S&P 500 Index: What It’s for and Why It’s Important in Investing
https://www.investopedia.com/terms/s/sp500.asp
WebSep 22, 2023 · Fact checked by Jiwon Ma. What Is the S&P 500 Index? The S&P 500 Index, or Standard & Poor's 500 Index, is a market-capitalization-weighted index of 500 leading publicly traded companies in the...
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