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LEARN · DERIVATIVES

Implied volatility (IV)

Implied volatility is the volatility input that, in an options pricing model, matches the observed option premium. It is a market-implied number, not a forecast of the stock.

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Why it matters

IV is widely used to compare option richness across strikes and expiries. Without a real chain and model assumptions, a printed IV is fiction.

How RomeWay uses it

OPT shows — for IV on Hosted. We will not fill a decorative percentage.

FAQ

Is high IV bullish?: No. High IV means options are pricing larger expected moves — direction is a separate question.