Notable companies reporting before the opening bell on Friday include First Horizon National (FHN), General Electric (GE), Johnson Controls (JCI), McMoRan Exploration (MMR), Morgan Stanley (MS), Parker Hannifin (PH), Rockwell Collins (COL), Schlumberger (SLB), State Street Corp (STT), SunTrust Banks (STI), and Webster Financial (WBS).
Yahoo Inc will buy blogging service Tumblr for $1.1 billion cash, giving the Internet pioneer a much-needed social …

