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
Latest book
| MRCY - Mercury Sys | 25.46% | Reduce −3.6% | 3,958,849 | $122.33 | $484M | −148,575 | +$185M |
| COO - Cooper Cos | 13.50% | Add +0.5% | 3,582,480 | $71.71 | $257M | +17,322 | +$2M |
| SPY — | 13.46% | Reduce −0.2% | 342,965 | $746.77 | $256M | −700 | +$33M |
| LW - Lamb Weston | 12.25% | Add +7.7% | 5,394,635 | $43.18 | $233M | +386,000 | +$21M |
| FISV - Fiserv | 9.44% | Reduce −17.4% | 3,662,080 | $49.05 | $180M | −773,525 | −$68M |
| MKL - Markel Group | 7.88% | Add +1.9% | 76,743 | $1,953 | $150M | +1,436 | +$6M |
| ALKT - Alkami Technology | 6.43% | Add +24.2% | 6,747,707 | $18.12 | $122M | +1,316,319 | +$37M |
| FUN - Six Flags Entertainment | 4.61% | Hold | 4,116,099 | $21.30 | $88M | — | — |
| PSTG - Pure Storage · CL A | 4.10% | New | 989,196 | $78.79 | $78M | +989,196 | +$78M |
| RPD - Rapid7 | 2.87% | Add +0.1% | 6,749,936 | $8.10 | $55M | +6,283 | +$18M |
Exits / last held
not current holdings · last reported size, unchanged · gone vs 2026 Q1
| Stock | % of portfolio | Recent activity | Shares | Reported price* | Value | Share change | $ change |
|---|---|---|---|---|---|---|---|
| Enhabit | 1.83% | Exit | 0 | $14.09 | $29M | −2,090,412 | −$29M |
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 holds | 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 holds | 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