Large blocks of out-of-the-money Pfizer (PFE) calls have traded in recent action. Shares are up 21 cents to $15.23 and it includes: 50K Dec 18 calls at 15 cents, 50K Dec 17 calls at 30 cents, 50K Sep 17 calls at 10 cents, 50K Aug 16 calls at 11 cents, and 30K Dec 16 calls at 58 cents. Sources tell us this is a brokerage firm crossing blocks for account swaps, Not a spread or directional play on the pharmaceutical maker.