Noun
CDO squared (plural CDO squareds)
Alternative form of CDO-squared
CDO-squared (plural CDO-squareds)
(finance) A type of CDO (collateralized debt obligation) that invests in other CDOs.
CDO-squared
As CDOs developed, some sponsors repackaged tranches into yet another iteration called " CDO-Squared " or the "CDOs of CDOs". Source: Internet