Why a borrowing binge by investors is a warning sign for the stock market

Investors are increasingly borrowing to buy stocks, a reflection of greed in the stock market as they seek to amplify returns with margin debt. The growing pile of borrowed money has some on Wall Street nervous. Investors are increasingly borrowing to buy stocks, a reflection of greed in the stock market as they seek to amplify returns with margin debt. The growing pile of borrowed money has some on Wall Street nervous.