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Who owns Hudson Technologies (HDSN) stock

147 funds reported Hudson Technologies (HDSN) shares in their latest 13F filings, worth $197M in all. The largest holder is Hartree Partners, LP ($25.3M). Last quarter 65 funds added to their stakes and 74 cut them.

Largest holders of HDSN (13F)Largest holders of HDSN (13F)Hartree Partners, LP$25.3MWesterly Capital Management, LLC$19.4MBlackRock$16.3MVanguard Group$16.0MDimensional Fund Advisors LP$11.3MVanguard Capital Management LLC$9.5MRenaissance Technologies LLC$8.3MAmerican Century Companies$6.7MGeode Capital Management, LLC$5.7MState Street$5.1M

Largest holders (13F)

FundSharesValueChangeQuarter
Hartree Partners, LP4,411,889$25.3Mincrease2026-06-30
Westerly Capital Management, LLC3,380,000$19.4Mincrease2026-06-30
BlackRock2,840,272$16.3Mdecrease2026-06-30
Vanguard Group2,338,710$16.0Mdecrease2025-12-31
Dimensional Fund Advisors LP1,967,914$11.3Mdecrease2026-06-30
Vanguard Capital Management LLC1,654,259$9.5Mdecrease2026-06-30
Renaissance Technologies LLC1,442,115$8.3Mdecrease2026-06-30
American Century Companies1,169,462$6.7Mdecrease2026-06-30
Geode Capital Management, LLC995,011$5.7Mincrease2026-06-30
State Street895,776$5.1Mdecrease2026-06-30
Arrowstreet Capital, Limited Partnership777,989$4.5Mdecrease2026-06-30
Caspian Capital LP728,306$4.2Munchanged2026-06-30
Qube Research & Technologies721,847$4.1Mincrease2026-06-30
Citadel Advisors LLC574,266$3.3Mincrease2026-06-30
Jacobs Levy Equity Management506,591$2.9Mincrease2026-06-30

Hudson Technologies' latest quarter

Hudson Technologies, Q3 2026: revenue $59.4M (-20% year over year), operating margin 5.5%, net earnings $2.0M, operating cash flow $10.1M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most HDSN stock?

By the latest 13F filings: Hartree Partners, LP ($25.3M); Westerly Capital Management, LLC ($19.4M); BlackRock ($16.3M); Vanguard Group ($16.0M); Dimensional Fund Advisors LP ($11.3M).

What is the short interest in HDSN?

2,594,444 shares were sold short at the 2026-10-15 settlement, -3.49% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.