Mason Capital Management Llc Portfolio Stock Holdings
According to the SEC 13F filed on August 14, 2026, Mason Capital Management Llc disclosed 9 stock positions valued at approximately $607.02M as of quarter-end June 30, 2026. The largest holdings include ATS CORPORATION, BROOKDALE SENIOR LIVING INC, and ENVIRI CORP.
- Report Period
- June 30, 2026
- No. of Stocks
- 9
- Portfolio Value
- $607.02M
Holdings by Sector
Mason Capital Management Llc Portfolio Holdings in Q2 2026
| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| ATS CORPORATION | ATS | Industrials | 77.78% | 16,404,170 | - | - | $472,112,013 |
| BROOKDALE SENIOR LIVING INC | BKD | Healthcare | 6.83% | 2,575,826 | +342,085 | +15.31% | $41,445,040 |
| ENVIRI CORP | NVRI | Industrials | 6.40% | 1,770,959 | -2,723,577 | -60.60% | $38,872,550 |
| CLEAR CHANNEL OUTDOOR HLDGS | CCO | Communication Services | 3.92% | 9,828,401 | - | - | $23,784,730 |
| GROUPON INC | GRPN | Communication Services | 2.60% | 657,144 | +657,144 | +100.00% | $15,810,885 |
| READY CAPITAL CORP | RC | Real Estate | 1.25% | 4,319,933 | - | - | $7,559,883 |
| JELD-WEN HOLDING INC | JELD | Industrials | 0.77% | 3,109,621 | +2,332,736 | +300.27% | $4,664,432 |
| CONTEXTLOGIC HOLDINGS INC | LOGC | Other | 0.43% | 291,341 | +291,341 | +100.00% | $2,592,935 |
| SIGNATURE BANK | SBNY | Other | 0.03% | 400,000 | - | - | $180,000 |
Showing 9 of 9 holdings in the latest reporting period.