If the stock price doubled to $2,000, you could sell it, pay back the $900 loan, and walk away with $1,100—nearly a on your initial $100 investment. This "leverage" turned modest savings into overnight fortunes, creating a feedback loop where rising prices attracted more margin buyers, pushing prices even higher. The Rise of the Speculative Bubble
The 1920s, often called the "Roaring Twenties," was a decade defined by jazz, rapid industrialization, and an almost religious faith in the American stock market. For the first time in history, the average citizen felt the lure of Wall Street. However, this era of unprecedented prosperity was built on a fragile foundation: buying on margin great depression
By 1929, an estimated was out on loan to stock speculators—more than the total amount of currency circulating in the United States at the time. This massive influx of borrowed money disconnected stock prices from the actual value of the companies. If the stock price doubled to $2,000, you
Brokers had borrowed the money they lent to investors from commercial banks. When investors defaulted on their margin loans, the brokers couldn't pay back the banks. When the banks lost that money, they couldn't fulfill withdrawals for ordinary citizens who had never bought a single share of stock. This led to bank runs, the closing of thousands of financial institutions, and a complete freeze on credit that paralyzed the American economy for a decade. The Legacy: Regulation and Caution For the first time in history, the average