(42)In order to ensure appropriate liquidity management, MMFs should establish sound policies and procedures to get to know their investors. The policies that the manager of an MMF puts in place should help in understanding the MMF's investor base, to the extent that large redemptions could be anticipated. So that an MMF does not face sudden massive redemptions, particular attention should be paid to large investors representing a substantial portion of the MMF's assets, such as with one investor representing more than the proportion of daily maturing assets. The manager of an MMF should whenever possible look at the identity of its investors, even if they are represented by nominee accounts, portals or any other indirect buyer.