Bank of America story updated with Wednesday's price action in the 13th paragraph..NEW YORK ( TheStreet) - Bank of America may have had a dismal 2011, but you haven't seen nothing yet. The thinking on Bank of America has long been that valuations are so low, the stock can't get any lower--and then lower it goes. The problem, by and large, has been mortgage risk. Bank of America can't ever seem to get a handle on how much exposure it has. The number just keeps growing and growing.