Bill Ackman runs Pershing Square Capital Management, L.P.. Concentrated activist investor who takes massive public positions and fights loudly for change. High-conviction, long holding periods, not afraid to be wrong loudly. As of the Q2 2026 13F filing, the disclosed long-equity portfolio is valued at $19.5B across 14 positions. The largest holdings are UBER TECHNOLOGIES INC, BROOKFIELD CORP, and MICROSOFT CORP (UBER TECHNOLOGIES INC alone is 12.7% of the book).

New positions opened in the latest quarter include MASTERCARD INCORPORATED, NETFLIX INC., and PERSHING SQUARE USA LTD. Recently exited names: ALPHABET INC.

Bill Ackman runs Pershing Square Capital Management, L.P.. Concentrated activist investor who takes massive public positions and fights loudly for change. High-conviction, long holding periods, not afraid to be wrong loudly. As of the Q2 2026 13F filing, the disclosed long-equity portfolio is valued at $19.5B across 14 positions. The largest holdings are UBER TECHNOLOGIES INC, BROOKFIELD CORP, and MICROSOFT CORP (UBER TECHNOLOGIES INC alone is 12.7% of the book).

New positions opened in the latest quarter include MASTERCARD INCORPORATED, NETFLIX INC., and PERSHING SQUARE USA LTD. Recently exited names: ALPHABET INC.