By Jud Pyle, CFA, chief investment strategist for the Options News NetworkShares of Red Hat ( RHT) were up more than 9% today to $16.3, with about an hour left in the trading day. The company is set to announce earnings after the close Wednesday, and at least one investor is expressing a bullish view, buying calls looking for a potential bump in the stock. Looking at the April 17.5 calls, we find that more than 9,000 had traded in the first 35 minutes of trading this morning. Open interest in these calls is 861 according to the Sidewinder report at www.ONN.tv. As the day has worn on, the volume in the calls is now up to more than 18,000.