Quote from trendlover:
Asiaprop, why the investment banks (reject) the model to rate the CDO that show higher default risk? Gary Witt make this model when he work for Moodys. This model can not give so many AAA or Aaa ratings to these pools of the subprime.
Why do the (investment banks) (same people who buy the bundles of subprime morgages from originators they fund) reject Gary Witt model, and tell the rating agency to use gaussian copula function model?
Quote from Anaconda:
I don't care what the going practice is for other instruments. I am talking about the situation at hand. Do I know of actual excels being emailed from IB to ratings agency? No and I would not expect that. They are not dumb.
What I do know is based on the conversations I had is that the ratings agencies were "very cooperative" with the IBs. There was a lot of collaboration between the two and any reasonable objections by the "grunts" at the ratings agencies were squashed. The intended goal was to make these products have a certain high grade credit ratings and the work to get this done was not on the actual product side but in the modeling & assumptions.
Since you claim to have done modeling of these CDOs, you should know that the assumptions taken to even try to pretend that these are high grade credit instruments are delusions.
----------------------------------------------------------------------------------------Quote from nutmeg:
Gary Witt model, and tell the rating agency to use gaussian copula function model?
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uh oh, off to google i go.![]()
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Quote from asiaprop:
dont change the meaning, I never talked about other instruments, lets keep with the topic of the modeling of CDO structures. Could you now answer my question in a straight forward manner? Or are you unable to?