Summary
Market capitalization, sometimes referred to as market cap, is the total value of a publicly traded company's outstanding common shares owned by stockholders. Market capitalization is equal to the market price per common share multiplied by the number of common shares outstanding. Since outstanding stock is bought and sold in public markets, capitalization could be used as an indicator of public opinion of a company's net worth and is a determining factor in some forms of stock valuation. Market capitalization is sometimes used to rank the size of companies. It measures only the equity component of a company's capital structure, and does not reflect management's decision as to how much debt (or leverage) is used to finance the firm. A more comprehensive measure of a firm's size is enterprise value (EV), which gives effect to outstanding debt, preferred stock, and other factors. For insurance firms, a value called the embedded value (EV) has been used. It is also used in ranking the relative size of stock exchanges, being a measure of the sum of the market capitalizations of all companies listed on each stock exchange. The total capitalization of stock markets or economic regions may be compared with other economic indicators (e.g. the Buffett indicator). The total market capitalization of all publicly traded companies in 2020 was approximately US93trillion.Totalmarketcapitalizationofallpubliclytradedcompaniesintheworldfrom1975to2020.Marketcapisgivenbytheformula,whereMCisthemarketcapitalization,Nisthenumberofcommonsharesoutstanding,andPisthemarketpricepercommonshare.Forexample,ifacompanyhas4millioncommonsharesoutstandingandtheclosingpricepershareis93 trillion. Total market capitalization of all publicly traded companies in the world from 1975 to 2020. Market cap is given by the formula , where MC is the market capitalization, N is the number of common shares outstanding, and P is the market price per common share. For example, if a company has 4 million common shares outstanding and the closing price per share is 20, its market capitalization is then 80million.Iftheclosingpricepersharerisesto80 million. If the closing price per share rises to 21, the market cap becomes 84million.Ifitdropsto84 million. If it drops to 19 per share, the market cap falls to $76 million. This is in contrast to mercantile pricing where purchase price, average price and sale price may differ due to transaction costs.
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