Upgrades:
Twitter (TWTR) upgraded to Buy from Hold at Axiom Capital; target lowered to $37 from $40
Downgrades:
Other:
Yahoo! (YHOO) target raised to $41 from $39 at Axiom Capital
IBM (IBM) target lowered to $155 from $170 at RBC Capital Mkts
Johnson & Johnson (JNJ) resumed with a Neutral at Piper Jaffray; target $105