Planned Amortisation Class CMO [PAC CMO]

PrepNuggets

A CMO with a PAC tranche and Support tranche.

PAC tranches have lower prepayment risk. If the PSA falls within the initial collar, the estimated average life will be achieved.

Support tranches have higher prepayment risk. If the PSA increases, the average life is lower than estimate. If the PSA decreases, the average life is higher than estimate.

Compare: Sequential Pay CMO