Merck&Co Stock rose by 3.01% to trade at $81.49 by 09:30 (14:30 GMT) on Wednesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was 34.45K. Merck&Co has traded in a range of $81.43 to $81.52 on the day.
The stock has traded at $82.4000 at its highest and $74.2100 at its lowest during the past seven days.
