I've noticed this on several trades.
Despite the stock going down .86% on the day, MRK put options for Dec 16 made a profit of 1 penny. Aren't options supposed to have MORE action than the stock? WTF?
PFE went down .36% by the time I'm writing this, and my puts actually LOST money for the day! a 7.3% loss on the puts.
Meanwhile, KO dropped much less than MRK, and I had calls, and they got killed.