The NASDAQ (National Association of Securities Dealers Automated Quotations) is an American stock exchange that was founded in 1971. It is the second-largest stock exchange in the world by market capitalization and is known for being an early adopter of electronic trading. The NASDAQ primarily deals in technology and growth-oriented stocks, making it a popular choice for investors looking to invest in these types of companies. The NASDAQ operates using a market maker system, where firms act as intermediaries between buyers and sellers to ensure a smooth and efficient trading process. Additionally, the NASDAQ operates several market indices, including the NASDAQ Composite Index, which tracks the performance of all NASDAQ-listed stocks.