Daniel Graf had led Google Maps since 2012, leading the charge to bring the product to iOS.
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Entertainer and entrepreneur will.i.am unveiled "The Puls" smartwatch in hopes of blending fashion and technology.
Earlier Monday, IBM posted quarterly results that badly missed Wall Street expectations, which was enough to drag the entire Dow lower.
IBM posted earnings that fell short of analysts' expectations, after seeing a "marked slowdown" in September.