The S&P CoreLogic Case-Shiller U.S. National Home Price NSA Index, covering all nine U.S. census divisions, reported a 6.4% annual gain for February, up from a 6.0% rise in the previous month. The data from the leading measure of U.S. home prices released April 30 shows that 18 out of the 20 major metro markets reported month-over-month price increases.