Vault-13

BLACKROCK SCIENCE & TECHNOLO BST

SHS · Closed-End Fund · CUSIP 09258G104

136 institutional holders +14 vs Q1 2026
7,649,7337.6m shares reported held*
$387.9mreported value*
28 new 54 added 29 reduced 15 sold out net bought ≈ $22.6m (+404.8k 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 ≈ $50.71.

Trends to Q2 2026

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: 134Q1 26: 122Q2 26: 136136Q3 22Q3 23Q3 24Q3 25Q2 26
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
Q1 2026122
Q2 2026136

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q3 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 25Q1 26: 60 bought or addedQ1 26: 53 cut or sold outQ2 26: 82 bought or addedQ2 26: 44 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20246142
Q4 20245252
Q1 20255749
Q2 20257634
Q3 20257243
Q4 20256642
Q1 20266053
Q2 20268244

Biggest buyers

MORGAN STANLEY Added +145,599+145.6k
1607 Capital Partners, LLC Added +93,790+93.8k
Karpus Management, Inc. Added +76,573+76.6k
Invesco Ltd. Added +74,662+74.7k
Cambridge Investment Research Advisors, Inc. Added +41,975+42.0k
Rockefeller Capital Management L.P. Added +29,882+29.9k
J.W. COLE ADVISORS, INC. New +28,892+28.9k
JANE STREET GROUP, LLC Added +25,706+25.7k
MGO ONE SEVEN LLC New +20,091+20.1k
HARBOUR INVESTMENTS, INC. Added +17,581+17.6k

Biggest sellers

AMERIPRISE FINANCIAL INC Reduced -121,581-121.6k
BANK OF AMERICA CORP /DE/ Reduced -81,554-81.6k
Stolper Co Reduced -42,150-42.1k
WOLVERINE ASSET MANAGEMENT LLC Sold out -29,095-29.1k
UBS Group AG Reduced -17,419-17.4k
David J Yvars Group Reduced -8,839-8.8k
ROYAL BANK OF CANADA Reduced -8,076-8.1k
Private Wealth Asset Management, LLC Sold out -7,559-7.6k
Claro Advisors Inc. Sold out -7,054-7.1k
Keystone Financial Group Sold out -6,884-6.9k

Insider purchases and sales since 1 Apr 2026

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
101Q4 24: 1 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20241$1.1k0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—0——
Q3 20260—0——

