Pfizer (NYSE:PFE) fell by 3.01% to trade at $40.88 by 11:56 (16:56 GMT) on Thursday on the NYSE exchange.
The volume of Pfizer shares traded since the start of the session was 12.70M. Pfizer has traded in a range of $40.89 to $41.79 on the day.
The stock has traded at $43.2400 at its highest and $40.8200 at its lowest during the past seven days.
