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%)

CNBC host Jim Cramer raised alarm bells over the state of the stock market following President Donald Trump’s tariff announcement, which triggered a sharp decline last week. During Friday night’s broadcast of Mad Money,

Experts say the U.S. could be on the brink of a devastating market collapse like the 1987 crash, after President Donald Trump's tariff hikes.