How is the S&P 500 Calculated?
I am curious as to what the value of the S&P means and how it is calculated. So for example, when Bloomberg reports that the S&P 500 cloded at 12,000, what does that be set to? Is the 12,000 the market caps of adjectives 500 stocks divided by the number of stocks?
Answers: The S&P 500 is a U.S. market index that gives investors an notion of the overall movement in the U.S. equity market. The convenience of the S&P 500 constantly changes based on the movement of 500 underlying stocks. The index is computed by weighted average flea market capitalization.
The first step in this methodology is to compute the market capitalization of respectively component in the index. This is done by taking the number of outstanding shares of each company and multiplying that number by the company's current share price, or souk value. For example, if Apple Computer has roughly 830 million shares outstanding and its current marketplace price is $53.55, the market capitalization for the company is $44.45 billion (830 million x $53.55). Next, the market capitalizations for adjectives 500 component stocks are summed to obtain the total market capitalization of the S&P 500, as illustrate in the table below. This market capitalization number will fluctuate as the underlying share prices and outstanding share numbers relocate.
In order to understand how the underlying stocks affect the index, the souk weight (index weight) needs to be calculated. This is done by dividing the souk capitalization of a company on the index by the total market capitalization of the index. For example, if Exxon Mobil's market trilby is $367.05 billion and the S&P 500 market cap is $10.64 trillion, this give Exxon a market weight of roughly 3.45% ($367.05 billion / $10.64 trillion). The larger the open market weight of a company, the more impact each 1% alteration will have on the index. For example, if Exxon Mobil were to rise by 20% while adjectives other companies remained unchanged, the S&P 500 would increase in pro by 0.6899% (3.45% x 20%). If a similar situation were to happen to The New York Times, it would do a much smaller, 0.0076% change to the index because of the company's smaller market counterbalance.
It's an index calculated and sold by Standard and Poor. It's the number one marker when judging reading of mutual funds. 80% of mutual funds do not beat the SP 500 over the long term. The exact formula is a undeclared as those that supposedly track the SP500 are off by a little. It's base on weight of companies (bigger companies get more weight/take up a larger percentage), dividends and logically the stock prices of those companies. If you like to read, here is the PDF link for the S&P 500 weighting methodology.
http://www2.standardandpoors.com/spf/pdf...
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Answers: The S&P 500 is a U.S. market index that gives investors an notion of the overall movement in the U.S. equity market. The convenience of the S&P 500 constantly changes based on the movement of 500 underlying stocks. The index is computed by weighted average flea market capitalization.
The first step in this methodology is to compute the market capitalization of respectively component in the index. This is done by taking the number of outstanding shares of each company and multiplying that number by the company's current share price, or souk value. For example, if Apple Computer has roughly 830 million shares outstanding and its current marketplace price is $53.55, the market capitalization for the company is $44.45 billion (830 million x $53.55). Next, the market capitalizations for adjectives 500 component stocks are summed to obtain the total market capitalization of the S&P 500, as illustrate in the table below. This market capitalization number will fluctuate as the underlying share prices and outstanding share numbers relocate.
In order to understand how the underlying stocks affect the index, the souk weight (index weight) needs to be calculated. This is done by dividing the souk capitalization of a company on the index by the total market capitalization of the index. For example, if Exxon Mobil's market trilby is $367.05 billion and the S&P 500 market cap is $10.64 trillion, this give Exxon a market weight of roughly 3.45% ($367.05 billion / $10.64 trillion). The larger the open market weight of a company, the more impact each 1% alteration will have on the index. For example, if Exxon Mobil were to rise by 20% while adjectives other companies remained unchanged, the S&P 500 would increase in pro by 0.6899% (3.45% x 20%). If a similar situation were to happen to The New York Times, it would do a much smaller, 0.0076% change to the index because of the company's smaller market counterbalance.
It's an index calculated and sold by Standard and Poor. It's the number one marker when judging reading of mutual funds. 80% of mutual funds do not beat the SP 500 over the long term. The exact formula is a undeclared as those that supposedly track the SP500 are off by a little. It's base on weight of companies (bigger companies get more weight/take up a larger percentage), dividends and logically the stock prices of those companies. If you like to read, here is the PDF link for the S&P 500 weighting methodology.
http://www2.standardandpoors.com/spf/pdf...