A complete guide to understanding and investing in the S&P 500.
The S&P 500 is a stock market index that represents the performance of 500 of the largest publicly traded companies in the United States. It is one of the most commonly followed equity indices and is widely regarded as the best gauge of large-cap U.S. equities.
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You cannot invest in the S&P 500 directly. However, you can invest in it through exchange-traded funds (ETFs) or mutual funds that track the index. Popular ETFs include SPY (SPDR S&P 500 ETF Trust), IVV (iShares CORE S&P 500 ETF), and VOO (Vanguard S&P 500 ETF).
