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 13F filing (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 13F filings 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

1Y+90.7%3Y+19.8%5Y+23.5%Full performance →

Quarter

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

Biggest winner since filing

GOOGALPHABET INC

+212.9%

+$1.40B

Biggest loser since filing

BNBROOKFIELD CORP

-6.9%

−$210.1M

Investment strategy

Bill Ackman is a large fund with a concentrated portfolio. Top 3 positions are 48% of the equity book.

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