Delta Δ
Sensitivity of option price to a ₹1 move in the underlying.
Quick Answer
Delta measures how much an option's price is expected to change when the underlying moves by ₹1 — and doubles as a rough probability of the option finishing in-the-money.
Delta is one of the option Greeks — sensitivity of option price to a ₹1 move in the underlying. OptionsGyan teaches the options fundamentals; the complete reference for Delta — the plain-English meaning, formula, original diagram, a worked Nifty example, common mistakes and FAQ — lives on GreeksGyan, our dedicated option-Greeks site.
Read the full Delta guide on GreeksGyan
Delta (Δ) — 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.