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This Is the 1 Investing Move That History Says Has Never Once Failed Long-Term Investors

Dollar-cost averaging into the S&P 500 has delivered powerful gains for 98 years, through good times and bad, bubbles and busts.

This Is the 1 Investing Move That History Says Has Never Once Failed Long-Term Investors

Published August 14, 2026 · Category: Finance

Overview

In the past few years, the U.S. stock market has been booming, despite some tumultuous ups and downs. We had the pandemic stock market crash and then a powerful rally in 2020-2021. The S&P 500 (SNPINDEX: ^GSPC) went down by about 18% in 2022 as interest rates rose. And as of this writing, during the week of Aug. 4, the artificial intelligence (AI) boom helped drive the S&P 500 to all-time highs.

But many investors are nervous. The Iran conflict, higher energy costs, and inflation might not go away. Interest rates might go higher. The good times might come to an end. The AI stock boom might turn to a bust.

Details

How should people invest if they worry that today's stock market is overvalued and share prices are too good to last? No one knows for sure what the future holds with investing. But most people with a long-term time horizon should make one simple investing move right now: Use dollar-cost averaging to keep buying a diversified portfolio of stocks, such as the State Street SPDR Portfolio S&P 500 ETF (NYSEMKT: SPYM).

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Source

Originally published at www.fool.com.

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Disclaimer: This article is for informational purposes only and does not constitute investment advice. Data may be delayed up to 15 minutes. Past performance is not indicative of future results. Consult a licensed financial advisor before making investment decisions.