Capstone is making a bullish call on Facebook (FB -0.8%), upgrading shares to Buy after airing...

|About: Facebook (FB)|By:, SA News Editor

Capstone is making a bullish call on Facebook (FB -0.8%), upgrading shares to Buy after airing concerns at higher levels about the company's valuation, ad monetization, and growth in developed markets. But that hasn't kept Facebook from falling below $19; shares are now down over 50% from IPO levels.