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A Dynamic Credit Ratings Model, David E. Allen, Robert Powell, Abhay Singh
A Dynamic Credit Ratings Model, David E. Allen, Robert Powell, Abhay Singh
Research outputs 2013
The Global Financial Crisis (GFC) provided overwhelming evidence of the problems caused by inadequate credit ratings. Losses and problem loans experienced by banks over this period were staggering. Yet many of the securitized sub-prime parcels which were widely seen as an underlying cause of the GFC, as well as corporate obligors who experienced severe difficulties during the GFC, retained extremely strong external credit ratings. They may have had low perceived risk at the time of rating, but as circumstances changed, the ratings stayed static and became far removed from the underlying risk. A key problem is that the external credit …