Vault-13

BLACKROCK SCIENCE & TECHNOLO BSTZ

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

91 institutional holders -3 vs Q1 2023
15,511,02715.5m shares reported held*
$280.9mreported value*
7 new 39 added 22 reduced 10 sold out net sold ≈ $6.5m (-358.9k 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 ($605.5k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $18.11.

Trends to Q2 2023

Institutional holders

Managers reporting a position, each quarter

050100150Q3 22: 84Q4 22: 105Q1 23: 94Q2 23: 9191Q3 22Q4 22Q1 23Q2 23
Numbers
QuarterHolders
Q3 202284
Q4 2022105
Q1 202394
Q2 202391

Buyers vs sellers

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

Bought or addedCut or sold out
1000100Q4 22: 62 bought or addedQ4 22: 37 cut or sold outQ4 22Q1 23: 43 bought or addedQ1 23: 59 cut or sold outQ1 23Q2 23: 46 bought or addedQ2 23: 32 cut or sold outQ2 23
Numbers
QuarterBought or addedCut or sold out
Q4 20226237
Q1 20234359
Q2 20234632

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$1k$2k$3kQ3 22 calls: $0Q3 22 puts: $3.0kQ3 22P/C —Q4 22 calls: $0Q4 22 puts: $0Q4 22P/C —Q1 23 calls: $0Q1 23 puts: $0Q1 23P/C —Q2 23 calls: $0Q2 23 puts: $0Q2 23P/C —
Numbers
QuarterCallsPutsP/C
Q3 2022$0$3.0k—
Q4 2022$0$0—
Q1 2023$0$0—
Q2 2023$0$0—

Biggest buyers

HighTower Advisors, LLC New +137,773+137.8k
Thomas J. Herzfeld Advisors, Inc. Added +75,859+75.9k
WEDBUSH SECURITIES INC Added +54,852+54.9k
AQR Arbitrage LLC Added +52,427+52.4k
1607 Capital Partners, LLC Added +50,046+50.0k
RPO LLC New +41,042+41.0k
WELLS FARGO & COMPANY/MN Added +25,806+25.8k
PFG Investments, LLC New +25,150+25.1k
Quarry LP Added +24,340+24.3k
CLOUGH CAPITAL PARTNERS L P Added +24,340+24.3k

Biggest sellers

MORGAN STANLEY Reduced -265,932-265.9k
SMITH, MOORE & CO. Sold out -182,909-182.9k
BANK OF AMERICA CORP /DE/ Reduced -96,134-96.1k
Logan Stone Capital, LLC Sold out -77,202-77.2k
JPMORGAN CHASE & CO Sold out -58,974-59.0k
Saba Capital Management, L.P. Reduced -57,134-57.1k
UBS Group AG Reduced -48,056-48.1k
STIFEL FINANCIAL CORP Reduced -30,137-30.1k
Invesco Ltd. Reduced -29,708-29.7k
BANK OF MONTREAL /CAN/ Sold out -29,545-29.5k

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 2023

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 2023.