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,430,3971.4m $72.5m $72.5m 0.00% Added +145.6k +145,599
2 RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio ST. PETERSBURG, FL 787,619787.6k $39.9m $39.9m 0.01% Added +4.3k +4,260
3 Karpus Management, Inc. 0.93% of their portfolio Pittsford, NY 639,482639.5k $32.4m $32.4m 0.93% Added +76.6k +76,573
4 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 483,275483.3k $24.5m $24.5m 0.00% Added +74.7k +74,662
5 1607 Capital Partners, LLC 2.07% of their portfolio Richmond, VA 468,610468.6k $23.8m $23.8m 2.07% Added +93.8k +93,790
6 Z3 Capital Partners, LLC 4.17% of their portfolio RICHMOND, VA 391,338391.3k $19.8m $19.8m 4.17% Added +3.1k +3,131
7 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 278,628278.6k $14.1m $14.1m 0.00% Added +4.0k +3,972
8 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 266,632266.6k $13.5m $13.5m 0.00% Reduced -121.6k -121,581
9 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 265,290265.3k $13.5m $13.5m 0.00% Reduced -8.1k -8,076
10 Steward Partners Investment Advisory, LLC 0.05% of their portfolio STAMFORD, CT 211,966212.0k $10.7m $10.7m 0.05% Added +4.3k +4,264
11 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 198,501198.5k $10.1m $10.1m 0.00% Reduced -81.6k -81,554
12 Janney Montgomery Scott LLC 0.02% of their portfolio PHILADELPHIA, PA 154,103154.1k $7.8m $7.8m 0.02% Added +2.6k +2,567
13 OSAIC HOLDINGS, INC. 0.01% of their portfolio SCOTTSDALE, AZ 145,380145.4k $7.4m $7.4m 0.01% Added +5.2k +5,244
14 Alchemi Wealth, LLC 2.72% of their portfolio ESSEX, CT 114,575114.6k $5.8m $5.8m 2.72% Reduced -2.2k -2,204
15 WEDBUSH SECURITIES INC 0.12% of their portfolio PASADENA, CA 92,30892.3k $4.7m $4.7m 0.12% Added +4.5k +4,452
16 Cambridge Investment Research Advisors, Inc. 0.01% of their portfolio FAIRFIELD, IA 87,15487.2k $4.4m $4.4m 0.01% Added +42.0k +41,975
17 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 83,34083.3k $4.2m $4.2m 0.00% Reduced -768 -768
18 UBS Group AG 0.00% of their portfolio ZURICH, V8 82,90682.9k $4.2m $4.2m 0.00% Reduced -17.4k -17,419
19 NWF Advisory Services Inc. 0.33% of their portfolio Los Angeles, CA 70,00570.0k $3.5m $3.5m 0.33% Reduced -2.0k -2,000
20 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 68,19168.2k $3.5m $3.5m 0.00% Added +10.3k +10,326
21 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 67,60167.6k $3.4m $3.4m 0.00% Added +7.4k +7,402
22 Wealthspire Retirement, LLC 0.19% of their portfolio ALISO VIEJO, CA 67,44267.4k $3.4m $3.4m 0.19% Added +2.4k +2,412
23 PMG Family Office LLC 3.02% of their portfolio PLANO, TX 64,58864.6k $3.3m $3.3m 3.02% Added +270 +270
24 OPPENHEIMER & CO INC 0.02% of their portfolio NEW YORK, NY 42,89142.9k $2.2m $2.2m 0.02% Reduced -2.1k -2,134
25 Rockefeller Capital Management L.P. 0.00% of their portfolio NEW YORK, NY 39,82439.8k $2.0m $2.0m 0.00% Added +29.9k +29,882
26 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 38,98339.0k $2.0m $2.0m 0.00% Reduced -537 -537
27 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 35,91635.9k $1.8m $1.8m 0.00% Added +25.7k +25,706
28 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 34,70434.7k $1.8m $1.8m 0.00% Added +5.5k +5,513
29 Mission Hills Financial Advisory, LLC 0.77% of their portfolio SAN DIEGO, CA 34,52234.5k $1.8m $1.8m 0.77% Added +10.6k +10,611
30 TRUIST FINANCIAL CORP 0.00% of their portfolio CHARLOTTE, NC 32,55932.6k $1.7m $1.7m 0.00% Reduced -668 -668
31 Summit Financial, LLC 0.02% of their portfolio PARSIPPANY, NJ 30,93830.9k $1.6m $1.6m 0.02% Added +1.1k +1,143
32 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 30,52530.5k $1.5m $1.5m 0.00% Added +309 +309
33 J.W. COLE ADVISORS, INC. 0.03% of their portfolio TAMPA, FL 28,89228.9k $1.5m $1.5m 0.03% New
