Investing.com - Merck&Co fell by 3.04% to trade at $81.07 by 10:02 (14:02 GMT) on Wednesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $1.10M. Merck&Co has traded in a range of $81.07 to $83.21 on the day.
The stock has traded at $85.1000 at its highest and $81.0500 at its lowest during the past seven days.