What is market capitalization? [duplicate]
Market Capitalization is the product of the current share price (the last time someone sold a share of the stock, how much?) times the number of outstanding shares of stock, summed up over all of the stock categories. Assuming the efficient market hypothesis and a liquid market, this gives the current total value of the companies' assets (both tangible and intangible). Both the EMH and perfect liquidity may not hold at all times. Beyond those theoretical problems, in practice, someone trying to buy or sell the company at that price is going to be in for a surprise; the fact that someone wants to sell that many stocks, or buy that many stocks, will move the price of the company stock.