Worried About a Stock Market Crash? This Is the Single Best Investing Move You Can Make Right Now.

If you're nervous about the future of the market, you're not alone. Around 80% of Americans are at least slightly concerned about the possibility of a recession, according to a 2025 survey from financial association MDRT.

The bad news is that some stock market metrics suggest declines could be coming sooner rather than later. The S&P 500 Shiller CAPE Ratio, for example, implies that the index is overvalued -- with the metric reaching its highest point since the dot-com bubble burst of the early 2000s.

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To be clear, past performance doesn't predict future returns, so there's no way to know for certain whether a recession is coming in 2026. But the good news is that there's an important move you can make that is all but guaranteed to prevent losses if the market crashes.

Your portfolio will likely drop in value if stock prices take a turn for the worse this year. But staying invested for the long term is one of the most proven ways to build wealth despite short-term volatility.

Since 1929, the average S&P 500 (SNPINDEX: ^GSPC) bear market has lasted around 286 days, according to research from investing firm Bespoke. That's just under 9.5 months. Meanwhile, the average bull market has lasted over 1,000 days -- or nearly three years.

By staying patient and riding out the bear markets, , you're far more likely to make money in the market than you are to lose it. If you panic-sell your investments after prices have dropped, you risk selling your stocks for less than you paid for them and locking in steep losses.

No two bear markets or recessions are identical, but there's never been a downturn that the market hasn't recovered from -- with enough time.

The S&P 500 is up by nearly 45% since January 2022, which was the start of the most recent bear market. Since the dot-com bubble burst in 2000, it's up by nearly 400%.

Nothing is guaranteed in the stock market. That said, regardless of when the next recession begins, how long it lasts, or how severe it is, it's incredibly likely that the market will pull through with enough time.

If there's only one move you make to help protect your portfolio, it's staying invested even in the face of volatility. The longer you keep your money in the market, the better your chances of earning positive total returns.