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  1. What Is an Index? Examples, How It's Used, and How to Invest

    May 18, 2025 · An index measures the performance of a basket of securities intended to replicate a certain area of the market such as the Standard & Poor's 500.

  2. INDEX Definition & Meaning - Merriam-Webster

    The meaning of INDEX is a list (as of bibliographical information or citations to a body of literature) arranged usually in alphabetical order of some specified datum (such as author, subject, or keyword).

  3. What Is a Stock Market Index? - The Motley Fool

    Sep 11, 2025 · Index funds offer a cost-effective way to match overall market performance for long-term gains. A stock market index shows how investors feel an economy is faring. An index collects data …

  4. What is an index? Definitions & actionable insights | iShares

    Oct 10, 2024 · WHAT IS AN INDEX? An index is an indicator, sign, or way to measure something. In financial terms, an index reflects the price of a collection of stocks, bonds, commodities, or other …

  5. What is an index? | Definitions for investing | Pearler

    Apr 13, 2025 · Definition: what is an index? An index is a way to measure the performance of a group of investments. Most often, it tracks a group of shares . Each index follows a set of rules. These rules …

  6. What is an index? - MSCI

    Indexes measure the performance of a market and enable investors to better understand the collective movement of a group of stocks, bonds or other security types. Markets can be defined in many ways.

  7. Index: Definition, Meaning, and Examples - usdictionary.com

    Jul 26, 2025 · "Index" refers to an organized system for listing or measuring information. Its diverse applications make it an indispensable tool in literature, economics, and technology.

  8. INDEX | definition in the Cambridge English Dictionary

    INDEX meaning: 1. an alphabetical list, such as one printed at the back of a book showing which page a subject…. Learn more.

  9. Index Definition & Meaning | Britannica Dictionary

    INDEX meaning: 1 : an ordered list: such as; 2 : an alphabetical list at the end of a book that shows the page where each thing in the list can be found

  10. What is an index? | LSEG

    May 2, 2025 · What is an index? An index is a hypothetical portfolio of securities designed to represent an asset class, market or market segment. For example, the well-known FTSE 100 Index measures …