(15)The requirements in the Policy Manual on eligible collateral and on how that collateral is held and segregated should be considered equivalent to those set out in Article 4 of Delegated Regulation (EU) 2016/2251. The Policy Manual contains an equivalent list of eligible collateral, and AIs are to have appropriate controls in place to ensure that the collateral collected does not exhibit significant wrong-way risk or significant concentration risk. Concentration should be assessed in terms of an individual issuer, issuer type and asset type. Margin rules for OTC derivative contracts not cleared by a CCP contained in the Policy Manual should therefore be considered equivalent to those provided for under Article 11(3) of Regulation (EU) No 648/2012.