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
Fiserv Ord Shs (US)
FISV
Buy
+2.19M
+49.20%
4.45M
$247.51M
2026-03-31
Mercury Systems Inc (US)
MRCY
Sell
-852.06K
-17.80%
3.08M
$299.47M
2026-03-31
Alkami Technology Inc (US)
ALKT
Buy
+536.72K
+10.60%
5.07M
$85.11M
2026-03-31
4
Cooper Companies Inc (US)
COO
Buy
+45.54K
+1.10%
4.19M
$254.91M
2026-03-31
5
Markel Group Inc (US)
MKL
Sell
-5.91K
-6.60%
78.00K
$144.14M
2026-03-31
