Hudson Technologies (HDSN) shares rallied 8.9% in the last trading session to close at $7.93. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 6.9$7.50 to $9.00. Per the analyst, hydrofluorocarbon (HFC) pricing appears to be firming as the summe ...