JANA Partners
JANA Partners Management, LP · CIK 0001998597 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source ↗Activist Investor
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$1.90B
2026 Q2
Positions
10
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
100.0%
Est. Net Flow (Q)
—
2026 Q2
AUM History
Quarterly History · 12 Quarter
| Quarter | Filed | Holdings | Total Value | Turnover % | Top 10 |
|---|---|---|---|---|---|
| 2026 Q2 | 2026-08-14 | 10 | $1.90B | 185.8% | MRCY, COO, SPY, LW, FISV, MKL, ALKT, FUN, P, RPD |
| 2026 Q1 | 2026-06-30 | 1 | $61.5M | 200.0% | P |
| 2025 Q4 | 2026-02-17 | 12 | $1.92B | 15.3% | MRCY, COO, SPY, LW, MKL, FISV, 89469A104, ALKT, RPD, FUN |
| 2025 Q3 | 2025-11-14 | 12 | $2.07B | 16.3% | MRCY, LW, MKL, SPY, COO, TRMB, RPD, 89469A104, FUN, FRPT |
| 2025 Q2 | 2025-08-14 | 10 | $1.99B | 3.1% | LW, MRCY, SPY, MKL, TRMB, RPD, 89469A104, FRPT, WEX, 29332G102 |
| 2025 Q1 | 2025-05-15 | 10 | $1.94B | 4.8% | LW, SPY, MRCY, MKL, TRMB, 89469A104, RPD, FRPT, FIS, 29332G102 |
| 2024 Q4 | 2025-02-14 | 10 | $2.03B | 17.2% | LW, TRMB, MRCY, SPY, MKL, 89469A104, RPD, FIS, 977852102, 29332G102 |
| 2024 Q3 | 2024-11-14 | 11 | $1.93B | 17.5% | TRMB, SPY, MRCY, LW, 89469A104, RPD, 35909D109, FIS, 977852102, 29332G102 |
| 2024 Q2 | 2024-08-14 | 12 | $1.71B | 17.9% | 35909D109, SPY, FIS, TRMB, MRCY, 89469A104, 977852102, RPD, BL, QDEL |
| 2024 Q1 | 2024-05-15 | 10 | $1.83B | 11.3% | SPY, FIS, TRMB, 35909D109, MRCY, 89469A104, 977852102, FRPT, QDEL, 29332G102 |
| 2023 Q4 | 2024-02-14 | 8 | $1.55B | 200.0% | SPY, FRPT, 35909D109, 89469A104, TRMB, FIS, MRCY, 29332G102 |
| 2023 Q3 | 2023-11-16 | 1 | $35.7M | — | 977852102 |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
Related managers
Five closest superinvestors by Jaccard overlap of tickers held in the latest quarter (computed nightly).
| Manager | Overlap | Shared holdings |
|---|---|---|
| Greenlea Lane Capital (Josh Tarasoff) | 5.3% | MKL |
| Sachem Head Capital Management | 3.6% | FUN |
| Giverny Capital | 3.4% | MKL, SPY |
| Starboard Value | 3.3% | LW |
| Harris Associates (Bill Nygren) | 2.2% | COO, FISV, SPY |
Read the 2026-Q2 quarterly report · 13F Filing Calendar
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.