What is Volatility?

How much and how fast price moves — the raw material of both opportunity and risk, and it changes with session and news.

Volatility measures how much and how quickly price moves over a given period. A pair that swings 120 pips a day is more volatile than one that drifts 40. Volatility is neither good nor bad in itself: it is the raw material of trading. Without movement there is no profit to capture, but the same movement that pays targets also hits stops. Instruments differ enormously — gold and GBP/JPY routinely move several times more than EUR/CHF — and the same instrument changes character between sessions.

Practical trading adjusts to volatility rather than ignoring it. Stops and targets sized for a quiet market get destroyed in a fast one, so position sizes should shrink when ranges expand — a wider stop with a smaller lot keeps the money at risk constant. Volatility clusters around news releases, session opens and thin holiday liquidity. Tools like ATR (average true range) give an objective read, but simply knowing the instrument's normal daily range already puts a trader ahead of most.