The Wall Street Order is a type of order used in stock trading. It consists of three parts: SELL (SEL), BUY (BUY) and PUT (PUT). A SELL order is an instruction to SELL a certain amount of a security at the current market price. A BUY order is an instruction to BUY a certain amount of a security at the current market price. Finally, a PUT order is an instruction to SELL a certain amount of a security at a predetermined price. All three orders are used to facilitate stock trading on Wall Street.