(6)Market participants have been interpreting the pre-trade transparency requirements for hybrid trading systems differently, which has resulted in inconsistent pre-trade transparency disclosed by operators of such systems. Hybrid systems are systems which combine two or more trading systems. To ensure that those operators disclose appropriate pre-trade transparency information in a consistent manner across the Union, pre-trade transparency requirements should be introduced for hybrid trading systems which ensure that pre-trade transparency requirements are aligned with those of the individual systems of which the hybrid system consists.