Recital 27

(27)The impact on financial stability of liquidating the collateral posted by non-systemically important counterparties is limited. Further, concentration limits on initial margin might be burdensome for counterparties with small OTC derivative portfolios as they might have only a limited range of eligible collateral available to post. Therefore, even though collateral diversification is a valid risk mitigant, non-systemically important counterparties should not be required to diversify collateral. On the other hand, systemically important financial institutions and other counterparties with large OTC derivative portfolios trading with each other should apply the concentration limits at least to initial margin including with respect to eligible collateral comprising Member States' sovereign debt securities. Those counterparties are sophisticated enough to either transform collateral or to access multiple markets and issuers to sufficiently diversify the collateral posted. Article 131 of Directive 2013/36/EU of the European Parliament and of the Council ⁴ provides for the identification of institutions as systemically important under Union law. However, given the broad scope of Regulation (EU) No 648/2012, a quantitative threshold should be introduced so that the requirements for concentration limits apply also to counterparties that might not fall under those existing classifications of systemically important institutions but which should nonetheless be subject to concentration limits because of the size of their OTC derivative portfolios.