Q3 2025 · 13F-HR
MASON CAPITAL MANAGEMENT LLCholdings as filed
Filed 2025-11-14 · accession 0001104659-25-111862
$491.4M
Reported value
6
Positions
2025-09-30
Period end
The Brief · MASON CAPITAL MANAGEMENT LLC · Q3 2025
AI · grounded in 13F
MASON CAPITAL MANAGEMENT LLC established a new position in ATS valued at $407.8M. The fund also initiated new stakes in KVUE for $42.1M and BKD for $21M. Additional new positions include CCO, MLAB, and SBNY.
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 00217Y104 | ATS | ATS CORPORATION | $407.8M | 83.0% | 15,563,568 | Common | SOLE |
| 49177J102 | KVUE | KENVUE INC | $42.1M | 8.57% | 2,595,000 | Common | SOLE |
| 112463104 | BKD | BROOKDALE SENIOR LIVING INC | $21.0M | 4.27% | 2,475,964 | Common | SOLE |
| 18453H106 | CCO | CLEAR CHANNEL OUTDOOR HLDGS | $15.5M | 3.16% | 9,828,401 | Common | SOLE |
| 59064R109 | MLAB | MESA LABORATORIES INC | $4.7M | 0.96% | 70,300 | Common | SOLE |
| 82669G104 | SBNY | SIGNATURE BANK | $260,000 | 0.05% | 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.