The stock market sell-off has intensified, with the Dow Jones Industrial Average and S&P 500 both down over 10% from their recent highs and the Nasdaq Composite down over 20% as of this writing-- putting the growth-heavy index in a bear market.

Stocks continued to tumble in the U.S. Friday as financial markets suffered their biggest two-day drop since 2020.

Dow, S&P 500, and Nasdaq 100 futures are rising in premarket trading as the stock market reacts to President Donald Trump's tariffs on the day they kick in.

The stock market crash of October 1929 signaled the end of the "Roaring Twenties" and the beginning of the Great Depression. This was the second day of the big drop, known as "Black Tuesday," which began one day earlier and occupies the next spot on this list. 3.) Oct. 28, 1929 (-38.33, -12.82%)

While investors might not be thrilled with President Trump's tariff policies or Wall Street's reaction through the early stages of his second term, one thing that's a veritable certainty is that the latest elevator move lower in the Dow Jones Industrial Average, S&P 500 and Nasdaq Composite provides an opportunity for long-term investors to shine.

U.S. stocks ended another tumultuous day lower as markets reel from President Donald Trump’s latest threats to crank his tariffs higher. The S&P 500 sank 0.2%. The Dow Jones Industrial Average fell 349 points,

The Dow dropped 349 points, or 0.91%, while the tech-heavy Nasdaq ticked up 0.1%. The S &P 500 closed down 0.23%. Its 8.5% high/low spread has only happened 20 other times since 1962, according to S &P Global. The S &P 500 briefly entered bear market territory during the session but was last off nearly 18% from its recent high.