Filed: 8/14/2026ACC: 0000902664-26-003486
📋 What this filing means
JANA PARTNERS MANAGEMENT, LP filed this quarterly 13F‑HR report disclosing 10 equity positions with a total reported market value of $1.90B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
10
Positions
$1.90B
Total AUM (reported)
35.62M
Total Shares
Allocation by class
COM$1.57B82.4%
TR UNIT$256.12M13.5%
CL A$77.94M4.1%
Portfolio Concentration
Top 3$997.30M52.4%
4–10$905.00M47.6%
Top 3 weight
52.4%
Top 10 weight
100.0%
Voting Authority Distribution
Total shares with voting rights: 35.62M
Sole
Full voting authority
35.62M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole10
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings10
Rows:
MERCURY SYS INC
SOLEShares3.96M
TypeSH
Market value$484.29M
25.46%
Sole
3.96M
Shared
0.00
None
0.00
COOPER COS INC
SOLEShares3.58M
TypeSH
Market value$256.90M
13.50%
Sole
3.58M
Shared
0.00
None
0.00
STATE STR SPDR S&P 500 ETF T
SOLEShares342.96K
TypeSH
Market value$256.12M
13.46%
Sole
342.96K
Shared
0.00
None
0.00
LAMB WESTON HLDGS INC
SOLEShares5.39M
TypeSH
Market value$232.94M
12.25%
Sole
5.39M
Shared
0.00
None
0.00
FISERV INC
SOLEShares3.66M
TypeSH
Market value$179.63M
9.44%
Sole
3.66M
Shared
0.00
None
0.00
MARKEL GROUP INC
SOLEShares76.74K
TypeSH
Market value$149.88M
7.88%
Sole
76.74K
Shared
0.00
None
0.00
ALKAMI TECHNOLOGY INC
SOLEShares6.75M
TypeSH
Market value$122.27M
6.43%
Sole
6.75M
Shared
0.00
None
0.00
SIX FLAGS ENTERTAINMENT CORP
SOLEShares4.12M
TypeSH
Market value$87.67M
4.61%
Sole
4.12M
Shared
0.00
None
0.00
EVERPURE INC
SOLEShares989.20K
TypeSH
Market value$77.94M
4.10%
Sole
989.20K
Shared
0.00
None
0.00
RAPID7 INC
SOLEShares6.75M
TypeSH
Market value$54.67M
2.87%
Sole
6.75M
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MERCURY SYS INCSOLE | COM | 3.96M | SH | $484.29M 25.46% | 3.96M | 0.00 | 0.00 |
COOPER COS INCSOLE | COM | 3.58M | SH | $256.90M 13.50% | 3.58M | 0.00 | 0.00 |
STATE STR SPDR S&P 500 ETF TSOLE | TR UNIT | 342.96K | SH | $256.12M 13.46% | 342.96K | 0.00 | 0.00 |
LAMB WESTON HLDGS INCSOLE | COM | 5.39M | SH | $232.94M 12.25% | 5.39M | 0.00 | 0.00 |
FISERV INCSOLE | COM | 3.66M | SH | $179.63M 9.44% | 3.66M | 0.00 | 0.00 |
MARKEL GROUP INCSOLE | COM | 76.74K | SH | $149.88M 7.88% | 76.74K | 0.00 | 0.00 |
ALKAMI TECHNOLOGY INCSOLE | COM | 6.75M | SH | $122.27M 6.43% | 6.75M | 0.00 | 0.00 |
SIX FLAGS ENTERTAINMENT CORPSOLE | COM | 4.12M | SH | $87.67M 4.61% | 4.12M | 0.00 | 0.00 |
EVERPURE INCSOLE | CL A | 989.20K | SH | $77.94M 4.10% | 989.20K | 0.00 | 0.00 |
RAPID7 INCSOLE | COM | 6.75M | SH | $54.67M 2.87% | 6.75M | 0.00 | 0.00 |