Opening Bell: Stocks Slip on Brexit Worries; Microsoft to Buy LinkedIn

U.S. stocks slipped on Monday as the possibility of a Brexit spooked investors. The Japanese yen rallied against the pound and the euro. Meanwhile, Microsoft (MSFT) - Get Report said it will acquire LinkedIn (LNKD) for $26.2 billion, or $196 a share, a 50 percent premium to LinkedIn's closing price on Friday. LinkedIn CEO Jeff Weiner will remain in his role and report to Microsoft CEO Satya Nadella. Plus, Apple (AAPL) - Get Report shares were in focus as the tech giant holds its Worldwide Developers Conference later on Monday, which includes remarks from CEO Tim Cook at 1pm Eastern. Apple is expected to expand Siri across more devices. TheStreet's Scott Gamm reports from Wall Street.