DuPont (NYSE:DWDP) fell by 6.80% to trade at $55.25 by 09:30 (14:30 GMT) on Thursday on the NYSE exchange.
The volume of DuPont shares traded since the start of the session was 960.48K. DuPont has traded in a range of $54.46 to $55.25 on the day.
The stock has traded at $60.0700 at its highest and $54.4600 at its lowest during the past seven days.
