Investing.com - Merck&Co Stock fell by 3.03% to trade at $69.39 by 11:59 (15:59 GMT) on Thursday on the NYSE exchange.
The volume of Merck&Co shares traded since the start of the session was 6.05M. Merck&Co has traded in a range of $69.26 to $72.86 on the day.
The stock has traded at $80.1600 at its highest and $67.1200 at its lowest during the past seven days.