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Glossary
The market's expectation of future movement, baked into the option's price.
Implied Volatility (IV) is the market's forecast of how much a stock will move, expressed as an annualized percentage and derived from current options prices. High IV = expensive options. Low IV = cheap options.
IV usually spikes before earnings and binary events, then collapses immediately after — this is called "IV crush."
IV Rank compares current IV to the stock's 52-week IV range. An IV Rank of 80 means current IV is in the 80th percentile of its yearly range — historically expensive. High IV Rank is favorable for premium selling (CSPs, covered calls); low IV Rank favors buying options (LEAPS, directional calls).
Before buying options, check whether IV is elevated. Buying calls right before earnings when IV Rank is 90+ means you are overpaying — even a correct directional move can lose money if IV crushes faster than the underlying moves. The LEAPS Scanner targets strikes with favorable extrinsic efficiency partly because of this dynamic.