Bill Ackman's AI Stock Portfolio
Founder of Pershing Square, running a concentrated book of a dozen or so large positions he holds for years. This page filters Pershing Square's Q1 2026 13F filing through the Supercycle universe: 6 of its reported positions are AI buildout companies, together 60.2% of the portfolio by value.
From the 13F-HR filed for the quarter ended . 13F filings cover long US-listed positions only and lag the quarter by up to 45 days; positions may have changed since. Not investment advice.
AI holdings, scored
| # | Holding | Value | % of portfolio | AI score | Layer | Q/Q |
|---|---|---|---|---|---|---|
| 1 | AMZNAmazon | $2.39B | 17.4% | 58 | Cloud & Hyperscalers | Added +19% |
| 2 | UBERUber Technologies | $2.15B | 15.7% | 20 | Autonomous Vehicles | Trimmed -1% |
| 3 | MSFTMicrosoft | $2.09B | 15.3% | 75 | Cloud & Hyperscalers | New |
| 4 | METAMeta Platforms | $1.52B | 11.1% | 60 | Foundation Models | Trimmed -0% |
| 5 | GOOGLAlphabet | $89.42M | 0.7% | 70 | Cloud & Hyperscalers | Trimmed -54% |
| 6 | GOOGLAlphabet | $9.31M | 0.1% | 70 | Cloud & Hyperscalers | Trimmed -95% |
Where the AI money sits in the buildout
What changed: Q4 2025 to Q1 2026
Frequently asked questions
What is Bill Ackman's biggest AI stock?
In the Q1 2026 13F, Pershing Square's largest tracked AI position is Amazon (AMZN) at $2.39B, 17.4% of the reported portfolio. AMZN carries an AI Exposure Score of 58.
How much of Bill Ackman's portfolio is in AI stocks?
60.2% of Pershing Square's Q1 2026 13F value ($8.25B of $13.71B) is in companies in the Supercycle AI universe, with a value-weighted AI Exposure Score of 53 (Strategic tier).
What did Bill Ackman change last quarter?
Between Q4 2025 and Q1 2026: added AMZN, trimmed UBER, new MSFT, trimmed META, trimmed GOOGL, trimmed GOOGL.