Free, open-source tools to analyze your investments. Backtest portfolios, compare strategies, and make data-driven decisions.
Historical Data
Results
No Limits
Powerful investment analysis tools, free and open source
Professional-grade portfolio analysis tools that help you make data-driven investment decisions
Test your portfolios against 40+ years of market data to see how they would have performed.
Compare multiple investment strategies side-by-side to find the optimal allocation.
Interactive visualizations that make complex data easy to understand and actionable.
Get comprehensive analysis results in seconds, not minutes. No waiting around.
CAGR, Sharpe ratio, max drawdown, and more - all calculated automatically.
Analyze any time period from 1 year to 40+ years with intuitive date selection.
Built for investors who want powerful analysis without the complexity
No hidden fees, no subscriptions, no limits. Backtest as much as you want.
Works perfectly on any device - desktop, tablet, or smartphone.
Start backtesting immediately. No sign-ups or personal information required.
Add stocks, ETFs, or use our preset portfolios to get started quickly
Select from preset periods or pick custom dates for your analysis
Get detailed charts, CAGR calculations, and performance insights