Monte Carlo Portfolio Stress Tester

Stress-test your portfolio against 100 scenarios (1,000 with PRO). See percentile outcomes and drawdowns.

Monte Carlo Portfolio Stress Tester — See how your portfolio performs across hundreds of randomized market scenarios. FREE FEATURES: - 100 Monte Carlo simulations across a 30-year horizon - Percentile fan chart showing 10th/25th/50th/75th/90th outcomes - Drawdown analysis for every simulation trial - Distribution histogram of final portfolio values - 5 asset classes: US Stocks, International Stocks, Bonds, REITs, Cash - Target hit rate and portfolio preservation metrics - Persistent inputs saved between sessions PRO FEATURES ($4.99 one-time): - 1,000+ Monte Carlo simulations for higher accuracy - 21-allocation grid search optimizer - Sharpe ratio optimization - Side-by-side scenario comparison - CSV data export Uses the same statistical methods (NORMINV random generation) used by institutional risk managers. No external data — everything runs locally in your browser. Built by QuantCalc (quantcalc.app) — the Monte Carlo retirement planning platform used by FIRE planners and self-directed investors.