The Standard and Poor's 500, or simply the S&P 500, is a stock market index tracking the stock performance of 500 of the largest companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices. As of December 31, 2021, according to surveys, more than $7.1 trillion was invested in assets tied to the performance of the index.The S&P 500 index is a free-float weighted/capitalization-weighted index. As of September 30, 2023, the nine largest companies on the list of S&P 500 companies accounted for 30.6% of the market capitalization of the index and were, in order of highest to lowest weighting: Apple, Microsoft, Amazon.com, Nvidia, Alphabet (including both class A & C shares), Tesla, Meta Platforms, Berkshire Hathaway, and Exxon Mobil. The components that have increased their dividends in 25 consecutive years are known as the S&P 500 Dividend Aristocrats.: 25 The index is one of the factors in computation of the Conference Board Leading Economic Index, used to forecast the direction...