FILE PHOTO: A house built by the D.R. Horton company is seen for sale in Arvada, Colorado January 24, 2017. REUTERS/Rick Wilking (Reuters) - D.R. Horton Inc (DHI.N), the No.1 U.S. homebuilder, slashed its 2017 cash flow forecast from operations by half, citing delays because of the recent hurricanes. The company’s shares were down 3.7 percent at $35.52 in light premarket trading on Monday.