Featured 13F manager
JANA Partners Management, LP
New York, NY 14 processed 13Fs on this site · 2023 Q3–2026 Q2
- $1.9B
- 10 Positions
- 2026 Q2
- +18.4% QoQ
- Top 5 74.1%
Portfolio
top 5 74.1% · top 10 100.0%
- MRCY - Mercury Sys 25.5%
- COO - Cooper Cos 13.5%
- SPY 13.5%
- LW - Lamb Weston 12.2%
- FISV - Fiserv 9.4%
- MKL - Markel Group 7.9%
- ALKT - Alkami Technology 6.4%
- FUN - Six Flags Entertainment 4.6%
- PSTG - Pure Storage · CL A 4.1%
- RPD - Rapid7 2.9%
AUM over time
Book
| MRCY - Mercury Sys | 18.65% | Reduce −17.2% | 4,107,424 | $72.91 | $299M | −852,057 | −$63M |
| COO - Cooper Cos | 15.87% | Add +1.3% | 3,565,158 | $71.50 | $255M | +45,538 | −$34M |
| FISV - Fiserv | 15.41% | Add +97.5% | 4,435,605 | $55.80 | $248M | +2,190,085 | +$97M |
| SPY | 13.92% | Reduce −12.2% | 343,665 | $650.34 | $223M | −47,672 | −$43M |
| LW - Lamb Weston | 13.18% | Hold | 5,008,635 | $42.26 | $212M | — | — |
| MKL - Markel Group | 8.98% | Reduce −7.3% | 75,307 | $1,914 | $144M | −5,912 | −$30M |
| ALKT - Alkami Technology | 5.30% | Add +11.0% | 5,431,388 | $15.67 | $85M | +536,723 | −$28M |
| FUN - Six Flags Entertainment | 4.55% | Hold | 4,116,099 | $17.75 | $73M | — | — |
| RPD - Rapid7 | 2.31% | Hold | 6,743,653 | $5.51 | $37M | — | — |
| Enhabit | 1.83% | Hold | 2,090,412 | $14.09 | $29M | — | — |
Exits / last held
not current holdings · last reported size, unchanged · gone vs 2025 Q4
| Stock | % of portfolio | Recent activity | Shares | Reported price* | Value | Share change | $ change |
|---|---|---|---|---|---|---|---|
| Treehouse Foods | 7.15% | Exit | 0 | $23.59 | $137M | −5,821,337 | −$137M |
| FRPT - Freshpet | 1.77% | Exit | 0 | $60.93 | $34M | −557,390 | −$34M |
Filings history
12 periods · normalized AUM · open a period for holdings
| Period | Holdings | AUM | QoQ | Form | Filed | Filing ID |
|---|---|---|---|---|---|---|
| 2026 Q2 | 10 | $1.9B | +18.4% | 13F-HR | 8/14/2026 | 000090266426003486 |
| 2026 Q1 | 1 | $62M | — | NEW HOLDINGS | 6/30/2026 | 000090266426002957 |
| 2026 Q1 | 10 | $1.6B | −16.4% | 13F-HR | 5/15/2026 | 000090266426002515 |
| 2025 Q4 | 12 | $1.9B | −6.9% | 13F-HR | 2/17/2026 | 000090266426001069 |
| 2025 Q3 | 12 | $2.1B | +3.7% | 13F-HR | 11/14/2025 | 000090266425005066 |
| 2025 Q2 | 10 | $2B | +2.8% | 13F-HR | 8/14/2025 | 000090266425003587 |
| 2025 Q1 | 10 | $1.9B | −4.7% | 13F-HR | 5/15/2025 | 000090266425002348 |
| 2024 Q4 | 11 | $2B | +5.6% | 13F-HR | 2/14/2025 | 000090266425001058 |
| 2024 Q3 | 12 | $1.9B | +12.6% | 13F-HR | 11/14/2024 | 000090266424006510 |
| 2024 Q2 | 12 | $1.7B | −6.6% | 13F-HR | 8/14/2024 | 000090266424005100 |
| 2024 Q1 | 10 | $1.8B | +18.1% | 13F-HR | 5/15/2024 | 000090266424003586 |
| 2023 Q4 | 8 | $1.5B | +13.4% | 13F-HR | 2/14/2024 | 000090266424001588 |
| 2023 Q3 | 1 | $36M | — | NEW HOLDINGS | 11/16/2023 | 000090266423005626 |
| 2023 Q3 | 8 | $1.4B | — | 13F-HR | 11/14/2023 | 000090266423005550 |
About
JANA Partners Management, LP
14 processed 13Fs on this site · 2023 Q3–2026 Q2