UP AFTER EARNINGS: Aruba Networks (ARUN), up 14.6%... SourceFire (FIRE), 11.8%... Hewlett-Packard (HPQ), up 5.5%... AIG (AIG), 4%... ALSO HIGHER: Gardner Denver (GDI), up 5% after a Bloomberg report said KKR (KKR) offered $75 per share for the company... Texas Instruments (TXN), up 1.9% after announcing a 33% dividend increase and the company increased its share repurchase authorization by $5B... DOWN AFTER EARNINGS: Boingo Wireless (WIFI), down 23.8%... Volcano (VOLC), down 4.7%... ALSO LOWER: VIVUS (VVUS), down 2.9% after the EMA confirmed an October decision to decline a marketing authorization for the company's anti-obesity drug Qsiva... Herbalife (HLF), down 1.5% after a CNBC report said a key distributor may cut ties with the company.
Yahoo Inc will buy blogging service Tumblr for $1.1 billion cash, giving the Internet pioneer a much-needed social …