Veteran activist investor and hedge fund manager known for concentrated, event-driven activism and public campaigns that target corporate strategy, capital allocation and management change. William Ackman founded and leads Pershing Square Capital Management, a US-based long/short activist hedge fund with a focus on deep fundamental research and high-conviction positions across consumer, healthcare and financials. Frequently engages in proxy fights and restructurings; market-facing style can catalyze outsized stock moves and generate both short-term volatility and long-term strategic shifts.
Veteran activist investor and hedge fund manager known for concentrated, event-driven activism and public campaigns that target corporate strategy, capital allocation and management change. William Ackman founded and leads Pershing Square Capital Management, a US-based long/short activist hedge fund with a focus on deep fundamental research and high-conviction positions across consumer, healthcare and financials. Frequently engages in proxy fights and restructurings; market-facing style can catalyze outsized stock moves and generate both short-term volatility and long-term strategic shifts.
Activist, event-driven investing focused on concentrated, high‑conviction positions that seek to unlock shareholder value through governance changes, capital allocation reform and strategic exits. Emphasizes deep fundamental research and scenario-driven underwriting, pairing long-term thesis conviction with tactical public campaigns and proxy engagement to catalyze outcomes. Capital allocation favors sizeable stakes in mid-to-large cap consumer, healthcare and financial names where operational fixes or balance-sheet restructuring can materially boost returns. Maintains a catalyst-oriented time horizon, disciplined risk sizing around idiosyncratic catalysts, and readiness to use public markets and media to accelerate value realization.
Activist, event-driven investing focused on concentrated, high‑conviction positions that seek to unlock shareholder value through governance changes, capital allocation reform and strategic exits. Emphasizes deep fundamental research and scenario-driven underwriting, pairing long-term thesis conviction with tactical public campaigns and proxy engagement to catalyze outcomes. Capital allocation favors sizeable stakes in mid-to-large cap consumer, healthcare and financial names where operational fixes or balance-sheet restructuring can materially boost returns. Maintains a catalyst-oriented time horizon, disciplined risk sizing around idiosyncratic catalysts, and readiness to use public markets and media to accelerate value realization.
| Trades 15 | Longs Won 11/15 73% | Profit Factor 16.75 |
| Profitability | Shorts Won 0/0 0% | Standard Deviation $194.25M |
| Average Win $159.61M | Best Trade (Aug 15) $759.58M | Sharpe Ratio 0.84 |
| Average Loss -$26.21M | Worst Trade (Aug 15) -$92.19M | Z-Score 3.24 (99.88%) |
| Commissions $0 | Avg. Trade Length 2m 1w 3d | Expectancy $110.06M |
| Loss Size | 100% | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
| Probability of Loss | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% | <0.01% |
| Consecutive Losing Trades | 803 | 722 | 642 | 562 | 482 | 401 | 321 | 241 | 161 | 80 |
| Symbol | Quantity | Cost | Value | Comm. | Profit ($) | Gain (%) | Change |
|---|---|---|---|---|---|---|---|
AMZN Amazon.com Inc | 8.56M | $2.04B | $2.25B | - | $208.19M | 10.2% | -0.935% |
BN Brookfield Corporation | 57.48M | $2.45B | $2.52B | - | $72.43M | 2.96% | -2.793% |
HHH Howard Hughes Holdings Inc. | 27.85M | $1.96B | $1.85B | - | -$100.29M | -5.13% | -1.639% |
HTZ Hertz Global Holdings, Inc. | 14.99M | $33.96M | $33.58M | - | -$374,789.97 | -1.1% | -4.478% |
MA Mastercard Incorporated | 2.12M | $1.09B | $1.21B | - | $118.32M | 10.84% | +0.397% |
META Meta Platforms Inc Class A | 3.2M | $1.8B | $1.89B | - | $84.89M | 4.72% | -0.861% |
MSFT Microsoft Corp. | 6.21M | $2.32B | $3.07B | - | $759.58M | 32.81% | -0.298% |
NFLX Netflix, Inc. | 13.08M | $934.02M | $1.02B | - | $88.43M | 9.47% | -0.102% |
PSUS Pershing Square USA Ltd. | 4M | $165.2M | $161.04M | - | -$4.16M | -2.52% | +0.199% |
QSR Restaurant Brands International Inc. | 25.82M | $1.87B | $2B | - | $132.46M | 7.07% | +1.371% |
SEG Seaport Entertainment Group, Inc. | 5.02M | $133.63M | $139.21M | - | $5.58M | 4.17% | -3.112% |
SPGI S&P Global Inc. | 2.59M | $999.14M | $1.09B | - | $86.88M | 8.7% | -0.916% |
UBER Uber Technologies, Inc. | 34.33M | $2.48B | $2.61B | - | $130.1M | 5.25% | +0.092% |
V Visa Inc. Class A | 3.27M | $1.12B | $1.19B | - | $68.88M | 6.14% | -0.356% |