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 117.4% since 2016Q1. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.

Track Bill's filings View holdings

Portfolio

$15.53B

Positions

Quarter

2025Q4

Filings tracked

Since filing+117.4%Full performance →

Quarter

2025Q4 2025Q3 2025Q2 2025Q1 2024Q4 2024Q3 2024Q2 2024Q1 2023Q4 2023Q3 2023Q2 2023Q1

Biggest winner since filing

HLTHILTON WORLDWIDE HLDGS INC

+324.7%

+$2.33B

Biggest loser since filing

CMGCHIPOTLE MEXICAN GRILL INC

-50.2%

−$1.04B

Investment strategy

Bill Ackman is a large fund with a concentrated portfolio tilted toward consumer names. 54% of the disclosed equity book is in consumer-facing sectors.

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