Home-Price Gains Continue to Slow in September

Interest rates have risen and inventory in some markets has been growing

Home-price gains slowed in September for the sixth consecutive month, another sign that rising mortgage rates are helping sap the momentum out of the housing market.

The S&P CoreLogic Case-Shiller National Home Price Index, which measures average home prices in major metropolitan areas across the nation, rose 5.5% in the year ending in September, down from the 5.7% year-over-year increase reported in August.

Price...