Mason Capital Management LLC
Net seller this quarter
$607M
8
-$32.4M
100.0%
Holdings
| Company | Value | % of portfolio | % of company | POSITION CHANGE qoq % | First reported |
|---|---|---|---|---|---|
| Q2 2026 | |||||
 ATS | $472M | 77.78% | 16.72% | Not reported | Q2 2023 |
 BKD | $41.4M | 6.83% | 1.08% | +15.3% | Q3 2025 |
 NVRI | $38.9M | 6.40% | 6.30% | -60.6% | Q1 2026 |
 CCO | $23.8M | 3.92% | 1.93% | Not reported | Q2 2013 |
 GRPN | $15.8M | 2.60% | 1.62% | New | Q2 2026 |
 RC | $7.56M | 1.25% | 2.61% | Not reported | Q3 2024 |
 JELD | $4.66M | 0.77% | 3.59% | +300.3% | Q1 2026 |
| LOGC | $2.59M | 0.43% | 0.64% | New | Q2 2026 |
| Q1 2026 | |||||
| ATS | $463M | 75.48% | 16.72% | +5.4% | Q2 2023 |
| NVRI | $88.2M | 14.39% | Not reported | New | Q1 2026 |
| BKD | $30.6M | 4.99% | 0.94% | -37.7% | Q3 2025 |
| CCO | $23.3M | 3.80% | 1.97% | Not reported | Q2 2013 |
| RC | $7M | 1.14% | 2.61% | +14.4% | Q3 2024 |
| JELD | $963K | 0.16% | 0.90% | New | Q1 2026 |
| Q4 2025 | |||||
| ATS | $429M | 76.32% | 16.06% | Not reported | Q2 2023 |
| BKD | $38.7M | 6.89% | 1.51% | +44.8% | Q3 2025 |
 SOLS | $30.8M | 5.48% | 0.40% | New | Q4 2025 |
| CCO | $21.7M | 3.87% | 1.98% | Not reported | Q2 2013 |
 JBS | $18.8M | 3.35% | Not reported | New | Q4 2025 |
 BORR | $8.79M | 1.57% | 0.71% | New | Q4 2025 |
| RC | $8.23M | 1.47% | 2.32% | Not reported | Q3 2024 |
 MLAB | $5.52M | 0.98% | 1.27% | Not reported | Q3 2025 |
| Q3 2025 | |||||
| ATS | $408M | 82.99% | 16.06% | Not reported | Q2 2023 |
 KVUE | $42.1M | 8.57% | 0.14% | New | Q3 2025 |
| BKD | $21M | 4.27% | 1.04% | New | Q3 2025 |
| CCO | $15.5M | 3.16% | 1.98% | Not reported | Q2 2013 |
| MLAB | $4.71M | 0.96% | 1.28% | New | Q3 2025 |