Does a short options position have the same vega exposure as a long one?

No. Short option positions carry the opposite exposure. Rising implied volatility works against a short position and in favor of a long one. Select your position direction to get the correct sign.

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How much will my options position's value change if implied volatility moves 1 point?

Q: How much will my options position's value change if implied volatility moves 1 point?

Enter your vega per contract, number of contracts, position direction, and an expected IV move. This tool multiplies vega by 100 shares per contract, by contract count, and by the IV move to estimate the dollar change.

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Enter Your Position

Your Result

Fill in your position details and click Calculate to see the estimated dollar impact of an IV move.

How this is calculated

Vega estimates the dollar change in an option's price for a 1 percentage-point (1 IV point) change in implied volatility, holding the stock price, time to expiration, and the other Greeks constant.
One standard equity option contract represents 100 shares unless otherwise specified, so per-contract dollar vega equals vega-per-share multiplied by 100.
Vega itself is a modeled estimate, not a fixed number. It changes as the stock price moves, time passes, and implied volatility itself changes.
Short option positions carry the opposite vega exposure of long positions: rising implied volatility helps a long option and hurts a short one.

Risk & liability disclaimer: This calculator applies simple multiplication to the vega, contract count, and IV move you enter. Vega is a modeled estimate from your options platform, not a guaranteed price change, and actual option prices depend on multiple factors changing at once. Trading Habits is not a broker-dealer, registered investment adviser, or tax professional, and is not affiliated with any broker, exchange, or data provider. We do not guarantee this tool is error-free or suitable for your situation. Always verify results independently and consult a licensed professional before making any trading or financial decision. You could lose some or all of the capital you trade with.

How much will my options position's value change if implied volatility moves 1 point?

Enter Your Position

Your Result

How this is calculated

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