Mason Capital Management Llc Portfolio Stock Holdings
Mason Capital Management Llc disclosed 7 stock positions valued at approximately $612.9 million in its latest SEC 13F filing. The largest holdings include ATS CORPORATION, ENVIRI CORP, and BROOKDALE SENIOR LIVING INC. The filing reflects positions held as of March 31, 2026 and was filed on May 15, 2026.
- Report Period
- March 31, 2026
- No. of Stocks
- 7
- Portfolio Value
- $612.9M
Holdings by Sector
Mason Capital Management Llc Portfolio Holdings in Q1 2026
6 holdings in the latest reporting period.
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| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| ATS CORPORATION | ATS | Industrials | 75.48% | 16,404,170 | +840,602 | +5.40% | $462,597,594 |
| ENVIRI CORP | NVRI | Industrials | 14.39% | 4,494,536 | +4,494,536 | +100.00% | $88,182,796 |
| BROOKDALE SENIOR LIVING INC | BKD | Healthcare | 4.99% | 2,233,741 | -1,352,200 | -37.71% | $30,557,577 |
| CLEAR CHANNEL OUTDOOR HLDGS | CCO | Communication Services | 3.80% | 9,828,401 | - | - | $23,293,310 |
| READY CAPITAL CORP | RC | Real Estate | 1.14% | 4,319,933 | +543,794 | +14.40% | $6,998,291 |
| JELD-WEN HOLDING INC | JELD | Industrials | 0.16% | 776,885 | +776,885 | +100.00% | $963,337 |