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MCM

Mason Capital Management Portfolio holdings

AUM $613M
1-Year Est. Return 21.43%
This Fund
S&P 500
This Quarter Est. Return
-16.11%
1 Year Est. Return
+21.43%
3 Year Est. Return
-17.99%
5 Year Est. Return
+51.94%
10 Year Est. Return
+270.99%
AUM
$427M
AUM Growth
-$43.3M
Cap. Flow
+$42.5M
Cap. Flow %
9.94%
Top 10 Hldgs %
100%
Holding
6
New
2
Increased
1
Reduced
–
Closed
1

Top Buys

Rank Stock Value
1
PARA
Paramount Global Class B
PARA
+$22.7M
2
ATS icon
ATS Corp
ATS
+$18.1M
3
CCIR
Cohen Circle Acquisition Corp. I Class A Ordinary Shares
CCIR
+$3.58M

Top Sells

Rank Stock Value
1
RC
Ready Capital
RC
+$1.9M

Sector Composition

Rank Sector Weight
1 Industrials 90.83%
2 Communication Services 8.23%
3 Financials 0.94%
4 Real Estate 0%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ATS icon
1
ATS Corp
ATS
$2.52B
$388M 90.83%
15,563,568
+648,803
+4% +$18.1M
PARA
2
DELISTED
Paramount Global Class B
PARA
$24.2M 5.68%
+2,027,408
New +$22.7M
CCO icon
3
Clear Channel Outdoor Holdings
CCO
$1.23B
$10.9M 2.55%
9,828,401
– –
CCIR
4
DELISTED
Cohen Circle Acquisition Corp. I Class A Ordinary Shares
CCIR
$3.64M 0.85%
+325,000
New +$3.58M
SBNY
5
DELISTED
Signature Bank
SBNY
$392K 0.09%
400,000
– –
RC
6
Ready Capital
RC
$258M
– –
-278,856
Closed -$1.9M

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PSP
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CT
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1SAMC
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VV
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DTL
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CIP
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Mason Capital Management's Q1 2025 Portfolio in Review

As of Q1 2025, Mason Capital Management held 6 positions worth $427M, down 9.2% from $471M the previous quarter. Its ten largest holdings account for 100% of the portfolio.

Mason Capital Management deployed $42.5M of net new capital in Q1 2025, opening 2 new positions and adding to 1 existing holding. Its largest new stake was Paramount Global Class B: 2,027,408 shares worth $24.2M.

By sector, the portfolio is most concentrated in Industrials at 91% of assets, down from 97% a quarter earlier, followed by Communication Services and Financials.

On the sell side, the most notable exit was Ready Capital, an estimated $1.9M sold.

  • Mason Capital Management's largest Q1 2025 buy was Paramount Global Class B: 2,027,408 shares worth $24.2M.
  • Mason Capital Management added most to ATS Corp in Q1 2025, an estimated $18.1M increase.
  • Mason Capital Management fully exited Ready Capital in Q1 2025, selling an estimated $1.9M.
  • Mason Capital Management's ten largest holdings make up 100% of its $427M portfolio in Q1 2025.
  • Mason Capital Management opened 2 new positions and closed 1 in Q1 2025.
  • Mason Capital Management's portfolio value fell 9.2% quarter-over-quarter to $427M.

Based on Mason Capital Management's 13F filing for Q1 2025, filed 15 May 2025.