No competent system developer uses mc to "predict stock prices." None. Monte Carlo is a process for estimating variation in randomized simulations of a system's

No competent system developer uses mc to "predict stock prices." None. Monte Carlo is a process for estimating variation in randomized simulations of a system's parameters. It is just one statistical tool for examining simulated trade distributions. On unsampled data it is useful for assessing distributions of performance characteristics. I don't know of one person using mc to try to predict prices however.