What is the Consumer Price Index (CPI)?

The Consumer Price Index (CPI) is a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services. Indexes are available for the U.S. and various geographic areas. Average price data for select utility, automotive fuel, and food items are also available.

Why do investors need a consumer price index?

Individual investors can also benefit from a close examination of consumer price trends. The consumer price index tracks the monthly prices of selected goods and services. The CPI is used by investors, government payroll offices, government services, banks, and consumers to assist in financial decision-making.

What happened to the Consumer Price Index in July?

The consumer price index for July rose 8.5% year-over-year, and was flat compared to June. The S&P 500 hit its highest level in three months on the news. The Dow gained 535 points, or 1.6%, on Wednesday. The S&P 500 jumped 2.1%. The Nasdaq Composite was up 2.9%. As stocks settle after the trading day, levels might still change slightly.