Vega ν
Sensitivity of option price to a 1% change in implied volatility.
Quick Answer
Vega measures how much an option's price changes when implied volatility moves by one percentage point — it is your exposure to the market's expectation of future movement, not to the movement itself.
Vega is one of the option Greeks — sensitivity of option price to a 1% change in implied volatility. OptionsGyan teaches the options fundamentals; the complete reference for Vega — the plain-English meaning, formula, original diagram, a worked Nifty example, common mistakes and FAQ — lives on GreeksGyan, our dedicated option-Greeks site.
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Vega (ν) — the full guide
Meaning, formula, diagram, Nifty worked example, misconceptions and FAQ.
All the option Greeks
Delta, Gamma, Theta, Vega, Rho and the second-order Greeks, in one reference.
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Published 1 July 2026. Educational content only — not investment advice.