IV Rank Calculator
Check if options are cheap or expensive. See where current volatility falls relative to its 52-week range.
Enter a ticker symbol to see volatility data
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Frequently Asked Questions
What is IV Rank?
IV Rank measures where current implied volatility sits relative to its 52-week range. An IV Rank of 80% means current IV is near the top of its yearly range, suggesting options are relatively expensive.
What is the difference between IV Rank and IV Percentile?
IV Rank compares current IV to the high and low over a period. IV Percentile measures the percentage of days that IV was below the current level. A stock with IV Rank of 50% had IV exactly at the midpoint of its range.
When should you sell options based on IV Rank?
Many premium sellers look for IV Rank above 50% as a starting point, with above 80% considered elevated. High IV Rank means you collect more premium, and if IV reverts to the mean, the position benefits from the decline.
What is a good IV Rank for selling covered calls?
For covered calls, IV Rank above 30-50% is generally favorable. Higher IV means more premium collected, but also signals the market expects larger moves. Balance premium income against the risk of assignment.
How often does IV Rank change?
IV Rank changes continuously during market hours as options are repriced. It tends to spike before earnings and major events, then drop sharply afterward (IV crush). Checking IV Rank before entering a trade helps ensure you are selling at favorable levels.
Is this IV Rank calculator free?
Yes, the IV Rank calculator is completely free with no account required. For real-time IV monitoring and AI-powered trade recommendations across your watchlist, try Alpha Copilot.