Facebook +1% AH on Credit Suisse upgrade

• Credit Suisse has upgraded Facebook (NASDAQ:FB) to Outperform, and set an $87 PT, ahead of Wednesday's Q1 report.
• Shares rose 3.9% in regular trading, aided by a moderate tech stock rally and a report Facebook will finally be launching a targeted ad network for 3rd-party mobile apps at the end of the month.
• After taking Credit Suisse's move into account, 37 of the 44 sell-side analysts covering Facebook now have bullish ratings, per Thomson/First Call. The other 7 are neutral.