I thought EXPE might get a nice run today, so I bought a Feb 55 call option. This was at 9:34, and the stock was trading about 54.50 or so, and the option was trading at about 3. At the close of trading today, the stock was trading above 56, and the option is trading about 2.5. The stock has move at least 1 1/2 points upward, but the call price has dropped about 1/2 point. Obviously over the period of six hours it's not going to lose a lot of time value. The question is, do these option specialists know what they're doing? Or is the stock moving so fast that it's impossibe for the specialist to know how to fairly price the options? Or is the option being overpriced early because the stock is rallying? (The stock moved 2 1/2 points in the first 15 minutes of trading) On the flip side, I bought a TYC put, and picked up about 3 1/2 points on an associated move of about 4 points. I only trade options occasionally, but I would like to know how to avoid situations like the EXPE trade in favor of the TYC trade.