ION Geophysical Corp. (IO) adds 14 cents to $6.84 and today’s options order flow on the Houston-based seismic data acquisition instruments-maker includes a multi-exchange sweep of 3,096 Dec 6 puts for 10 cents when the market was 5 to 10 cents. 6,000 now traded against 73 contracts in open interest. Dec 6 puts on IO are 12.3 percent OTM and expiring at the end of next week. Meanwhile, implied volatility in the options on the stock is up 21 percent to 86. Bearish trading might be a play on a Dec 9 conference call scheduled to discuss the company’s business outlook.