Vault-13

BLACKROCK SCIENCE & TECHNOLO BSTZ

SHS BEN INT · Closed-End Fund · CUSIP 09260K101

116 institutional holders +9 vs Q1 2025
19,441,32519.4m shares reported held*
$403.4mreported value*
18 new 38 added 37 reduced 11 sold out net sold ≈ $26.1m (-1.3m 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 ≈ $20.75.

Trends to Q2 2025

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 84Q4 22: 105Q1 23: 94Q2 23: 91Q3 23: 105Q4 23: 108Q1 24: 99Q2 24: 99Q3 24: 102Q4 24: 111Q1 25: 107Q2 25: 116116Q3 22Q2 23Q1 24Q4 24Q2 25
Numbers
QuarterHolders
Q3 202284
Q4 2022105
Q1 202394
Q2 202391
Q3 2023105
Q4 2023108
Q1 202499
Q2 202499
Q3 2024102
Q4 2024111
Q1 2025107
Q2 2025116

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q3 23: 65 bought or addedQ3 23: 30 cut or sold outQ4 23: 56 bought or addedQ4 23: 47 cut or sold outQ4 23Q1 24: 54 bought or addedQ1 24: 47 cut or sold outQ2 24: 48 bought or addedQ2 24: 48 cut or sold outQ2 24Q3 24: 44 bought or addedQ3 24: 52 cut or sold outQ4 24: 38 bought or addedQ4 24: 57 cut or sold outQ4 24Q1 25: 46 bought or addedQ1 25: 61 cut or sold outQ2 25: 56 bought or addedQ2 25: 48 cut or sold outQ2 25
Numbers
QuarterBought or addedCut or sold out
Q3 20236530
Q4 20235647
Q1 20245447
Q2 20244848
Q3 20244452
Q4 20243857
Q1 20254661
Q2 20255648

Biggest buyers

ROYAL BANK OF CANADA Added +280,670+280.7k
FLAGSHIP HARBOR ADVISORS, LLC Added +231,523+231.5k
UBS Group AG Added +113,611+113.6k
Rockefeller Capital Management L.P. Added +111,846+111.8k
BANK OF AMERICA CORP /DE/ Added +94,124+94.1k
Balyasny Asset Management L.P. New +79,839+79.8k
INDEPENDENT FINANCIAL GROUP, LLC New +73,050+73.0k
Invesco Ltd. Added +39,881+39.9k
PREVAIL INNOVATIVE WEALTH ADVISORS, LLC Added +30,665+30.7k
Quantinno Capital Management LP New +27,164+27.2k

Biggest sellers

Saba Capital Management, L.P. Reduced -777,908-777.9k
RAYMOND JAMES FINANCIAL INC Reduced -261,806-261.8k
Karpus Management, Inc. Reduced -244,322-244.3k
SIT INVESTMENT ASSOCIATES INC Sold out -238,864-238.9k
WEDBUSH SECURITIES INC Reduced -168,760-168.8k
MORGAN STANLEY Reduced -121,775-121.8k
AQR Arbitrage LLC Sold out -96,237-96.2k
Potrero Capital Research LLC Reduced -86,958-87.0k
North Ground Capital Sold out -84,374-84.4k
Allspring Global Investments Holdings, LLC Sold out -65,819-65.8k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Saba Capital Management, L.P. 13D · may seek influence +1.1 pts · filed 2026-03-17
Stated purposeNot Applicable. Full filing
 7.9% +1.1 pts 5.5m≈ $163.9m 2026-03-17

Insider purchases and sales in Q2 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.

None reported in Q2 2025.

