The last decade has seen a tremendous transformation in the global financial sector. Globalization, innovations in communications technology and de-regulation have led to significant growth of financial institutions around the world. These trends had positive economic benefits in the form of increased productivity, increased capital flows, lower borrowing costs, and better price discovery and risk diversification. But the same trends have also lead to greater linkages across financial institutions around the world as well as an increase in exposure of these institutions to common sources of risk. The recent financial crisis has demonstrated that financial institutions around the world are highly inter-connected and that vulnerabilities in one market can easily spread to other markets outside of national boundaries.
In a recent paper my co-author Deniz Anginer and I examine whether the global trends described above have led to an increase in co-dependence in default risk of commercial banks around the world. The growing expansion of financial institutions beyond national boundaries over the past decade has resulted in these institutions competing in increasingly similar markets, exposing them to common sources of market and credit risk. During the same period, rapid development of new financial instruments has created new channels of inter-dependency across these institutions. Both increased interconnections and common exposure to risk makes the banking sector more vulnerable to economic, liquidity and information shocks.