Nasdaq Announces Annual Reconstitution of the Nasdaq-100 Index
1. Key Additions and Removals
On December 13, 2025, Nasdaq Inc. (Nasdaq: NDAQ) revealed the results of its annual reconstitution of the Nasdaq-100 Index® (NDX®), set to take effect before the market opens on December 22, 2025. This annual event is pivotal for investors and market watchers, as it reflects the changing dynamics of the stock market and the performance of leading non-financial companies listed on the Nasdaq Stock Market®.
New Entrants to the Index
This year, six companies will be welcomed into the Nasdaq-100 Index, marking a significant shift in the index's composition. The new additions are:
- Alnylam Pharmaceuticals, Inc. (Nasdaq: ALNY)
- Ferrovial SE (Nasdaq: FER)
- Insmed Incorporated (Nasdaq: INSM)
- Monolithic Power Systems, Inc. (Nasdaq: MPWR)
- Seagate Technology Holdings plc (Nasdaq: STX)
- Western Digital Corp. (Nasdaq: WDC)
These companies represent a diverse range of industries, including biotechnology, technology, and data storage, highlighting the index's commitment to featuring firms that are at the forefront of innovation and growth.
Departures from the Index
In conjunction with these new additions, six companies will be removed from the Nasdaq-100 Index. The companies exiting the index are:
- Biogen Inc. (Nasdaq: BIIB)
- CDW Corporation (Nasdaq: CDW)
- GlobalFoundries Inc. (Nasdaq: GFS)
- Lululemon Athletica Inc. (Nasdaq: LULU)
- ON Semiconductor Corporation (Nasdaq: ON)
- The Trade Desk, Inc. (Nasdaq: TTD)
The removal of these firms reflects the ongoing evolution of the index, which aims to maintain a representation of companies that are not only large but also poised for future growth.
2. The Nasdaq-100 Index: A Snapshot
The Nasdaq-100 Index is globally recognized for tracking the performance of 100 of the largest non-financial companies on the Nasdaq Stock Market. This index encompasses a broad array of sectors, including technology, healthcare, retail, and media, making it a crucial barometer for the overall health of the economy and the stock market.
As of December 2025, the Nasdaq-100 Index underpins more than 200 tracking products, boasting over $600 billion in assets under management worldwide. Among these is the Invesco QQQ Trust (QQQ®), which aims to replicate the performance of the index, providing investors with a robust tool for exposure to these leading companies.
3. Importance of the Reconstitution
The annual reconstitution of the Nasdaq-100 Index is strategically timed to coincide with the quadruple witch expiration Friday of the quarter, a period marked by the expiration of various derivatives that can impact market volatility. By adjusting the index at this time, Nasdaq ensures that it reflects the most current market landscape, allowing investors to make informed decisions based on the latest data.
A Commitment to Transparency and Innovation
Nasdaq Global Indexes has been at the forefront of creating innovative and transparent indexes since 1971. The organization continuously seeks to provide diverse investment opportunities across various asset classes, serving as a vital resource for financial product sponsors and asset managers.
As a leading global technology company, Nasdaq is dedicated to enhancing liquidity, transparency, and integrity within the global economy. Its comprehensive suite of data, analytics, and client-centric services empowers investors to navigate the complexities of the financial markets confidently.
4. Conclusion
The annual reconstitution of the Nasdaq-100 Index not only reflects the changing tides of the market but also underscores the importance of adaptability in investing strategies. As new leaders emerge and others step back, investors will need to keep a keen eye on these developments to leverage the full potential of their portfolios in the evolving economic landscape.