Holders, Q2 2025

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Saba Capital Management, L.P. 2.33% of their portfolio NEW YORK, NY 4,127,7404.1m $85.7m $85.7m 2.33% Reduced -777.9k -777,908
2 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 2,802,8712.8m $58.2m $58.2m 0.00% Reduced -121.8k -121,775
3 RIVERNORTH CAPITAL MANAGEMENT, LLC 1.48% of their portfolio WEST PALM BEACH, FL 1,289,6641.3m $26.8m $26.8m 1.48% Reduced -65.1k -65,092
4 UBS Group AG 0.01% of their portfolio ZURICH, V8 1,231,7311.2m $25.6m $25.6m 0.01% Added +113.6k +113,611
5 RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio ST. PETERSBURG, FL 1,171,4461.2m $24.3m $24.3m 0.01% Reduced -261.8k -261,806
6 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 990,482990.5k $20.6m $20.6m 0.00% Added +39.9k +39,881
7 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 821,917821.9k $17.1m $17.1m 0.00% Added +94.1k +94,124
8 Penserra Capital Management LLC 0.24% of their portfolio ORINDA, CA 818,870818.9k $17.0m $17.0m 0.24% Added +24.2k +24,186
9 WEDBUSH SECURITIES INC 0.51% of their portfolio PASADENA, CA 698,725698.7k $14.5m $14.5m 0.51% Reduced -168.8k -168,760
10 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 656,418656.4k $13.6m $13.6m 0.00% Added +280.7k +280,670
11 Potrero Capital Research LLC 5.21% of their portfolio SAN FRANCISCO, CA 539,713539.7k $11.2m $11.2m 5.21% Reduced -87.0k -86,958
12 Karpus Management, Inc. 0.29% of their portfolio Pittsford, NY 439,459439.5k $9.1m $9.1m 0.29% Reduced -244.3k -244,322
13 LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 340,290340.3k $7.1m $7.1m 0.01% Reduced -54.8k -54,826
14 FLAGSHIP HARBOR ADVISORS, LLC 0.33% of their portfolio BOSTON, MA 336,660336.7k $7.0m $7.0m 0.33% Added +231.5k +231,523
15 Rockefeller Capital Management L.P. 0.01% of their portfolio NEW YORK, NY 207,182207.2k $4.3m $4.3m 0.01% Added +111.8k +111,846
16 Thomas J. Herzfeld Advisors, Inc. 1.34% of their portfolio MIAMI BEACH, FL 181,310181.3k $3.8m $3.8m 1.34% Reduced -21.5k -21,539
17 OPPENHEIMER & CO INC 0.05% of their portfolio NEW YORK, NY 175,426175.4k $3.6m $3.6m 0.05% Added +8.9k +8,912
18 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 173,915173.9k $3.6m $3.6m 0.00% Added +5.2k +5,224
19 WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.01% of their portfolio PLYMOUTH, MN 151,770151.8k $3.1m $3.1m 0.01% Reduced -13.0k -12,953
20 BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC 0.43% of their portfolio BLUE BELL, PA 124,854124.9k $2.6m $2.6m 0.43% Reduced -20.8k -20,804
21 1607 Capital Partners, LLC 0.19% of their portfolio Richmond, VA 112,055112.1k $2.3m $2.3m 0.19% Reduced -33.0k -33,004
22 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 101,267101.3k $2.1m $2.1m 0.00% Added +13.5k +13,486
23 RFG Advisory, LLC 0.04% of their portfolio BIRMINGHAM, AL 92,03992.0k $1.9m $1.9m 0.04% Added +14.2k +14,176
24 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 90,59490.6k $1.9m $1.9m 0.00% Added +4.8k +4,758
25 PREVAIL INNOVATIVE WEALTH ADVISORS, LLC 0.41% of their portfolio LEAWOOD, KS 87,67687.7k $1.8m $1.8m 0.41% Added +30.7k +30,665
26 Steward Partners Investment Advisory, LLC 0.01% of their portfolio STAMFORD, CT 82,93682.9k $1.7m $1.7m 0.01% Added +2.2k +2,199
27 Balyasny Asset Management L.P. 0.00% of their portfolio Chicago, IL 79,83979.8k $1.7m $1.7m 0.00% New
28 INTREPID FAMILY OFFICE LLC 1.79% of their portfolio SARASOTA, FL 79,67979.7k $1.7m $1.7m 1.79% Reduced -12.8k -12,838
29 Sanctuary Advisors, LLC 0.01% of their portfolio INDIANAPOLIS, IN 79,32879.3k $1.6m $1.6m 0.01% Added +13.2k +13,190
30 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 78,00478.0k $1.6m $1.6m 0.00% Added +7.3k +7,292
31 INDEPENDENT FINANCIAL GROUP, LLC 0.04% of their portfolio SAN DIEGO, CA 73,05073.0k $1.5m $1.5m 0.04% New
