Here is a really good graphic from the Wall Street Journal. Moody’s Investors Service has been reviewing since February 2012 the credit ratings of more than 100 European banks for possible downgrade. The graphic below tracks Moody’s long-term debt ratings for the largest of these banks. Banks are sized by total assets. Shading indicates the bank’s credit rating — the deeper the red, the lower the rating. Click the link below to go to the website.