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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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  3. BlackRock
  • Overview
  • Portfolio5.5k
  • Performance6Q
  • Options48
  • Activity26k
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BlackRock

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  • Asset Manager · CIK 0002012383
  • Mega-Fund

BlackRock, an asset manager overseeing $5.89T in disclosed equity holdings (SEC CIK 0002012383). The latest portfolio (2025Q4) discloses 5484 positions across 11 sectors, with the largest positions in NVDA, AAPL and MSFT. On a mark-to-market basis the tracked portfolio has returned 20.8% since 2024Q3. OpenStocks tracks 6 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track BlackRock's filingsView holdings↓
Portfolio
$5.89T
Positions
5484
Quarter
2025Q4
Filings tracked
6
Since filing+20.8%Full performance →
Quarter
2025Q42025Q32025Q22025Q12024Q42024Q3
Biggest winner since filing
NVDANVIDIA CORPORATION
+62.4%
+$149.17B
Biggest loser since filing
NFLXNETFLIX INC
-41.4%
−$22.79B

Investment strategy

BlackRock is a mega-fund. Disclosed equity book is over $100B.

Embed this chart
Paste this iframe anywhere to embed the live NVDA chart.
<iframe src="https://openstocks.me/embed/stocks/NVDA" width="100%" height="480" frameborder="0" loading="lazy" title="NVDA chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>
Preview: https://openstocks.me/embed/stocks/NVDA

Holdings

11 sectors
1200 positions
Top 3 = 16% of book · NVDA, AAPL, MSFT
View full portfolio →

Performance

vs SPY
6 quarters tracked
Mark-to-market portfolio growth vs SPY benchmark, with AUM and concentration history.
View performance →

Options & derivatives

Bullish bets
48 option positions
Largest: CALL SPY ($20.43B notional)
View options →

Activity & trades

Quarter-by-quarter
Last move 2025Q4
ADD ACCO — and 4 more recent moves.
View activity →

Recent transactions

See full activity →
ADD
A
BlackRock added to ACCO
ACCO BRANDS CORP
+14,065
~$3.73 · 2025Q4
2026-02-12
ADD
A
BlackRock added to AAON
AAON INC
+15,385
~$76.25 · 2025Q4
2026-02-12
ADD
A
BlackRock added to AIR
AAR CORP
+587,144
~$82.79 · 2025Q4
2026-02-12
ADD
W
BlackRock added to WHWK
AADI BIOSCIENCE INC
+2,853
~$2.42 · 2025Q4
2026-02-12
ADD
A
BlackRock added to ACNB
ACNB CORP
+7,952
~$48.35 · 2025Q4
2026-02-12
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