What is Market capitalisation?
The total market value of all outstanding shares of a joint-stock company: the current market price of one share multiplied by the number of shares outstanding. It shows the size of the company in the eyes of investors and changes every time the share price changes. Capitalisation is not the same as the equity on the balance sheet (book value): one reflects market expectations, the other the value in the accounts. It is the value of the shares only: the company's debts are not included in it.