Home prices posted their strongest year-over-year gain in almost seven years in January, according to the Case-Shiller 10- and 20-city Home Price Indices released Tuesday. Home prices rose year-over-year in all 20 cities in the survey.

Month-over-month, the 10-city index improved 0.2 percent in January, while the 20-city index was up 0.1 percent. Year-over-year, the 10-city index was up 7.3 percent, and the 20-city index rose 8.1 percent.