Implied Volatility Rank

Implied Volatility Rank, or IV Rank, measures the current implied volatility of an option relative to its high and low points over a specific timeframe, typically one year. It calculates where the current IV sits as a percentage between the lowest and highest IV observed during that period.

For example, an IV Rank of 50 percent means the current IV is exactly halfway between the year's low and high. This metric is useful for traders to determine if current option premiums are high or low in a range-bound context.

While IV Percentile tells you how often IV has been lower, IV Rank tells you where the current IV is relative to the absolute extremes. It is a quick way to assess the current volatility environment without needing the full historical distribution.

Traders often use IV Rank to filter for trading opportunities where options are priced at extremes. It is particularly popular in strategy selection for selling premium when IV Rank is high.

This metric simplifies complex volatility data into a single, actionable percentage. It is a key tool for managing expectations in directional and non-directional options strategies.