JANA Partners Management, LP — 13F Holdings

2026 Q2  ·  11 Positions

2026 Q2 Portfolio Activity

In 2026 Q2, JANA Partners Management, LP maintained a portfolio of 11 distinct positions. The most significant new addition was EVERPURE INC, now representing 4.10% of the total fund value. They heavily accumulated shares in ALKAMI TECHNOLOGY INC, increasing the position by 24.2%. Conversely, JANA Partners Management, LP completely exited their position in ENHABIT INC.
Position History hover any row below to update
Loading…
PCA Score Concentration Risk
Risk ENB
Total Positions
11
Quarter
2026 Q2
Top Holding
MRCY (25.5%)
Top 10 Concentration
100.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-11 of 11

JANA Partners Management, LP Full Holdings List — 2026 Q2

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
MRCY
MERCURY SYS INC
Industrials 25.46% 18.65% #1
Prev: #1
6.5
-148,575 -3.6%
P
S
3,958,849 $484,285,998 2023 Q3 13F Filing 2026-06-30 2026-08-14
COO
COOPER COS INC
Healthcare 13.50% 15.87% #2
Prev: #2
6.0
17,322 0.5%
P
S
3,582,480 $256,899,641 2025 Q3 13F Filing 2026-06-30 2026-08-14
SPY
STATE STR SPDR ...
ETF 13.46% 13.92% #3 1
Prev: #4
5.5
-700 -0.2%
P
S
342,965 $256,115,973 2023 Q3 13F Filing 2026-06-30 2026-08-14
LW
LAMB WESTON HLD...
Consumer Defensive 12.25% 13.18% #4 1
Prev: #5
6.5
386,000 7.7%
P
S
5,394,635 $232,940,339 2024 Q3 13F Filing 2026-06-30 2026-08-14
FISV
FISERV INC
Unknown 9.44% 15.41% #5 2
Prev: #3
4.8
-773,525 -17.4%
P
S
3,662,080 $179,625,024 2025 Q4 13F Filing 2026-06-30 2026-08-14
MKL
MARKEL GROUP IN...
Financial Services 7.88% 8.98% #6
Prev: #6
3.7
1,436 1.9%
P
S
76,743 $149,879,846 2024 Q4 13F Filing 2026-06-30 2026-08-14
ALKT
ALKAMI TECHNOLO...
Technology 6.43% 5.30% #7
Prev: #7
5.1
1,316,319 24.2%
P
S
6,747,707 $122,268,451 2025 Q3 13F Filing 2026-06-30 2026-08-14
FUN
SIX FLAGS ENTER...
Consumer Cyclical 4.61% 4.55% #8
Prev: #8
2.8
no change no change
P
S
4,116,099 $87,672,909 2025 Q3 13F Filing 2026-06-30 2026-08-14
PSTG
EVERPURE INC
Technology 4.10% #9
Prev: #—
5.1
989,196
NEW
989,196 $77,938,753 2026 Q2 13F Filing 2026-06-30 2026-08-14
RPD
RAPID7 INC
Technology 2.87% 2.31% #10 1
Prev: #9
1.6
6,283 0.1%
P
S
6,749,936 $54,674,482 2024 Q2 13F Filing 2026-06-30 2026-08-14
EHAB
ENHABIT INC
Healthcare 0.00% 1.83%
Sold All 😨
(Was: #10)
0.0
-2,090,412 -100.0%
CLOSED
$— 2023 Q3 13F Filing 2026-06-30 2026-08-14
Showing 1-11 of 11 holdings

Unlock Full JANA Partners Management, LP Analysis

PRO subscribers get access to all historical quarters, Excel/CSV exports, Portfolio Concentration Analytics (PCA), and Risk-Based ENB.

Full Historical Quarters
Excel & CSV Export
PCA & Risk-Based ENB
Auto Cost Basis
Position Change Alerts
Price-Held Analytics
Full history →