Opinion of Advocate General Pitruzzella delivered on 18 June 2019.#Crédit Mutuel Arkéa v European Central Bank.#Appeal – Economic and monetary policy – Article 127(6) TFEU – Regulation (EU) No 1024/2013 – Article 4(1)(g) – Prudential supervision of credit institutions on a consolidated basis – Regulation (EU) No 468/2014 – Article 2(21)(c) – Regulation (EU) No 575/2013 – Article 10 – Supervised group – Institutions permanently affiliated to a central body.#Joined Cases C-152/18 P and C-153/18 P.