JANA Partners Management, LP In its 13F for Q3 2024 (holdings as of September 30, 2024, filed November 14, 2024), JANA Partners Management, LP reported 11 stock positions worth $1.8 billion . Its top holding was Trimble (TRMB) at 17.1% of the portfolio, followed by SS SPDR S&P 500 ETF Trust-US (SPY, 15.5% ) and Mercury Systems (MRCY, 14.5% ). Compared with Q2 2024, it opened 1 new position, sold out of 2, added to 6 and reduced 2. The biggest buy was a new position in Lamb Weston (LW) and the biggest sale Frontier Communications Pare (FYBR, shares −59% ).
Location NEW YORK, NY
CIK 0001998597
Portfolio Value $1.8B (Q3 2024) Holdings 11 stocks · $1.8B Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q2 2024 TRMB Trimble Inc. 4,880,944 $303.1M Add +16.8% SPY SS SPDR S&P 500 ETF Trust-US 478,963 $274.8M Add +9.1% MRCY Mercury Systems Inc. 6,941,565 $256.8M Add +0.2% LW Lamb Weston Holdings Inc. 3,526,754 $228.3M New THS Treehouse Foods Inc. 4,910,950 $206.2M No change RPD RAPID7 Inc. 3,655,540 $145.8M Add +34.2% FYBR Frontier Communications Pare 3,910,213 $138.9M Reduce -59.2% FIS Fidelity National Info Serv 1,586,929 $132.9M Reduce -49.5% WOLF Wolfspeed Inc. 6,165,933 $59.8M No change EHAB Enhabit Inc. 2,137,145 $16.9M Add +2.7% FTRE Fortrea Holdings Inc. 692,408 $13.8M Add +0.3%
Options reported separately and not counted above: LW calls ($149.0M).
Portfolio Sells Q2 2024 → Q3 2024 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▲ FYBR Frontier Communications Pare Reduce -59.2% 7.82% −6.85 FIS Fidelity National Info Serv Reduce -49.5% 7.48% −6.37 BL Blackline Inc. Sold out 0.00% −3.27 QDEL Quidelortho Corp. Sold out 0.00% −1.99
Portfolio Buys Q2 2024 → Q3 2024 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▼ LW Lamb Weston Holdings Inc. New 12.85% +12.85 MRCY Mercury Systems Inc. Add +0.2% 14.45% +3.52 TRMB Trimble Inc. Add +16.8% 17.05% +3.39 SPY SS SPDR S&P 500 ETF Trust-US Add +9.1% 15.46% +1.49 RPD RAPID7 Inc. Add +34.2% 8.20% +1.32 EHAB Enhabit Inc. Add +2.7% 0.95% −0.14 FTRE Fortrea Holdings Inc. Add +0.3% 0.78% −0.16
Options Activity Q2 2024 → Q3 2024 Security Type Change vs Q2 2024 Underlying Shares Value ▼ LW Lamb Weston Holdings Inc. call New 2,302,000 $149.0M
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 10 $1.9B MRCY, COO, SPY, LW, FISV Q1 2026 Amended 11 $1.7B MRCY, COO, FISV, SPY, LW Q4 2025 12 $1.9B MRCY, COO, SPY, LW, MKL Q3 2025 12 $2.1B MRCY, LW, MKL, SPY, COO Q2 2025 10 $2.0B LW, MRCY, SPY, MKL, TRMB Q1 2025 10 $1.9B LW, SPY, MRCY, MKL, TRMB Q4 2024 10 $1.9B LW, TRMB, MRCY, SPY, MKL Q3 2024 11 $1.8B TRMB, SPY, MRCY, LW, THS Q2 2024 12 $1.7B FYBR, SPY, FIS, TRMB, MRCY Q1 2024 10 $1.8B SPY, FIS, TRMB, FYBR, MRCY