(6)As the MPOR is aimed at capturing changes in the market value of a netting set of transactions during the time from the most recent exchange of collateral covering that netting set with a defaulting counterparty until the transactions are closed out and the resulting market risk is re-hedged, and as markets can be closed on certain calendar days, MPORs should be expressed in business days. This will ensure that the own funds requirement for those transactions fully reflects the risks that the institution is exposed to during the MPOR. It is therefore appropriate to provide that the MPOR floor to be used for the purposes of Article 304(3) Regulation (EU) No 575/2013 is equal to five business days, i.e. longer than the minimum of five days provided for in that Article. The MPOR floor would thus also be aligned with the provisions set out in Section 6 of Chapter 6 of Title II of Part Three of Regulation (EU) No 575/2013 that cover the requirements for the use of the IMM.