What Is the US CPI? Consumer Price Index Explained and Its Impact on Markets
What Is the US CPI?
The Consumer Price Index (CPI) measures the average change in prices paid by US urban consumers for goods and services. Published monthly by the Bureau of Labor Statistics (BLS), it is the most widely followed indicator of inflation. It is typically interpreted as a year-over-year (YoY) percentage change.
Why Does It Matter?
CPI directly influences the Federal Reserve's interest rate decisions. A higher-than-expected CPI increases the likelihood of rate hikes, which can push stock prices down and bond yields up. Conversely, a lower CPI fuels expectations for rate cuts, which is generally positive for markets.
Core CPI—which excludes volatile food and energy prices—is especially important to the Fed because it filters out temporary fluctuations. CPI release days are among the most volatile trading sessions each month, making it essential for investors to track.
How to Check It
You can view the latest US CPI data and trends in real time on the finica.io dashboard. Compare with historical data to track the inflation trajectory.
Check Live Data →Key Points
- CPI measures the rate of change in consumer prices—a core inflation indicator.
- It is one of the most influential data points for Fed rate decisions.
- Core CPI (excluding food and energy) carries more weight in policy decisions.
- Monthly release days can cause significant moves in stocks, bonds, and currency markets.