The first stock market in the world was the London Stock Exchange. It was started in a coffeehouse, where traders used to meet to exchange shares, in 1773. The first stock exchange in the United States was started in Philadelphia in 1790. The Buttonwood Agreement, so named because it was signed under a buttonwood tree, marked the beginnings of New York’s Wall Street in 1792. The agreement was signed by 24 traders and was the first American organization of its kind to trade in securities. The traders renamed their venture as the New York Stock and Exchange Board in 1817.