MASON CAPITAL MANAGEMENT LLC - Portfolio Stock Holdings

MASON CAPITAL MANAGEMENT LLC disclosed 8 stock positions in a recent SEC 13F filing. $604,429,532 of stock holdings were filed, with the largest holdings including ATS, BKD, and NVRI. This filing represented positions held on June 30, 2026, and was filed on Aug. 14, 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.