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A securities exchange is a platform where securities, such as stocks, bonds, and derivatives, are bought and sold. Securities exchanges serve as a marketplace for buyers and sellers to trade securities and provide a mechanism for price discovery, where the supply and demand for securities determine their market price. Some of the most well-known securities exchanges include the New York Stock Exchange (NYSE), the NASDAQ Stock Market, and the Tokyo Stock Exchange. These exchanges have rules and regulations in place to ensure a fair and transparent market, and they provide a range of services to market participants, including the listing of securities, the execution of trades, and the dissemination of market data.