A Stock Market Alarm Is Sounding for the Third Time in 20 Years. History Says This Will Happen Next.

The S&P 500 (SNPINDEX: ^GSPC) briefly fell into correction territory in March. The index has since bounced back to a small degree but remains more than 8% below the record high it reached in February. However, an economic warning bell seen during just two periods in the last 20 years may signal more trouble on the horizon.

As of March 18, data from the Federal Reserve Bank of Atlanta shows that U.S. gross domestic product is on pace to decline an annualized 1.8% in the first quarter of 2025. That would be the worst economic contraction since the second quarter of 2020. Historically, the S&P 500 has performed poorly during periods of economic contraction.

Here are the important details.

A stock-price chart shown in alarming red.
Image source: Getty Images.

Gross domestic product (GDP) measures the size of an economy. It’s calculated as the sum of four numbers: consumer spending, business spending, government spending, and net exports. In the U.S., quarterly GDP has declined during just two periods in the last 20 years, as detailed below:

  • 2008-2009: GDP declined 2.5% in Q4 2008 and remained negative through Q3 2009 as the housing market collapsed and borrowers defaulted on subprime mortgages. Those events led to the Great Recession.

  • 2020: GDP declined 7.5% in Q2 2020 and remained negative through Q4 2020 as the COVID-19 pandemic forced business closures and social distancing that disrupted supply chains around the world. Those events led to brief recession.

The events listed above correlated with sharp declines in the S&P 500, which is commonly regarded as the best gauge for the overall U.S. stock market. Specifically, the S&P 500 fell 56% from its high during the Great Recession, and the benchmark index fell 33% during the early days of the COVID-19 pandemic.

As mentioned, data from the Federal Reserve Bank of Atlanta shows GDP is on track to fall at an annualized rate of 1.8% in the first quarter of 2025, but that number isn’t yet finalized. The first quarter doesn’t end until March 31, and the Bureau of Economic analysis won’t publish a finalized number until April 30.

Consumer spending, which accounts for two-thirds of GDP, rose 4.2% in the fourth quarter, but growth is on track to decelerate to 0.4% in the first quarter amid concerns about inflation and tariffs. Consumer spending in January unexpectedly fell, the first month-on-month decline in two years. And consumer sentiment in February reached its lowest level since November 2022.

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