Upgrades:
Twitter (TWTR) upgraded to Buy from Hold at Pivotal Research Group, target $42
Google (GOOG) upgraded to Buy from Hold at Pivotal Research Group, target $610
Downgrades:
Verizon (VZ) downgraded to Neutral from Buy at Goldman, target lowered to $48 from $55
Other:
General Electric (GE) target lowered to $28 from $30 at RBC Capital Mkts
American Express (AXP) initiated with a Overweight at Morgan Stanley, target $110
3M (MMM) target raised to $190 from $164 at BofA/Merrill