2 Gene Therapy Stocks Oppenheimer Just Said Will 'Outperform' By: Benzinga via Benzinga May 22, 2015 at 09:10 AM EDT In separate reports published Friday, Oppenheimer analysts initiated coverage of two gene therapy stocks - Cellectis SA (NASDAQ: CLLS) ... Read More >> Related Stocks: Cellectis S.A. ADR Uniqure Ord Shs