Investors have taken comfort from the recent improvement in housing prices seen across the country. Shares of homebuilders, including Toll Brothers (NYSE: TOL ), Lennar Corporation (NYSE: LEN ) and the SPDR S&P Homebuilders ETF (NYSE: XBH ), had been bid up late in 2012 and into January. But now the shares are rolling over. Could the relative underperformance of the homebuilders be telling us something? David Stockman, former director of the Office of Management and Budget under President Ronald Reagan, thinks so. In an interview with The Daily Ticker , Stockman said, "I would say we have a housing bubble again. I don't think we have a real, organic, sustainable recovery." Stockman argues that "fast money" is moving into the local real estate markets that suffered the biggest declines in order to "speculate in buy-to-rent for a quick trade." Stockman thinks that these speculators will be looking to sell out as soon as prices rise sufficiently to give them a specific rate of return and that "they will be gone as quickly as they came." To continue reading, please click here...