In Wieland's opinion, there is no reason for a monetary policy in crisis mode. At the end of 2018, the ECB's balance sheet was 2,2 times higher than in 2014. This was mainly due to the bond purchase program, especially the Public Sector Purchase Programme (PSPP). The size of a central bank's balance sheet is closely intertwined with its monetary policy.
Frankfurter Allgemeine Woche: "Billionen verpufft"