Britannica Sources used in this answer

How did stock speculation contribute to the stock market crash of 1929?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

A long line of unemployed men in coats and hats stands outside a soup kitchen in Chicago, with a storefront sign reading Free Soup, Coffee and Doughnuts for the Unemployed. — Great Depression Unemployed men standing in line outside a soup kitchen, Chicago.

During the 1920s, rampant stock speculation created a precarious financial environment that significantly contributed to the stock market crash of 1929. Driven by optimism, many investors—ranging from wealthy magnates to average citizens—poured their savings into the market, often by mortgaging their homes or selling bonds to raise cash.12

A primary driver of this instability was buying on margin. Investors would pay only a small fraction of a stock's price, typically 10 percent, and borrow the remainder from brokers using the stocks themselves as collateral. By mid-1929, approximately 300 million shares were being carried on margin. This practice was sustainable only as long as stock prices continued to rise; once prices began to decline, it triggered a catastrophic cycle.21

As the market wobbled, margin calls forced widespread liquidation, compelling investors to sell their holdings to cover their debts. This mass selling intensified the downward spiral, leading to the panic of Black Thursday and Black Tuesday, ultimately wiping out billions of dollars in value and fueling the Great Depression.21