13F filings
Bill Ackman
Where the disclosed book sits
by disclosed valueLargest holdings
all 11 positions| Holding | Type | Value | Shares | Share of book |
|---|---|---|---|---|
| BNBrookfield Corp | Shares | $2.4B | 59,697,208 | 17.6% |
| AMZNAmazon Com Inc | Shares | $2.4B | 11,451,981 | 17.4% |
| UBERUBER Technologies Inc | Shares | $2.2B | 29,958,771 | 15.7% |
| MSFTMicrosoft Corp | Shares | $2.1B | 5,654,078 | 15.3% |
| QSRRestaurant Brands Intl Inc | Shares | $1.7B | 22,645,483 | 12.2% |
| METAMETA Platforms Inc | Shares | $1.5B | 2,660,861 | 11.1% |
| HHHHoward Hughes Holdings Inc | Shares | $1.2B | 18,852,064 | 8.7% |
| SEGSeaport Entmt Group Inc | Shares | $107.9M | 5,023,780 | 0.8% |
| GOOGAlphabet Inc | Shares | $89.4M | 311,726 | 0.7% |
| HTZHertz Global Hldgs Inc | Shares | $70.3M | 15,241,127 | 0.5% |
| GOOGLAlphabet Inc | Shares | $9.3M | 32,376 | 0.1% |
Share of book is the position's value against the whole disclosed 13F value, so the rows shown here do not sum to 100% unless every position is listed.
GetSignal pushes each new 13F to your phone as it is filed, with the positions that changed and the companies behind them. Free on iOS and Android.
What changed last quarter
6 largest moves| Holding | Move | Share change | Value change | Value after |
|---|---|---|---|---|
| MSFTMICROSOFT CORP | New | n/a | $2.1B | $2.1B |
| GOOGALPHABET INC | Trimmed | -94.9% | -$1.7B | $89.4M |
| HLTHILTON WORLDWIDE HLDGS INC | Exited | n/a | -$870.0M | $0 |
| AMZNAMAZON COM INC | Added | +19.2% | $384.1M | $2.4B |
| GOOGLALPHABET INC | Trimmed | -95.2% | -$185.7M | $9.3M |
| BNBROOKFIELD CORP | Trimmed | -2.8% | -$69.0M | $2.4B |
A change is this filing measured against the one before it. A 13F does not disclose trades, so the price paid and the day it happened are not in the record.
Questions
What does Bill Ackman hold?
Bill Ackman disclosed 11 positions worth $13.7B in the Q1 2026 13F filing. The largest is BN at 17.6% of the disclosed book. A 13F lists long US equity positions only.
What did Bill Ackman buy and sell last quarter?
Comparing the Q1 2026 filing with the quarter before, the largest moves were New MSFT, Trimmed GOOG, Exited HLT, Added AMZN. Changes are measured against the previous filing, not against trades, because a 13F does not disclose trades.
How current is this?
This is the Q1 2026 filing, covering positions held on Mar 31, 2026. A 13F is due 45 days after the quarter ends, so the most recent filing is always at least six weeks behind the market, and the manager may have changed the book since.
How to read a 13F
WHAT THE FILING COVERS
Positions are as disclosed to the SEC on Form 13F and are not investment advice. How this data is sourced, and what it cannot tell you, is on the methodology page.
Data as of Sep 10, 2026.