Jana Partners
Jana Partners LLC
Jana Partners LLC is an investment management firm founded in 2001 by Barry Rosenstein, Jana’s Managing Partner and Co-Portfolio Manager. The firm has its headquarters in New York.
Stock Trading
All
Buys
Sells
No.
Name
Action
Shares Traded
% Change
Shares Held
Mkt Value (Date)
Report Date
Watchlist
Lamb Weston Holdings Inc (US)
LW
Buy
+386.00K
+6.60%
5.39M
$234.94M
2026-04-15
Rapid7 Inc (US)
RPD
Buy
+16.50K
+0.20%
6.76M
$37.25M
2026-03-26
Alkami Technology Inc (US)
ALKT
Buy
+536.72K
+8.90%
5.43M
$85.11M
2026-03-25
4
Mercury Systems Inc (US)
MRCY
Sell
-444.86K
-9.70%
4.11M
$300.00M
2026-03-04
5
TreeHouse Foods Ord Shs ()
THS
Exit
-5.82M
-100.00%
0.00
$0.00
2026-02-11
6
Fiserv Ord Shs (US)
FISV
New
+2.25M
+50.00%
2.25M
$150.83M
2025-12-31
7
Trimble Inc (US)
TRMB
Exit
-1.88M
-100.00%
0.00
$0.00
2025-12-31
8
Cooper Companies Inc (US)
COO
Buy
+1.09M
+23.50%
3.52M
$288.47M
2025-12-31
9
Freshpet Inc (US)
FRPT
Sell
-490.75K
-46.80%
557.39K
$33.96M
2025-12-31
10
Markel Group Inc (US)
MKL
Sell
-66.19K
-44.90%
81.22K
$174.59M
2025-12-31
