Mason Capital Management is based out of New York. Mason Capital Management is a hedge fund with 4 clients and discretionary assets under management (AUM) of $1,957,596,252 (Form ADV from 2024-03-29). Their last reported 13F filing for Q4 2024 included $470,516,744 in managed 13F securities
and a top 10 holdings concentration of 100.0%. Mason Capital Management's largest holding is ATS Corporation with shares held of 14,914,765. Whalewisdom has at least 107 13F filings, 17 13D filings, 61 13G filings, and 5 Form 4 filings
Business Description
The Investment Manager provides ongoing strategic and capital markets advisory services to portfolio companies in exchange for an annual fee paid to the Master Fund. This includes services like capital introduction, consulting on technology, operations, equipment, or office space, and execution of portfolio transactions. The Investment Manager does not separately compensate any broker or dealer for these services.
Employees of the Investment Manager may also serve as directors or advisory board members of other portfolio companies or entities, including special purpose acquisition companies. In these cases, they may receive directors' fees or other compensation for their services.
Investment Strategy
The Investment Manager may modify the investment strategies of the Funds without prior notice to investors if they believe it is in the best interest of the Fund. These modifications could lead to additional risks not previously disclosed, which could be substantial. The Investment Manager is not required to take a diversified investment approach, and therefore significant portions of the Funds' assets may be concentrated in a small number of strategies, issuers, geographic regions, or industries. This concentration could make the Funds more susceptible to fluctuations in value due to adverse economic and business conditions.
In 2021, investors were notified that the Master Fund's net asset value had become overly concentrated in a particular long-held investment. Investors were given the opportunity to reduce or maintain their exposure to this investment. Those who chose to reduce their exposure had their positions assumed by Mr. Martino and Mr. Garschina, who also reduced their exposure to the rest of the portfolio by the same amount. This resulted in differing economic interests between Mr. Martino and Mr. Garschina and other investors. Due to varying levels of economic exposure to certain investments, the availability and use of margin or other leverage within the portfolio may be disproportionate.
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2024-12-31
Top Buys (13F)
Name | % Change |
---|

2024-12-31
Top Sells (13F)
Name | % Change |
---|---|
MDRX Veradigm Inc | 4.82% |
B Barnes Group Inc | 4.41% |
RC Ready Capital Corp | 0.87% |

2024-12-31
13F Holdings Summary
Name | $ Change |
---|---|
ATS ATS Corporation | 96.62% |
CCO Clear Channel Outdoo | 2.86% |
RC Ready Capital Corp | 0.4% |
SBNY Signature Bank | 0.12% |

2024-12-31
13F Activity
Market Value | $471m, Prior: $0.50b |
Inflows (Outflows) as % of Total MV | (-10.0438)% |
New Purchases | 0 stocks |
Added To | 0 stocks |
Sold out of | 2 stocks |
Reduced holdings in | 1 stocks |
Top 10 Holdings % | 100% |
Turnover %[1] | 33.33% |
Turnover Alt %[2] | 0% |
Time Held Top 20 | 8 quarters |
Time Held Top 10 | 8 quarters |
Time Held All | 8 quarters |
[1]: Turnover is calculated by taking the # of new holdings (initial purchases) + the # of positions sold out of (not just reduced) divided by the total # of holdings for the quarter.
[2]: Alt Turnover is calculated by taking either the total MV of new purchases or the MV of securities sold, whichever is less, divided by the total MV of the fund.

2024-12-31
13F Sector Allocation Over Time
limited to past 4 quarters. Subscribe to see all available data

2024-12-31
Analysis

Top 20 equal-weighted holdings. Performance numbers calculated through 2024-12-31