The IRA Analyst Sun 2009-09-13 12:14 EDT

House Testimony: The Trouble With Models Starts With Subjectivity

...we have now many examples where a model or the pretense of a model was used as a vehicle for creating risk and hiding it. More important, however, is the role of financial models for creating opportunities for deliberate acts of securities fraud..the widespread use of [VaR] statistical models for risk management suggest that financial institutions are subject to occasional "Black Swans" in the form of risk events that cannot be anticipated...We don't actually believe there is such a thing as a "Black Swan."...leaders in finance and politics simply made the mistake of, again, believing in what were in fact flawed models...Or worse, our leaders in Washington and on Wall Street decided to be short sighted and not care about the inevitable debacle...We need to simply ensure that all of the financial instruments in our marketplace have an objective basis, including a visible, cash basis market that is visible to all market participants. If investors cannot price a security without reference to subjective models, then the security should be banned from the US markets as a matter of law and regulation. To do otherwise is to adopt deception as the public policy goal of the US when it comes to financial markets regulation.

House testimony; IRA Analyst; models starting; subject; Troubles.