32 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 71,47571.5k $1.5m $1.5m 0.00% Reduced -3.5k -3,496
33 TRUIST FINANCIAL CORP 0.00% of their portfolio CHARLOTTE, NC 68,82368.8k $1.4m $1.4m 0.00% Added +3.4k +3,429
34 ABSOLUTE INVESTMENT ADVISERS, LLC 0.16% of their portfolio ROSEMARY BEACH, FL 62,57462.6k $1.3m $1.3m 0.16% Reduced -37.4k -37,418
35 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 58,58758.6k $1.2m $1.2m 0.00% Added +10.1k +10,081
36 NewEdge Wealth, LLC 0.02% of their portfolio STAMFORD, CT 53,46953.5k $1.2m $1.2m 0.02% Reduced -45.2k -45,180
37 HBK INVESTMENTS L P 0.02% of their portfolio DALLAS, TX 52,22252.2k $1.1m $1.1m 0.02% Added +1.1k +1,103
38 LM Advisors LLC 0.13% of their portfolio SAN DIEGO, CA 49,85749.9k $1.0m $1.0m 0.13% Reduced -8.5k -8,509
39 Janney Montgomery Scott LLC 0.00% of their portfolio PHILADELPHIA, PA 49,27149.3k $1.0m $1.0m 0.00% Added +3.1k +3,135
40 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 44,39344.4k $921.2k $921.2k 0.00% Reduced -1.4k -1,365
41 WNY Asset Management, LLC 0.08% of their portfolio Williamsville, NY 33,90633.9k $703.5k $703.5k 0.08% Reduced -4.5k -4,459
42 PFG Investments, LLC 0.04% of their portfolio WOODBURY, NY 31,56031.6k $654.9k $654.9k 0.04% Reduced -1.0k -1,004
43 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 29,90229.9k $620.5k $620.5k 0.00% Added +10.0k +9,968
44 Quarry LP 0.14% of their portfolio NEW YORK, NY 28,81128.8k $597.8k $597.8k 0.14% Reduced -8.4k -8,377
45 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 27,56527.6k $572.0k $572.0k 0.00% Added +12.5k +12,547
46 Quantinno Capital Management LP 0.00% of their portfolio NEW YORK, NY 27,16427.2k $563.7k $563.7k 0.00% New
47 WOLVERINE ASSET MANAGEMENT LLC 0.01% of their portfolio CHICAGO, IL 26,04726.0k $540.5k $540.5k 0.01% New
48 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 25,38525.4k $526.7k $526.7k 0.00% Added +12.3k +12,308
49 SeaCrest Wealth Management, LLC 0.05% of their portfolio PURCHASE, NY 22,49322.5k $466.7k $466.7k 0.05% Reduced -371 -371
50 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 21,71821.7k $450.6k $450.6k 0.00% New
51 Formidable Asset Management, LLC 0.06% of their portfolio CINCINNATI, OH 21,18121.2k $375.8k $375.8k 0.06% Unchanged
52 Walleye Capital LLC 0.00% of their portfolio NEW YORK, NY 20,70520.7k $429.6k $429.6k 0.00% New
53 UHLMANN PRICE SECURITIES, LLC 0.30% of their portfolio SKOKIE, IL 20,23520.2k $419.9k $419.9k 0.30% Reduced -3.8k -3,810
54 Mathes Company, Inc. 0.16% of their portfolio New York, NY 20,20020.2k $419.0k $419.0k 0.16% Unchanged
55 Focus Financial Network, Inc. 0.02% of their portfolio MINNEAPOLIS, MN 18,88418.9k $391.8k $391.8k 0.02% Added +3.1k +3,085
56 NWF Advisory Services Inc. 0.05% of their portfolio Los Angeles, CA 18,69318.7k $387.9k $387.9k 0.05% Reduced -521 -521
57 Atria Wealth Solutions, Inc. 0.01% of their portfolio NEW YORK, NY 18,23318.2k $378.0k $378.0k 0.01% Reduced -200 -200
58 Amplius Wealth Advisors, LLC 0.03% of their portfolio BLUE BELL, PA 17,49617.5k $363.0k $363.0k 0.03% Reduced -425 -425
59 Dakota Wealth Management 0.01% of their portfolio PALM BEACH GARDENS, FL 15,49615.5k $321.5k $321.5k 0.01% Reduced -4.7k -4,706
60 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 14,25214.3k $295.7k $295.7k 0.00% Reduced -7.2k -7,184
61 CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio RALEIGH, NC 13,78013.8k $285.9k $285.9k 0.00% New
62 Delta Investment Management, LLC 0.05% of their portfolio SAN FRANCISCO, CA 13,60013.6k $282.2k $282.2k 0.05% Unchanged
63 Compound Planning, Inc. 0.01% of their portfolio NEW YORK, NY 12,65012.7k $262.5k $262.5k 0.01% Reduced -75 -75
64 B. Riley Wealth Advisors, Inc. 0.01% of their portfolio MEMPHIS, TN 12,47512.5k $258.9k $258.9k 0.01% Reduced -420 -420
65 MATHER GROUP, LLC. 0.00% of their portfolio CHICAGO, IL 12,00012.0k $249.0k $249.0k 0.00% Unchanged
