1. Member States shall not permit management companies to carry out a UCITS order in aggregate with an order of another UCITS or another client or with an order on their own account, unless the following conditions are met:

(a) it must be unlikely that the aggregation of orders will work overall to the disadvantage of any UCITS or clients whose order is to be aggregated;

(b) an order allocation policy must be established and implemented, providing in sufficiently precise terms for the fair allocation of aggregated orders, including how the volume and price of orders determines allocations and the treatment of partial executions.

2. Member States shall ensure that where a management company aggregates a UCITS order with one or more orders of other UCITS or clients and the aggregated order is partially executed, it allocates the related trades in accordance with its order allocation policy.

3. Member States shall ensure that management companies which have aggregated transactions for own account with one or more UCITS or other clients' orders do not allocate the related trades in a way that is detrimental to the UCITS or another client.