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Financial encyclopediaReviewed 2026-10-23

Market Index

A measurement of the performance of a specific "basket" of stocks considered to represent a particular market or sector of the U. S. economy. For example, the Dow Jones Industrial Average (DJIA) is an index of 30 "blue chip" stocks of U.S. companies.

Sources and references ↗
PROFILE / FACT FILE

Concept at a glance

Term
Market Index [1]
Subject area
Investor.gov glossary [1]
Jurisdiction / scope
US regulatory and investor-education context [1]
Primary reference
SEC · Investor.gov [1]

Definition and explanation

A measurement of the performance of a specific "basket" of stocks considered to represent a particular market or sector of the U. S. economy. For example, the Dow Jones Industrial Average (DJIA) is an index of 30 "blue chip" stocks of U.S. companies. [1]

Frequently asked questions

What does Market Index mean in the cited reference?

A measurement of the performance of a specific "basket" of stocks considered to represent a particular market or sector of the U. S. economy. For example, the Dow Jones Industrial Average (DJIA) is an index of 30 "blue chip" stocks of U.S. companies. [1]

Sources and review dates

  1. US SEC · Investor.gov — Market Index ↗

Reviewed 23 October 2026. Historical dates and award-time affiliations retain their original context. A review date is not an event date. Background sources are identified separately from official records.

Content preparation: source-based compilation with AI assistance. See methods and attribution. Named sources identify the underlying records; no individual expert review is claimed.