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Volatility

Glossaire du trading

Definition

Volatility is a measure of the degree of variation in an asset's price over a given period. High volatility means prices are changing rapidly and unpredictably, while low volatility indicates relatively stable price movement. Volatility is a critical concept in trading, as it directly influences risk levels, position sizing, and strategy selection.

Exemple

During a major geopolitical event or central bank announcement, volatility in forex and equity markets can spike dramatically, creating both opportunities and risks for traders. A prop trader aware of an upcoming economic release might reduce their position size ahead of the event to avoid being caught by a sudden large price move that could breach their drawdown limits. On the other hand, traders who specialise in volatility-driven strategies may actively seek out high-volatility conditions to capture larger price swings within well-defined risk parameters.

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