List of questions we are often asked about Microsoft as a company...
How big is Microsoft?

Market Capitalization is the sum derived from the current stock price per share times the total number of shares outstanding. Market Capitalization is an indication of the value of the company at a specific point in time, based on the current stock market. Microsoft has a current Market Cap. of 275.32 Billion. According to Yahoo Finance, that means its currently ranked third in with Exxon in second place and GE in first place.

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http://blogs.msdn.com/jobsblog/articles/489066.aspx

Suresh Behera