ST. PAUL, Minn.--(BUSINESS WIRE)--Cardiovascular Systems, Inc. (CSI) (Nasdaq: CSII), a medical device company developing and commercializing innovative interventional treatment systems for vascular disease, has been added to the Russell 3000® Index, which measures the performance of the 3,000 largest U.S. companies based on total market capitalization. The Russell Investment Group recently reconstituted its indexes, and Russell 3000 membership went into effect June 26, 2009 and will remain in place for one year.
