Stocks to watch Thursday: National Semi, Vail By: MarketWatch March 09, 2011 at 18:51 PM EST Companies that are expected to see active trade in Thursday’s session are National Semi, Smith & Wesson, Vail Resorts and Human Genome Sciences. Read More >> Related Stocks: American International Group Gsk Plc ADR H&R Block Pall Corp Vail Resorts Zumiez Inc