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Built from publicly disclosed institutional and insider activity. Informational purposes only - not investment advice.OpenStocks · v0.1
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  1. Home/
  2. ETFs/
  3. BSTZ
ETF · 09260K101

BSTZ

CEF
BLACKROCK SCIENCE & TECHNOLO
← All ETFs
Sign in to saveShare
Holders (tracked)
3
Combined shares
39,118
Combined value
$884.5K
Last close
$25.13
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
312023Q42025Q4
Filing-implied avg cost: $22.61 · live $25.13

Who owns BSTZ

3 super-investors · 2025Q4
Tracked stake
39.1K
shares
Combined value
$884K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added1Trim1Held1
#ManagerSharesValue% of bookLast action8Q trend
1Ken Griffin
Citadel Advisors
18.6K$421K0.0%
Added+6.9K
2AQR Capital Management15.5K$351K0.0%
Trim−1.6K
3BlackRock5.0K$113K0.0%
Held

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to1
  • Ken Griffin (Citadel Advisors)
    +6,893
    $156K
Trimmed1
  • AQR Capital Management
    −1,611
    $36K
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersSharesCombined valueΔ holders
2022Q4
1
16,022
$251K
—
2023Q4
1
12,124
$203K
—
2024Q1
1
10,935
$212K
—
2024Q3
1
5,000
$96K
—
2024Q4
1
5,000
$104K
—
2025Q1
1
5,000
$89K
—
2025Q2
2
26,718
$554K
+1
2025Q3
3
33,836
$750K
+1
2025Q4
3
39,118
$884K
—