Nasdaq-100
| Nasdaq-100 Index from 1985 to 2015 | |
| Foundation | January 31, 1985 | 
|---|---|
| Operator | Nasdaq, Inc. | 
| Exchanges | Nasdaq | 
| Trading symbol | ^NDX or NDX | 
| Constituents | 101 | 
| Type | Large-cap | 
| Market cap | US$25.34 trillion (as of May 1, 2025) | 
| Weighting method | Free-float capitalization-weighted | 
| Related indices | Nasdaq Financial-100 | 
| Website | nasdaq | 
The Nasdaq-100 (NDX) 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. It is a modified capitalization-weighted index. The stocks' weights in the index are based on their market capitalizations, with certain rules capping the influence of the largest components. It is limited to companies from a single exchange, and it does not have any financial companies. The financial companies are in a separate index, the Nasdaq Financial-100.