1. Member States shall require that investment firms authorised to execute orders on behalf of clients implement procedures and arrangements which provide for the prompt, fair and expeditious execution of client orders, relative to other client orders or the trading interests of the investment firm.
These procedures or arrangements shall allow for the execution of otherwise comparable client orders in accordance with the time of their reception by the investment firm.
2. Member States shall require that, in the case of a client limit order in respect of shares admitted to trading on a regulated market which are not immediately executed under prevailing market conditions, investment firms are, unless the client expressly instructs otherwise, to take measures to facilitate the earliest possible execution of that order by making public immediately that client limit order in a manner which is easily accessible to other market participants. Member States may decide that investment firm