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    Read an options implied volatility surface

    Implied volatility by strike and expiry for a ticker: skew, term structure and how current IV compares with realised volatility.

    Are this stock's options cheap or expensive?

    The volatility surface shows implied volatility across strikes (skew) and expiries (term structure). Comparing implied with realised volatility indicates whether options price more movement than the stock has delivered.

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    Volatility Surface screen in Market Ontology
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    What opens after checkout

    Dated skew/term-structure comparison with quote-quality flags, built from the details above and saved to your account in Options.

    You get
    Dated skew/term-structure comparison with quote-quality flags
    Opens in
    Options
    Built from
    Underlying, expiries, strikes/deltas, filters
    Orders
    None; nothing is sent on your behalf

    Method

    • — IV solved from option mid prices with Black-Scholes, excluding zero-volume contracts.
    • — Skew = 25-delta put IV − 25-delta call IV; term structure = ATM IV by expiry.
    • — Realised volatility = annualised standard deviation of daily log returns over 20 and 60 days.

    Limits

    Illiquid strikes produce noisy IV; contracts without volume are excluded rather than interpolated.

    Updated 2026-10-15

    Questions

    What does steep put skew mean?
    Downside protection is priced at a premium to upside calls — common in equities, more so before events.