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 5,4575.5k $221.2k $221.2k 0.00% Reduced -2.7k -2,668
90 BROWN ADVISORY INC 0.00% of their portfolio BALTIMORE, MD 5,1365.1k $208.2k $208.2k 0.00% Unchanged
91 CASCADE INVESTMENT GROUP, INC. 0.14% of their portfolio Colorado Springs, CO 5,0755.1k $205.7k $205.7k 0.14% Added +150 +150
92 MOSAIC FINANCIAL GROUP, LLC 0.14% of their portfolio CHICAGO, IL 5,0045.0k $203.0k $203.0k 0.14% Unchanged
93 Empirical Asset Management, LLC 0.06% of their portfolio WELLESLEY, MA 5,0005.0k $202.7k $202.7k 0.06% Unchanged
94 Smartleaf Asset Management LLC 0.01% of their portfolio BOSTON, MA 4,2544.3k $171.1k $171.1k 0.01% Added +380 +380
95 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 4,2194.2k $171.0k $171.0k 0.00% Reduced -4.2k -4,209
96 MPWM ADVISORY SOLUTIONS, LLC 0.08% of their portfolio ALPHARETTA, GA 3,6353.6k $147.3k $147.3k 0.08% New
97 CWM, LLC 0.00% of their portfolio OMAHA, NE 3,3223.3k $135.0k $135.0k 0.00% Added +124 +124
98 HARBOR INVESTMENT ADVISORY, LLC 0.01% of their portfolio LUTHERVILLE, MD 3,1633.2k $128.2k $128.2k 0.01% Unchanged
99 COMERICA BANK 0.00% of their portfolio DALLAS, TX 2,3302.3k $94.5k $94.5k 0.00% Unchanged
100 AdvisorNet Financial, Inc 0.00% of their portfolio MINNETONKA, MN 2,1662.2k $87.8k $87.8k 0.00% Added +141 +141