Shares of Ion Geophysical Corporation remained flat at $9.25 during midday trading on Tuesday. 51,363 shares of the company’s stock traded hands. The stock’s market capitalization is $109.92 million. Ion Geophysical Corporation has a 52 week low of $3.20 and a 52 week high of $9.85. The firm has a 50 day moving average price of $6.61 and a 200 day moving average price of $4.88.