Holders, Q2 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 3,801,8843.8m $68.9m $68.9m 0.01% Reduced -265.9k -265,932
2 UBS Group AG 0.01% of their portfolio ZURICH, V8 1,347,0081.3m $24.4m $24.4m 0.01% Reduced -48.1k -48,056
3 Karpus Management, Inc. 0.72% of their portfolio Pittsford, NY 1,271,8971.3m $23.0m $23.0m 0.72% Reduced -3.7k -3,671
4 Invesco Ltd. 0.01% of their portfolio ATLANTA, GA 1,134,1411.1m $20.5m $20.5m 0.01% Reduced -29.7k -29,708
5 RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio ST PETERSBURG, FL 923,940923.9k $16.7m $16.7m 0.01% Added +13.4k +13,397
6 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 705,442705.4k $12.8m $12.8m 0.00% Reduced -96.1k -96,134
7 1607 Capital Partners, LLC 0.76% of their portfolio Richmond, VA 589,234589.2k $10.7m $10.7m 0.76% Added +50.0k +50,046
8 Saba Capital Management, L.P. 0.28% of their portfolio NEW YORK, NY 466,985467.0k $8.5m $8.5m 0.28% Reduced -57.1k -57,134
9 Raymond James Financial Services Advisors, Inc. 0.01% of their portfolio ST. PETERSBURG, FL 445,802445.8k $8.1m $8.1m 0.01% Added +17.4k +17,417
10 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 384,082384.1k $7.0m $7.0m 0.00% Added +25.8k +25,806
11 WEDBUSH SECURITIES INC 0.33% of their portfolio PASADENA, CA 376,362376.4k $6.8m $6.8m 0.33% Added +54.9k +54,852
12 Quantedge Capital Pte Ltd 2.79% of their portfolio Singapore, U0 346,022346.0k $6.3m $6.3m 2.79% Reduced -26.4k -26,427
13 LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 339,495339.5k $6.1m $6.1m 0.01% Unchanged
14 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 302,677302.7k $5.5m $5.5m 0.00% Reduced -19.1k -19,079
15 PREVAIL INNOVATIVE WEALTH ADVISORS, LLC 2.76% of their portfolio LEAWOOD, KS 277,562277.6k $5.0m $5.0m 2.76% First filing
16 CLOUGH CAPITAL PARTNERS L P 0.45% of their portfolio Boston, MA 247,940247.9k $4.5m $4.5m 0.45% Added +24.3k +24,340
17 CITY OF LONDON INVESTMENT MANAGEMENT CO LTD 0.33% of their portfolio London, X0 225,972226.0k $4.1m $4.1m 0.33% Unchanged
18 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 210,672210.7k $3.8m $3.8m 0.00% Reduced -7.3k -7,297
19 Woodline Partners LP 0.03% of their portfolio San Francisco, CA 162,077162.1k $2.9m $2.9m 0.03% Unchanged
20 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 137,773137.8k $2.5m $2.5m 0.00% New
21 Rockefeller Capital Management L.P. 0.01% of their portfolio NEW YORK, NY 137,691137.7k $2.5m $2.5m 0.01% First filing
22 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 98,59898.6k $1.8m $1.8m 0.00% Reduced -30.1k -30,137
23 AQR Arbitrage LLC 0.08% of their portfolio Greenwich, CT 97,78897.8k $1.8m $1.8m 0.08% Added +52.4k +52,427
24 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 95,65795.7k $1.7m $1.7m 0.00% Added +6.9k +6,909
25 Claro Advisors Inc. 0.37% of their portfolio BOSTON, MA 82,74282.7k $1.5m $1.5m 0.37% Added +104 +104
26 Matisse Capital 0.90% of their portfolio PORTLAND, OR 80,00080.0k $1.4m $1.4m 0.90% Unchanged
27 Thomas J. Herzfeld Advisors, Inc. 0.55% of their portfolio MIAMI BEACH, FL 76,13976.1k $1.4m $1.4m 0.55% Added +75.9k +75,859
28 TRUIST FINANCIAL CORP 0.00% of their portfolio CHARLOTTE, NC 72,29772.3k $1.3m $1.3m 0.00% Added +1.8k +1,752
29 Steward Partners Investment Advisory, LLC 0.02% of their portfolio STAMFORD, CT 67,71067.7k $1.2m $1.2m 0.02% Added +4.8k +4,850
30 OPPENHEIMER & CO INC 0.02% of their portfolio NEW YORK, NY 63,18263.2k $1.1m $1.1m 0.02% Added +4.8k +4,824
