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Market Index |
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Market index Market measure that consists of weighted values of the components that make up certain list of companies. A stock market tracks the performance of certain stocks by weighting them according to their prices and the number of outstanding shares by a particular formula. Stock Index A group of stocks put together in a standardized way to provide a useful window into a sector or market's performance at a glance. That is, a stock index groups together a certain list of stocks and usually takes an average of their prices so as to provide an idea of how the industry or market represented in the stock index is doing. Very often, stock indices are weighted to prevent a few data points from overwhelming it. For example, the S&P 500 is weighted according to market capitalization, while the DJIA is weighted for price.
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