Latest JANA Partners Management, LP Stock Portfolio

$1.90Billion | No. of Holdings #10

JANA Partners Management, LP Performance

2026 Q2+15.35%

YTD+3.99%

2025-1.47%

About JANA Partners Management, LP and 13F Hedge Fund Stock Holdings

On 2026-08-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, JANA Partners Management, LP reported an equity portfolio of $1.9 Billions as of 30 Jun, 2026. <br><br> The top stock holdings of JANA Partners Management, LP are MRCY, COO, SPY. The fund has invested 25.5% of it's portfolio in MERCURY SYS INC and 13.5% of portfolio in COOPER COS INC. <br><br> The fund managers got completely rid off ENHABIT INC (EHAB) stocks. They significantly reduced their stock positions in FISERV INC, MERCURY SYS INC (MRCY) and STATE STR SPDR S&P 500 ETF T (SPY). JANA Partners Management, LP opened new stock positions in EVERPURE INC (PSTG). The fund showed a lot of confidence in some stocks as they added substantially to ALKAMI TECHNOLOGY INC (ALKT), LAMB WESTON HLDGS INC (LW) and MARKEL GROUP INC (MKL).

JANA Partners Management, LP Equity Portfolio Value

Last Reported on: 14 Aug, 2026

$1.90Billion

as of Aug 14, 2026

JANA Partners Management, LP Annual Return Estimates Vs S&P 500

Our best estimate is that JANA Partners Management, LP made a return of 15.35% in the last quarter. In trailing 12 months, it's portfolio return was 8.61%.

Performance
S&P 500

New Buys

Ticker	$ Bought
everpure inc	77,938,800

New stocks bought by JANA Partners Management, LP

Additions

Ticker	% Inc.
alkami technology inc	24.24
lamb weston hldgs inc	7.71
markel group inc	1.91
cooper cos inc	0.49
rapid7 inc	0.09

Additions to existing portfolio by JANA Partners Management, LP

Reductions

Ticker	% Reduced
fiserv inc	-17.44
mercury sys inc	-3.62
state str spdr s&p 500 etf t	-0.2

JANA Partners Management, LP reduced stake in above stock

Sold off

Ticker	$ Sold
enhabit inc	-29,453,900

JANA Partners Management, LP got rid off the above stocks

Sector Distribution

JANA Partners Management, LP has about 27.5% of it's holdings in Others sector.

Others
Industrials
Healthcare
Technology
Consumer Defensive
Financial Services

Sector	%
Others	27.5
Industrials	25.5
Healthcare	13.5
Technology	13.4
Consumer Defensive	12.2
Financial Services	7.9

Market Cap. Distribution

JANA Partners Management, LP has about 25.5% of it's portfolio invested in the large-cap and mega-cap stocks.

MID-CAP
UNALLOCATED
LARGE-CAP
SMALL-CAP
MEGA-CAP

Category	%
MID-CAP	37.7
UNALLOCATED	27.5
LARGE-CAP	21.4
SMALL-CAP	9.3
MEGA-CAP	4.1

Stocks belong to which Index?

About 35% of the stocks held by JANA Partners Management, LP either belong to S&P 500 or RUSSELL 2000 index.

Others
S&P 500
RUSSELL 2000

Index	%
Others	64.9
S&P 500	25.7
RUSSELL 2000	9.3

Top 5 Winners (%)		%
MRCY	mercury sys inc	66.6 %
RPD	rapid7 inc	47.0 %
	six flags entertainment corp	20.0 %
SPY	state str spdr s&p 500 etf t	14.8 %
ALKT	alkami technology inc	13.9 %

Top 5 Winners ($)		$
MRCY	mercury sys inc	199.3 M
SPY	state str spdr s&p 500 etf t	33.1 M
RPD	rapid7 inc	17.5 M
ALKT	alkami technology inc	14.9 M
	six flags entertainment corp	14.6 M

Top 5 Losers (%)		%
	fiserv inc	-11.0 %

Top 5 Losers ($)		$
	fiserv inc	-27.3 M

JANA Partners Management, LP Holdings Map

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

Current Stock Holdings of JANA Partners Management, LP

JANA Partners Management, LP has 10 stocks in it's portfolio. proved to be the most loss making stock for the portfolio. MRCY was the most profitable stock for JANA Partners Management, LP last quarter.

$1.90BTotal Value

11.00Positions

14 Aug, 2026Last Reported

Current holdings of Current Stock Holdings of JANA Partners Management, LP, 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
ALKT Alkami Technology Inc Alkami Technology IncALKT JANA Partners Management, LP's holding in Alkami Technology Inc over time	6.43%	6,747,710	$122.27M 6.43%	increased 24.24 percentadded

COO Cooper Cos Inc Cooper Cos IncCOO JANA Partners Management, LP's holding in Cooper Cos Inc over time	13.51%	3,582,480	$256.90M 13.51%	increased 0.49 percentadded

EHAB Enhabit Inc Enhabit IncEHAB JANA Partners Management, LP's holding in Enhabit Inc over time	0%	0.00	$0.00 0%	decreased 100 percentsold off

LW Lamb Weston Hldgs Inc Lamb Weston Hldgs IncLW JANA Partners Management, LP's holding in Lamb Weston Hldgs Inc over time	12.24%	5,394,640	$232.94M 12.24%	increased 7.71 percentadded

MKL Markel Group Inc Markel Group IncMKL JANA Partners Management, LP's holding in Markel Group Inc over time	7.88%	76,743	$149.88M 7.88%	increased 1.91 percentadded

MRCY Mercury Sys Inc Mercury Sys IncMRCY JANA Partners Management, LP's holding in Mercury Sys Inc over time	25.46%	3,958,850	$484.29M 25.46%	decreased 3.62 percentreduced

PSTG Everpure Inc Everpure IncPSTG JANA Partners Management, LP's holding in Everpure Inc over time	4.1%	989,196	$77.94M 4.1%	new position

RPD Rapid7 Inc Rapid7 IncRPD JANA Partners Management, LP's holding in Rapid7 Inc over time	2.87%	6,749,940	$54.67M 2.87%	increased 0.09 percentadded

SPY State Str Spdr S&P 500 Etf T State Str Spdr S&P 500 Etf T SPY JANA Partners Management, LP's holding in State Str Spdr S&P 500 Etf T over time	13.46%	342,965	$256.12M 13.46%	decreased 0.2 percentreduced

Com Fiserv Inc Fiserv Inc JANA Partners Management, LP's holding in Fiserv Inc over time	9.44%	3,662,080	$179.63M 9.44%	decreased 17.44 percentreduced

Com Six Flags Entertainment Corp Six Flags Entertainment Corp JANA Partners Management, LP's holding in Six Flags Entertainment Corp over time	4.61%	4,116,100	$87.67M 4.61%	unchanged 0 percentunchanged