13F Insight
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DOSSIER · 13F-HR · Q1 2026

MASON CAPITAL MANAGEMENT LLC

$613M in tracked AUM across 7 positions as of Q1 2026.

MC
CIK 0001218735 · last filed Mar 31, 2026
Total AUM
$613M
as of Q1 2026
Holdings
7
—
positions
Whale Score
73
73
strong
Activity
—
no data
changes this Q

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
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