Pfizer (PFE) and Merck (MRK) are giving the Dow a boost and options are actively traded in both pharmaceutical companies late Thursday. Pfizer (PFE) is up 9.5 percent after the co. announced that trials of its Sutent were stopped early after the treatment showed significant benefit in pancreatic islet cell tumor patients. PFE options volume is running at 2X the typical levels, with 114K contracts traded and 78 percent hitting on the call side of the options chain. MRK is up 8.4 percent and volume is running at 2X the normal, with 32K contracts traded and call volume representing 74 percent of the activity.