Merck & Company (MRK) gains 1.09% Posted on April 10, 2021 By News Team Merck & Company (NYSE: MRK) shares gained 1.09% to end trading Friday at $76.31 per share – a net change of $0.82. Shares traded between $76.38 and $75.42 throughout the day. 7793308 shares of Merck & Company exchanged hands.