Both “indexes” and “indices” are correct English plurals of the singular noun “index.” But there is a preference for indices outside North America because of solid adherence to Latin plurals.

As you can see, "indexes" has numerous possibilities of use, in several contexts and with distinct meanings, whereas "indices" is only synonym with "indexes" when it refers to a particular meaning.

Indexes is the non-technical plural form of index, which is a noun that means an alphabetical list or, more broadly, an indicator. Many books include indexes of commonly used terms, and the S&P 500 …

Get the latest real-time quotes, historical performance, charts, and other stock market data across major world indexes.

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 …

Indexes and indices are both plural forms of the word index, which refers to a list or system used to organize information. While indexes is the more commonly used form in American English, indices is …

Sep 11, 2025 · Learn what a stock market index is and how to use it to your advantage when investing. Check out the live indexes listed here and become an expert at reading them.

May 18, 2025 · Indexes in financial markets are often used as benchmarks to evaluate an investment's performance against. Some of the most important indices in the U.S. markets are the S&P 500 and …

Cboe Indices Get streaming values for all these indices via the Cboe Global Indices Feed. The Index Feed is a market data service provided by Cboe Global Markets that delivers real-time index values …

15 hours ago · The U.S. stock market neared its all-time high after the Federal Reserve cut its main interest rate to bolster the job market, and hopes strengthened for more cuts to come in 2026.