RESOURCES / PORTFOLIO COMPARISON FAQ
Questions before you compare portfolios.
Start with the same question, make one controlled change, and read the complete historical trade-off.
Questions readers ask.
What is a portfolio comparison tool?
A portfolio comparison tool lets you backtest and compare portfolios side by side. PortfolioBacktest is designed for controlled comparison: one declared variable changes while the rules, period, and data treatment stay visible. That makes the result easier to interpret than a leaderboard of unrelated portfolios. You can start with a complete reference portfolio, test an allocation or rebalancing change, and then inspect the ending value, drawdown, volatility, recovery, and relative path before deciding what the historical trade-off means.
Can I compare ETFs, stocks, bonds, and gold together?
Yes. The framework supports multi-asset portfolios built from compatible US-listed ETFs, stocks, bond funds, and gold exposure. Each variant uses the same initial capital, observation window, common dates, price treatment, and rebalancing rule. The result describes the specific instruments tested rather than an abstract asset-class promise. If an asset has limited history, the usable window or proxy is disclosed so a shorter record is not mistaken for a complete long-term answer.
Why compare one variable at a time?
Changing one meaningful variable keeps the measured difference explainable. You might move 10% from an equity ETF to gold, change annual rebalancing to quarterly, or alter the start date while every other rule remains fixed. If several choices change together, an apparent improvement cannot be attributed or reproduced confidently. One-variable branches are not proof of causation, but they are a disciplined way to learn which decision changed the historical path and what risk or return trade-off came with it.
Is the highest-return portfolio always better?
No. A higher ending value may come with a deeper maximum drawdown, greater volatility, slower recovery, or weaker consistency across start years. PortfolioBacktest treats the conclusion as a trade-off matched to the objective. Read the relative-performance curve and contribution breakdown alongside return, then test whether the apparent advantage survives a nearby period or market regime. The useful answer is not simply which portfolio won, but which configuration held up best under the criteria you actually care about.