thestreet.com — NEW YORK (TheStreet) -- Bank of America(BAC) has been among the top -performing bank stocks in 2012, with shares up 46% year to date. There is cause to worry of the rally is overdone, considering that the market seems to be bidding up last year's underperformers such as Citigroup(C), up 28% and Regions Financial(RF), up 36%, while stocks of healthy banks such as JPMorgan Chase(JPM) have trailed behind with a return of 19%.