Investing.com - Merck&Co fell by 3.03% to trade at $81.97 by 00:32 (13:32 GMT) on Tuesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $659.34K. Merck&Co has traded in a range of $81.81 to $82.65 on the day.
The stock has traded at $85.1100 at its highest and $81.8300 at its lowest during the past seven days.