Investing.com - Merck&Co fell by 3.05% to trade at $74.00 by 10:29 (14:29 GMT) on Monday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was $2.47M. Merck&Co has traded in a range of $73.96 to $75.36 on the day.
The stock has traded at $83.5000 at its highest and $73.9700 at its lowest during the past seven days.