Implied volatility

Plain-language meaning

Implied volatility is the volatility input that makes an option-pricing model match a stated option price.

Why it is useful

Implied volatility is useful as descriptive evidence when it is compared on the same definition, source, period, unit and exact listing. It is one input to research, not a verdict.

Where it appears in XMarketRadar

Look for Implied volatility in Futures, Option Chain, Options Screener and derivative study tables for a selected underlying and contract.

How it is calculated or sourced

Solve the selected option-pricing model for the volatility input that reproduces the observed option price using spot, strike, time, rates and other required inputs.

Inputs, period and unit

Read the disclosed inputs or source, observation period, bar interval, unit, native currency and scale. A value without its source and as-of context is incomplete; unlike units must not be combined.

Worked example

Illustrative only: If an option trades at ₹12, the model may require 24% annualized volatility to reproduce ₹12 with the stated spot, strike, time and rate; changing those inputs changes IV.

What high and low mean

A higher or lower Implied volatility value is descriptive, not automatically good or bad. Meaning depends on the instrument, comparison period, method and related evidence.

Positive, negative and genuine zero

Positive and negative Implied volatility values retain the definition shown here. A genuine reported or computed zero is displayed as 0 and is not the same as missing evidence.

When it is unavailable

Unavailable (—) means Implied volatility is absent, unsupported, stale under the screen's rules or not computable from verified inputs. It must never be converted to zero or a neutral signal.

Limitations and common mistakes

Greeks and IV are model estimates, not guaranteed realized changes. XMarketRadar's Black-Scholes-Merton calculation assumes a fixed 7% risk-free rate and has no dividend-yield input; exercise style, carry, stale quotes or a different rate can materially change the result.

Market-specific differences

Contract size, exercise style, expiry, settlement, price unit and trading rules vary across all supported markets. Always use the selected contract specification.

Related terms

Use the related-term links on this page to compare Implied volatility with neighbouring definitions while retaining each term's distinct source, unit and limitations.

Suggested next steps

Open the related Derivatives terms below, then follow the matching Help Centre task guide and inspect Implied volatility on an exact exchange listing. Confirm source, as-of time, units and unavailable reason before using it in research.

Educational information only; not investment advice or an order service.

This Implied volatility tutorial is educational and descriptive. It is not investment advice, a price prediction, a recommendation, or an instruction to buy, sell, rebalance or place an order.