34 Kestra Advisory Services, LLC 0.00% of their portfolio AUSTIN, TX 24,18124.2k $1.2m $1.2m 0.00% Reduced -5.6k -5,635
35 D.A. DAVIDSON & CO. 0.01% of their portfolio GREAT FALLS, MT 23,09923.1k $1.2m $1.2m 0.01% Added +2.3k +2,318
36 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 22,73922.7k $1.2m $1.2m 0.00% Added +1.6k +1,555
37 David J Yvars Group 0.55% of their portfolio UNIVERSITY PARK, FL 22,30322.3k $1.1m $1.1m 0.55% Reduced -8.8k -8,839
38 Kingsview Wealth Management, LLC 0.01% of their portfolio GRANTS PASS, OR 20,99421.0k $1.1m $1.1m 0.01% Reduced -3.0k -2,963
39 MGO ONE SEVEN LLC 0.02% of their portfolio Beachwood, OH 20,09120.1k $1.0m $1.0m 0.02% New
40 Stolper Co 0.25% of their portfolio TULSA, OK 19,37819.4k $983.0k $983.0k 0.25% Reduced -42.1k -42,150
41 Focus Financial Network, Inc. 0.03% of their portfolio MINNEAPOLIS, MN 18,48318.5k $937.3k $937.3k 0.03% Added +1.0k +1,048
42 HARBOUR INVESTMENTS, INC. 0.01% of their portfolio MADISON, WI 18,44718.4k $935.4k $935.4k 0.01% Added +17.6k +17,581
43 Anchor Capital Management Group Inc 0.63% of their portfolio ALISO VIEJO, CA 18,00018.0k $912.8k $912.8k 0.63% Unchanged
44 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 17,98718.0k $912.1k $912.1k 0.01% Added +11.2k +11,157
45 Merit Financial Group, LLC 0.01% of their portfolio ALPHARETTA, GA 17,06617.1k $865.4k $865.4k 0.01% Added +2 +2
46 LANARK FINANCIAL, INC. 0.06% of their portfolio BIRMINGHAM, AL 16,89116.9k $856.5k $856.5k 0.06% Added +1.9k +1,876
47 Compound Planning, Inc. 0.02% of their portfolio NEW YORK, NY 16,86316.9k $855.1k $855.1k 0.02% Added +5.4k +5,421
48 Prospera Financial Services Inc 0.01% of their portfolio Dallas, TX 16,77916.8k $850.9k $850.9k 0.01% Added +67 +67
49 WEALTH EFFECTS LLC 0.23% of their portfolio BOSTON, MA 16,75516.8k $849.7k $849.7k 0.23% Added +16 +16
50 &PARTNERS 0.00% of their portfolio NASHVILLE, TN 16,12716.1k $817.9k $817.9k 0.00% Added +3.4k +3,424
51 SMITH, MOORE & CO. 0.05% of their portfolio CLAYTON, MO 15,49315.5k $785.6k $785.6k 0.05% Reduced -350 -350
52 Next Level Private LLC 0.15% of their portfolio HARRISON, NY 15,17415.2k $769.5k $769.5k 0.15% Added +106 +106
53 RMR Wealth Builders 0.04% of their portfolio Montclair, NJ 14,15414.2k $717.7k $717.7k 0.04% New
54 Future Financial Wealth Managment LLC 0.40% of their portfolio CINCINNATI, OH 14,00014.0k $640.4k $640.4k 0.40% Unchanged
55 FORTEM FINANCIAL GROUP, LLC 0.14% of their portfolio PALM DESERT, CA 13,79113.8k $699.3k $699.3k 0.14% Added +428 +428
56 Abel Hall, LLC 0.11% of their portfolio BATON ROUGE, LA 13,00013.0k $659.2k $659.2k 0.11% Unchanged
57 Hilltop Holdings Inc. 0.05% of their portfolio DALLAS, TX 12,93212.9k $655.7k $655.7k 0.05% Reduced -2.1k -2,067
58 Dakota Wealth Management 0.01% of their portfolio PALM BEACH GARDENS, FL 12,85712.9k $652.0k $652.0k 0.01% Added +366 +366
59 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.04% of their portfolio ORLANDO, FL 12,68912.7k $633.9k $633.9k 0.04% Reduced -1.1k -1,122
60 Sanctuary Advisors, LLC 0.00% of their portfolio INDIANAPOLIS, IN 12,44312.4k $631.0k $631.0k 0.00% Added +1 +1
61 Focus Partners Wealth 0.00% of their portfolio ST LOUIS, MO 11,41211.4k $578.7k $578.7k 0.00% Added +4.3k +4,286
62 Mutual Advisors, LLC 0.01% of their portfolio OMAHA, NE 11,11011.1k $563.4k $563.4k 0.01% Reduced -185 -185
63 Advisory Advocates, LLC 0.48% of their portfolio GRAND RAPIDS, MI 11,06011.1k $560.9k $560.9k 0.48% Added +190 +190
64 B. Riley Wealth Advisors, Inc. 0.03% of their portfolio MEMPHIS, TN 10,26210.3k $503.5k $503.5k 0.03% Added +101 +101
65 Aurora Private Wealth, Inc. 0.32% of their portfolio ROCKAWAY, NJ 10,09310.1k $512.0k $512.0k 0.32% Added +940 +940
66 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 10,02210.0k $508.2k $508.2k 0.00% New
