Institutions / JANA Partners Management, LP
JANA Partners Management, LP
CIK 1998597 · Institutionalso an insider · as of Dec 31, 2025
Portfolio value
$1.92B
Positions
12
As of
Dec 31, 2025
Top holdings
Dec 31, 2025
| Company | Value | % of portfolio |
|---|---|---|
| Mercury Systems Inc | $362.09M | 18.8% |
| Cooper Companies, Inc. | $288.47M | 15.0% |
| SPDR S&P 500 ETF Tr | $266.86M | 13.9% |
| Lamb Weston Holdings, Inc. | $209.81M | 10.9% |
| Markel Group Inc | $174.59M | 9.1% |
| Fiserv Inc | $150.83M | 7.8% |
| TreeHouse Foods Inc | $137.33M | 7.1% |
| Alkami Technology, Inc. | $112.92M | 5.9% |
| Rapid7, Inc. | $102.50M | 5.3% |
| Six Flags Entertainment Corporation/NEW | $63.14M | 3.3% |
| Freshpet, Inc. | $33.96M | 1.8% |
| Enhabit, Inc. | $19.27M | 1.0% |
Activity
Dec 31, 2025
InsidersInstitutions
This fund's 13F position changes — what it's buying and selling.No quarter-over-quarter changes yet — position changes appear once we've ingested two consecutive 13F filings for this manager. We currently hold 1 quarter of holdings.
Insider transactions
Also files Forms 3 / 4 / 5
| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 10, 2026 | Sell | THS TreeHouse Foods Inc Common Stock, par value $0.01 per share | $47.96M | -2.0M -33.66% | 3,862,116 0.76% of shares | high |
| Feb 9, 2026 | Sell | MRCY Mercury Systems Inc Common Stock, par value $0.01 per share | $32.40M | -400K -8.05% | 4,566,675 7.61% of shares | high |
| Mar 2, 2026 | Sell | MRCY Mercury Systems Inc Common Stock, par value $0.01 per share ("Common Stock") | $17.17M | -183K -4.00% | 4,384,165 7.30% of shares | high |
| Mar 3, 2026 | Sell | MRCY Mercury Systems Inc Common Stock | $15.20M | -169K -3.85% | 4,215,517 7.02% of shares | high |
| Mar 4, 2026 | Sell | MRCY Mercury Systems Inc Common Stock | $9.05M | -101K -2.39% | 4,114,618 6.85% of shares | medium |
| Feb 11, 2026 | Exercise | THS TreeHouse Foods Inc Restricted Stock Units | — | -8K -100.00% | 0 0.00% of shares | low |
| Feb 11, 2026 | Other | THS TreeHouse Foods Inc Common Stock | — | -8K -100.00% | 0 0.00% of shares | low |
| Feb 11, 2026 | Exercise | THS TreeHouse Foods Inc Common Stock | — | +8K | 7,727 <0.01% of shares | low |
| Feb 11, 2026 | Other | THS TreeHouse Foods Inc Common Stock, par value $0.01 per share ("Common Stock") | — | -3.9M -100.00% | 0 0.00% of shares | low |
| Feb 9, 2026 | Other | THS TreeHouse Foods Inc Notional Derivative Agreements (obligation to buy) | — | -22K -100.00% | 0 0.00% of shares | low |