The Nasdaq Stock Market (/ˈnæzˌdæk/ (listen), also known as Nasdaq) is an American stock exchange. It is ranked second on the list of stock exchanges by market capitalization of shares traded, behind only the New York Stock Exchange.^[2] The exchange platform is owned by Nasdaq, Inc.,^[3] which also owns the Nasdaq Nordic stock market network and several U.S. stock and options exchanges.

The Nasdaq Stock Market is owned and operated by Nasdaq, Inc.

"Nasdaq" was initially an acronym for the National Association of Securities Dealers Automated Quotations.^[4]

It was founded in 1971 by the National Association of Securities Dealers (NASD), now known as the Financial Industry Regulatory Authority (FINRA).^[5]

The Nasdaq stock market began operations on February 8, 1971. It was the world's first electronic stock market.^[5] At first, it was merely a "quotation system" and did not provide a way to perform electronic trades.^[6] The Nasdaq Stock Market helped lower the bid–ask spread (the difference between the bid price and the ask price of the stock) but was unpopular among brokers as it reduced their profits.

The NASDAQ Stock Market eventually assumed the majority of major trades that had been executed by the over-the-counter (OTC) system of trading, but there are still many securities traded in this fashion. As late as 1987, the Nasdaq exchange was still commonly referred to as "OTC" in media reports^[7] and also in the monthly Stock Guides (stock guides and procedures) issued by Standard & Poor's Corporation.

Over the years, the Nasdaq Stock Market became more of a stock market by adding trade and volume reporting and automated trading systems.

In 1981 Nasdaq traded 37% of the U.S. securities markets' total of 21 billion shares. By 1991, Nasdaq's share had grown to 46%.^[8]

In 1998, it was the first stock market in the United States to trade online, using the slogan "the stock market for the next hundred years".^[9] The Nasdaq Stock Market attracted many companies during the dot-com bubble.

Its main index is the NASDAQ Composite, which has been published since its inception. The QQQ exchange-traded fund tracks the large-cap NASDAQ-100 index, which was introduced in 1985 alongside the NASDAQ Financial-100 Index, which tracks the largest 100 companies in terms of market capitalization.

In 1992, the Nasdaq Stock Market joined with the London Stock Exchange to form the first intercontinental linkage of capital markets.^[10]

The National Association of Securities Dealers spun off the Nasdaq Stock Market in 2000 to form a public company.

On March 10, 2000, the NASDAQ Composite stock market index peaked at 5,132.52, but fell to 3,227 by April 17,^[11] and in the following 30 months fell 78% from its peak.^[12]

In a series of sales in 2000 and 2001, FINRA sold its stake in the Nasdaq.

On July 2, 2002 Nasdaq Inc. became a public company via an initial public offering.^[13]

In 2006, the status of the Nasdaq Stock Market was changed from a stock market to a licensed national securities exchange.^[14]

In 2010, Nasdaq merged with OMX, a leading exchange operator in the Nordic countries, expanded its global footprint, and changed its name to the NASDAQ OMX Group.^[15]

To qualify for listing on the exchange, a company must be registered with the United States Securities and Exchange Commission (SEC), must have at least three market makers (financial firms that act as brokers or dealers for specific securities) and must meet minimum requirements for assets, capital, public shares, and shareholders.

In February 2011, in the wake of an announced merger of NYSE Euronext with Deutsche Börse, speculation developed that NASDAQ OMX and Intercontinental Exchange (ICE) could mount a counter-bid of their own for NYSE. NASDAQ OMX could be looking to acquire the American exchange's cash equities business, ICE the derivatives business. At the time, "NYSE Euronext's market value was $9.75 billion. Nasdaq was valued at $5.78 billion, while ICE was valued at $9.45 billion."^[16] Late in the month, Nasdaq was reported to be considering asking either ICE or the Chicago Mercantile Exchange to join in what would probably have to be, if it proceeded, an $11–12 billion counterbid.^[17]

In December 2005, NASDAQ acquired Instinet for $1.9 billion, retaining the Inet ECN and subsequently selling the agency brokerage business to Silver Lake Partners and Instinet management.^[18][19][20]

The European Association of Securities Dealers Automatic Quotation System (EASDAQ) was founded as a European equivalent to the Nasdaq Stock Market. It was purchased by NASDAQ in 2001 and became NASDAQ Europe. In 2003, operations were shut down as a result of the burst of the dot-com bubble.^[21] In 2007, NASDAQ Europe was revived first as Equiduct, and later that year, it was acquired by Börse Berlin.^[22]

On June 18, 2012, Nasdaq OMX became a founding member of the United Nations Sustainable Stock Exchanges Initiative on the eve of the United Nations Conference on Sustainable Development (Rio+20).^[23][24]

In November 2016, chief operating officer Adena Friedman was promoted to chief executive officer, becoming the first woman to run a major exchange in the U.S.^[25]

In 2016, Nasdaq earned $272 million in listings-related revenues.^[26]

In October 2018, the SEC ruled that the New York Stock Exchange and Nasdaq did not justify the continued price increases when selling market data.^[27][28][29]

Nasdaq quotes are available at three levels:

The Nasdaq Stock Market sessions, with times in the Eastern Time Zone are:

4:00 a.m. to 9:30 a.m. Extended hours trading session (premarket)

9:30 a.m. to 4:00 p.m. normal trading session

4:00 p.m. to 8:00 p.m. Extended hours trading session (postmarket)^[32]

The Nasdaq Stock Market averages about 253 trading days per year.

The Nasdaq Stock Market has three different market tiers: