CPI stands for Consumer Price Index. It measures how prices paid by consumers change over time. The Bureau of Labor Statistics publishes CPI each month, and traders use it as a key inflation read.
CPI matters because inflation affects expectations for Federal Reserve policy. A hotter-than-expected CPI print can push rate expectations higher. A cooler print can support the idea that policy may become easier.
Headline vs core CPI
Headline CPI includes all categories. Core CPI excludes food and energy because those prices can be volatile. Traders usually watch both, plus month-over-month and year-over-year changes.
Why CPI can move perps
When CPI surprises, stocks, crypto, rates, and the dollar can all move at once. Leveraged positions may see fast mark-price changes, wider spreads, and liquidations if traders are positioned on the wrong side.
A simple CPI checklist
- Know the release time before entering a trade.
- Compare the print with expectations, not just the prior number.
- Watch rates and the dollar for confirmation.
- Use smaller size if the event can overpower the chart setup.
Official source: CPI release dates are published by the BLS at bls.gov.