200341:false:false:false:false:false:false:false:false:false:!:false:-1:-1

Plaintiffs seeking to certify a class of investors in a Rule 10b-5 action must establish loss causation by a preponderance of the evidence in order to be entitled to the fraud-on-the market presumption of reliance.
Contributed in January 2011 & last edited in June 2011 by David Gold
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