Shares of Ion Geophysical Corp (NYSE:IO) traded down 1.12% during mid-day trading on Friday, hitting $4.40. 44,426 shares of the stock were exchanged. The stock’s market capitalization is $52.23 million. Ion Geophysical Corp has a 52 week low of $3.87 and a 52 week high of $8.40. The stock’s 50-day moving average is $4.39 and its 200-day moving average is $5.50.