The S&P 500 is a benchmark for the U.S. stock market. When you invest in the S&P 500, you’re investing in the top 500 companies in the United States (and some of the largest companies in the world).
The easiest way to invest in the S&P 500 is through an index fund or exchange-traded fund (ETF). But when you buy shares of these funds, what exactly are you buying?
