Shares of Apple Inc. AAPL, -6.63% tumbled 5.8% in premarket trade, after fiscal fourth-quarter results beat expectations, but the technology giant spooked investors by saying it will no longer disclose unit sales. The stock’s price decline would shave about 88 points off the Dow Jones Industrial Average’s DJIA, -0.43% price, while Dow futures YMZ8, -0.38% rose 166 points.
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