13F

Investor

HARVEST MANAGEMENT LLC

CIK 0001140315 · filed 2026-05-15 · SEC filing

13F book

$206.4M

Positions

43

23 new · 29 sold

Largest name

18.2%

Electronic Arts Inc. · EA

Est. mark

−$502.7K

Price effect on 20 names still held. Flow −$81.7M.
NameTickerSharesValueWeightEst. markChange
Electronic Arts Inc.EA183.9K$37.5M18.2%−$84.6KCut−$1.56M
Norfolk Southn Corp72.6K$20.8M10.1%−$124.9KCut−$1.77M
Janus Henderson Group Plc310K$15.9M7.7%New
Terns Pharmaceuticals Inc257.5K$13.6M6.6%New
Warner Bros. Discovery, Inc.WBD457.3K$12.6M6.1%−$621.9KCut−$4.76M
Hologic Inc163.3K$12.3M6.0%$179.6KCut−$1.81M
Sealed Air Corp New269.1K$11.3M5.5%$62.3KAdded$7.15M
Clearwater Analytics Hldgs I450K$10.6M5.2%New
Penumbra IncPEN18K$5.91M2.9%New
Arcellx Inc50K$5.74M2.8%New
Tri Pointe Homes Inc120K$5.61M2.7%New
Amicus Therapeutics Inc247.4K$3.58M1.7%$54.4KCut$17.4K
Stellar Bancorp Inc88K$3.22M1.6%New
Centessa Pharmaceuticals Plc80K$3.18M1.5%New
Webster Finl Corp43.5K$3.02M1.5%New
Apellis Pharmaceuticals Inc70K$2.82M1.4%New
Two Hbrs Invt Corp200K$2.28M1.1%New
Masimo Corp11K$1.96M0.9%New
Semrush Hldgs Inc147.8K$1.76M0.9%$7.39KCut−$1.21M
Day One Biopharmaceuticals I75K$1.61M0.8%New
SkyWater Technology, LLCSKYT51.6K$1.41M0.7%New
Peakstone Realty Trust50K$1.04M0.5%New
Thermon Group Hldgs Inc19.2K$967.7K0.5%New
Revolution Medicines Inc9.52K$926.2K0.4%New
Unifirst Corp Mass3K$754.8K0.4%New
Cytokinetics IncCYTK11K$725K0.4%$26.1KCut−$139.1K
Boeing Co3.5K$696.5K0.3%−$63.4KCut−$2.29M
Udemy Inc129K$596K0.3%−$135.3KAdded−$47.5K
Paramount Skydance CorpPSKY60K$541.2K0.3%New
Lionsgate Studios Corp.LION55K$527.5K0.3%$25.3KCut−$111.7K
Ceco Environmental CorpCECO8K$476.6K0.2%New
Geopark LtdGPRK50K$475K0.2%$104.5KCut−$1.25M
Nvidia CorpNVDA2.35K$409.3K0.2%−$28.4KCut−$32.7K
Kennedy-Wilson Holdings Inc34.4K$372.2K0.2%$39.6KCut$33.8K
Supernus Pharmaceuticals, Inc.SUPN7.1K$367K0.2%$14.1KCut−$179.7K
Worthington Stl Inc12K$364.2K0.2%New
Albertsons Cos IncACI21.2K$361.2K0.2%−$2.76KCut−$153.9K
Silicon Motion Technology CORPSIMO2.95K$331.3K0.2%$57.8KCut−$132.2K
Viavi Solutions Inc.VIAV9.75K$324.4K0.2%New
Select Med Hldgs Corp19.7K$320.9K0.2%$28.4KCut−$124.6K
United Rentals, Inc.URI380$276.9K0.1%−$30.7KCut−$34.7K
Analog Devices IncADI681$216.7K0.1%New
Lumen Technologies, Inc.LUMN12.5K$87.2K0.0%−$10.3KHeld

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.