Investing.com - Merck&Co fell by 3.04% to trade at $73.19 by 04:18 (17:18 GMT) on Thursday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $6.92M. Merck&Co has traded in a range of $73.15 to $75.07 on the day.
The stock has traded at $76.3300 at its highest and $73.0100 at its lowest during the past seven days.