Portfolio Backtester & X-Ray
Pick any stocks or ETFs, set weights, pick a time horizon (preset or custom years), and backtest against the S&P 500 - dividends, rebalancing and recurring cashflows included. Every run also x-rays the same portfolio: your true sector mix inside the funds, the hidden overlap, the blended fee, and whether your holdings actually diversify each other.
Portfolio builder
ON
Allocation
Growth of $10,000
PortfolioS&P 500
Drawdown
PortfolioS&P 500
Risk & performance
Annual returns
PortfolioS&P 500
Rolling 3-year return
PortfolioS&P 500
Worst drawdowns
Efficient frontier & optimizer
Run a backtest with 2+ holdings first, then click Build frontier: 6,000 random weight combinations of your assets are tested over the same window. Every gray dot is one portfolio - hover any dot or marker to see its exact mix, CAGR and volatility. Suggested allocations (max Sharpe, minimum volatility, risk parity, equal weight) appear below - one click applies them to the builder.