A volatile trading session ended with stocks mostly higher on Wednesday, even as Apple, the most valuable U.S. company, suffered its worst day of losses in nearly four years.
The Dow Jones industrial average .DJI gained 82.71 points, or 0.64 percent, to end unofficially at 13,034.49. The S&P 500 .SPX rose 2.23 points, or 0.16 percent, to finish unofficially at 1,409.28. But the Nasdaq Composite Index .IXIC dropped 22.99 points, or 0.77 percent, to close unofficially at 2,973.70.
Apple's stock fell 6.4 percent to $538.79, its largest daily percentage drop since December 17, 2008.
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