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Nasdaq-100

The Nasdaq-100 is a stock market index of the largest non-financial companies listed on the Nasdaq Stock Market.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

The Nasdaq-100 is a stock market index of the largest non-financial companies listed on the Nasdaq Stock Market. It is market-capitalization weighted and is widely used as a benchmark for large-cap growth and technology-oriented stocks. The index includes domestic and international companies listed on Nasdaq and is heavily weighted toward technology, but also includes companies in consumer services, healthcare, and industrials.

Composition

The Nasdaq-100 consists of the 100 largest non-financial companies listed on Nasdaq, based on market capitalization. It includes both U.S. and international issuers and spans sectors such as technology, retail, healthcare, and industrials. Because some constituent companies have multiple share classes, the number of listed securities can exceed 100 even when the index represents 100 issuers.

Methodology

The index is capitalization weighted, meaning larger companies generally have greater influence on performance. Nasdaq’s methodology also excludes financial companies and applies rules that can cap the weight of the largest component. The weighting method is free-float market-capitalization weighted.

History

The Nasdaq-100 was launched on January 31, 1985. Over time it has become one of the best-known U.S. equity benchmarks and a common reference point for technology and growth investing. Nasdaq says the index has become a major benchmark for large-cap growth investing.

Market use

The index is followed by many investment vehicles, including ETFs and mutual funds. It is often used to measure the performance of large, innovative, non-financial companies listed on Nasdaq. The index is widely tracked by exchange-traded funds, mutual funds, and other investment products.

Key facts

  • The Nasdaq-100 tracks the 100 largest non-financial companies listed on the Nasdaq Stock Market.
  • It is market-capitalization weighted and excludes financial companies, including investment companies and REITs.
  • The index includes both U.S. and international issuers and is heavily weighted toward technology.
  • Because some constituents have multiple share classes, the number of securities can exceed 100.
  • The Nasdaq-100 is widely tracked by ETFs, mutual funds, and other investment products.
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Canadian context

Canadian investors commonly encounter the Nasdaq-100 through ETFs, index funds, and U.S. equity market coverage, especially because many of its largest constituents are major global technology companies.

Frequently asked questions

What is the Nasdaq-100?
It is a stock market index of the 100 largest non-financial companies listed on the Nasdaq Stock Market.
When was the Nasdaq-100 launched?
It was launched on January 31, 1985.
Does the Nasdaq-100 include financial companies?
No. Financial companies, including investment companies and REITs, are excluded.
Is the Nasdaq-100 the same as the Nasdaq Composite?
No. The Nasdaq-100 tracks 100 large non-financial companies, while the Nasdaq Composite includes a much broader set of Nasdaq-listed stocks.
Why can the index have more than 100 securities?
Some constituent companies have multiple share classes, so the number of securities can exceed the number of issuers.

References

  1. Nasdaq Indexeshttps://indexes.nasdaqomx.com/Index/Overview/NDX
    Supports: Definition of the Nasdaq-100, its non-financial selection rule, and sector coverage.
  2. Nasdaqhttps://www.nasdaq.com/docs/nasdaq-100-index-product-guide
    Supports: Overview of the index, its investment use, and positioning as a large-cap growth benchmark.
  3. Nasdaqhttps://www.nasdaq.com/solutions/global-indexes/nasdaq-100
    Supports: Exclusion of financial companies and description of the index as 100 innovative Nasdaq-listed companies.
  4. Nasdaqhttps://www.nasdaq.com/docs/2021/04/28/Nasdaq-100-Tracking-Innovation-Large-Cap-Growth.pdf
    Supports: Launch date, constituent-count explanation, and methodology context.
  5. SlickChartshttps://www.slickcharts.com/nasdaq100
    Supports: Current discussion of constituent securities count, sector mix, and market-cap weighting.