What implied volatility does to an option

Volatility is not an abstraction to an option — it is most of its price. This section traces the mechanical links from implied volatility to premium, to theta, to vega, and then walks the Indian event calendar to show what those links do to a real NIFTY chain on the days that matter.

What is volatility & options? Implied volatility enters an option's price through the time-value component, so a change in implied volatility changes the premium of every option that still has time value, with the effect measured by vega. Theta and vega both scale with implied volatility, which is why a high-IV environment simultaneously offers more decay to a seller and more risk per point of movement.

IV and Option Premium

IV and option premium are linked through the option's time value: raising implied volatility widens the distribution of possible outcomes and therefore ra…

How IV drives an option's price Beginner →

IV and Theta

IV and theta are tied together because a higher implied volatility means more time value to decay away and a wider expected daily move, so an option's the…

How IV drives time decay Intermediate →

IV and Vega

IV and vega are connected because vega is the rupees of premium an option gains or loses for a one-percentage-point change in implied volatility, and its …

Sensitivity of premium to a 1-point IV change Intermediate →

IV Before Expiry

IV before expiry becomes an increasingly unstable quantity as the at-the-money premium collapses toward zero with the square root of remaining time, so th…

Behaviour of the IV quote as expiry nears Intermediate →

IV After Expiry

IV after expiry does not exist, because implied volatility is a property of a specific option contract rather than a continuous quantity attached to the u…

What happens to the IV series at rollover Beginner →

IV Around Events

Event IV

IV around events is the predictable arc an option's implied volatility traces as a scheduled announcement approaches: it rises convexly while the uncertai…

The IV life cycle around any scheduled event Intermediate →

IV Around RBI Policy

RBI IV

IV around RBI policy is the modest, staged implied-volatility arc surrounding a Monetary Policy Committee decision — mild because the rate move is usually…

IV behaviour around an MPC decision Intermediate →

IV Around the Union Budget

Budget IV

IV around the Union Budget is the long, roughly month-long implied-volatility build-up and deep post-speech crush surrounding the government's annual fisc…

IV behaviour around the Union Budget Intermediate →

IV Around Election Results

Election IV

IV around election results is the largest scheduled volatility event in the Indian market, building toward roughly 28.5% implied volatility on the eve of …

IV behaviour around a general-election count Advanced →

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Frequently asked questions

What is volatility & options?

Implied volatility enters an option's price through the time-value component, so a change in implied volatility changes the premium of every option that still has time value, with the effect measured by vega. Theta and vega both scale with implied volatility, which is why a high-IV environment simultaneously offers more decay to a seller and more risk per point of movement.

How many volatility & options pages does VolatilityGyan have?

VolatilityGyan documents 9 concepts under Volatility & Options, each with a plain-English definition, a professional explanation, the formula with every variable defined, an original diagram, worked NIFTY examples, its limitations, common mistakes and at least twenty frequently asked questions.

Where should I start with volatility & options?

Start with IV and Option Premium. IV and option premium are linked through the option's time value: raising implied volatility widens the distribution of possible outcomes and therefore raises the premium, but the shape of that relationship — near-linear at the money, gentle in the money, convex out of the money — depends entirely on which strike you hold.