"What IV is considered high" has no fixed answer — and that's the actual answer. 40% implied volatility is cheap on TSLA and expensive on KO. The only comparison that means anything is IV rank: where today's implied volatility sits inside that same ticker's own 52-week range, scored 0 to 100. Above 60 is rich, below 30 is cheap. Pick a ticker below and we'll read it off the live chain.
ATM IV off the live options chain, IV rank against its own 52 weeks, and the expected move into the nearest expiry.
Any US-listed optionable ticker works — the URL pattern is /iv/{ticker}, e.g. /iv/nvda.
Every options screener shows you implied volatility. Almost none of them tell you whether the figure is high, and that's the only thing you actually need to know before buying or selling premium. A 55% IV reading is unremarkable on a name that lives between 40% and 90%, and a screaming sell on one that spends the year between 20% and 30%.
That's what IV rank is for. It reframes the question from "is this number big" to "is this expensive for this ticker" — the only version of the question with a usable answer.
The other half most IV tools miss is dealer positioning. Implied volatility tells you what you're being charged; dealer gamma tells you whether hedging flow is currently suppressing or amplifying the movement you're paying for. Cheap IV in a heavily positive-gamma tape is often cheap for a mechanical reason rather than an opportunity. Free gamma map →
There's no single number, which is why the question can't be answered with one. 40% implied volatility is cheap on a high-beta name and expensive on a consumer staple. The measure that works across tickers is IV rank: it scores today's IV from 0 to 100 against that same ticker's own past 52 weeks. Above 60 is generally treated as rich, below 30 as cheap. Look up any ticker below.
Implied volatility is the annualised move an option's price implies, backed out of the market price rather than measured from history. It's a price, not a prediction: high IV means options are expensive, low IV means they're cheap. It carries no directional information at all.
It's solved for rather than computed. Take the option's market price and reverse-engineer the volatility input a pricing model would need to produce that price. There's no closed-form solution, so it's found by numerical iteration. ATM IV uses the at-the-money contract in the nearest expiry — the most liquid strike and the one least distorted by skew.
IV rank compares today's IV to the highest and lowest IV of the past year — a position within that range. IV percentile counts the proportion of days in the past year when IV was lower than today. Rank is more sensitive to a single extreme spike; percentile is more stable. Both answer "is this high for this ticker", which raw IV cannot.
No. It means the market is charging as though it will. High IV often reflects an event premium that collapses once the event passes — which is how a correct directional call into earnings still loses money. Compare implied against realised movement.
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ATM IV and expected move estimated from the live options chain (Polygon); IV rank from Unusual Whales. Implied volatility moves intraday · educational, not financial advice · options carry substantial risk of loss.
