CDOs typically experience three distinct life stages: ramp-up, reinvestment, and amortization/maturity. Ramp-up defines the time between the premarketing phase of an issue and the first cash flow distribution. For cash transactions, the ramp-up phase usually lasts one to nine months; for synthetic transactions, shorter ramp-ups are common. During the reinvestment period, the CDO manager adjusts the collateral portfolio by buying or selling securities, subject to a set of prescribed constraints. The reinvestment period can be as short as three years (for some middle-market CLOs) and as long as seven years.
Equity investors have the right to call the transaction following the noncall period subject to a 2/3 majority vote. This option is most likely exercised when funding costs have fallen and the collateral is trading at or above par. In many cases, equity investors can roll their investment into a new issue and save on underwriting fees. We have estimated this optional redemption clause was worth approximately 61 basis points over the period September 2003 through September 2006. Alternatively, if funding costs rise, this option falls out of the money and has little value.
During the final life stage, the amoritization/maturity stage, a CDO distributes the principal payments from the collateral to the notes, amortizing the latter according to a prescribed schedule. Nearly all older vintage transactions had five-year reinvestment and three-year noncall periods; recent vintage issues typically have longer noncall and reinvestment periods. The final life stage of a CDO can be shortened via a cleanup call (exercised when the collateral’s outstanding balance drops below 10% of its original par value).