Horton, Inc. (DHI), Lennar Corporation (LEN), PulteGroup, Inc. (PHM) and Toll Brothers Inc (TOL). In addition to PHM, TOL and LEN stock, the ETF counts Owens Corning (OC) and USG Corporation (USG) among its largest holdings. By David Becker, InvestorPlace Contributor Declining interest rates, falling gasoline prices, solid job growth and the recent announcement by the FHA that it would lower mortgage insurance premiums have been the catalysts behind the breakout in housing-related stocks.