The Stock Market Has Crashed Following President Trump's Tariffs. History Says This Will Happen Next.

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Stock indexes have been posting records recently -- but not the kind of records investors like. The S&P 500 on Friday delivered its worst performance since the start of the pandemic back in 2020. And both the S&P 500 (SNPINDEX: ^GSPC) and the Nasdaq (NASDAQINDEX: ^IXIC) on March 31 completed their worst quarter since 2022. The Nasdaq even slipped into a bear market last week, represented by declines of at least 20% from its most recent high. Considering all of this, it's fair to say the market has crashed.

The reason for the turmoil? President Trump's tariffs on imports. Investors and analysts worry these duties will weigh on corporate and economic growth at home -- especially after the president broadened his initial tariff plan to include more countries and deeper levels of taxation. Now, the question is: After this market crash, what happens next? History offers us a strikingly clear answer.

An investor looks at a sign that shows a down arrow over the words "stock market."
Image source: Getty Images.

What's a market crash?

First, it's important to note that there isn't a specific percentage drop that signals a market crash, but generally, investors start speaking of a crash when indexes decline by more than 10% pretty quickly -- and that's the case right now. The Nasdaq has slipped about 10% over the past week, the S&P 500 and the Dow Jones Industrial Average are close behind.

As mentioned, investors are concerned about the impact of Trump's tariffs, levies on imports of most items from countries around the world. Since U.S. companies -- in particular high-growth tech players -- import raw materials and finished goods, they will have to pay these tariffs and that represents higher costs for them. They can either absorb these costs or pass them along to the consumer. In either situation, this is likely to weigh on earnings with results being greater expenses or fewer customers.

Now, to understand what might happen after this new crash, let's consider other periods of high costs for companies such as inflation and U.S. recessions. Past periods of higher inflation -- such as the early 1990s and more recently 2022 -- resulted in declines in the S&P 500, but the market didn't crash. In fact, in both periods, the index went on to gain rather quickly as inflation came down.

^SPX Chart
^SPX Chart

^SPX data by YCharts

Crashes and recessions

However, market crashes have occurred around past recessionary periods -- from the dot-com bubble in 2000 to the financial crisis of 2008 and the coronavirus crash of 2000. The shaded areas in the chart below show periods of recession.

^SPX Chart
^SPX Chart

^SPX data by YCharts

And here, what's compelling is the market, following each recession period, has quickly started to track higher. This is particularly the case following the past two recessions. Following the 2008 financial crisis, the S&P 500 and the Nasdaq gained positive momentum as of January 2009. And after the coronavirus crash and recession in March of 2000, stocks began to climb a month later.