What is an Index? | S&P Dow Jones Indices - S&P Global
https://www.spglobal.com/spdji/en/research-insights/index-literacy/what-is-an-index/
Web ResultAn index is a group or basket of securities, derivatives, or other financial instruments that represents and measures the performance of a specific market, asset class, market sector, or investment strategy. In other words, an index is a statistically representative sampling of any set of observable securities in a given market …
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