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Gamma hedging : A First Attempt
Issued on June 02 2010 par Strategies-Options.com
Delta hedging provides a way to hedge for small spot variations.
I - Delta hedgng and its limitset
We saw that delta hedging hedge a portfolio only for small variations and for a small period.
That means that hedge is a partial hedge.
II - Option gamma
Gamma is the rate of change of an option delta to a spot variation.
It's often expressed as a derivative of delta with respect to the spot or the second derivative of an option price with respect to the spot.
A Taylor expansion of our option Value V which depends on S the spot leads to :

Hence,

In trading terms:
Option Price Variation = ∆ * (Spot Variation) + (0.5) * (Г) * (Spot Variation)²
Option Variation is a function of the option delta and the option gamma.
Next : Gamma Hedging
Previous : Delta Hedging Principles
Hedging : Principles
Delta Hedging Principles
Gamma Hedging Principles
Vega Hedging Principles
Hedging : A First Attempt
Delta Hedging : A First Attempt
Gamma Hedging : A First Attempt
Hedging
Delta Hedging
Related Pdf :
- Hedging Risk ?
- Delta Gamma Hedging
- Basic Sensitivity Hedge : Options Delta and Delta Gamma, Rho Hedging
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