Portfolio backtesting, minus the paywall

Know how your portfolio would have performed.

Build portfolios, test them against decades of real market data, and compare strategies side by side — CAGR, drawdowns, Sharpe ratio and more, in seconds.

Start backtesting See what it does

of historical market data: 40+yrs
free to use, no fees: $0forever
no account required: 0sign-ups

The toolkit

Free investment analysis tools

Portfolio Backtest

Test investment strategies with 40+ years of historical data

Launch tool

Retirement Visualizer

Simulate 401(k), IRA, and HSA contributions and see your tax advantage

Launch tool

What's inside

Everything you need for honest analysis

Professional-grade portfolio analysis tools that help you make data-driven investment decisions

Historical Analysis

Test your portfolios against 40+ years of market data to see how they would have performed.

Portfolio Comparison

Compare multiple investment strategies side-by-side to find the optimal allocation.

Clear Charts

Interactive visualizations that make complex data easy to understand and actionable.

Instant Results

Get comprehensive analysis results in seconds, not minutes. No waiting around.

Performance Metrics

CAGR, Sharpe ratio, max drawdown, and more - all calculated automatically.

Flexible Timeframes

Analyze any time period from 1 year to 40+ years with intuitive date selection.

Why choose us?

Built for investors who want powerful analysis without the complexity

100% Free

No hidden fees, no subscriptions, no limits. Backtest as much as you want.

Mobile Friendly

Works perfectly on any device - desktop, tablet, or smartphone.

No Registration

Start backtesting immediately. No sign-ups or personal information required.

How it works

Build Your Portfolio

Add stocks, ETFs, or use our preset portfolios to get started quickly

Choose Time Period

Select from preset periods or pick custom dates for your analysis

Analyze Results

Get detailed charts, CAGR calculations, and performance insights