Neuberger Berman Group LLC increased its position in shares of Ion Geophysical Corporation (NYSE:IO) by 4.0% during the first quarter, according to its most recent disclosure with the Securities and Exchange Commission. The institutional investor owned 186,140 shares of the oil and gas company’s stock after buying an additional 7,090 shares during the period. Neuberger Berman Group LLC owned approximately 1.58% of Ion Geophysical Corporation worth $903,000 at the end of the most recent quarter.