The New York Stock Exchange (often abbreviated to NYSE) is the world's largest place to buy, sell and exchange stocks. It originated with the Buttonwood Agreement when in 1792 a group of speculators gathered under a buttonwood tree in what is now known as Wall Street in lower Manhattan, NYC. They met to create rules on how the speculative market would work. The result was a brief document consisting of two sentences is was called the Buttonwood Agreement. Their first official meeting place was the Tontine Coffee House on Wall Street 1793. In 1817, they became known as the New York Stock & Exchange Board. It was changed to the New York Stock Exchange in 1863.