Over the past two weeks, shares of some of the nation's largest banks have taken a beating. JPMorgan Chase's (NYSE:JPM) are down 5.6% and Citigroup's (NYSE:C) by 6.5%. The one exception is Bank of America (NYSE:BAC), which is roughly flat over the same time period. In the video below, Motley Fool contributor John Maxfield discusses why Bank of America has held up so much better than its peers.