31 J.P. Morgan Private Wealth Advisors LLC 0.01% of their portfolio SAN FRANCISCO, CA 60,68860.7k $1.1m $1.1m 0.01% Reduced -8.4k -8,448
32 LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 0.14% of their portfolio Englewood, NJ 59,29059.3k $1.1m $1.1m 0.14% Added +10.6k +10,619
33 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 56,96757.0k $1.0m $1.0m 0.00% Added +646 +646
34 NewEdge Wealth, LLC 0.03% of their portfolio STAMFORD, CT 53,91853.9k $976.5k $976.5k 0.03% Added +7.8k +7,773
35 Janney Montgomery Scott LLC 0.00% of their portfolio PHILADELPHIA, PA 44,90644.9k $813.0k $813.0k 0.00% Reduced -6.2k -6,229
36 Baird Financial Group, Inc. 0.00% of their portfolio MILWAUKEE, WI 43,01043.0k $778.9k $778.9k 0.00% Added +2.1k +2,124
37 RPO LLC 0.76% of their portfolio Stamford, CT 41,04241.0k $743.3k $743.3k 0.76% New
38 Quarry LP 0.46% of their portfolio NEW YORK, NY 39,44039.4k $714.3k $714.3k 0.46% Added +24.3k +24,340
39 Dakota Wealth Management 0.03% of their portfolio PALM BEACH GARDENS, FL 33,71033.7k $610.5k $610.5k 0.03% Added +1.5k +1,540
40 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 32,91632.9k $596.1k $596.1k 0.00% Added +65 +65
41 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 31,51731.5k $570.8k $570.8k 0.00% Added +1.2k +1,207
42 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 29,26029.3k $530.0k $530.0k 0.00% Added +1.2k +1,205
43 NWF Advisory Services Inc. 0.11% of their portfolio Los Angeles, CA 25,97526.0k $470.4k $470.4k 0.11% Unchanged
44 INSIGNEO ADVISORY SERVICES, LLC 0.09% of their portfolio MIAMI, FL 25,64425.6k $464.4k $464.4k 0.09% Reduced -5.2k -5,225
45 PFG Investments, LLC 0.08% of their portfolio WOODBURY, NY 25,15025.1k $455.5k $455.5k 0.08% New
46 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 25,04425.0k $453.5k $453.5k 0.00% Unchanged
47 FIRETHORN WEALTH PARTNERS, LLC 0.27% of their portfolio AUGUSTA, GA 20,26120.3k $366.9k $366.9k 0.27% Added +363 +363
48 CENTAURUS FINANCIAL, INC. 0.03% of their portfolio ANAHEIM, CA 20,25620.3k $367.0k $367.0k 0.03% Reduced -5.6k -5,558
49 Eudaimonia Partners, LLC 0.08% of their portfolio Winchester, TN 19,35819.4k $350.6k $350.6k 0.08% Added +730 +730
50 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 18,46918.5k $334.5k $334.5k 0.01% New
51 Amplius Wealth Advisors, LLC 0.04% of their portfolio BLUE BELL, PA 17,20417.2k $311.6k $311.6k 0.04% Reduced -8.7k -8,726
52 RAYMOND JAMES TRUST N.A. 0.01% of their portfolio ST. PETERSBURG, FL 16,80016.8k $304.0k $304.0k 0.01% Unchanged
53 Cetera Advisor Networks LLC 0.00% of their portfolio EL SEGUNDO, CA 15,90315.9k $288.0k $288.0k 0.00% Unchanged
54 TRANSCEND CAPITAL ADVISORS, LLC 0.03% of their portfolio MADISON, NJ 15,37715.4k $278.5k $278.5k 0.03% Added +186 +186
55 SeaCrest Wealth Management, LLC 0.03% of their portfolio PURCHASE, NY 15,10115.1k $273.5k $273.5k 0.03% Added +502 +502
56 Delta Investment Management, LLC 0.07% of their portfolio SAN FRANCISCO, CA 13,60013.6k $246.3k $246.3k 0.07% Unchanged
57 Atria Wealth Solutions, Inc. 0.00% of their portfolio NEW YORK, NY 13,60013.6k $246.3k $246.3k 0.00% Reduced -100 -100
58 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 13,31513.3k $241.1k $241.1k 0.00% Added +115 +115
59 B. Riley Wealth Advisors, Inc. 0.01% of their portfolio MEMPHIS, TN 13,30013.3k $240.9k $240.9k 0.01% Added +2.4k +2,355
