What Is Implied Volatility Rank?
Implied Volatility Rank (IV Rank or IVR) expresses the current implied volatility as a percentile of its historical range over a specified period (typically 52 weeks). If IV Rank is 80%, current IV is higher than 80% of all readings over the past year. An IV Rank of 10% means current IV is near historical lows.
How Implied Volatility Rank Works
IV Rank normalizes volatility across different assets and time periods. An IV of 80% on BTC might be normal (low IV Rank) while an IV of 40% on a stablecoin pair would be extreme (high IV Rank). By comparing current IV to its own historical distribution rather than absolute levels, IV Rank tells you whether options are cheap or expensive in relative terms.
Why It Matters for Traders
IV Rank drives options strategy selection. When IV Rank is high (above 50%), options are relatively expensive — sell premium (sell puts, sell calls, sell strangles). When IV Rank is low (below 30%), options are relatively cheap — buy premium (buy calls/puts for directional bets, buy strangles for expected volatility expansion). This systematic approach to options trading based on IV Rank is one of the most consistent edge sources in derivatives markets.