"After the financial crisis of 2007-2008, analysts continue to question the security of banking sectors in nations in Europe, Latin America, Asia, and Africa. Why do such crises recur? What is it about the accumulation of bank debt that potentially jeopardizes national and global banking...

We investigate the relationship between bank complexity and bank risk-taking using German banking data over the period 2005-2017. We find that more complex banking organizations tend to take on more risk, but that this complexity-risk nexus decreases over time. We study how regulatory...