The world's first predictions market was the Iowa Political Stock Market, which was founded by three professors-George R. Neumann, Robert Forsythe, and Forrest Nelson-at the University of Iowa's business school in 1988.
全球第一個「預測市場」，是由美國愛荷華大學於 1988 年成立的「愛荷華政治股票市場」。