The Stock Market Crash of 1929 occurred due to several underlying economic problems that emerged in the 1920s. Farmers were producing more crops than could be sold at a profit, consumers and farmers were taking on increasing debt, and basic industries were struggling. Speculation in the stock market was rampant, with many buying stocks on margin using borrowed money. On October 24, 1929, the stock market took a major plunge as panic set in and investors unloaded their shares. The selling accelerated on October 29, known as "Black Tuesday," with over 16 million shares dumped. By November, investors had lost around $30 billion. Bank and business failures followed as banks had invested in the stock market and many were forced to close.