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Check out the companies making headlines before the bell:
CarMax (KMX) – The auto retailer's stock jumped 5.1% in premarket trading after CarMax beat estimates on the top and bottom lines for its latest quarter, as well as posting comparable dealer sales that were above analyst forecasts.
Tesla (TSLA) – Tesla shares rose 3.4% in the premarket after CEO Elon Musk said he has now sold enough stock to reach his goal of selling 10% of his shares. Over that time, however, Musk has actually increased his holdings in Tesla due to the exercising of options.
BlackBerry (BB) – BlackBerry reported a breakeven quarter, on an adjusted basis, compared with analyst forecasts of a 7 cents per share loss. The communications software maker
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