WILLIAM ALBERT ACKMAN is an investment adviser representative (IAR) with state registration records since 2008, appearing at 3 firms. Currently registered with PERSHING SQUARE CAPITAL MANAGEMENT, L.P..
| Firm | From | To | Current |
|---|---|---|---|
| PERSHING SQUARE CAPITAL MANAGEMENT, L.P. | 2008-04-14 | present | Yes |
| PERSHING SQUARE HOLDINGS GP, LLC | 2008-04-14 | 2010-12-17 | — |
| PERSHING SQUARE GP, LLC | 2008-04-14 | 2025-03-19 | — |