Mason Capital Management LLC
Mason Capital Management LLC is a New York-based hedge fund manager established in 2000. The firm specializes in event-driven investment strategies and primarily serves institutional investors. As of 2025, Mason Capital Management reports around 14 employees and maintains a concentrated, actively managed portfolio.
Investment Strategy
Mason Capital Management LLC pursues event-driven strategies, focusing on investing in corporate transactions such as mergers, spinoffs, and restructuring events. The firm manages a concentrated portfolio with high conviction positions and adapts its strategies to capitalize on inefficiencies in the market tied to specific corporate actions. The firm is known for its deep-dive research and active stance in catalyst-driven situations.
Top Holdings
Equity Positions (3)
| Ticker | Security | Weight | Market Value | Shares | Avg Cost | Price | Change (QoQ) |
|---|---|---|---|---|---|---|---|
A ATS | ATS CORPORATION | 97.00% | $496.2M | 15,563,568 | $44.59 | $31.88 | +$108.2M |
C CCO | CLEAR CHANNEL OUTDOOR HLDGS | 2.25% | $11.5M | 9,828,401 | $1.74 | $1.17 | +$589.7K |
C CCIR | COHEN CIRCLE ACQUISITION CORP | 0.70% | $3.6M | 325,000 | $11.21 | $10.97 | -$78.0K |