Merck&Co Stock rose by 3.12% to trade at $83.97 by 13:06 (17:06 GMT) on Monday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was 4.68M. Merck&Co has traded in a range of $80.84 to $83.97 on the day.
The stock has traded at $84.1200 at its highest and $78.2400 at its lowest during the past seven days.
