HUDSON TECHNOLOGIES INC (HDSN) Institutional Ownership Changes & 13F Activity

HUDSON TECHNOLOGIES INC (HDSN). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Hartree Partners, Lp, Westerly Capital Management, Llc, Caspian Capital Lp, D. E. Shaw & Co., Inc., and Lazard Asset Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Algert Global LlcBuy+19,340+81.4%43,105$295.27KQ4 2025Aug 11, 2026
Sunbelt Securities, Inc.Buy+27—27$185.00Q4 2025Feb 20, 2026
Raymond James Financial IncBuy+39,609—39,609$271.32KQ4 2025Feb 18, 2026
Ep Wealth Advisors, LlcBuy+20,417—20,417$139.86KQ4 2025Feb 18, 2026
Hartree Partners, LpBuy+3,800,000—3,800,000$26.03MQ4 2025Feb 17, 2026
Westerly Capital Management, LlcBuy+2,550,000—2,550,000$17.47MQ4 2025Feb 17, 2026
Caspian Capital LpBuy+728,306—728,306$4.99MQ4 2025Feb 17, 2026
D. E. Shaw & Co., Inc.Buy+582,780—582,780$3.99MQ4 2025Feb 17, 2026
Lazard Asset Management LlcBuy+431,769—431,769$2.96MQ4 2025Feb 17, 2026
Public Employees Retirement System Of OhioBuy+410,099—410,099$2.81MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+391,889—391,889$2.68MQ4 2025Feb 17, 2026
Bridgeway Capital Management, LlcBuy+378,255—378,255$2.59MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+339,352—339,352$2.32MQ4 2025Feb 17, 2026
683 Capital Management, LlcBuy+335,000—335,000$2.29MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+189,061—189,061$1.30MQ4 2025Feb 17, 2026
Two Sigma Advisers, LpBuy+167,300—167,300$1.15MQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+163,703—163,703$1.12MQ4 2025Feb 17, 2026
Credit Agricole S ABuy+140,000—140,000$959.00KQ4 2025Feb 17, 2026
Russell Investments Group, Ltd.Buy+138,687—138,687$950.00KQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+135,400—135,400$927.49KQ4 2025Feb 17, 2026
Quantinno Capital Management LpBuy+121,947—121,947$835.34KQ4 2025Feb 17, 2026
Point72 Asset Management, L.P.Buy+113,263—113,263$775.85KQ4 2025Feb 17, 2026
State Of Wisconsin Investment BoardBuy+99,764—99,764$683.38KQ4 2025Feb 17, 2026
Bank Of America CorpBuy+83,404—83,404$571.32KQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+80,083—80,083$548.57KQ4 2025Feb 17, 2026
Price T Rowe Associates IncBuy+73,706—73,706$505.00KQ4 2025Feb 17, 2026
Ameriprise Financial IncBuy+71,167—71,167$487.49KQ4 2025Feb 17, 2026
Inspire Investing, LlcBuy+68,583—68,583$469.79KQ4 2025Feb 17, 2026
Trexquant Investment LpBuy+59,580—59,580$408.12KQ4 2025Feb 17, 2026
Kerrisdale Advisers, LlcBuy+57,622—57,622$394.71KQ4 2025Feb 17, 2026
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Frequently asked questions about HDSN activity

  • Which institutional owners are buying HDSN?

    Institutional owners buying HDSN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in HDSN activity?

    "Buy" means an investor increased their reported position in HDSN compared to the prior reporting period. This reflects growing exposure to HUDSON TECHNOLOGIES INC (HDSN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in HDSN increasing?

    Institutional interest in HDSN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.