저축은행 시장집중도와 위험추구－구조조정 전․후 비교분석을 중심으로－

The purpose of this study is to analyze the relationship between savings banks’ market concentration and risk taking. In particular, the difference from the previous studies is whether the risk－taking behavior of savings banks is different before and after restructuring. And we estimated whether the change in risk taking behavior is the result of market concentration. 77 savings banks from 2009 to 2016 were used as 1065 samples for the study, and the results were derived from panel regression analysis. The results of the study are as follows. First, we analyzed the relationship between concentration of savings bank market and risk taking behavior, and it is estimated that the risk－weighted assets ratio increases with increasing market concentration. Second, there is a difference in risk－taking behavior before and after restructuring of savings banks. Third, it is estimated that the difference of risk taking behavior after restructuring is due to the interaction of market concentration variables. As a result of estimating the ratio of risk－weighted assets as a risk－seeking index, the results showed that the savings banks had a strong risk－seeking tendency after restructuring. These results show that after the restructuring, large－scale savings banks have become more concentrated in the market, and banks with high market share have formed a more aggressive loan portfolio by taking advantage of market dominance. This study is meaningful in analyzing the effect of the increase in market concentration on the risk taking due to the structural change after the restructuring of the savings bank. The results of this analysis will be important for building a sustainable business model.