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Mason Capital Management Llc

Portfolio Manager
Mason Capital Management LLC
Performance
+8.32% (2026 Q1)
AUM (13F)
$612.85M
# of Holdings
7
Performance Rank
Allocation (Top 20)
100%

Mason Capital Management Llc Holdings Map

Top 7 Mason Capital Management Llc Holdings

Top 10 holdings

StockCompany% Port.SharesValueActivityOwnershipAvg. CostDate
ATS
ATS CORPORATION
75.48%16.40M$462.6M
+5.40%(+840.60K)
2025-Q1: 15.56M shares2025-Q2: 15.56M shares2025-Q3: 15.56M shares2025-Q4: 15.56M shares2026-Q1: 16.40M shares
$41.37(-22.66%)
2026-03-31
NVRI
ENVIRI CORP
14.39%4.49M$88.2Mnew2025-Q1: 0 shares2025-Q2: 0 shares2025-Q3: 0 shares2025-Q4: 0 shares2026-Q1: 4.49M shares
$18.77(+3.30%)
2026-03-31
BKD
BROOKDALE SENIOR LIVING INC
4.99%2.23M$30.6M
-37.71%(-1.35M)
2025-Q1: 0 shares2025-Q2: 0 shares2025-Q3: 2.48M shares2025-Q4: 3.59M shares2026-Q1: 2.23M shares
$8.31(+56.96%)
2026-03-31
CCO
CLEAR CHANNEL OUTDOOR HLDGS
3.8%9.83M$23.3M
+0.00%(+0)
2025-Q1: 9.83M shares2025-Q2: 9.83M shares2025-Q3: 9.83M shares2025-Q4: 9.83M shares2026-Q1: 9.83M shares
$2.05(+16.58%)
2026-03-31
RC
READY CAPITAL CORP
1.14%4.32M$7.0M
+14.40%(+543.79K)
2025-Q1: 0 shares2025-Q2: 0 shares2025-Q3: 0 shares2025-Q4: 3.78M shares2026-Q1: 4.32M shares
$3.20(-45.91%)
2026-03-31
JELD
JELD-WEN HOLDING INC
0.16%776.9K$963Knew2025-Q1: 0 shares2025-Q2: 0 shares2025-Q3: 0 shares2025-Q4: 0 shares2026-Q1: 776.9K shares
$1.85(-20.54%)
2026-03-31
SBNY
SIGNATURE BANK
0.04%400.0K$260K
+0.00%(+0)
2025-Q1: 400.0K shares2025-Q2: 400.0K shares2025-Q3: 400.0K shares2025-Q4: 400.0K shares2026-Q1: 400.0K shares
$2.30(-74.35%)
2026-03-31

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