The Case-Shiller Home Price Index is a widely recognized measure of residential real estate prices in the United States. It tracks changes in the value of single-family homes over time, providing insights into market trends. The index is based on repeat sales of homes, which helps to ensure accuracy by comparing the same properties across different time periods. Published monthly by S&P Dow Jones Indices, the index covers major metropolitan areas and the national average. It serves as a valuable tool for economists, investors, and policymakers to assess the health of the housing market and make informed decisions.