Fisk, James (1834-1872), was an American financier who was involved in several business scandals in the late 1800's. Fisk helped cause the collapse of the gold market on Sept. 24, 1869, known as Black Friday. He and industrialist Jay Gould had tried to monopolize the market by buying all the gold in New York City. The United States Treasury intervened, and the price of gold fell. Fisk and Gould, however, made $11 million in profit.