MASON CAPITAL MANAGEMENT LLC
CIK 0001218735
Annualised vol
2.74699%
Beta
0.026967
HHI
6161.044703
Top-10 weight
100.0%
VaR 95%
0.187039%
VaR 99%
0.585069%
Max drawdown
7.481489%
Matched value
17.849881%
Returns of reported holdings
Loading returns…
Position changes vs prior quarter
What the latest 13F shows bought and sold against the quarter before, by share count.
| Ticker | Change | Shares now | Shares before | Share change % | Value now ($) |
|---|---|---|---|---|---|
| BKD | ADDED | 2,575,826 | 2,233,741 | 15.31% | 41,445,040 |
| NVRI | REDUCED | 1,770,959 | 4,494,536 | -60.6% | 38,872,550 |
| GRPN | NEW | 657,144 | - | - | 15,810,885 |
| RC | UNCHANGED | 4,319,933 | 4,319,933 | 0.0% | 7,559,883 |
| JELD | ADDED | 3,109,621 | 776,885 | 300.27% | 4,664,432 |
| LOGC | NEW | 291,341 | - | - | 2,592,935 |
Holdings (latest quarter)
| Ticker | Change | Issuer | Class | CUSIP | Value ($) | Weight % | Shares |
|---|---|---|---|---|---|---|---|
| - | ATS CORPORATION | COM | 00217Y104 | 472,112,013 | 77.78 | 1.640417E7 | |
| BKD | ADDED | BROOKDALE SENIOR LIVING INC | COM | 112463104 | 41,445,040 | 6.83 | 2575826.0 |
| NVRI | REDUCED | ENVIRI CORP | COM | 415864107 | 38,872,550 | 6.4 | 1770959.0 |
| - | CLEAR CHANNEL OUTDOOR HLDGS | COM | 18453H106 | 23,784,730 | 3.92 | 9828401.0 | |
| GRPN | NEW | GROUPON INC | COM | 399473206 | 15,810,885 | 2.6 | 657144.0 |
| RC | UNCHANGED | READY CAPITAL CORP | REIT | 75574U101 | 7,559,883 | 1.25 | 4319933.0 |
| JELD | ADDED | JELD-WEN HOLDING INC | COM | 47580P103 | 4,664,432 | 0.77 | 3109621.0 |
| LOGC | NEW | CONTEXTLOGIC HOLDINGS INC | COM | 21078F109 | 2,592,935 | 0.43 | 291341.0 |
| - | SIGNATURE BANK | COM | 82669G104 | 180,000 | 0.03 | 400000.0 |
Quarterly portfolios
| Period | Filed | Value ($) | Positions | Vol % | Beta | Max DD % |
|---|---|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | 607,022,468 | 9 | 2.74699 | 0.026967 | 7.481489 |
| 2026-03-31 | 2026-05-15 | 612,852,905 | 7 | 3.713026 | 0.036475 | 13.027054 |
| 2025-12-31 | 2026-02-17 | 561,604,846 | 9 | 1.508238 | 0.009564 | 3.689899 |
| 2025-09-30 | 2025-11-14 | 491,353,424 | 6 | 1.405869 | 0.007964 | 3.941788 |
| 2025-03-31 | 2025-05-15 | 427,192,325 | 5 | |||
| 2024-12-31 | 2025-02-14 | 470,516,744 | 4 | 0.037753 | 1.4E-4 | 0.120635 |