Historical 90% and Monte Carlo 90% Are Not the Same Number
Historical 90% and Monte Carlo 90% Are Not the Same Number Even when both say 90% success and displayed the same way, they do not …
Retirement Planning Insights
Expert analysis on historical simulation, withdrawal strategies, and financial independence planning
Monte Carlo vs Historical Simulation: Why They Disagree and Why That's Fine
You ran a retirement simulation and got two results. The historical backtest says 98.9% success. The Monte Carlo says 90.5%. Which one is right? Both. …
Historical Backtesting vs Monte Carlo in Retirement Planning
Historical data gives us the only empirical laboratory we have. It tells us how portfolios behaved through war, depression, inflation, stagnation, and exuberance. Without these …
The Ultimate Guide to Historical Market Data for Financial Planning
Looking to analyze your retirement portfolio with real historical data? While Bellavia.app includes US and UK market data from 1900-2020, you can do even better. …