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.

Real-time major world indices live - including the latest price, daily high, low and percentage change for each index. Click on any of the individual major world stock markets for technical...

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.

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 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 price of goods is an index [= indication] of business conditions. This search engine has indexed hundreds of millions of Web sites. Each term in the book is indexed.

21 hours ago · The U.S. stock market rose to the edge of its all-time high. The S&P 500 added 0.2% Friday and finished just shy of its record closing level, which was set in October.

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 …

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.