Investing.com - Merck&Co fell by 3.43% to trade at $74.35 by 09:32 (13:32 GMT) on Wednesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $498.71K. Merck&Co has traded in a range of $74.33 to $75.46 on the day.
The stock has traded at $77.5900 at its highest and $66.7600 at its lowest during the past seven days.