1y return+13.6%S&P 500 +20.9%
These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.
$100 invested in its stock picks
Since September 30, 2023: $141 against $175 in the S&P 500.2
JANA Partners Management, LPS&P 500 (SPY)
Top holdings
At the end of June 30, 2026. Change is in shares since the quarter before.2
| Stock | Value | Share of portfolio | Change |
|---|---|---|---|
| MRCYMercury Sys Inc | $484.3M | 25.5% | −3.6% |
| COOCooper Cos Inc | $256.9M | 13.5% | |
| SPYState Str Spdr S&p 500 Etf T | $256.1M | 13.5% | |
| LWLamb Weston Hldgs Inc | $232.9M | 12.2% | +7.7% |
| FISVFiserv Inc | $179.6M | 9.4% | −17.4% |
| MKLMarkel Group Inc | $149.9M | 7.9% | +1.9% |
| ALKTAlkami Technology Inc | $122.3M | 6.4% | +24.2% |
| FUNSix Flags Entertainment Corp | $87.7M | 4.6% | |
| PEverpure Inc | $77.9M | 4.1% | −5.1% |
| RPDRapid7 Inc | $54.7M | 2.9% |
Best picks still held
How each current holding has done since the quarter it first appeared in its filings (up to six years back).
| Stock | Held since | Return since | Now worth |
|---|---|---|---|
| MRCYMercury Sys Inc | September 30, 2023 | +229.8% | $484.3M |
| SPYState Str Spdr S&p 500 Etf T | September 30, 2023 | +74.7% | $256.1M |
| PEverpure Inc | March 31, 2026 | +33.5% | $77.9M |
| MKLMarkel Group Inc | December 31, 2024 | +13.1% | $149.9M |
| COOCooper Cos Inc | September 30, 2025 | +4.6% | $256.9M |
| FUNSix Flags Entertainment Corp | September 30, 2025 | −6.2% | $87.7M |
| FISVFiserv Inc | December 31, 2025 | −27.0% | $179.6M |
| ALKTAlkami Technology Inc | September 30, 2025 | −27.1% | $122.3M |
| LWLamb Weston Hldgs Inc | September 30, 2024 | −33.3% | $232.9M |
| RPDRapid7 Inc | June 30, 2024 | −81.3% | $54.7M |
Sold off last quarter
- Enhabit IncCUSIP 29332G102 was $29.5M
Quarter by quarter
| Quarter | Its picks | S&P 500 |
|---|---|---|
| June 30, 2026 | +17.1% | +14.8% |
| March 31, 2026 | −8.9% | −4.6% |
| December 31, 2025 | −3.3% | +2.4% |
| September 30, 2025 | +10.1% | +7.8% |
| June 30, 2025 | +5.1% | +10.5% |
| March 31, 2025 | −11.2% | −4.6% |
| December 31, 2024 | +1.7% | +2.1% |
| September 30, 2024 | +10.3% | +5.4% |
| June 30, 2024 | −3.5% | +4.0% |
| March 31, 2024 | +9.2% | +10.0% |
| December 31, 2023 | +12.5% | +11.2% |
Sources
Every number on this page points here. Each one links to the public record.
- 1SEC EDGAR: JANA Partners Management, LP Form 13F filingshttps://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1998597&type=13F-HR&dateb=&owner=include&count=40CIK 1998597
- 2SEC: 13F for the quarter ended June 30, 2026https://www.sec.gov/Archives/edgar/data/1998597/000090266426003486/Filed August 14, 2026 · accession 0000902664-26-003486