BA
Bill Ackman
Firm: Pershing Square
AUM: ~$18.5B
Style: Activist
“The activist billionaire”
Top Holding
QSR
Positions
22
Latest Filing
Q4 2025
Data Source
SEC 13F
Performance
Pershing (Ackman)
Investment Philosophy
Bill Ackman is one of Wall Street’s most prominent activist investors. His Pershing Square Capital takes large, concentrated positions in companies he believes are undervalued, then pushes for operational or strategic changes. His high-conviction style has produced both spectacular wins and notable losses.
Current Portfolio
Source: SEC 13F Filing (Q4 2025) — Pershing Square Capital
| Ticker / Security Name | Shares (MM) | Δ Shares (%) | Value (Full $) | Portfolio (%) |
|---|---|---|---|---|
| QSR / Restaurant Brands International | 8.08 | -2.09% | $550,000,000 | 10.44% |
| AMZN / Amazon.com, Inc. | 2.12 | NEW | $490,000,000 | 9.28% |
| WTW / Willis Towers Watson PLC | 1.36 | +24.66% | $450,000,000 | 8.45% |
| ELV / Elevance Health, Inc. | 1.27 | -3.77% | $440,000,000 | 8.43% |
| UNP / Union Pacific Corporation | 1.63 | +8.76% | $380,000,000 | 7.13% |
| WCC / WESCO International, Inc. | 1.42 | -5.61% | $350,000,000 | 6.58% |
| GOOG / Alphabet Inc. (Class C) | 1.09 | -41.49% | $340,000,000 | 6.46% |
| FIS / Fidelity National Information Services | 4.50 | +18.84% | $300,000,000 | 5.67% |
| DG / Dollar General Corporation | 2.06 | -22.65% | $270,000,000 | 5.19% |
| FERG / Ferguson Enterprises Inc. | 1.14 | -1.60% | $250,000,000 | 4.80% |
| EXP / Eagle Materials Inc. | 1.19 | +26.14% | $240,000,000 | 4.64% |
| LBTYK / Liberty Global Ltd. | 20.88 | -3.57% | $230,000,000 | 4.37% |
| GPC / Genuine Parts Company | 1.49 | +6.53% | $180,000,000 | 3.46% |
| FI / Fiserv, Inc. | 2.20 | +145.81% | $150,000,000 | 2.80% |
| CRH / CRH plc | 1.07 | -68.29% | $130,000,000 | 2.54% |
| HLF / Herbalife Ltd. | 9.26 | +19.33% | $120,000,000 | 2.26% |
| MOH / Molina Healthcare, Inc. | 0.62 | NEW | $110,000,000 | 2.05% |
| AERO / Grupo Aeroméxico S.A. | 4.86 | NEW | $110,000,000 | 2.02% |
| GDS / GDS Holdings Limited | 3.04 | -6.31% | $110,000,000 | 2.01% |
| COLD / Americold Realty Trust, Inc. | 3.48 | -3.45% | $40,000,000 | 0.85% |
| LBTYA / Liberty Global Ltd. | 2.08 | -59.02% | $20,000,000 | 0.44% |
| TBN / Tamboran Resources Corporation | 0.26 | -54.94% | $10,000,000 | 0.13% |