66 Stablepoint Partners, LLC 0.04% of their portfolio BRAINTREE, MA 11,27011.3k $233.9k $233.9k 0.04% Added +500 +500
67 Stockman Wealth Management, Inc. 0.03% of their portfolio BILLINGS, MT 11,26711.3k $233.8k $233.8k 0.03% Added +380 +380
68 Painted Porch Advisors LLC 0.10% of their portfolio SANTA BARBARA, CA 11,25811.3k $233.6k $233.6k 0.10% Added +380 +380
69 Merit Financial Group, LLC 0.00% of their portfolio ALPHARETTA, GA 11,09111.1k $230.1k $230.1k 0.00% New
70 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.02% of their portfolio ORLANDO, FL 10,78510.8k $223.8k $223.8k 0.02% Unchanged
71 Baird Financial Group, Inc. 0.00% of their portfolio MILWAUKEE, WI 10,54410.5k $218.8k $218.8k 0.00% New
72 SENTINEL TRUST CO LBA 0.02% of their portfolio HOUSTON, TX 10,02210.0k $208.0k $208.0k 0.02% New
73 Biltmore Family Office, LLC 0.03% of their portfolio CHARLOTTE, NC 9,7919.8k $203.2k $203.2k 0.03% New
74 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 8,2278.2k $170.7k $170.7k 0.00% Unchanged
75 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 8,0068.0k $166.1k $166.1k 0.00% Reduced -10.9k -10,928
76 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 6,6386.6k $137.7k $137.7k 0.00% Added +767 +767
77 Sunbelt Securities, Inc. 0.01% of their portfolio HOUSTON, TX 6,5256.5k $135.1k $135.1k 0.01% Added +425 +425
78 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 6,3976.4k $132.7k $132.7k 0.00% Added +215 +215
79 THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. 0.02% of their portfolio INDIANAPOLIS, IN 6,2506.2k $129.7k $129.7k 0.02% Unchanged
80 NFSG Corp 0.02% of their portfolio BOCA RATON, FL 5,9365.9k $123.2k $123.2k 0.02% New
81 BlackRock, Inc. 0.00% of their portfolio New York, NY 5,0005.0k $103.8k $103.8k 0.00% Unchanged
82 UMB Bank, n.a. 0.00% of their portfolio Kansas City, MO 2,8502.9k $59.1k $59.1k 0.00% Unchanged
83 AdvisorNet Financial, Inc 0.00% of their portfolio MINNETONKA, MN 2,5272.5k $52.4k $52.4k 0.00% Added +1.2k +1,196
84 Geneos Wealth Management Inc. 0.00% of their portfolio ENGLEWOOD, CO 2,2182.2k $46.0k $46.0k 0.00% Reduced -2.3k -2,272
85 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 2,0172.0k $41.9k $41.9k 0.00% Added +2.0k +2,000
86 SALEM INVESTMENT COUNSELORS INC 0.00% of their portfolio WINSTON-SALEM, NC 2,0002.0k $41.5k $41.5k 0.00% Reduced -577 -577
87 COMERICA BANK 0.00% of their portfolio DALLAS, TX 1,9692.0k $40.9k $40.9k 0.00% Added +269 +269
88 AMERIFLEX GROUP, INC. 0.02% of their portfolio LAS VEGAS, NV 1,8611.9k $37.9k $37.9k 0.02% Added +43 +43
89 Larson Financial Group LLC 0.00% of their portfolio ST LOUIS, MO 1,6001.6k $33.2k $33.2k 0.00% Unchanged
90 ARMSTRONG ADVISORY GROUP, INC 0.00% of their portfolio NEEDHAM, MA 1,4651.5k $30.4k $30.4k 0.00% Added +909 +909
91 EXCHANGE TRADED CONCEPTS, LLC 0.00% of their portfolio Oklahoma City, OK 1,2491.2k $25.9k $25.9k 0.00% New
92 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 1,2081.2k $25.1k $25.1k 0.00% First filing
93 LANARK FINANCIAL, INC. 0.00% of their portfolio BIRMINGHAM, AL 1,0581.1k $21.0k $21.0k 0.00% Added +22 +22
94 WPG Advisers, LLC 0.02% of their portfolio BALTIMORE, MD 941941 $19.5k $19.5k 0.02% Reduced -140 -140
95 JFS WEALTH ADVISORS, LLC 0.00% of their portfolio HERMITAGE, PA 806806 $16.7k $16.7k 0.00% Added +9 +9
96 United Community Bank 0.01% of their portfolio GREENVILLE, SC 785785 $16.3k $16.3k 0.01% Unchanged
97 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 680680 $14.1k $14.1k 0.00% Reduced -1.8k -1,750
98 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 605605 $12.6k $12.6k 0.00% New
99 PRINCIPAL SECURITIES, INC. 0.00% of their portfolio DES MOINES, IA 550550 $11.4k $11.4k 0.00% New
100 MARK SHEPTOFF FINANCIAL PLANNING, LLC 0.01% of their portfolio GLASTONBURY, CT 500500 $10.4k $10.4k 0.01% New