(27)Even though this Regulation does not cover national social security schemes covered by Regulations (EC) No 883/2004 and (EC) No 987/2009, in view of the fact that Member States increasingly open up parts of the management of compulsory pension schemes within their social security systems to financial market participants or other entities under private law, and as such schemes are exposed to sustainability risks and might consider adverse sustainability impacts, promote environmental or social characteristics or pursue sustainable investment, Member States should have the option to apply this Regulation with regard to such schemes in order to mitigate information asymmetries.