MASON CAPITAL MANAGEMENT LLC

CIK 0001218735 · Q2 2026

13F Equity AUM

$607.0M

-0.9% QoQ

Positions

+2 QoQ

AUM Rank

#4,435

Top 35%

Skill Alpha (FF)

-12.0%/yr^ns

No Clear Edge

Rank #8,132 · Top 98%

vs S&P -15.7%/yr (unadj.)

Quarters Tracked

~13 years

Portfolio Concentration

Top 5: 97.5%Top 10: 100.0%Top 20: 100.0%

ATS77.8%

B7S6.8%

NVRI6.4%

CCO3.9%

GRPN2.6%

RC1.3%

JELD0.8%

LOGC0.4%

TQJ0.0%

HHI (Herfindahl-Hirschman Index) measures portfolio concentration. Low (<1500) = diversified, Moderate (1500-2500), High (>2500) = concentrated bets.

Sector Allocation

Industrials85.0%

Healthcare6.8%

Communication Services6.5%

Other1.7%

Portfolio weight by GICS sector based on latest 13F filing. Sectors below 2% are grouped as “Other.”

Position Sizing

Positions: 9Median: 2.60%Avg: 11.11%

0–0.5%

2(0.5%)

0.5–1%

1(0.8%)

1–3%

2(3.9%)

3–5%

1(3.9%)

5%+

3(91.0%)

Count of positions per weight bucket — (%) = combined portfolio weight

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Portfolio Overlap

Shared: 0Unique: 9vs 20 funds

0%Low

Fund positions

Consensus CUSIPs

Jaccard similarity of this fund’s portfolio vs the consensus of top 20 funds by AUM. Low (<15%) = contrarian, Moderate (15-40%), High (>40%) = follows the crowd.

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Position Changes This Quarter

New2Increased2Decreased1Exited0

New Positions

GRPN2.6%

+657K

LOGC0.4%

+291K

Increased

JELD0.8%

+2.3M(+300%)

B7S6.8%

+342K(+15%)

Decreased

NVRI6.4%

-2,723,577(-61%)

Quarter-over-quarter changes compared to prior 13F filing. New = first appearance; Exited = no longer held.

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Holdings

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