Hudson Technologies is trading at $4.38, down 16.16%, after its October 28 third-quarter report missed revenue and earnings expectations. - Revenue was $59.4 million versus $74.98 million expected; diluted EPS was $0.05 versus $0.21 expected. - Revenue fell 20% year over year as HFC selling prices declined 17% and sales volume fell 9%; gross margin narrowed to 25% from 32%. - Management said ample channel inventory and muted demand weighed on pricing and sales.