What If I Had Invested? Historical ETF Backtester
Pick an ETF, choose a start year, and see how consistent investing would have grown your money through bull markets, crashes, and recoveries.
Hindsight is 20/20, but it is also a powerful teacher. This backtester simulates what would have happened if you had invested a fixed amount every month into a popular ETF starting in any year from 2005 to 2024. You will see your portfolio grow through the 2008 financial crisis, the long bull market of the 2010s, the COVID crash, and the 2022 bear market — complete with the emotional highs and lows along the way.
The goal is not to predict the future but to build conviction: investors who stay the course through downturns have historically been rewarded. Adjust the monthly amount, try different ETFs, and compare starting in 2007 (right before a crash) versus 2009 (right after one) to see how time in the market matters more than timing the market.
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Frequently Asked Questions
How accurate is this historical backtester?
The backtester uses simulated annual returns based on well-known index performance data from 2005 to 2024. While the broad market trends (such as the 2008 financial crisis, the 2020 COVID crash, and the 2022 bear market) are reflected accurately, actual ETF returns differ slightly due to expense ratios, tracking error, dividend reinvestment timing, and fund inception dates. Treat the results as a close approximation for educational purposes, not as exact historical performance.
What is dollar-cost averaging and how does this tool model it?
Dollar-cost averaging (DCA) means investing a fixed dollar amount at regular intervals regardless of market price. This tool models DCA by adding your chosen monthly contribution each year and applying half the annual return to new contributions (since money is invested throughout the year, not all at once in January). This gives a realistic approximation of how a regular investor's portfolio would have grown.
Why does the tool show emotional events like the 2008 crash?
Market downturns are the number one reason investors sell at the worst time. By showing you how a crash would have felt in dollar terms — and how the portfolio recovered afterward — the emotional timeline helps build the conviction to stay invested through future volatility. History shows that every major crash so far has been followed by a recovery to new highs.
Should I use this tool to decide which ETF to buy?
Past performance does not guarantee future results. This tool is designed to illustrate the power of consistent investing and the impact of market volatility on a portfolio over time. It is not a recommendation to buy any specific ETF. Your investment choices should be based on your risk tolerance, time horizon, and overall financial plan. Consider consulting a licensed financial advisor.