bluebird bio appointed John O. Agwunobi, M.D. and Douglas A. Melton, Ph.D. to its Board of Directors.
Comey's testimony? U.K. elections? Eurozone news? These can be new buying opportunities, says Jim Cramer.
Here are Tuesday's top research calls, including upgrades for Bluebird Bio and Tenet Healthcare, a downgrade for Cognizant and new coverage of Hormel.