Apple Surpasses Microsoft in Market Cap

Apple surpassed Microsoft's market cap during Wednesday's trading session, becoming the second-largest company by market value in the S&P 500.

Apple's market cap now stands at $222 billion, about $3 billion higher than the value of Microsoft. In 2010, Apple's shares are up about 16%, compared to a drop of 18% for Microsoft's shares.

Currently, the largest company in the S&P 500 is Exxon Mobil with a market cap value of nearly $279 billion.

Here is a look at the companies with the largest market cap value in the S&P 500: