Mason Capital Management
Latest statistics and disclosures from Mason Capital Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are ATS, KVUE, BKD, CCO, MLAB, and represent 99.95% of Mason Capital Management's stock portfolio.
- Added to shares of these 3 stocks: KVUE (+$42M), BKD (+$21M), MLAB.
- Started 3 new stock positions in MLAB, KVUE, BKD.
- Reduced shares in these 1 stock: CCIR.
- Sold out of its position in CCIR.
- Mason Capital Management was a net buyer of stock by $64M.
- Mason Capital Management has $491M in assets under management (AUM), dropping by -3.94%.
- Central Index Key (CIK): 0001218735
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Portfolio Holdings for Mason Capital Management
Mason Capital Management holds 6 positions in its portfolio as reported in the September 2025 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Ats (ATS) | 83.0 | $408M | 16M | 26.20 |
|
|
| Kenvue (KVUE) | 8.6 | $42M | NEW | 2.6M | 16.23 |
|
| Brookdale Senior Living (BKD) | 4.3 | $21M | NEW | 2.5M | 8.47 |
|
| Clear Channel Outdoor Holdings (CCO) | 3.2 | $16M | 9.8M | 1.58 |
|
|
| Mesa Laboratories (MLAB) | 1.0 | $4.7M | NEW | 70k | 67.01 |
|
| Signature Bank (SBNY) | 0.1 | $260k | 400k | 0.65 |
|
Past Filings by Mason Capital Management
SEC 13F filings are viewable for Mason Capital Management going back to 2010
- Mason Capital Management 2025 Q3 filed Nov. 14, 2025
- Mason Capital Management 2025 Q2 filed Aug. 14, 2025
- Mason Capital Management 2025 Q1 filed May 15, 2025
- Mason Capital Management 2024 Q4 filed Feb. 14, 2025
- Mason Capital Management 2024 Q3 filed Nov. 14, 2024
- Mason Capital Management 2024 Q2 filed Aug. 14, 2024
- Mason Capital Management 2024 Q1 filed May 15, 2024
- Mason Capital Management 2023 Q4 filed Feb. 15, 2024
- Mason Capital Management 2023 Q3 filed Nov. 14, 2023
- Mason Capital Management 2023 Q2 filed Aug. 14, 2023
- Mason Capital Management 2023 Q1 filed May 15, 2023
- Mason Capital Management 2022 Q4 filed Feb. 14, 2023
- Mason Capital Management 2022 Q3 filed Nov. 14, 2022
- Mason Capital Management 2022 Q2 filed Aug. 15, 2022
- Mason Capital Management 2022 Q1 filed May 16, 2022
- Mason Capital Management 2021 Q4 filed Feb. 14, 2022