NASDAQ was created on February 8, 1971 by the National Association of Securities Dealers in the United States in order to regulate the chaotic over-the-counter (OTC) trading and to provide a platform for small businesses to raise capital. Featuring the collection and distribution of stockbroker quotes for over-the-counter unlisted stocks, Nasdaq is now the second largest stock exchange in the world. With a total of more than 5,400 publicly traded companies, NASDAQ was the first stock market in the world to adopt electronic trading and is open to the world, with more than 260,000 computerized sales terminals in 55 countries and regions.
The Nasdaq Index is an average index of stock prices reflecting changes in the Nasdaq stock market, with a basic index of 100. Nasdaq companies listed on the Nasdaq cover all high-tech industries, including software, computers, telecommunications, biotechnology, retail and wholesale trade.
Each listed security has its own security code, securities and code one-to-one correspondence, and the code of the securities, once determined, will no longer change, which is mainly to facilitate computer recognition, the use of which is also more convenient. Nasdaq securities code by several (often four) capital letters of the alphabet, such as: BIDU, is Baidu August 5, 2005 in the Nasdaq listed securities code.