CPI The Consumers Price Index (CPI) measures the rate of price changes for a "basket" of goods and services purchased by households.
The Consumers Price Index (CPI) measures the rate of price changes for a "basket" of goods and services purchased by households. It is a key indicator of inflation, showing how much the cost of living has changed over time.
What it means
The Consumers Price Index (CPI) measures the rate of price changes for a "basket" of goods and services purchased by households.
Why it matters in live markets
In real markets, conditions like liquidity, volatility, and event risk can change quickly. That can affect quoted prices, spreads, and how orders fill. Understanding this term helps you interpret what you see on the platform and avoid incorrect assumptions when the market is moving fast.
Key points
- Markets often react to the surprise versus expectations, not just the headline number.
- Volatility can rise around releases, affecting spreads and execution.
- Context matters: policy expectations and risk sentiment can shift the reaction.
Example: If CPI prints above expectations, markets may reprice rate cuts, lifting yields and often strengthening the currency.
Related glossary terms
Where you will see it
You will usually encounter this concept in platform quotes, order tickets, trade history, and market commentary. If you are comparing conditions across instruments, check product specifications and note that behaviour can differ by market and session.