Variance Gamma

Model

This stochastic process belongs to the family of pure jump processes often employed to model asset returns with higher kurtosis and skewness than a standard normal distribution. By incorporating a gamma-distributed time change into a Brownian motion with drift, it effectively captures the leptokurtic nature of cryptocurrency price changes where frequent small fluctuations and occasional extreme jumps occur. Quantitative analysts utilize this framework to move beyond the constraints of constant volatility, providing a more robust fit for the empirical patterns observed in high-frequency trading data.