JANA Partners Management, LP

CIK

1998597

Location

NEW YORK, NY

Portfolio Value

Mid $1,638,060,000

Diversification

Diversified

Filing Date

Global Rank

#1,255 / 8,636 ▼ 35 · as of Mar 2026

Top Industry

Aerospace & Defense 25.7%

3Y Alpha vs SPY

-3.2%

Period ended 4 months ago

Filed Jun 30, 2026 · 37d

10 quarters · since Dec 2023

Clone Performance

Feb 2024–Aug 2026 · vs SPY

Hypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.

Cloned portfolio

+49.1%

SPY

+59.1%

Annualised alpha

-3.1%

Max drawdown

−21.4%

Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. It tracks 98% of reported value on average across 10 quarters. Past performance does not predict future results.

Portfolio Concentration

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

Top Position

18.3%

−2.2 pts

Top 5

75.5%

+1.8 pts

Top 10

100.0%

0.0 pts

HHI

1,301

Diversified−18

Portfolio Trend

10 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Unclassified	28.8%	$471,005,855	2
Industrials	18.3%	$299,472,283	1
Healthcare	15.6%	$254,908,797	2
Consumer Defensive	12.9%	$211,664,915	1
Technology	11.2%	$183,804,532	3
Financial Services	8.8%	$144,142,861	1
Consumer Cyclical	4.5%	$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 tracked positions · $1,638,060,000 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%	18.28%
COO	Cooper Companies, Inc. Healthcare	Added	3,565,158	+45,538	$254,908,797	−11.6%	15.56%
FISV	Fiserv Inc	Added	4,435,605	+2,190,085	$247,506,759	+64.1%	15.11%
SPY	Spdr S&P 500 ETF Trust	Reduced	343,665	-47,672	$223,499,096	−16.2%	13.64%
LW	Lamb Weston Holdings, Inc. Consumer Defensive	Held	5,008,635	0	$211,664,915	+0.9%	12.92%
MKL	Markel Group Inc. Financial Services	Reduced	75,307	-5,912	$144,142,861	−17.4%	8.80%
ALKT	Alkami Technology, Inc. Technology	Added	5,431,388	+536,723	$85,109,849	−24.6%	5.20%
FUN	Six Flags Entertainment Corporation/NEW Consumer Cyclical	Held	4,116,099	0	$73,060,757	+15.7%	4.46%
P	Everpure, Inc. Technology	NEW	1,042,296	NEW	$61,537,155	NEW	3.76%
RPD	Rapid7, Inc. Technology	Held	6,743,653	0	$37,157,528	−63.7%	2.27%
EHAB	Enhabit, Inc. Healthcare	Held	2,090,412	0	$0	—	0.00%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.