Key TakeawaysD.R. Horton shares tumbled 12% Tuesday morning to lead S&P 500 decliners as the homebuilder's fourth-quarter results and 2025 outlook fell short of analysts' expectations.Quarterly revenue and profit both fell from last year, as the company said lower mortgage rates weren't driving sales as much as expected.The company's revenue projections for fiscal 2025 also came in well below estimates. Shares of homebuilder D.R. Horton (DHI) sank 12% Tuesday morning to lead S&P 500 decliners after the comp ...