MASON CAPITAL MANAGEMENT LLC - Portfolio Stock Holdings

MASON CAPITAL MANAGEMENT LLC disclosed 11 stock positions in a recent SEC 13F filing. $612,852,906 of stock holdings were filed, with the largest holdings including ATS, NVRI, and BKD. This filing represented positions held on March 31, 2026, and was filed on May 15, 2026.

We estimate the fund has a total AUM of $2,237,452,245 and has 15 employees, per a recent ADV filing. Most of the fund’s AUM appears to come from pooled investment vehicles.