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Super Investors / JANA Partners Management, LP
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JANA Partners Management, LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$1.9B
Positions
10
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (12 quarters reported)

$2.07B $1.4B
Q3 23 Q2 24 Q1 25 Q4 25 Q2 26

$1.4B in Q3 2023 → $1.9B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
MS Mercury Sys Inc 25.5% Trimmed 3.6% 3,958,849 $484M
CC Cooper Cos Inc 13.5% Added 0.5% 3,582,480 $257M
SS State Str SPDR S&P 500 ETF T 13.5% Trimmed 0.2% 342,965 $256M
LW Lamb Weston Hldgs Inc 12.2% Added 7.7% 5,394,635 $233M
Fiserv Inc 9.4% Trimmed 17% 3,662,080 $180M
Markel Group Inc 7.9% Added 1.9% 76,743 $150M
Alkami Technology Inc 6.4% Added 24% 6,747,707 $122M
SF Six Flags Entertainment Corp 4.6% Unchanged 4,116,099 $87.7M
Everpure Inc 4.1% Trimmed 5.1% 989,196 $77.9M
Rapid7 Inc 2.9% Added 0.1% 6,749,936 $54.7M

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Fiserv Inc Trimmed −773,525 −$37.9M 9.4%
Enhabit Inc Exited −2,090,412 −$29.5M
Alkami Technology Inc Added +1,316,319 +$23.9M 6.4%
MS Mercury Sys Inc Trimmed −148,575 −$18.2M 25.5%
LW Lamb Weston Hldgs Inc Added +386,000 +$16.7M 12.2%
Everpure Inc Trimmed −53,100 −$4.18M 4.1%
Markel Group Inc Added +1,436 +$2.8M 7.9%
CC Cooper Cos Inc Added +17,322 +$1.24M 13.5%
SS State Str SPDR S&P 500 ETF T Trimmed −700 −$523K 13.5%
Rapid7 Inc Added +6,283 +$50.9K 2.9%

Q1 2026

quarter ended March 31, 2026 · filed June 30, 2026

Company Action Shares changed Value of change % of portfolio
Treehouse Foods Inc Exited −5,821,337 −$137M
Fiserv Inc Added +2,190,085 +$122M 14.8%
MS Mercury Sys Inc Trimmed −852,057 −$62.1M 18.0%
Everpure Inc New +1,042,296 +$61.5M 3.7%
Freshpet Inc Exited −557,390 −$34M
SS State Str SPDR S&P 500 ETF T Trimmed −47,672 −$31M 13.4%
Markel Group Inc Trimmed −5,912 −$11.3M 8.6%
Alkami Technology Inc Added +536,723 +$8.41M 5.1%
CC Cooper Cos Inc Added +45,538 +$3.26M 15.3%

Q4 2025

quarter ended December 31, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Trimble Inc Exited −1,881,399 −$154M
Fiserv Inc New +2,245,520 +$151M 7.8%
Markel Group Inc Trimmed −66,192 −$142M 9.1%
CC Cooper Cos Inc Added +1,085,013 +$88.9M 15.0%
MS Mercury Sys Inc Trimmed −1,000,000 −$73M 18.8%
Alkami Technology Inc Added +3,002,252 +$69.3M 5.9%
Freshpet Inc Trimmed −490,746 −$29.9M 1.8%
Rapid7 Inc Added +241,545 +$3.67M 5.3%
SS SPDR S&P 500 ETF Tr Added +4,700 +$3.21M 13.9%
SF Six Flags Entertainment Corp Added +66,159 +$1.01M 3.3%

Showing the 10 largest of 11 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
CC Cooper Cos Inc New +2,434,607 +$167M 8.1%
Trimble Inc Trimmed −1,727,498 −$141M 7.4%
LW Lamb Weston Hldgs Inc Trimmed −2,223,584 −$129M 14.1%
SF Six Flags Entertainment Corp New +4,049,940 +$92M 4.5%
SS SPDR S&P 500 ETF Tr Trimmed −126,416 −$84.2M 12.5%
MS Mercury Sys Inc Trimmed −793,932 −$61.5M 22.3%
Alkami Technology Inc New +1,892,413 +$47M 2.3%
Wex Inc Exited −164,029 −$24.1M
Rapid7 Inc Added +772,194 +$14.5M 5.9%
Markel Group Inc Trimmed −4,021 −$7.69M 13.6%

Showing the 10 largest of 11 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
LW Lamb Weston Hldgs Inc Trimmed −753,207 −$39.1M 18.8%
Rapid7 Inc Added +1,623,858 +$37.6M 6.7%
FN Fidelity Natl Information Sv Exited −496,895 −$37.1M
Trimble Inc Trimmed −336,330 −$25.6M 13.8%
Wex Inc New +164,029 +$24.1M 1.2%
Freshpet Inc Added +272,000 +$18.5M 3.4%
Treehouse Foods Inc Added +910,387 +$17.7M 5.7%
SS SPDR S&P 500 ETF Tr Trimmed −27,300 −$16.9M 15.9%
MS Mercury Sys Inc Trimmed −188,152 −$10.1M 18.3%
Markel Group Inc Trimmed −4,590 −$9.17M 15.2%

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
Markel Group Inc Exited −69,000 −$119M
Markel Group Inc Added +47,096 +$88.1M 15.1%
SS SPDR S&P 500 ETF Tr Added +111,090 +$62.1M 15.6%
Freshpet Inc New +734,763 +$61.1M 3.2%
LW Lamb Weston Hldgs Inc Added +854,087 +$45.5M 22.0%
Wolfspeed Inc Exited −4,988,216 −$33.2M
Trimble Inc Trimmed −232,861 −$15.3M 13.4%
Rapid7 Inc Added +415,927 +$11M 5.6%

Q4 2024

quarter ended December 31, 2024 · filed February 14, 2025

Company Action Shares changed Value of change % of portfolio
LW Lamb Weston Hldgs Inc Added +3,604,585 +$241M 23.4%
Markel Group Inc New +108,926 +$188M 9.2%
LW Lamb Weston Hldgs Inc Exited −2,302,000 −$149M
FC Frontier Communications Pare Exited −3,910,213 −$139M
Markel Group Inc New +69,000 +$119M 5.9%
FN Fidelity Natl Information Sv Trimmed −1,090,034 −$88M 2.0%
Trimble Inc Trimmed −702,856 −$49.7M 14.5%
SS SPDR S&P 500 ETF Tr Trimmed −49,700 −$29.1M 12.4%
FH Fortrea Hldgs Inc Exited −692,408 −$13.8M
Wolfspeed Inc Trimmed −1,177,717 −$7.84M 1.6%

Showing the 10 largest of 11 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2024

Company Action Shares changed Value of change % of portfolio
LW Lamb Weston Hldgs Inc New +3,526,754 +$228M 11.9%
FC Frontier Communications Pare Trimmed −5,667,520 −$201M 7.2%
LW Lamb Weston Hldgs Inc New +2,302,000 +$149M 7.7%
FN Fidelity Natl Information Sv Trimmed −1,555,686 −$130M 6.9%
Blackline Inc Exited −1,154,435 −$55.9M
Trimble Inc Added +703,400 +$43.7M 15.7%
Rapid7 Inc Added +931,154 +$37.1M 7.6%
Quidelortho Corp Exited −1,026,413 −$34.1M
SS SPDR S&P 500 ETF Tr Added +40,030 +$23M 14.3%
MS Mercury Sys Inc Added +16,669 +$617K 13.3%

Showing the 10 largest of 12 changes.

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