Upgrades:

Downgrades:

Yahoo! (YHOO) downgraded to Neutral from Buy at Mizuho; target lowered to $37 from $40

Yahoo! (YHOO) downgraded to Neutral from Buy at B. Riley & Co.

Twitter (TWTR) downgraded to Underweight from Equal-Weight at Morgan Stanley; target lowered to $24 from $36

Other:

IBM (IBM) reiterated at a Neutral at UBS; target lowered to $145 from $170

Facebook (FB) reiterated at a Buy at Jefferies; target raised to $130 from $120

Yahoo! (YHOO) target lowered to $44 from $45 at Axiom Capital

Yahoo! (YHOO) target lowered to $35 from $49 at Cowen

Verizon (VZ) target lowered to $54 from $57 at FBR Capital

Verizon (VZ) target lowered to $53 from $59 at Argus

Travelers (TRV) target raised to $120 from $115 at RBC Capital Mkts