67 Arkadios Wealth Advisors 0.01% of their portfolio ATLANTA, GA 9,5489.5k $484.2k $484.2k 0.01% Added +148 +148
68 WALLED LAKE PLANNING & WEALTH MANAGEMENT, LLC 0.12% of their portfolio HIGHLAND PARK, IL 9,5089.5k $482.2k $482.2k 0.12% Added +152 +152
69 Bay Colony Advisory Group, Inc d/b/a Bay Colony Advisors 0.05% of their portfolio CONCORD, MA 9,4179.4k $477.5k $477.5k 0.05% Added +372 +372
70 STEPHENS INC /AR/ 0.01% of their portfolio LITTLE ROCK, AR 9,3359.3k $473.4k $473.4k 0.01% Unchanged
71 MPWM ADVISORY SOLUTIONS, LLC 0.20% of their portfolio ALPHARETTA, GA 8,7368.7k $443.0k $443.0k 0.20% Reduced -368 -368
72 GREAT VALLEY ADVISOR GROUP, INC. 0.01% of their portfolio WILMINGTON, DE 8,6708.7k $439.6k $439.6k 0.01% Added +7 +7
73 Faithward Advisors, LLC 0.05% of their portfolio LANCASTER, PA 8,6508.7k $438.7k $438.7k 0.05% Reduced -2.0k -2,022
74 MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio DENVER, CO 8,5738.6k $434.7k $434.7k 0.00% Added +332 +332
75 Harbour Wealth Management Group, Inc. 0.28% of their portfolio DANIEL ISLAND, SC 8,2318.2k $417.4k $417.4k 0.28% Added +159 +159
76 Mirador Capital Partners LP 0.05% of their portfolio PLEASANTON, CA 7,7317.7k $392.0k $392.0k 0.05% Added +43 +43
77 Calamos Advisors LLC 0.00% of their portfolio NAPERVILLE, IL 7,3147.3k $370.9k $370.9k 0.00% New
78 Private Advisor Group, LLC 0.00% of their portfolio MORRISTOWN, NJ 7,1807.2k $364.1k $364.1k 0.00% New
79 READYSTATE ASSET MANAGEMENT LP 0.01% of their portfolio CHICAGO, IL 7,1567.2k $362.9k $362.9k 0.01% New
80 Mariner, LLC 0.00% of their portfolio Overland Park, KS 6,9316.9k $351.5k $351.5k 0.00% New
81 PREVAIL INNOVATIVE WEALTH ADVISORS, LLC 0.05% of their portfolio LEAWOOD, KS 6,9146.9k $350.6k $350.6k 0.05% New
82 Noble Wealth Management PBC 0.16% of their portfolio GREENWOOD VILLAGE, CO 6,8006.8k $344.8k $344.8k 0.16% New
83 VISTA INVESTMENT PARTNERS II, LLC 0.13% of their portfolio RICHMOND, IN 6,6866.7k $339.1k $339.1k 0.13% Reduced -57 -57
84 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 6,6766.7k $338.5k $338.5k 0.00% Unchanged
85 Symphony Financial Services, Inc. 0.15% of their portfolio AKRON, OH 6,5836.6k $333.8k $333.8k 0.15% Reduced -411 -411
86 Herold Advisors, Inc. 0.06% of their portfolio New York, NY 6,1036.1k $307.0k $307.0k 0.06% Unchanged
87 DAYMARK WEALTH PARTNERS, LLC 0.01% of their portfolio CINCINNATI, OH 5,9756.0k $303.0k $303.0k 0.01% Unchanged
88 BROWN ADVISORY INC 0.00% of their portfolio BALTIMORE, MD 5,1365.1k $260.4k $260.4k 0.00% New
89 Perigon Wealth Management, LLC 0.00% of their portfolio SAN FRANCISCO, CA 5,0045.0k $253.7k $253.7k 0.00% New
90 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 5,0045.0k $253.8k $253.8k 0.00% Reduced -900 -900
91 MOSAIC FINANCIAL GROUP, LLC 0.16% of their portfolio CHICAGO, IL 5,0045.0k $254.0k $254.0k 0.16% New
92 Empirical Asset Management, LLC 0.06% of their portfolio WELLESLEY, MA 5,0005.0k $253.6k $253.6k 0.06% New
93 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 4,9264.9k $249.8k $249.8k 0.00% Reduced -747 -747
94 CASCADE INVESTMENT GROUP, INC. 0.14% of their portfolio Colorado Springs, CO 4,7754.8k $242.1k $242.1k 0.14% New
95 Fort Point Capital Partners LLC 0.02% of their portfolio San Francisco, CA 4,3854.4k $222.4k $222.4k 0.02% New
96 Smartleaf Asset Management LLC 0.01% of their portfolio BOSTON, MA 4,2304.2k $207.5k $207.5k 0.01% Unchanged
97 Pine Valley Investments Ltd Liability Co 0.01% of their portfolio MARLTON, NJ 4,1004.1k $207.9k $207.9k 0.01% New
98 Advisory Services Network, LLC 0.00% of their portfolio ATLANTA, GA 4,0394.0k $204.8k $204.8k 0.00% Added +923 +923
99 First Financial Group Corp 0.15% of their portfolio RALEIGH, NC 4,0004.0k $202.8k $202.8k 0.15% New
100 Capital Investment Advisory Services, LLC 0.01% of their portfolio RALEIGH, NC 3,9964.0k $202.6k $202.6k 0.01% New