Understanding the Risk of Synthetic CDOs (By Federal Reserve Economist in 2004, Where Was Greenspan?)

I found a research report that was written by Federal Reserve economist Michael S. Gibson in 2004 titled "Understanding the Risk of Synthetic CDOs". Did Alan Greenspan read this?

img: FCIC/Wikipedia
"The paper highlights key issues for investors in synthetic CDO tranches as well as for dealers who structure synthetic CDOs for clients. Investors in mezzanine CDO tranches are taking on leveraged exposures to the underlying credit risk of the reference portfolio. A tranche's credit rating does not convey all aspects of the tranche's risk. If investors disclose the notional amounts of their portfolio, broken down by credit rating, the leveraged nature of a mezzanine tranche's risk exposure would not be obvious.

The paper also touches on some of the risks to dealers who structure and make markets in synthetic CDO tranches for clients. A complete set of synthetic CDO tranches may not be fully hedged by selling single-name credit default swap protection on the CDO's reference portfolio if the CDO tranches are structured as swaps whose payouts do not depend on the flow of income from the reference portfolio. Dealers in CDO tranches, including those who structure single-tranche CDOs, are exposed to model risk and, because of the dynamic hedging required, liquidity risk that are not present in traditional cash CDOs."

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