Getty ImagesFacebook Inc. FB could face its first European Union antitrust probe soon, according to a Reuters report Wednesday. The social-networking giant was not immediately available for comment. European Competition Commissioner Margrethe Vestager reportedly is looking at the market sway of Facebook’s online marketplace, which is used by 800 million users in 70 countries to buy and sell items. If Facebook is targeted by the EU, it would join Inc. AMZN, Apple Inc. AAPL, and Google parent Alphabet Inc. GOOGLGOOG — all of whom are under some form of investigation in Europe.

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