JANA Partners Management, LP

CIK

1998597

Location

NEW YORK, NY

Portfolio Value

Mid $1,667,513,905

Diversification

Diversified

Filing Date

Global Rank

#1,327 / 8,603 ▼ 30 · as of Mar 2026

Top Industry

Aerospace & Defense 25.0%

3Y Alpha vs SPY

-1.4%

Period ended 3 months ago

Filed Jun 30, 2026 · 9d

10 quarters · since Dec 2023

Clone Performance

Feb 2024–Jul 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+44.2%

SPY

+53.6%

Annualised alpha

-3.1%

Max drawdown

−21.2%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

11 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

18.0%

−2.3 pts

Top 5

74.2%

+1.2 pts

Top 10

98.2%

−0.7 pts

HHI

1,259

Diversified−34

Portfolio Trend

10 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Unclassified	28.2%	$471,005,855	2
Industrials	18.0%	$299,472,283	1
Healthcare	17.1%	$284,362,702	2
Consumer Defensive	12.7%	$211,664,915	1
Technology	11.0%	$183,804,532	3
Financial Services	8.6%	$144,142,861	1
Consumer Cyclical	4.4%	$73,060,757	1

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

3 positions

Ticker	Company	Δ Shares	Shares	Value
FISV	Fiserv Inc	+2,190,085	4,435,605	$247,506,759
ALKT	Alkami Technology, Inc.	+536,723	5,431,388	$85,109,849
COO	Cooper Companies, Inc.	+45,538	3,565,158	$254,908,797
No positions match the current search.

Trimmed

Positions the filer reduced

3 positions

Ticker	Company	Δ Shares	Shares	Value
MRCY	Mercury Systems Inc	−852,057	4,107,424	$299,472,283
SPY	Spdr S&P 500 ETF Trust	−47,672	343,665	$223,499,096
MKL	Markel Group Inc.	−5,912	75,307	$144,142,861
No positions match the current search.

New Positions

Positions the filer opened this quarter

1 positions

Ticker	Company	Shares	Value	Open
P	Everpure, Inc.	1,042,296	$61,537,155
No positions match the current search.

Sold Out

Positions the filer fully exited

1 positions

Ticker	Company	Shares	Value	Open
FRPT	Freshpet, Inc.	557,390	$33,961,772
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

11 positions · $1,667,513,905 total · as of Mar 31, 2026

All sectors Consumer Cyclical Consumer Defensive Financial Services Healthcare Industrials Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
MRCY	Mercury Systems Inc Industrials	Reduced	4,107,424	-852,057	$299,472,283	−17.3%	17.96%
COO	Cooper Companies, Inc. Healthcare	Added	3,565,158	+45,538	$254,908,797	−11.6%	15.29%
FISV	Fiserv Inc	Added	4,435,605	+2,190,085	$247,506,759	+64.1%	14.84%
SPY	Spdr S&P 500 ETF Trust	Reduced	343,665	-47,672	$223,499,096	−16.2%	13.40%
LW	Lamb Weston Holdings, Inc. Consumer Defensive	Held	5,008,635	0	$211,664,915	+0.9%	12.69%
MKL	Markel Group Inc. Financial Services	Reduced	75,307	-5,912	$144,142,861	−17.4%	8.64%
ALKT	Alkami Technology, Inc. Technology	Added	5,431,388	+536,723	$85,109,849	−24.6%	5.10%
FUN	Six Flags Entertainment Corporation/NEW Consumer Cyclical	Held	4,116,099	0	$73,060,757	+15.7%	4.38%
P	Everpure, Inc. Technology	NEW	1,042,296	NEW	$61,537,155	NEW	3.69%
RPD	Rapid7, Inc. Technology	Held	6,743,653	0	$37,157,528	−63.7%	2.23%
EHAB	Enhabit, Inc. Healthcare	Held	2,090,412	0	$29,453,905	+52.8%	1.77%