Nasdaq futures lead stock drop.Pfizer, CVS boost outlooks.Oil continues its upward climb touching the $65 per barrel level.Gold was modestly lower trading at $1,782 an ounce. U.S. stock futuresslipped in early trading as investors digested a fresh batch ofcorporate earnings.For tech, Tuesday may mark the second day of selling, even as the Dow and S&P posted gains, as investors piled into cyclical stocks and out of higher growth names.Stocks making the biggest moves in the premarket: CVS Health,