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Live Market Overview — Indices, Crypto, Forex, Bonds & Futures
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Stock Market Indices
Track the world's major stock market indices in one place
What are stock market indices?
A stock market index tracks the combined performance of a group of stocks, giving a snapshot of how a market or sector is doing overall. Well-known examples include the S&P 500, Nasdaq 100, and Dow Jones Industrial Average in the US, along with major indices from markets around the world.
Indices are often used as a benchmark — a way to gauge how "the market" as a whole is performing, rather than tracking any single company. The table below shows some of the world's most widely followed indices; click through to any one for a closer look at its chart and key facts.
What makes indices different from individual stocks
Stock market indices don't trade directly on an exchange the way individual stocks do — they're calculated values that track a defined basket of stocks, updated continuously during the trading hours of their underlying market. Because an index blends many companies together, it tends to move less dramatically day-to-day than any single stock within it, since gains in some constituents can offset losses in others.
Indices follow the trading hours of the market they track — the S&P 500 reflects US market hours, while the Nikkei 225 follows Japanese market hours — so different indices around the world are actively updating at different times of the global trading day.
How to read the table
The table below shows each index's current level — a calculated point value, not a "price" in the traditional sense — alongside its change over the selected period. Because different indices use different calculation methods and base values, raw point levels aren't directly comparable between them: a 100-point move means something very different for the Dow Jones versus the Nasdaq Composite, for example.
Percentage change is generally the more useful figure when comparing performance across different indices, since it accounts for these differences in scale.
How indices are built
Indices vary in how they select and weight their constituent companies. Some, like the S&P 500, are market-cap-weighted, meaning larger companies have more influence on the index's overall movement. Others, like the Dow Jones Industrial Average, are price-weighted, where higher-priced stocks carry more influence regardless of company size.
Indices also differ in scope — broad indices track hundreds of companies across many sectors, while narrower indices might focus on a single country, sector, or company size range.
Popular index charts
Click an index below to view its dedicated chart page with technical analysis, key facts, and more.
More questions about reading indices
Why do the Dow Jones and S&P 500 sometimes move differently on the same day?
They're built differently — the Dow is price-weighted and tracks only 30 companies, while the S&P 500 is market-cap-weighted across 500 companies. Different construction methods mean the same day's news can affect each index by a different amount.
What does it mean when an index is market-cap-weighted?
It means each company's influence on the index is proportional to its total market value, so large companies drive more of the index's movement than smaller ones — a big move in a mega-cap constituent can shift the whole index more than the same percentage move in a smaller company.
Can you buy an index directly?
Not directly — an index itself isn't a tradable security. Investors commonly gain exposure to an index's performance through index funds or ETFs designed to track it, or by trading index futures and derivatives.