Hudson Technologies shares trade publicly on the NASDAQ capital market under the ticker symbol HDSN. Over its public market history, the stock has experienced significant cyclical volatility driven by environmental regulatory shifts, changes in federal hydrofluorocarbon phase-down schedules, and fluctuations in refrigerant market pricing. As environmental policies increasingly restrict virgin refrigerant production, the company's valuation has seen major structural re-ratings reflecting its critical role in reclamation and compliance services within the American cooling supply chain.