Below we provide 5-year CDS (credit default swap) price charts for the six largest US banks and brokers going back to the start of 2010. As shown, Morgan Stanley (NYSE:MS) has the highest default risk of the bunch at 348 basis points. Bank of America (NYSE:BAC) has the second highest default risk, followed by Goldman Sachs (NYSE:GS). JPMorgan (NYSE:JPM) has the second to lowest default risk at 120 basis points, while Wells Fargo (NYSE:WFC) has the lowest at 99 basis points. It looks like there's a reason Wells Fargo is now the biggest bank in the US.