IV percentile
Definition · Level 5 · Greeks & volatility
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Share of trading days in the past year on which implied vol was below today's level; less distorted by one spike than the range-based measure.
Example
IV was lower on 189 of 252 days → 75.
Rules and market figures change: check the current ones before relying on this.
Where Tradecraft teaches it
Level 5 · Greeks & volatility, in the lesson “Implied vs realized, IV rank & vol crush”: IV is the price of options: how to judge whether it is high, and what happens after the event.
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- IV rankWhere current implied vol sits in its 52-week range: (IV − 52w low) ÷ (52w high − 52w low) × 100.
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