Table of contents

What is the S&P 500? Defining the Stock Market's Key Measure

How the S&P 500 Works: Composition and Selection Criteria

Calculating the S&P 500: Market Cap Weighting Methodology

S&P 500 Components: Key Companies and Sectors

Investing in the S&P 500: Index Funds and ETFs

The S&P 500's Significance as an Economic Indicator

Frequently Asked Questions