The impact of monetary policy announcements on the stock price of large European banks during the financial crisis

Since 2007, the European Central Bank responded decisively to the challenges posed by the global financial crisis, reducing key policy interest rates to unprecedented low levels and intervening with non-standard policy measures (i.e., monetary easing and liquidity provision). This paper aims to assess the impact of ECB monetary policy announcements on the stock price of large European banks. As a first step, an event study is conducted in order to measure cumulated abnormal returns (CARs) around the announcements over June 2007-June 2013; the second step is a regression analysis aimed at identifying the determinants of CARs. Results show that banks were more sensitive to non-conventional measures than to interest rate decisions, and that the same type of intervention may have a different impact depending on the stage of the crisis. In addition, banks with weaker balance sheets and operating with high-risk were more sensitive to monetary policy interventions.