Mortgages that were somewhat likely to be repaid.
Like investors should only buy stocks that are going to go up?
You know not all banks originated sub prime liar loans? Not all losses were from sub prime liar loans?
If they weren't heavily involved with sub prime loans, they are more likely to still be in business. All the big financial institutions that got into trouble were heavily involved with sub prime. Citi had something like 55b in sub prime write downs and losses..