JANA Partners Management, LP 13F: Quarter-over-Quarter Portfolio Changes
JANA Partners Management, LP reported a disclosed portfolio value of approximately $1.9 billion in its latest SEC Form 13F-HR filing for Q2 2026, up 18.5% quarter on quarter. Over the quarter, the fund initiated 1 new position, bought more shares in 5 holdings, trimmed 3 holdings, and exited 1 position.
JANA Partners Management, LP's top buy was a new stake in Everpure INC (P) , equal to 4.1% of the disclosed portfolio. Its top sell was Fiserv INC (FISV) . The fund sold 17.4% of its previously reported shares, reducing the position's portfolio weight by 6.0 percentage points.
New PositionsQ2 2026
Securities disclosed for the first time in Q2 2026 that were not present in the prior 13F-HR filing.
| Company | Ticker | Initial Portfolio Weight | History |
|---|---|---|---|
| EVERPURE INC | P | 4.1% | History → |
Top BuysQ2 2026
The fund's top buys among existing positions in Q2 2026. Ranked by portfolio-weight impact, with the percentage of additional shares shown separately.
| Company | Ticker | Portfolio Weight Change | More Shares | History |
|---|---|---|---|---|
| ALKAMI TECHNOLOGY INC | ALKT | +1.1% | +24.2% | History → |
| LAMB WESTON HLDGS INC | LW | +-0.9% | +7.7% | History → |
| MARKEL GROUP INC | MKL | +-1.1% | +1.9% | History → |
| COOPER COS INC | COO | +-2.4% | +0.5% | History → |
| RAPID7 INC | RPD | +0.6% | +0.1% | History → |
Top SellsQ2 2026
The fund's top sells among positions it retained in Q2 2026. Ranked by portfolio-weight impact. Full exits are listed separately.
| Company | Ticker | Portfolio Weight Change | Shares Sold | History |
|---|---|---|---|---|
| FISERV INC | FISV | -6.0% | 17.4% | History → |
| MERCURY SYS INC | MRCY | 6.8% | 3.6% | History → |
| STATE STR SPDR S&P 500 ETF T | SPY | -0.5% | 0.2% | History → |
Full ExitsQ2 2026
Positions present in the prior 13F-HR filing that no longer appear in Q2 2026.
| Company | Ticker | Last-Reported Portfolio Weight |
|---|---|---|
| ENHABIT INC | EHAB | 1.8% |
Net Portfolio Value ChangeQ2 2026
- $1.6BPrior quarter
- $1.9BCurrent quarter
- +$0.3BNet delta
- +18.5%% change
Methodology & FAQ
How JANA Partners Management, LP Quarterly Changes Are Computed
All deltas are sourced from sequential SEC Form 13F-HR filings for JANA Partners Management, LP: each row joins the most recent filing against the immediately preceding quarterly filing for the same fund. Share-count changes reflect reported trading activity, while portfolio weights can also move because of market price changes. Portfolio weights are normalized to exclude listed options for comparability. A complete description, including how confidential treatment filings are handled, is documented in the Methodology.
What stocks did JANA Partners Management, LP buy in Q2 2026?
In Q2 2026, JANA Partners Management, LP initiated 1 new position (EVERPURE INC (P)); bought more shares of ALKAMI TECHNOLOGY INC (ALKT), LAMB WESTON HLDGS INC (LW), MARKEL GROUP INC (MKL), COOPER COS INC (COO), RAPID7 INC (RPD).
What stocks did JANA Partners Management, LP sell in Q2 2026?
In Q2 2026, JANA Partners Management, LP fully sold 1 position (ENHABIT INC (EHAB)); reduced holdings in FISERV INC (FISV), MERCURY SYS INC (MRCY), STATE STR SPDR S&P 500 ETF T (SPY).
Which positions did JANA Partners Management, LP initiate in Q2 2026?
JANA Partners Management, LP established 1 new position in Q2 2026: EVERPURE INC (P, 4.1%).
Which existing positions saw the largest allocation increases for JANA Partners Management, LP in Q2 2026?
Of 5 existing positions with share-count increases in Q2 2026, the largest were: ALKAMI TECHNOLOGY INC (ALKT, +1.1% weight, +24.2% shares), LAMB WESTON HLDGS INC (LW, +-0.9% weight, +7.7% shares), MARKEL GROUP INC (MKL, +-1.1% weight, +1.9% shares), COOPER COS INC (COO, +-2.4% weight, +0.5% shares), RAPID7 INC (RPD, +0.6% weight, +0.1% shares).
Which positions did JANA Partners Management, LP fully exit in Q2 2026?
JANA Partners Management, LP fully exited 1 position in Q2 2026: ENHABIT INC (EHAB, last-reported weight 1.8%).
Which existing positions saw the largest allocation reductions for JANA Partners Management, LP in Q2 2026?
Of 3 existing positions with share-count reductions in Q2 2026, the largest were: FISERV INC (FISV, -6.0% weight, -17.4% shares), MERCURY SYS INC (MRCY, 6.8% weight, -3.6% shares), STATE STR SPDR S&P 500 ETF T (SPY, -0.5% weight, -0.2% shares).
Do quarter-over-quarter 13F allocation changes constitute explicit trading signals?
No. Quarter-over-quarter changes reflect a combination of active trading and market price movement. A weight increase can result from price appreciation alone, without the manager adding shares. Share-count delta is the cleaner indicator of explicit trading activity. All deltas on this page are sourced from sequential SEC Form 13F-HR filings.