Q4 2025 · 13F-HR
MASON CAPITAL MANAGEMENT LLCholdings as filed
Filed 2026-02-17 · accession 0001104659-26-016335
The Brief · MASON CAPITAL MANAGEMENT LLC · Q4 2025
AI · grounded in 13F
MASON CAPITAL MANAGEMENT LLC closed its entire position in Kenvue Inc KVUE, reducing exposure by $42.1M. The fund established a new position in Solstice Adv Materials Inc SOLS worth $30.8M and added JBS N.V. JBS with an investment of $18.8M. Additionally, the fund increased its stake in Brookdale Senior Living Inc BKD by 44.8% and opened new positions in Borr Drilling Ltd BORR and Ready Capital Corp RC.
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 00217Y104 | ATS | ATS CORPORATION | $428.6M | 76.3% | 15,563,568 | Common | SOLE |
| 112463104 | BKD | BROOKDALE SENIOR LIVING INC | $38.7M | 6.89% | 3,585,941 | Common | SOLE |
| 83443Q103 | SOLS | SOLSTICE ADV MATERIALS INC | $30.8M | 5.48% | 633,801 | Common | SOLE |
| 18453H106 | CCO | CLEAR CHANNEL OUTDOOR HLDGS | $21.7M | 3.87% | 9,828,401 | Common | SOLE |
| N4732M103 | JBS | JBS N.V. | $18.8M | 3.35% | 1,306,000 | Common | SOLE |
| G1466R173 | BORR | BORR DRILLING LTD | $8.8M | 1.57% | 2,182,136 | Common | SOLE |
| 75574U101 | RC | READY CAPITAL CORP | $8.2M | 1.47% | 3,776,139 | Common | SOLE |
| 59064R109 | MLAB | MESA LABORATORIES INC | $5.5M | 0.98% | 70,300 | Common | SOLE |
| 82669G104 | SBNY | SIGNATURE BANK | $404,000 | 0.07% | 400,000 | Common | SOLE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.