About

Portfolio Backtester was built to answer a simple question: "What if I had invested differently?"

Most backtesting tools are either locked behind expensive paywalls or too complex for everyday investors. This tool is different — it gives you historical performance data for any portfolio allocation, with dollar-cost averaging simulation, S&P 500 benchmarking, and annual rebalancing built in.

Enter your tickers, set your allocation, pick a time period, and see exactly how your portfolio would have performed using real market data.

How it works

  • 01Choose up to 10 tickers and set your allocation percentages
  • 02Set a monthly investment amount and time period
  • 03The engine simulates monthly purchases using historical closing prices
  • 04Compare your portfolio against the S&P 500 and plain USD savings

Built and maintained as a solo project. Questions or feedback? Reach out at [email protected]