Upgrades:
Apple (AAPL) upgraded to Buy from Hold at Societe Generale, target $140
Downgrades:
Google (GOOGL) downgraded to Hold from Buy at Pivotal Research, target lowered from $640 to $570
Other:
Yahoo! (YHOO) reiterated at Hold at Pivotal Research Group, target lowered from $49 to $42
Twitter (TWTR) reiterated at Buy at Pivotal Research Group, target lowered from $50 to $41
Facebook (FB) reiterated at Buy at Pivotal Research Group, target lowered from $107 to $105