By Rex Crum, MarketWatch
SAN FRANCISCO (MarketWatch) -- One quarter does not a year make , but in the case of GoPro Inc. it may be enough to allay concerns that the digital-sports camera maker's products are just a fad.
Shares of Caterpillar (CAT) ran up 5.7% in premarket trade Thursday, after the construction and mining equipment maker reported profit and sales that were well above expectations, and raised its earnings outlook for the year.
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