Barry Rosenstein Portfolio: JANA Partners 13F Holdings (Q2 2026)
Checked against SEC EDGAR
JANA Partners reported 10 stock positions worth $1.9B as of Jun 30, 2026 in its 13F filed Aug 14, 2026. The top 10 make up 100% of the reported portfolio. Changes are compared with Q1 2026: 1 new, 3 added, 2 reduced, 1 sold out.
13F filings are due 45 days after each quarter ends, so these holdings can be up to four and a half months old by the time they are public. They list US-listed stocks and some other securities only: no shorts, cash, bonds or non-US shares, and options are left out here. This is a record of public filings, not investment advice.
Holdings
| Ticker | Company | % of portfolio | Value | Shares | Change compared with Q1 2026 |
|---|---|---|---|---|---|
| MRCY | MERCURY SYS INC | 25.46% | $484.3M | 3,958,849 | Reduced 4% |
| COO | COOPER COS INC | 13.51% | $256.9M | 3,582,480 | No change |
| SPY | STATE STR SPDR S&P 500 ETF T | 13.46% | $256.1M | 342,965 | No change |
| LW | LAMB WESTON HLDGS INC | 12.24% | $232.9M | 5,394,635 | Added 8% |
| FISV | FISERV INC | 9.44% | $179.6M | 3,662,080 | Reduced 17% |
| MKL | MARKEL GROUP INC | 7.88% | $149.9M | 76,743 | Added 2% |
| ALKT | ALKAMI TECHNOLOGY INC | 6.43% | $122.3M | 6,747,707 | Added 24% |
| FUN | SIX FLAGS ENTERTAINMENT CORP | 4.61% | $87.7M | 4,116,099 | No change |
| P | EVERPURE INC | 4.10% | $77.9M | 989,196 | New position |
| RPD | RAPID7 INC | 2.87% | $54.7M | 6,749,936 | No change |
Sold out
| Ticker | Company | % of portfolio | Value | Shares before | Change |
|---|---|---|---|---|---|
| ENHABIT INC | ENHABIT INC | 0.00% | $0 | 2,090,412 | Sold out |
Geopolitical news on Barry Rosenstein’s top holdings
- Fed to hit pause on rate hikes, but maybe not for long SPY
- Why the Fed may hold off on another rate hike despite high inflation SPY
- U.S. Treasury yields inch lower as investors look ahead to the Fed's rate decision SPY
- FOMC Meeting Puts Fed Interest Rate Decision in Focus as Inflation Rises SPY
- How the trade war with Canada is hitting US states—and could sway midterm elections SPY
- State AG Coalition Issues Multistate Guidance on Antidiscrimination Protections SPY
- Avigdor Liberman warns US could recognize Palestinian state, sanction Israel SPY
- Liberman warns US could recognize Palestinian state, sanction Israel within two years SPY
- Request for Information for 2028 Department of Defense (DoD) State Priorities Impacting Service Members and Their Families SPY
- Amendment of Domestic Very High Frequency Omnidirectional Range (VOR) Federal Airways V-16, V-35, V-37, V-53, V-133, V-136, V-143, V-259, V-310, V-364, V-409, V-415, V-454, and V-605; Eastern United States SPY
Source: SEC EDGAR filing 0000902664-26-003486 (CIK 1998597). Values are as reported in the filing.