Apple’s market cap is not gaining on Exxon Mobil’s

June 20, 2011, 11:51 AM UTC

But then, neither is Microsoft gaining on Apple

Market capitalizations. Source: Wolfram Alpha

As measured by market capitalization (i.e., stock price times number of shares) Apple (AAPL) overtook Microsoft (MSFT) in May 2010 to become the world’s most valuable tech company.

Apple still trails Exxon Mobil (XOM), the No. 1 publicly traded company, by more than $90 billion.