Notable companies reporting before the opening bell on Tuesday include Cablevision (CVC), CVS Caremark (CVS), Emerson Electric (EMR), Firstenergy (FE), Fossil (FOSL), Marsh & McLennan (MMC), Pepco (POM), PG&E (PCG), and Tenet Healthcare (THC).
Apple's ability to shelter billions of dollars of income from tax has depended on an unusual loophole in the Irish …