Control Variate Technique

Control

The control variate technique represents a variance reduction method employed in quantitative finance, particularly valuable when estimating option prices or other derivative values where direct Monte Carlo simulation proves computationally expensive. It leverages the correlation between an estimator and a known, analytically solvable quantity—the control variate—to improve the efficiency of the simulation. This approach aims to minimize the mean squared error of the estimator, thereby reducing the number of simulations required to achieve a desired level of accuracy.