Wellcare Healtch (WCG) is up 50 cents to $14.95 and 2100 calls traded on the managed healthcare company, compared to just 55 puts. Today’s call volume represents 7.5X (757 percent) the expected for this time of day. May 17.5 calls are the most actives. The increased volume seems to include a mix of buyers and sellers and comes amid renewed takeover chatter–Briefing.