Stock Market Basics: How the New York Stock Exchange Works - Tutorial Cartoon (1952)

A stock market or equity market is a public (a loose network of economic transactions, not a physical facility or discrete entity) for the trading of company stock (shares) and derivatives at an agreed price; these are securities listed on a stock exchange as well as those only traded privately.

The size of the world stock market was estimated at about $36.6 trillion at the start of October 2008. The total world derivatives market has been estimated at about $791 trillion face or nominal value, 11 times the size of the entire world economy. The value of the derivatives market, because it is stated in terms of notional values, cannot be directly compared to a stock or a fixed income security, which traditionally refers to an actual value. Moreover, the vast majority of derivatives 'cancel' each other out (i.e., a derivative 'bet' on an event occurring is offset by a comparable derivative 'bet' on the event not occurring). Many such relatively illiquid securities are valued as marked to model, rather than an actual market price.

The stocks are listed and traded on stock exchanges which are entities of a corporation or mutual organization specialized in the business of bringing buyers and sellers of the organizations to a listing of stocks and securities together. The largest stock market in the United States, by market cap, is the New York Stock Exchange, NYSE. In Canada, the largest stock market is the Toronto Stock Exchange. Major European examples of stock exchanges include the London Stock Exchange, Paris Bourse, and the Deutsche Börse. Asian examples include the Tokyo Stock Exchange, the Hong Kong Stock Exchange, the Shanghai Stock Exchange, and the Bombay Stock Exchange. In Latin America, there are such exchanges as the BM&F Bovespa and the BMV.

The New York Stock Exchange (NYSE) is a stock exchange located at 11 Wall Street in lower Manhattan, New York City, USA. It is the world's largest stock exchange by market capitalization of its listed companies at US$11.92 trillion as of Aug 2010. Average daily trading value was approximately US$153 billion in 2008.

The NYSE is operated by NYSE Euronext, which was formed by the NYSE's 2007 merger with the fully electronic stock exchange Euronext. The NYSE trading floor is located at 11 Wall Street and is composed of four rooms used for the facilitation of trading. A fifth trading room, located at 30 Broad Street, was closed in February 2007. The main building, located at 18 Broad Street, between the corners of Wall Street and Exchange Place, was designated a National Historic Landmark in 1978, as was the 11 Wall Street building.

In 1792, The NYSE acquires its first traded securities. In 1817, The constitution of the New York Stock and Exchange Board is adopted. In 1867, The First Stock Ticker. In 1896, Dow Jones Industrial Average first published in The Wall Street Journal. In 1903, NYSE moves into new quarters at 18 Broad Street. In 1906, Dow exceeds 100 on January 12. In 1907, Panic of 1907. In 1914, World War I causes the longest exchange shutdown: four months, two weeks; re-opening December 12 brings the largest one-day percentage drop in the DJIA (24.4%). In 1915, Market price is given in dollars. In 1929, Central quote system established; Black Thursday, October 24 and Black Tuesday, October 29 signal the end of the Roaring Twenties bull market. In 1943, Trading floor is opened to women. In 1949, Longest (eight-year) bull market begins.

In 1954, Dow surpasses its 1929 peak in inflation-adjusted dollars. In 1956, Dow closes above 500 for the first time on March 12. In 1966, the NYSE begins a composite index of all listed common stocks. This is referred to as the "Common Stock Index" and is transmitted daily. The starting point of the index is 50. It is later renamed the NYSE Composite Index. In 1967, Protesters led by Abbie Hoffman throw mostly fake dollar bills at traders from gallery, leading to the installation of bullet-proof glass. In 1970, Securities Investor Protection Corporation established. In 1971, NYSE recognized as Not-for-Profit organization. In 1972, Dow closes above 1,000 for the first time on November 14. In 1977, Foreign brokers are admitted to NYSE. In 1980, New York Futures Exchange established. In 1982, Longest bull market in DJIA history begins. In 1987, Black Monday, October 19, sees the second-largest one-day DJIA percentage drop (22.6%) in history. In 1991, Dow exceeds 3,000. In 1995, Dow exceeds 5,000. In 1996, Real-time ticker introduced. In 1999, Dow exceeds 10,000 on March 29. In 2000, Dow peaks at 11,722.98 on January 14; first NYSE global index is launched under the ticker NYIID.