For the purposes of this Chapter and App4, "securitisation" includes Traditional Securitisation, Synthetic Securitisation and Re-securitisation, as defined below:
(a) A Traditional Securitisation is a structure where the cash flow from an underlying pool of Exposures is used to service at least two different stratified risk positions or tranches reflecting different degrees of Credit Risk. Payments to the investors depend upon the performance of the specified underlying Exposures, as opposed to being derived from an obligation of the entity originating those Exposures. A Traditional Securitisation will generally assume the movement of assets off balance sheet.
(b) A Synthetic Securitisation is a structure with at least two different stratified risk positions or tranches that reflect different degrees of Credit Risk where Credit Risk of an underlying pool of Exposures is transferred, in whole or in part, through the use of funded (e.g. CLNs) or unfunded (e.g. credit default swaps) Credit Derivatives or guarantees that serve to hedge the Credit Risk of the portfolio. Accordingly, the investors' potential risk is dependent upon the performance of the underlying pool. A Synthetic Securitisation may or may not involve the removal of assets off balance sheet.
(c) A Re-securitisation Exposure is a securitisation Exposure in which the associated underlying pool of Exposures is tranched and at least one of the underlying Exposures is a securitisation Exposure. In addition, an Exposure to one or more Re-securitisation Exposures is a Re-securitisation Exposure.