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Data sourced from SEC EDGAR 13F filings

© 2026 Super Investor · Not financial advice

JANA Partners Management LP

Period:
Q1 2026
Portfolio date:
Mar 31, 2026
No. of stocks:
10
Portfolio value:
$1,605,978,000
Filed:
May 15, 2026
CIK:
1998597
HistStockActivityShare change% change to portfolio
Q1 2026filed May 15, 262 added3 reduced2 exited
≡FISV – FISERV INCAdd 98.00%2,190,0857.56
≡THS – TREEHOUSE FOODS INCSell−5,821,337−7.15
≡FRPT – FRESHPET INCSell−557,390−1.77
≡ALKT – ALKAMI TECHNOLOGY INCAdd 11.00%536,723−0.58
≡MRCY – MERCURY SYS INCReduce 17.00%−852,057−0.19
≡MKL – MARKEL GROUP INCReduce 7.00%−5,912−0.11
≡SPY – STATE STR SPDR S&P 500 ETF TReduce 12.00%−47,6720.03
Q4 2025filed Feb 17, 261 new2 added3 reduced1 exited
≡FISV – FISERV INCBuy2,245,5207.85
≡TRMB – TRIMBLE INCSell−1,881,399−7.44
≡COO – COOPER COS INCAdd 45.00%1,085,0136.93
≡MKL – MARKEL GROUP INCReduce 45.00%−66,192
Q3 2025filed Nov 14, 253 new1 added4 reduced1 exited
≡COO – COOPER COS INCBuy2,434,6078.08
≡TRMB – TRIMBLE INCReduce 48.00%−1,727,498−6.33
≡LW – LAMB WESTON HLDGS INCReduce 31.00%−2,223,584−4.75
≡FUN – SIX FLAGS ENTERTAINMENT CORPBuy4,049,940
Q2 2025filed Aug 14, 251 new3 added2 reduced1 exited
≡LW – LAMB WESTON HLDGS INCReduce 9.00%−753,207−3.14
≡FIS – FIDELITY NATL INFORMATION SVSell−496,895−1.92
≡WEX – WEX INCBuy164,0291.21
≡THS – TREEHOUSE FOODS INCAdd 19.00%910,387
Q1 2025filed May 15, 251 new4 added1 reduced1 exited
≡MKL – MARKEL GROUP INCAdd 43.00%47,0965.81
≡SPY – SPDR S&P 500 ETF TRAdd 26.00%111,0903.23
≡FRPT – FRESHPET INCBuy734,7633.16
≡RPD – RAPID7 INCAdd 11.00%415,927
Q4 2024filed Feb 14, 252 new1 added4 reduced2 exited
≡LW – LAMB WESTON HLDGS INCAdd 210.00%4,829,33915.71
≡MKLCALL – MARKEL GROUP INCBuy108,9269.25
≡FYBR – FRONTIER COMMUNICATIONS PARESell−3,910,213−7.21
≡MKL
Q3 2024filed Nov 14, 242 new3 added2 reduced2 exited
≡LWCALL – LAMB WESTON HLDGS INCBuy3,526,75411.85
≡LWCALL – LAMB WESTON HLDGS INCBuy2,302,0007.74
≡FYBR – FRONTIER COMMUNICATIONS PAREReduce 59.00%−5,667,520−7.45
Q2 2024filed Aug 14, 243 new2 added3 reduced1 exited
≡FRPT – FRESHPET INCSell−1,093,477−6.92
≡RPD – RAPID7 INCBuy2,724,3866.89
≡SPY – SPDR S&P 500 ETF TRReduce 36.00%−241,800−5.49
≡BL – BLACKLINE INCBuy1,154,435
Q1 2024filed May 15, 242 new3 added1 reduced
≡FRPT – FRESHPET INCReduce 61.00%−1,700,477−8.72
≡WOLF – WOLFSPEED INCBuy4,557,8817.35
≡QDEL – QUIDELORTHO CORPBuy1,195,8003.13
≡SPY – SPDR S&P 500 ETF TRAdd 23.00%126,800
Q4 2023filed Feb 14, 248 new1 exited
≡WOLF – WOLFSPEED INCSell−936,000−100.00
≡SPY – SPDR S&P 500 ETF TRBuy553,93317.00
≡FRPT – FRESHPET INCBuy2,793,95415.65
≡FYBR – FRONTIER COMMUNICATIONS PAREBuy9,023,47614.76
−4.56
≡ALKT – ALKAMI TECHNOLOGY INCAdd 159.00%3,002,2523.60
≡MRCY – MERCURY SYS INCReduce 17.00%−1,000,000−3.49
≡FRPT – FRESHPET INCReduce 47.00%−490,746−1.03
4.45
≡MRCY – MERCURY SYS INCReduce 12.00%−793,9324.06
≡SPY – SPDR S&P 500 ETF TRReduce 25.00%−126,416−3.45
≡ALKT – ALKAMI TECHNOLOGY INCBuy1,892,4132.28
≡WEX – WEX INCSell−164,029−1.21
≡RPD – RAPID7 INCAdd 13.00%772,194−0.75
−1.19
≡RPD – RAPID7 INCAdd 40.00%1,623,8581.04
≡TRMB – TRIMBLE INCReduce 9.00%−336,3300.40
≡FRPT – FRESHPET INCAdd 37.00%272,0000.28
−1.68
≡WOLF – WOLFSPEED INCSell−4,988,216−1.63
≡LW – LAMB WESTON HLDGS INCAdd 12.00%854,087−1.46
≡TRMB – TRIMBLE INCReduce 6.00%−232,861−1.15
CALL
– MARKEL GROUP INC
Buy
69,000
5.86
≡FIS – FIDELITY NATL INFORMATION SVReduce 69.00%−1,090,034−4.93
≡SPY – SPDR S&P 500 ETF TRReduce 10.00%−49,700−1.89
≡WOLF – WOLFSPEED INCReduce 19.00%−1,177,717−1.47
≡TRMB – TRIMBLE INCReduce 14.00%−702,856−1.21
≡FTRE – FORTREA HLDGS INCSell−692,408−0.72
≡
FIS – FIDELITY NATL INFORMATION SV
Reduce 50.00%
−1,555,686
−6.95
≡BL – BLACKLINE INCSell−1,154,435−3.27
≡TRMB – TRIMBLE INCAdd 17.00%703,4002.07
≡QDEL – QUIDELORTHO CORPSell−1,026,413−1.99
≡RPD – RAPID7 INCAdd 34.00%931,1540.68
≡SPY – SPDR S&P 500 ETF TRAdd 9.00%40,0300.29
3.27
≡QDEL – QUIDELORTHO CORPReduce 14.00%−169,387−1.14
≡FTRE – FORTREA HLDGS INCBuy690,0000.94
≡WOLF – WOLFSPEED INCAdd 35.00%1,608,0520.86
≡TRMB – TRIMBLE INCAdd 11.00%416,4690.43
≡FIS – FIDELITY NATL INFORMATION SVReduce 9.00%−296,199−0.09
2.47
≡FYBR – FRONTIER COMMUNICATIONS PAREAdd 8.00%698,600−1.74
≡MRCY – MERCURY SYS INCAdd 33.00%1,713,761−1.14
≡THS – TREEHOUSE FOODS INCBuy4,907,68913.13
≡TRMB – TRIMBLE INCBuy3,760,37112.91
≡FIS – FIDELITY NATL INFORMATION SVBuy3,314,41412.85
≡MRCY – MERCURY SYS INCBuy5,211,13512.30
≡EHAB – ENHABIT INCBuy2,083,7771.39