Mason Capital Management LLC 13F Holdings · Q2 2026
Mason Capital Management LLC reported 9 securities worth $607.02M in its SEC 13F filing for Q2 2026 (period ended 2026-06-30). Top holdings: ATS (77.78%), BKD (6.83%), NVRI (6.40%). Among its top 25 positions this quarter: 2 new, 2 added, 1 trimmed.
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | ATS | ATS CORPORATION | $472.1M | 77.78% | 16.4M | Hold |
| 2 | BKD | BROOKDALE SENIOR LIVING INC | $41.4M | 6.83% | 2.6M | Added |
| 3 | NVRI | ENVIRI CORP | $38.9M | 6.40% | 1.8M | Trimmed |
| 4 | CCO | CLEAR CHANNEL OUTDOOR HLDGS | $23.8M | 3.92% | 9.8M | Hold |
| 5 | GRPN | GROUPON INC | $15.8M | 2.60% | 657,144 | New |
| 6 | RC | READY CAPITAL CORP | $7.6M | 1.25% | 4.3M | Hold |
| 7 | JELD | JELD-WEN HOLDING INC | $4.7M | 0.77% | 3.1M | Added |
| 8 | LOGCD | CONTEXTLOGIC HOLDINGS INC | $2.6M | 0.43% | 291,341 | New |
| 9 | SBNY | SIGNATURE BANK | $180,000 | 0.03% | 400,000 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30
Every position in this 13F-HR, with its change from the prior quarter.
13F holdings, latest quarter
SourceSEC EDGAR13F-HR