CGMY = Carr-Geman-Madan-Yor Model

The CGMY model is a stochastic process used in financial mathematics for modeling asset price dynamics, particularly in option pricing. It extends Lévy processes to better capture jump behavior in financial markets, making it useful for pricing derivatives and understanding market movements.

Key Features:

- Accounts for jumps in asset prices, unlike standard Black-Scholes models.

- Uses four parameters (C, G, M, Y) to describe the intensity and distribution of jumps:
     - C = Overall jump activity.
     - G = Rate of downward jumps.
     - M = Rate of upward jumps.
     - Y = Controls the jump tail behavior (how heavy the tails of the distribution are).