Crank-Nicolson Method

Algorithm

The Crank-Nicolson method represents a finite difference scheme widely employed for solving partial differential equations, particularly those arising in the numerical solution of the Black-Scholes equation within options pricing and related financial derivative models. It distinguishes itself through its implicit nature, requiring the solution of a system of linear equations at each time step, a characteristic that promotes stability, especially when dealing with stiff differential equations common in financial modeling. This approach contrasts with explicit methods, which can exhibit conditional stability constraints on the time step size. Consequently, Crank-Nicolson finds application in scenarios demanding high accuracy and stability, such as pricing American options or modeling complex stochastic volatility processes within cryptocurrency derivatives.