Institutional shares held 31.8 Million
125K calls
7.9K puts
Total value of holdings $326M
$1.28M calls
$81K puts
Market Cap $462M
45,020,100 Shares Out.
Institutional ownership 70.68%
# of Institutions 166


Latest Institutional Activity in HDSN

Top Purchases

Q2 2025
Royal Bank Of Canada Shares Held: 838K ($8.6M)
Q2 2025
Westerly Capital Management, LLC Shares Held: 2M ($20.5M)
Q2 2025
Arrowstreet Capital, Limited Partnership Shares Held: 1.11M ($11.4M)
Q2 2025
Oaktree Capital Management LP Shares Held: 563K ($5.77M)
Q2 2025
Janus Henderson Group PLC Shares Held: 582K ($5.97M)

Top Sells

Q2 2025
D. E. Shaw & Co., Inc. Shares Held: 792K ($8.12M)
Q2 2025
Aqr Capital Management LLC Shares Held: 331K ($3.4M)
Q2 2025
Two Sigma Investments, LP Shares Held: 353K ($3.62M)
Q2 2025
Two Sigma Advisers, LP Shares Held: 394K ($4.04M)
Q2 2025
Marathon Capital Management Shares Held: 249K ($2.56M)

About HDSN

Hudson Technologies, Inc. a refrigerant services company, provides solutions to recurring problems within the refrigeration industry primarily in the United States. The company's products and services include refrigerant and industrial gas sales; refrigerant management services consisting primarily of reclamation of refrigerants, re-usable cylinder refurbishment, and hydrostatic testing services; and RefrigerantSide services comprising system decontamination to remove moisture, oils, and other contaminants. It also offers SmartEnergy OPS service, a web-based real time continuous monitoring service for facility's refrigeration systems and other energy systems applications; and Chiller Chemistry and Chill Smart services. In addition, the company participates in the generation of carbon offset projects. It serves commercial, industrial, and governmental customers, as well as refrigerant wholesalers, distributors, contractors, and refrigeration equipment manufacturers. Hudson Technologies, Inc. was incorporated in 1991 and is headquartered in Woodcliff Lake, New Jersey.


Insider Transactions at HDSN

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
26.3K Shares
From 7 Insiders
Grant, award, or other acquisition 19.1K shares
Open market or private purchase 2.5K shares
Exercise of conversion of derivative security 4.74K shares
Sell / Disposition
3.71K Shares
From 1 Insiders
Payment of exercise price or tax liability 3.71K shares

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