Sangamo BioSciences (SGMO -3.1%) takes a hit after being downgraded to Underweight from Neutral...

|About: Sangamo BioSciences, Inc. (SGMO)|By:, SA News Editor

Sangamo BioSciences (SGMO -3.1%) takes a hit after being downgraded to Underweight from Neutral on valuation at Piper Jaffray, saying the drug developer has limited clinical data coming through its pipeline this year.