The stock underperformed when compared to some of its competitors Tuesday, as Roche Holding AG Part. Cert.
rose 0.05% to $323.69, Merck & Co. Inc.
fell 2.67% to $91.89, and Pfizer Inc.
fell 2.35% to $50.66. Trading volume (9.2 M) eclipsed its 50-day average volume of 7.7 M.