Delta-Gamma Approximation

Calculation

The Delta-Gamma approximation is a second-order Taylor series expansion used to estimate the change in a derivative’s price in response to small movements in the underlying asset’s price. This calculation incorporates both Delta, the first derivative representing linear sensitivity, and Gamma, the second derivative representing the rate of change of Delta. It provides a more accurate estimate of portfolio value fluctuations compared to a simple Delta approximation, especially for options portfolios where non-linear price changes are significant.