Credit unions vs. commercial banks, who takes more risk?

A unique feature of the financial services industry is that both shareholder-owned banks and member-owned credit unions coexist and compete against each other. In this study, we investigate two research questions. First, we compare risk-taking by banks and credit unions, with an additional consideration as to how regulatory oversight (state or federal) relates to such risk-taking. Second, we examine how competition affects the difference in risk-taking between these two types of financial institutions. To answer both questions, we rely on a matched sample (by loan type, size, and county) of commercial banks and credit unions, covering the period between 2010 and 2017. We use three empirical proxies for risk-taking, the Z-score, measuring an institution’s insolvency risk, as well as the ratios of non-performing loans to total loans and loan charge-offs to total loans, measuring the credit risk. Our results suggest that banks tend to engage in more risk-taking than credit unions; however, state regulatory oversight reduces the risk-taking gap, especially in terms of the Z-score. We further find that competition induces different risk-taking behaviors in banks and credit unions. Our results are robust to several alternative specifications.