Latest MASON CAPITAL MANAGEMENT LLC Stock Portfolio

$607Million | No. of Holdings #9

MASON CAPITAL MANAGEMENT LLC Performance

2026 Q2+3.77%

YTD+6.84%

2025-4.06%

About MASON CAPITAL MANAGEMENT LLC and 13F Hedge Fund Stock Holdings

MASON CAPITAL MANAGEMENT LLC is a hedge fund based in New York, NY. On 2026-08-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, MASON CAPITAL MANAGEMENT LLC reported an equity portfolio of $607 Millions as of 30 Jun, 2026. <br><br> The top stock holdings of MASON CAPITAL MANAGEMENT LLC are , BKD, . The fund has invested 77.8% of it's portfolio in ATS CORPORATION and 6.8% of portfolio in BROOKDALE SENIOR LIVING INC. <br><br> They significantly reduced their stock positions in ENVIRI CORP. MASON CAPITAL MANAGEMENT LLC opened new stock positions in GROUPON INC (GRPN) and CONTEXTLOGIC HOLDINGS INC. The fund showed a lot of confidence in some stocks as they added substantially to JELD-WEN HOLDING INC (JELD) and BROOKDALE SENIOR LIVING INC (BKD).

MASON CAPITAL MANAGEMENT LLC Equity Portfolio Value

Last Reported on: 14 Aug, 2026

$607Million

as of Aug 14, 2026

MASON CAPITAL MANAGEMENT LLC Annual Return Estimates Vs S&P 500

Our best estimate is that MASON CAPITAL MANAGEMENT LLC made a return of 3.77% in the last quarter. In trailing 12 months, it's portfolio return was -2.76%.

Performance
S&P 500

New Buys

Ticker	$ Bought
groupon inc	15,810,900
contextlogic holdings inc	2,592,940

New stocks bought by MASON CAPITAL MANAGEMENT LLC

Additions

Ticker	% Inc.
jeld-wen holding inc	300
brookdale senior living inc	15.31

Additions to existing portfolio by MASON CAPITAL MANAGEMENT LLC

Reductions

Ticker	% Reduced
enviri corp	-60.6

MASON CAPITAL MANAGEMENT LLC reduced stake in above stock

Sold off

None of the stocks were completely sold off by MASON CAPITAL MANAGEMENT LLC

Sector Distribution

MASON CAPITAL MANAGEMENT LLC has about 84.6% of it's holdings in Others sector.

Others
Healthcare
Communication Services
Real Estate

Sector	%
Others	84.6
Healthcare	6.8
Communication Services	6.5
Real Estate	1.2

Market Cap. Distribution

MASON CAPITAL MANAGEMENT LLC has about 0% of it's portfolio invested in the large-cap and mega-cap stocks.

UNALLOCATED
MID-CAP
SMALL-CAP
MICRO-CAP

Category	%
UNALLOCATED	84.6
MID-CAP	6.8
SMALL-CAP	6.5
MICRO-CAP	2

Stocks belong to which Index?

About 12.8% of the stocks held by MASON CAPITAL MANAGEMENT LLC either belong to S&P 500 or RUSSELL 2000 index.

Others
RUSSELL 2000

Index	%
Others	87.2
RUSSELL 2000	12.8

Top 5 Winners (%)		%
BKD	brookdale senior living inc	16.3 %
JELD	jeld-wen holding inc	12.2 %
	enviri corp	8.3 %
RC	ready capital corp	8.0 %
CCO	clear channel outdoor hldgs	2.1 %

Top 5 Winners ($)		$
	ats corporation	9.5 M
	enviri corp	7.3 M
BKD	brookdale senior living inc	5.8 M
RC	ready capital corp	0.6 M
JELD	jeld-wen holding inc	0.5 M

Top 5 Losers (%)		%
	signature bank	-30.8 %

Top 5 Losers ($)		$
	signature bank	-0.1 M

MASON CAPITAL MANAGEMENT LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of MASON CAPITAL MANAGEMENT LLC

MASON CAPITAL MANAGEMENT LLC has 9 stocks in it's portfolio. proved to be the most loss making stock for the portfolio. was the most profitable stock for MASON CAPITAL MANAGEMENT LLC last quarter.

$607.02MTotal Value

9.00Positions

14 Aug, 2026Last Reported

Current holdings of Current Stock Holdings of MASON CAPITAL MANAGEMENT LLC, last reported on 14 Aug, 2026. Select a row with a linked ticker to view its historical trend.
Holdingsorted ascending	% Portfolio	Shares Held	$ Value	% Change
BKD Brookdale Senior Living Inc Brookdale Senior Living IncBKD MASON CAPITAL MANAGEMENT LLC's holding in Brookdale Senior Living Inc over time	6.83%	2,575,830	$41.45M 6.83%	increased 15.31 percentadded

CCO Clear Channel Outdoor Hldgs Clear Channel Outdoor HldgsCCO MASON CAPITAL MANAGEMENT LLC's holding in Clear Channel Outdoor Hldgs over time	3.92%	9,828,400	$23.78M 3.92%	unchanged 0 percentunchanged

GRPN Groupon Inc Groupon IncGRPN MASON CAPITAL MANAGEMENT LLC's holding in Groupon Inc over time	2.6%	657,144	$15.81M 2.6%	new position

JELD Jeld-Wen Holding Inc Jeld-Wen Holding IncJELD MASON CAPITAL MANAGEMENT LLC's holding in Jeld-Wen Holding Inc over time	0.77%	3,109,620	$4.66M 0.77%	increased 300.27 percentadded

RC Ready Capital Corp Ready Capital CorpRC MASON CAPITAL MANAGEMENT LLC's holding in Ready Capital Corp over time	1.25%	4,319,930	$7.56M 1.25%	unchanged 0 percentunchanged

Com Ats Corporation Ats Corporation MASON CAPITAL MANAGEMENT LLC's holding in Ats Corporation over time	77.78%	16,404,200	$472.11M 77.78%	unchanged 0 percentunchanged

Com Enviri Corp Enviri Corp MASON CAPITAL MANAGEMENT LLC's holding in Enviri Corp over time	6.4%	1,770,960	$38.87M 6.4%	decreased 60.6 percentreduced

Com Contextlogic Holdings Inc Contextlogic Holdings Inc MASON CAPITAL MANAGEMENT LLC's holding in Contextlogic Holdings Inc over time	0.43%	291,341	$2.59M 0.43%	new position

Com Signature Bank Signature Bank MASON CAPITAL MANAGEMENT LLC's holding in Signature Bank over time	0.03%	400,000	$180.0K 0.03%	unchanged 0 percentunchanged