Activist · CIK 0001336528
Bill Ackman
Pershing Square
Bill Ackman runs Pershing Square, an activist overseeing $15.53B in disclosed equity holdings (SEC CIK 0001336528). The latest portfolio (2025Q4) discloses 11 positions across 6 sectors, with the largest positions in BN, UBER and AMZN. On a mark-to-market basis the tracked portfolio has returned 90.7% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Portfolio
$15.53B
Positions
11
Quarter
2025Q4
Filings tracked
40
Biggest winner since filing
HLTHILTON WORLDWIDE HLDGS INC
+311.5%
+$2.30B
Biggest loser since filing
CMGCHIPOTLE MEXICAN GRILL INC
-51.2%
−$27.4M
Investment strategy
Bill Ackman is a large fund with a concentrated portfolio tilted toward consumer names. 56% of the disclosed equity book is in consumer-facing sectors.
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<iframe src="https://openstocks.me/embed/stock/CMG" width="100%" height="480" frameborder="0" loading="lazy" title="CMG chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>Holdings
4 sectors7 positions
Top 3 = 56% of book · CMG, HLT, QSR
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Performance
vs SPY40 quarters tracked
Mark-to-market portfolio growth vs SPY benchmark, with AUM and concentration history.
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Options & derivatives
No options
Bill Ackman has no PUT or CALL positions disclosed for this quarter.
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Activity & trades
Quarter-by-quarterLast move 2025Q4
ADD BN — and 4 more recent moves.
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Recent transactions
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SOLD
CHIPOTLE MEXICAN GRILL INC
−21,541,177
~$39.19 · 2025Q4
2026-02-17