As the world’s second-largest stock exchange based on market capitalization, the Nasdaq trades listed stocks as well as over-the-counter (OTC) stocks. Stock ticker symbols on the Nasdaq generally have four or five letters. A history of the Nasdaq shows a track record of groundbreaking accomplishments. In addition to being the first exchange to offer electronic trading, it was the first to launch a website, store records in the cloud, and sell its technology to other exchanges. In 2008, Nasdaq merged with OMX ABO, a Stockholm-based operator of Nordic and Baltic regional exchanges. The new company, Nasdaq, Inc., also offers trading in exchange-traded funds, debt, structured products, derivatives, and commodities.

Alternate Definition: The Nasdaq Composite, a market index fund (like the Dow or the S&P 500) designed to follow the general trends of the Nasdaq. Acronym: Originally styled as NASDAQ, the name is an acronym for the National Association of Securities Dealers Automated Quotations.

How the Nasdaq Works

From the beginning, the Nasdaq was designed to provide automated quotations. In the years following its founding, it regularly facilitated over-the-counter (OTC) trading, so much so that Nasdaq became synonymous with OTC and was often referred to as an OTC market by media and trade publications. Later, it added automated trading systems that could create trade and volume reports. It also became the first exchange to offer online trading. As a dealer’s market, all trades that investors make over Nasdaq’s electronic exchanges are completed through dealers—also known as “market makers”—rather than directly via auctions.

Nasdaq Trading Hours

Just like the NYSE, the Nasdaq is open for trading between 9:30 a.m. and 4 p.m. ET. Nasdaq offers traders “pre-market” and “post-market” hours. Pre-market hours are from 4 a.m. to 9:30 a.m. ET, and post-market hours are from 4 p.m. to 8 p.m. ET.

Nasdaq Listing Requirements

For stocks or securities to be listed on the Nasdaq electronic exchange, a company must:

Meet certain requirements based on its finances, liquidity, and corporate governance Be registered with the Securities Exchange Commission (SEC) Have at least three market makers Meet other requirements based on company size and trading volume

Once an application is submitted, it may take anywhere between four and six weeks for the company’s listing to be approved.

Nasdaq U.S. Market Tiers

Based on the listing requirements, a company’s stock will be listed in one of three market tiers:

Global Select Market: This composite is made up of the stocks of U.S. and international companies and is weighted based on market capitalization. Companies listed here must pass Nasdaq’s highest standards. Global Market listings are surveyed annually by Nasdaq’s Listing Qualifications Department, which will move them to the Global Select Market if eligible.Global Market: Nasdaq’s Global Market consists of stocks of companies listed in the United States and internationally. It is considered to be a mid-cap market. Capital Market: Once called the SmallCap Market before Nasdaq changed the name, the Capital Market is a large list of companies with smaller market capitalizations.

Nasdaq vs. NYSE

Together, the New York Stock Exchange and the Nasdaq represent a major portion of U.S. stock trading, but the two markets do have some distinctions.