Nasdaq Composite (IXIC) is one of the most important stock market indexes in the United States. Launched in 1971, it tracks the performance of nearly all common stocks listed on the Nasdaq Stock Market.
Unlike narrower indexes such as the Dow Jones Industrial Average (DJI) or the S&P 500 (SPX), the Nasdaq Composite includes thousands of securities from companies of different sizes and industries. However, the index has a strong concentration of technology, biotechnology, semiconductor, telecommunications, and innovation-driven companies.
Because of its exposure to growth-oriented businesses, the Nasdaq Composite is often viewed as a key indicator of the technology sector and the broader digital economy.
How the Nasdaq Composite Works
The Nasdaq Composite is a market capitalization-weighted index. Companies with larger market values have a greater influence on the index's performance.
Some of the largest companies represented in the index include:
• Apple (AAPL).
• Microsoft (MSFT).
• Amazon (AMZN).
• Meta Platforms (META).
• Nvidia (NVDA).
• Alphabet (GOOGL).
The index includes a broad range of Nasdaq-listed companies, making it one of the most comprehensive measures of the exchange's overall performance.
Nasdaq Composite vs. Nasdaq-100
Although the two indexes are closely related, they are not the same.
The Nasdaq-100 (NDX) tracks the 100 largest non-financial companies listed on Nasdaq, while the Nasdaq Composite includes thousands of securities across the entire exchange.
Because of this broader coverage, the Nasdaq Composite provides a more complete view of Nasdaq-listed companies, while the Nasdaq-100 is often used to track large-cap growth stocks.
How to Invest in Nasdaq-Related Indexes
Investors cannot purchase the Nasdaq Composite directly. However, they can gain exposure to Nasdaq-listed companies through ETFs, mutual funds, and other investment products.
Many of the most popular Nasdaq-related ETFs track the Nasdaq-100 (NDX) rather than the Nasdaq Composite itself. One example is the Invesco QQQ Trust (QQQ), one of the largest ETFs in the world.
Futures contracts linked to the Nasdaq-100 are also actively traded on major derivatives exchanges.
Why the Nasdaq Composite Matters
The Nasdaq Composite is widely used as:
• A benchmark for technology and innovation-focused investments.
• An indicator of investor sentiment toward growth stocks.
• A measure of the performance of Nasdaq-listed companies.
• A reference for analyzing trends in the digital economy.
Because many of its constituents operate in high-growth industries, the Nasdaq Composite tends to experience greater volatility than broader market indexes. At the same time, it has historically benefited from periods of strong technological innovation and economic expansion.