Tool
Portfolio Simulator
A Monte Carlo simulator that runs 2,000 random market paths through your portfolio and shows the range of where you could land, not a single fake number. Pick the version that matches how you invest. Start simple and add complexity only if you want it. Everything runs in your browser.
Which version should I use?
Five versions, simplest first. Higher ones add detail, not accuracy; only go further if you actually hold those slices.
- Core Four: US, developed, emerging, bonds. The whole market in four holdings; where most people should start.
- Core + Alternatives: the four core blocks plus real estate, gold, and Bitcoin.
- Size Tilt: splits each equity region into large-cap and small-cap.
- Style Tilt: splits each equity region into growth and value.
- Build Your Own: define any assets, with your own expected returns, volatilities, and correlations.
Want to check what you already hold instead of a hypothetical mix? Use the Portfolio Analyzer.
1
The Core Four US, developed, emerging, and bonds — the whole market in four holdings.
Open → 2 Core + Alternatives Add real estate, gold, and Bitcoin to the four-asset core.
Open → 3 The Size Tilt Split every region into large-cap and small-cap.
Open → 4 The Style Tilt Split every region into growth and value.
Open → + Build Your Own Define your own assets, expected returns, volatilities, and correlation.
Open → Each version explains what every asset means, the exact historical data used, and how the simulation works. Illustrative, not advice. See the disclaimer.