Biggest Market Cap Changes in 2009: Apple, Exxon Lead

In light of the huge moves this year, below we highlight the S&P 500 stocks that have had the largest changes in market cap. Year-to-date there are many stocks which have moved in excess of 50%, both up and down; several of those stocks appear below, along with some issues that might not be expected.

Apple (AAPL) has seen its market cap increase the most this year, although the stock is only up 35.90% versus some of the 50% and 60% gains shown below. On the opposite end of the spectrum, the company with the largest decrease in market cap has been Exxon Mobile (XOM), though it's only down 11.76% compared to Citi's (C) 57.53% decline and Bank of America's (BAC) 46.02% drop.