Exchange ecosystem
Nasdaq is more than one index
The term Nasdaq designates an electronic exchange venue, an international exchange operator (Nasdaq, Inc.), and multiple distinct market benchmarks. A company listing on Nasdaq, the broad Nasdaq Composite Index, and the selective Nasdaq-100 Index operate under entirely different administrative rules. The exchange provides the electronic order book and clearing venue where market makers, algorithmic participants, and retail brokerages submit bids and offers to establish transaction prices.
Index administrators, by contrast, apply strict eligibility screens, sector exclusions, and weighting formulas to calculate synthetic performance indicators. The Nasdaq Composite represents a comprehensive census of exchange-listed equities, while the Nasdaq-100 reflects an elite benchmark of top non-financial enterprises. Conflating the two benchmarks obscures critical differences in portfolio concentration, dividend yields, and volatility characteristics.
Exchange to benchmark
- Company lists on exchange
- Security enters index eligibility pool
- Rulebook assigns capitalization weight
- Continuous trade execution updates index
Always verify whether an analysis refers to the exchange operator, the broad Composite, the Nasdaq-100, or a tracking ETF like QQQ.



