Check out the companies making the biggest moves midday: Apple — The iPhone maker gained more than 5% after a White House official confirmed the company would invest another $100 billion in the U.S. That would bring Apple's total U.S. investment over the next four years to $600 billion . Grocery Outlet — The discount grocery store rallied 38% after the company reported second-quarter earnings that beat the Street. Grocery Outlet earned 23 cents per share, excluding items, beating a FactSet consensus of 17 cents per share. Full-year earnings guidance also topped estimates. Bloomin' Brands — The restaurant chain plunged 28.4% after providing weak guidance for the current quarter and full year. That overshadowed a better-than-expected earnings report for the second quarter. Viasat — The commu

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