This paper investigates the impact of the SSM's launch on the market power of banks in the large euro area economies. We employ the Lerner index and the Boone estimator, non-structural measures that capture different aspects of competition. Using the results of the Lerner index, we find evidence...

This paper is the first that applies a new measure of competition, the Boone indicator, to the banking industry. This approach is able to measure competition of bank market segments, such as the loan market, whereas many well-known measures of competition can consider the entire banking market...