• Gamma is the rate at which the delta of an option changes, based on a change in the price of the delta by one pip.

  • This is a second order risk factor, sometimes known as delta delta.
  • Gamma is at its highest when the option is in the money, and at its lowest when it is further out of the money.
  • The gamma is also higher for options with a closer expiration date than for options with a later date, all other things being equal.
  • Gamma is used when trying to estimate how changes in the underlying asset will affect the monetary value of an option.
  • Delta gamma hedging protects an option position from changes in the underlying asset.