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Delta - measures the change in an option's price with respect to the change in the underlying asset

Delta is an estimate for how much the price of an option will change when the price of the underlying asset changes by $1.


Theta - measures the time decay of an option; the rate of change to the value of an option over time

Theta is useful for determining how much an option will lose each day over a set perdiod of time.


Gamma - measures the change in delta with respect to the change in the underlying asset

Gamma is an estimate for how much delta will change when the price of the underlying asset changes by $1; it is an indicator of how stable the delta is.


Vega - measures the change in the value of an option with respect to a change in volatility.

Vega is an estimate for how much the price of an option will change when volatility changes by 1%.


Rho - measures the change in the value of an option with respect to a change in interest rates.

Rho is an estimate for how much the price of an option will change when interest rates change by 1%.
Derivatives