Merck&Co Stock rose by 3.13% to trade at $80.97 by 14:24 (18:24 GMT) on Wednesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was 4.35M. Merck&Co has traded in a range of $78.35 to $80.98 on the day.
The stock has traded at $81.9000 at its highest and $72.9900 at its lowest during the past seven days.
