Updated ” US stocks pressured as mood turns cautious ahead of Yellin speech”……plenty of opp to trade today…would be considered a very choppy day….and the articles have cont today stating Facebook stock still undervalued..looks to me like they were selling short and selling to investors on July 28 in the 127 128 area on very heavy vol of 78 million shares…we’ll see on the undervalued call on this one….where was the b couple years ago below 50…a b and hold….