Gene therapy stocks surge on Roche-Spark deal By: MarketWatch February 25, 2019 at 09:28 AM EST Shares of gene therapy companies surged in premarket trade Monday, buoyed by the news of Roche Holding AG’s acquisition of Spark Therapeutics Inc. Read More >> Related Stocks: Bluebird Bio Crispr Therapeutics Ag Intellia Thera CS Nasdaq Biotechnology Ishares ETF Novartis Ag ADR Pfizer Roche Holding AG Basel American Depositary Shares Spark Therap Uniqure Ord Shs