Options Greeks Calculator
Options Greeks Estimator
Estimate the change in option premium based on Greeks.
Market Changes
Estimated Premium Change
+₹10.50
Approximation based on Taylor Series expansion of Greeks.
What to do next
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Black-Scholes Options Greeks Formulas
Calculates derivative risk parameters measuring option price sensitivities to stock price, volatility, and time decay.
Worked Example: Option with Delta 0.65 and Theta -2.50
Options Greeks: Managing risk through option price sensitivities
Vikram bought call options with a Delta of 0.65. When the underlying stock rose by ₹10, his option price rose by ₹6.50, allowing him to capture leveraged gains.
He also monitored his Theta at -2.50, meaning his option lost ₹2.50 in premium value every single day due to time decay.
Options Greeks measure option price sensitivities to stock price (Delta, Gamma), time decay (Theta), and volatility (Vega).
Understand Greeks to select the right option contract. Choose high Delta options to capture stock moves and avoid high Theta contracts near expiry.
Frequently Asked Questions
What does Option Delta measure?
Delta measures how much the option's price will change for a ₹1 change in the underlying stock price. A 0.50 Delta call option will increase by ₹0.50 if the stock rises by ₹1.
What is Option Theta (Time Decay)?
Theta measures the rate at which an option's value declines as it approaches its expiration date. Options lose value every day, hurting option buyers but benefiting option sellers.
What is Implied Volatility (Vega)?
Vega measures an option's sensitivity to changes in the volatility of the underlying asset. When market panic sets in, IV rises, causing option premiums to spike even if the stock price hasn't moved.
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