That's the guy that bought stock and got a lot of money because of the bull market
In the early 1920's not many people knew about stock or bought it.
Money
Money
Money
People would purchase stock with some of their own money and then borrow the rest. They had to pay the money they borrowed back.
Debt
Debt
Debt
Stock eventually became more popular and more people bought which created the stock to increase, this created the bull market.
No stock
No stock
No stock
Eventually stock became something that everyone would buy because they would use credit and wouldn't have to pay for the entire total.
Eventually people would go into debt because they couldn't pay what they needed to pay back. One day they had enough money the next day they didn't know if they would have enough with stock constantly going up and down
Eventually they realized that stock speculation wasn't gonna work and most of the people that had to try to sell it.