(4)Article 153 of Regulation (EU) No 575/2013 lays down the formula for the calculation of the risk weighted exposures amounts for exposures to corporates, institutions, central governments and central banks under the internal-ratings based (IRB) approach and details the parameters to be used for the calculation, including the coefficient of correlation. Article 153(2) of Regulation (EU) No 575/2013 sets the coefficient of correlation applicable to large financial sector entities. According to Article 142(1)(4)(b) of that Regulation, in order to qualify for the definition of ‘large financial sector entity’, the financial sector entity or one of its subsidiaries must be subject to the laws of a third country applying prudential supervisory requirements at least equivalent to those applied in the Union.