Nasdaq-100
blue-chip index consisting of the 100 major companies trading on NASDAQ

The Nasdaq-100 is a stock market index made up of equity securities issued by 100 of the largest non-financial companies listed on the Nasdaq stock exchange. The Nasdaq-100 is often abbreviated as NDX, NDQ, NAS100, or US100. The Nasdaq-100 index is a public float weighted/capitalization-weighted index, with a maximum weight of 24% for the largest component.
Products linked to the Nasdaq-100 include index funds (exchange-traded funds/ETFs and mutual funds) as well as derivatives (options and futures contracts), which are available for trading in many countries with the goal of replicating the performance of the index. Also available are modified index funds; they replicate the performance of the index with modifications such as the use of covered call strategies, equal weighting, performance buffers, leverage, inclusion of only growth or value stocks, or exclusion of certain sectors, all with the goal of changing the risk/return and yield. Invesco QQQ, with approximately $500 billion in assets, has the highest average daily volume of all Nasdaq-100 ETFs. In total, there is approximately $1.4 trillion in assets tracking the index.
History
The Nasdaq-100 was launched on January 31, 1985, by the Nasdaq. It created two indices: the Nasdaq-100, which consists of industrial, technology, retail, telecommunication, biotechnology, health care, transportation, mass media and service companies, and the Nasdaq Financial-100, which consists of banks, Insurance companies, brokerage firms, and mortgage loan companies.
The base price of the index was initially set at 250.
Begin with the source’s own compact description: “Nasdaq-100” is blue-chip index consisting of the 100 major companies trading on NASDAQ. The dossier treats that line as a proposition to test through Nasdaq-100, blue-chip and index, not as a finished interpretation.
Why this record matters
The phrase “blue-chip index consisting of the 100 major companies trading on NASDAQ” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q507306. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1985.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Nasdaq-100”, its source revision and the description used here.
- Expand the search: follow Nasdaq-100 primary sources, Nasdaq-100 archive and Nasdaq-100 research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Nasdaq-100”?
- Which institution is responsible for the underlying evidence?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Nasdaq-100” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.