 Shares of Tempur Sealy International Inc. TPX, -3.36 fell 4.8 to 23.02 before market open after the mattress maker reported second-quarter sales below Wall Streets expectations and lowered its full-year earnings guidance. The mattress maker reported sales of 1.211 billion, up from 1,169.1 billion in the same period last year, but below the FactSet consensus of 1.264 billion. 