(5)A second and a third category should comprise financial counterparties not included in the first category, grouped according to their levels of legal and operational capacity regarding OTC derivatives. The level of activity in OTC derivatives should serve as a basis to differentiate the degree of legal and operational capacity of financial counterparties, and a quantitative threshold should therefore be defined for division between the second and third categories on the basis of the aggregate month-end average notional amount of non-centrally cleared derivatives. That threshold should be set out at an appropriate level to differentiate smaller market participants, while still capturing a significant level of risk under the second category. The threshold should also be aligned with the threshold agreed at international level related to margin requirements for non-centrally cleared derivatives in order to enhance regulatory convergence and limit the compliance costs for counterparties. As in those international standards, whereas the threshold applies generally at group level given the potential shared risks within the group, for investment funds the threshold should be applied separately to each fund since the liabilities of a fund are not usually affected by the liabilities of other funds or their investment manager. Thus, the threshold should be applied separately to each fund as long as, in the event of fund insolvency or bankruptcy, each investment fund constitutes a completely segregated and ring-fenced pool of assets that is not collateralised, guaranteed or supported by other investment funds or the investment manager itself.