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JANA Partners Management

· CIK 0001998597
13F Portfolio $1.6B AUM 10 positions Filed May 15, 2026 ← All Funds
Q1 2026 Q4 2025 · All 10 New 2 Exited
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
1 MRCY MERCURY SYS INC Industrials 4,107,424.0 $299.5M 18.65% NEW $72.91 +29.7%
2 COOPER COS INC 3,565,158.0 $254.9M 15.87% NEW $71.50
3 FISV FISERV INC Technology 4,435,605.0 $247.5M 15.41% NEW $55.80 -4.2%
4 SPY STATE STR SPDR S&P 500 ETF T Financial Services 343,665.0 $223.5M 13.92% NEW $650.34 +13.7%
5 LW LAMB WESTON HLDGS INC Consumer Defensive 5,008,635.0 $211.7M 13.18% NEW $42.26 +0.2%
6 MKL MARKEL GROUP INC Financial Services 75,307.0 $144.1M 8.97% NEW $1914.07 -3.6%
7 ALKT ALKAMI TECHNOLOGY INC Technology 5,431,388.0 $85.1M 5.30% NEW $15.67 +6.0%
8 SIX FLAGS ENTERTAINMENT CORP 4,116,099.0 $73.1M 4.55% NEW $17.75
9 RPD RAPID7 INC Technology 6,743,653.0 $37.2M 2.31% NEW $5.51 +13.1%
10 EHAB ENHABIT INC Healthcare 2,090,412.0 $29.5M 1.83% NEW $14.09 -2.1%

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Technology 28.9%
Financial Services 28.8%
Industrials 23.4%
Consumer Defensive 16.6%
Healthcare 2.3%