EDAP TMS, Perma-Fix Environmental Services Gapping Up Tuesday

Here are stocks that gapped up today with opening prices significantly higher than the close on the previous trading day:

• EDAP TMS (NASDAQ:EDAP) opened at $1.85 after closing the previous trading session at $1.62, gapping up. Trading at a volume of 1.1 million, the stock price is up 11.1%. The share price has been falling in the last month, down 59 cents (-24.7%) from $2.39 on March 16, 2012. The stock has climbed a step closer to its 50-day moving average, sitting at just 90.4% of the mark.

• Perma-Fix Environmental Services (NASDAQ:PESI) gapped up today, opening at $1.60 after closing the previous trading session at $1.42. Shares are up 9.2% and trading at a volume of 181,071. Shares are down over the last two months as the price has dropped 20 cents (-11.4%) from a price of $1.75 on February 16, 2012. The stock has moved up across its 200-day moving average of $1.53 today.