Firms with over $100B in net tangible book assets are seldom delisted.
REAL, unquestioned assets that is such as $33B for MER, $18B for its interest in China Development Bank, the $8.6B in cash they are getting from sale of their Canadian credit card operation and then of course all the rest of their enormous world-wide banking operations net of the bad Countrywide loans. Most analysts think that about $25B is the extent of further damanages that BAC hasn't provided for.
The company is also profitable with expected earnings nest year of $14B and the Free Cash Flow to match.