NEW YORK -- Investors continued a broad sell-off midway through the trading day as blue-chip companies reported disappointing earnings and offered dimmer outlooks for global growth.
The Dow Jones industrial average was down 226 points, or 1.7%, to 13,120, a level not seen since early September.
The broader Standard & Poor's 500 index lost 21 points, 1.4%, to 1,413. The Nasdaq was off 17 points, or 0.6%, to 3,000.
Among major comapnies to report weak third-quarter earnings was chemical giant DuPont Co. The company's profit fell to $10 million, or 1 cent a share, down from $452 million, or 48 cents, from the same period a year ago.
DuPont's stock lost $4.34, or nearly 9%, to $45.42, dragging the Dow lower.
Meanwhile, United Technologies Corp., supplier of technology to the building and aerospace industries, said its profit fell 3% in the third quarter, compared to the same period a year ago.