Ivan Boesky was a prominent American stock trader known for his involvement in insider trading during the 1980s. He amassed a fortune by trading on confidential information, leading to one of the biggest Wall Street scandals of the era. In 1986, Boesky was charged with insider trading, fined $100 million, and sentenced to three years in prison after cooperating with authorities. Boesky once said: "Greed is all right, by the way. I want you to know that. I think greed is healthy. You can be greedy and still feel good about yourself.”. His case highlighted the widespread issue of insider trading and contributed to significant regulatory changes in the financial industry.