AbstractMonte Carlo simulation is an efficient method to estimate quantile. However, it becomes a serious problem when a huge sample size is required but the memory is insufficient. In this paper, we apply the stream quantile algorithm to Monte Carlo simulation in order to estimate quantile with limited memory. A rigorous theoretical analysis on the properties of theϵn-approximate quantile is proposed in this paper. We prove that ifϵn=o(n-1/2), then theϵn-approximateα-quantile computed by any deterministic stream quantile algorithm is a consistent and asymptotically normal estimator of the true quantileqα. We suggest settingϵn= 1/(n1/2log10n) in practice. Two deterministic stream quantile algorithms, including of GK algorithm and ZW algorithm, are employed to illustrate the performance of theϵn-approximate quantile. The numerical example shows that the deterministic stream quantile algorithm can provide desired estimator of the true quantile with less memory.