Retirement Planning Insights

Expert analysis on historical simulation, withdrawal strategies, and financial independence planning

How to Use Shiller Data (ie_data.csv) for Retirement Backtesting

How to Use Shiller Data (ie_data.csv) for Retirement Backtesting

Looking to use the renowned Robert Shiller data for your retirement planning simulations? While Bellavia comes with built-in US and UK market data from 1900-2020, …

6 min
Historical Backtesting vs Monte Carlo in Retirement Planning

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 …

5 min
The Ultimate Guide to Historical Market Data for Financial Planning

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. …

4 min
Welcome to Bellavia App

Welcome to Bellavia App

For more than a century, markets have recorded every boom, crash, recovery, and quiet time in between. Within this record lies the most reliable guide …

2 min