Investing.com - Merck&Co fell by 3.34% to trade at $79.25 by 09:39 (13:39 GMT) on Wednesday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $589.67K. Merck&Co has traded in a range of $79.25 to $80.14 on the day.
The stock has traded at $83.0700 at its highest and $76.9900 at its lowest during the past seven days.