Bill Ackman
Pershing Square Capital Management
Founder of Pershing Square. Runs a concentrated portfolio of a dozen or so large companies and is known for public activist campaigns.
13F portfolio value
Q1 2026
$13.71B
1-year growth
+14.9%
2-year growth
+27.4%
Positions
11
Top 10 share
99.9%
Quarterly turnover
18.1%
Last filed
May 15, 2026
Q1 2026: summary
MakklerAI- MSFT was a new position at 15.3% of the portfolio, worth $2.1B.
- AMZN shares rose 19.2%; its portfolio weight increased from 14.3% to 17.4%, reaching $2.4B.
- GOOG and GOOGL shares fell 94.9% and 95.2%; HLT was sold out. BN, UBER and QSR were also trimmed.
- The portfolio held 11 positions worth $13.7B; its top ten made up 99.9%, with 18.1% turnover.
Filings between 13Fs
Form 4 (insider trades, filed within 2 business days) and Schedule 13D/13G (stakes above 5%). Much fresher than a 13F, which can be 45 days old.
1 new filings since the last 13F
13D · active stakeHoward Hughes Holdings Inc.HHHJun 8, 2026
46.7% stake · 27.85M sharesSEC- 13D · active stake
May 8, 2026
- 13D · active stake
Apr 29, 2026
- 13D · active stake
Apr 29, 2026
PROSee moves without the 45-day wait
Unlock the company, size and price of 3 filings with MakklerPRO, and follow the guru to be told about the next one.
MakklerAI
Ask MakklerAI about Bill Ackman's portfolio
Explore this quarter's moves and where each position stands against its estimated buy price and Makkler Fair Value. Answers are based on the 13F and today's prices.