In plain English
What Volatility means
A volatile market makes larger or faster price swings than a calm market. Traders often associate volatility with uncertainty, but it is not a direction; prices can move sharply upward or downward. Higher volatility usually makes execution less predictable.
Why it matters
Volatility can widen spreads, increase slippage, trigger stops, and reduce the reliability of quoted prices. It is central to evaluating whether an order can be filled near the intended price, especially around data releases or market shocks.
Example
If EUR/USD moves from 1.1000 to 1.1008 and back to 1.1002 within a short interval, the market is more volatile than one that stays between 1.1000 and 1.1001. This is a simplified illustration of short-term price movement.
Quick answers
Common questions
Is volatility always bad for traders?+
No. It can create opportunity as well as risk, but it makes execution outcomes less predictable.
How is volatility different from liquidity?+
Volatility describes price movement. Liquidity describes how easily an order can trade without moving the price much.
Sources