Und viele Beobachter von inner- und außerhalb des Finanzsektors stellen die Modelle in Frage, anhand derer Rating-Agenturen, Investmentfirmen und andere die Risiken solcher Wertpapiere beurteilen.
And many observers within and outside the financial sector have begun to question the models upon which credit-rating agencies, investment firms, and others rely to price the risks tied to such securities.