The NAS100, also known as the Nasdaq-100 Index, is one of the most widely followed stock market indices in the world. Comprising 100 of the largest non-financial companies listed on the Nasdaq Stock Market, the NAS100 provides investors with valuable insights into the performance of the technology and internet-related sectors. As with any financial instrument, understanding its trading hours is crucial for traders and investors looking to capitalize on market opportunities. In this article, we delve into the trading hours of the NAS100 and the factors that influence its opening time.

Global Markets and Time Zones

The NAS100 is traded on the Nasdaq Stock Market, which is located in the United States. Consequently, its trading hours are influenced by the time zone of the U.S. Eastern Time (ET). However, it’s important to note that the global nature of financial markets means that the opening and closing times of various markets around the world impact when the NAS100 starts trading each day.

Regular Trading Hours

The regular trading hours for the NAS100 are as follows:

  1. Pre-Market Trading: The NAS100 opens for pre-market trading at 4:00 AM ET. During this phase, traders can place orders, but liquidity might be lower than during regular trading hours. Pre-market trading allows investors to react to overnight news and events that could impact the market.
  2. Regular Trading Hours: The primary trading session for the NAS100 begins at 9:30 AM ET and continues until 4:00 PM ET. This is when the market experiences the highest trading volumes and volatility. Most of the day’s significant price movements occur during these hours.
  3. After-Hours Trading: After the regular trading hours, the NAS100 remains open for after-hours trading from 4:00 PM to 8:00 PM ET. This extended trading session allows investors to react to earnings reports and other news that may have been released after the market closed.

Factors Influencing Opening Time

Several factors influence the opening time of the NAS100:

  1. Global Economic Calendar: Economic events and data releases from around the world can impact market sentiment and influence the opening direction of the NAS100. Traders often keep an eye on economic indicators and central bank announcements to gauge potential market moves.
  2. Overnight Developments: News, events, and geopolitical developments that occur while the U.S. markets are closed can lead to gaps in the NAS100’s opening price. Traders need to be aware of these developments to adjust their strategies accordingly.
  3. Futures Markets: The NAS100’s opening price is often influenced by trading activity in the futures markets before the official stock market opening. Futures trading can provide insights into market sentiment before the regular trading session begins.


Understanding the trading hours of the NAS100 is essential for investors and traders seeking to make informed decisions in the fast-paced world of financial markets. The NAS100’s trading hours are influenced by a combination of global market dynamics, economic events, and overnight developments. Whether you’re an experienced trader or a novice investor, keeping track of the NAS100’s opening times and staying informed about market-moving events can help you navigate the complexities of the stock market with greater confidence.

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