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Indices

The Authoritative Source for Global Indices

Standard & Poor's is the authoritative source for world indices, including one of the most well known indices in the world, the S&P 500 Index. Standard & Poor's indices are used by financial professionals and investors around the world for investment performance measurement and as the basis for a wide range of financial instruments, such as index funds, futures, options, and exchange-traded funds (ETFs). More assets are linked to our global indices than to all other index providers combined. In fact, the S&P 500, the most widely tracked index in the world, has more than $1 trillion directly linked to it.

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S&P 500

Find out what stocks currently make up the S&P 500 Index. This index tracks the performance of the large cap U.S. equity market. The "500" is one of the most widely used benchmarks of U.S. equity performance.

Current Prices

A snapshot of current and historical index levels for key U.S. market indices, including index levels, index highs and lows and historical performance charts.

S&P MidCap 400

Find out what stocks currently make up the S&P MidCap 400 Index. This index tracks the performance of the mid-cap portion of the U.S. equity market.

Indices Tutorial

The S&P index maintenance process is confidential and unique. This tutorial describes the several criteria used by the S&P Index Committee in determining the constituents of the S&P U.S. indices.

S&P SmallCap 600

Find out what stocks currently make up the S&P SmallCap 600 Index. This index tracks the performance of the small-cap portion of the U.S. equity market.