Analysis Tools
A complete, transparent suite for studying portfolios — from a first backtest to a constrained optimization. Every tool runs on real market data, shows its formulas, and explains each metric in plain English. All are free to use.
Which tool should I use?
Portfolio Analysis
Backtest Portfolio
Test one or more portfolios of ETFs or stocks against decades of real market data, with the full suite of return and risk metrics.
Asset Class Backtest
Allocate across US and international stocks, bonds, gold, REITs, commodities, and more — each represented by a widely held ETF.
Simulation
Monte Carlo Simulation
Estimate the range of outcomes your portfolio might experience using thousands of randomized return paths, with a probability of success.
Financial Goals Planner
Estimate your probability of reaching a target by a date — plus the contribution and return it would take.
Retirement Withdrawal Lab
Estimate the chance your nest egg lasts through retirement, compare spending strategies, find your safe withdrawal rate, and see sequence-of-returns risk in action.
Optimization
Efficient Frontier
Plot the curve of optimal portfolios and locate the minimum-volatility and maximum-Sharpe mixes.
Portfolio Optimization
Solve for the minimum-volatility, maximum-Sharpe, risk-parity, or target return/risk portfolio — then see where the risk really sits.
Black-Litterman Optimizer
A smarter optimizer: start from the market's implied returns and gently tilt toward your own views with a confidence level — avoiding the extreme portfolios plain optimization produces.
Asset Analytics
Asset Correlations
Build a correlation matrix, a diversification score, and spot redundant or diversifying holdings.
Rolling Correlations
Correlations aren't constant — track how each pair's relationship has evolved, plus the basket's average correlation.