60 INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio ORLANDO, FL 12,68612.7k $229.7k $229.7k 0.03% New
61 SENTINEL TRUST CO LBA 0.03% of their portfolio HOUSTON, TX 12,65612.7k $229.0k $229.0k 0.03% Unchanged
62 Focus Financial Network, Inc. 0.01% of their portfolio MINNEAPOLIS, MN 12,36112.4k $223.8k $223.8k 0.01% Added +1.1k +1,116
63 WALLED LAKE PLANNING & WEALTH MANAGEMENT, LLC 0.10% of their portfolio HIGHLAND PARK, IL 11,80111.8k $213.7k $213.7k 0.10% Added +151 +151
64 Compound Planning, Inc. 0.09% of their portfolio NEW YORK, NY 11,47611.5k $207.8k $207.8k 0.09% Reduced -4.1k -4,133
65 WNY Asset Management, LLC 0.04% of their portfolio Williamsville, NY 10,50010.5k $190.2k $190.2k 0.04% New
66 Stockman Wealth Management, Inc. 0.04% of their portfolio BILLINGS, MT 10,47110.5k $189.6k $189.6k 0.04% Reduced -3.8k -3,800
67 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 9,3089.3k $168.6k $168.6k 0.00% Reduced -2.3k -2,347
68 BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC 0.04% of their portfolio BLUE BELL, PA 8,0358.0k $145.5k $145.5k 0.04% Added +711 +711
69 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 5,1435.1k $93.2k $93.2k 0.00% Added +141 +141
70 BlackRock Inc. 0.00% of their portfolio New York, NY 5,0005.0k $90.5k $90.5k 0.00% Reduced -2.4k -2,433
71 Castleview Partners, LLC 0.08% of their portfolio DALLAS, TX 4,7364.7k $85.8k $85.8k 0.08% Added +4.6k +4,560
72 Sunbelt Securities, Inc. 0.01% of their portfolio HOUSTON, TX 3,0003.0k $54.3k $54.3k 0.01% Unchanged
73 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 1,9291.9k $34.9k $34.9k 0.00% Added +426 +426
74 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 1,7501.8k $31.7k $31.7k 0.00% Reduced -950 -950
75 Anchor Investment Management, LLC 0.00% of their portfolio COLUMBIA, SC 1,7501.8k $31.7k $31.7k 0.00% Unchanged
76 Aspire Private Capital, LLC 0.01% of their portfolio Cornelius, NC 1,7201.7k $31.2k $31.2k 0.01% Added +47 +47
77 Clearstead Advisors, LLC 0.00% of their portfolio CLEVELAND, OH 1,3221.3k $23.9k $23.9k 0.00% Unchanged
78 Focused Wealth Management, Inc 0.00% of their portfolio Newburgh, NY 1,2851.3k $23.3k $23.3k 0.00% Added +3 +3
79 ICA Group Wealth Management, LLC 0.01% of their portfolio DENVER, CO 1,1201.1k $20.3k $20.3k 0.01% Unchanged
80 Ancora Advisors LLC 0.00% of their portfolio Cleveland, OH 1,1031.1k $20.0k $20.0k 0.00% Unchanged
81 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 1,0001.0k $18.1k $18.1k 0.00% Unchanged
82 Retirement Group, LLC 0.01% of their portfolio SAN DIEGO, CA 982982 $17.8k $17.8k 0.01% Added +17 +17
83 JFS WEALTH ADVISORS, LLC 0.00% of their portfolio HERMITAGE, PA 976976 $17.7k $17.7k 0.00% Added +13 +13
84 Larson Financial Group LLC 0.00% of their portfolio ST LOUIS, MO 850850 $15.4k $15.4k 0.00% Added +150 +150
85 HHM Wealth Advisors, LLC 0.00% of their portfolio CHATTANOOGA, TN 612612 $11.1k $11.1k 0.00% Unchanged
86 ARMSTRONG ADVISORY GROUP, INC 0.00% of their portfolio NEEDHAM, MA 550550 $10.0k $10.0k 0.00% New
87 M&R CAPITAL MANAGEMENT INC 0.00% of their portfolio SUMMIT, NJ 463463 $8.4k $8.4k 0.00% Reduced -442 -442
88 VALLEY NATIONAL ADVISERS INC 0.00% of their portfolio BETHLEHEM, PA 7070 $2.0k $2.0k 0.00% Unchanged
89 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 1414 $253 $253 0.00% Unchanged
90 CWM, LLC 0.00% of their portfolio OMAHA, NE 11 $0 $0 0.00% Unchanged
91 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged