Answer

Company "Market Cap" or "Stock Market Capitalization" is the value of all of the company's issued and outstanding shares multiplied by the stock price on a given day.  

Stock Market Capitalization = Current Shares Outstanding x Current Stock Market Price.  

Go to the Business Library's Company & Financial Information section for links to useful resources including links to the following suggested resources:

Standard & Poor's NetAdvantage: Provides Market Capitalization under the company summary.

Mergent Online: Provides Market Cap data at the top of a company profile.

Hoovers: Provides Market Value as part of the company overview and it is found under the Financials tab.

A country's market capitalization is the share price times the number of shares outstanding for all of the listed domestic companies. 

Go to the Business Library's Economic and Statistical Information section and search in the databases:

• CEIC: Provides time series data; search market capitalization then narrow to specific countries.
• Finaeon
  • Type Market Capitalization in the Quick Search box.

Use Bloomberg (see Bloomberg Guide).

• Type ALLX WCAU into the command line and press <GO> for a listing of market cap by country.

For lesser known stock exchange market cap data, take a look at the World Bank's Market capitalization of listed companies.