I would avoid the stock completely. They have just raised 1.5 Billion capital with convertible bonds. The credit default swaps are pricing a 23% chance of default in the next five years on their bonds but that is more to do with current market conditions. In situations like these, the common shareholders will face massive dilution. We have seen this before with Citigroup, Barclays, DB, and many other banks. The bond holders come out whole and the common shareholders lose out and yet people are attracted to equities due to their casino like volatility. Ask GE shareholders how they have done over the last 22 year versus the bond holders. There are stocks that are in far worse shape than CS like Boeing that are not even making headlines.
I don't have a position in CS bonds or stock. The issue I have with CS is the reality that all the mobsters, despots, criminal organizations of the world do business with them. They are the safe haven bank for criminals and dictators. I seriously doubt they will default and cause harm to that segment of their lucrative customer base.