Do you have anything to back that up? We have people monitoring the Penson problem pretty closely, and I don't recall seeing that Penson was the "first" to do this.
In fact, if you read up on it, it's because the owners held illiquid bonds, the rest of the world found out about it, and the Penson's stock crashed. Then the director resigned.
Again, it's not a DTCC problem, it's a Penson problem.
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