Managing The Sovereign Bank Nexus

This paper reviews empirical and theoretical work on the links between banks and their governments (the bank-sovereign nexus). How significant is this nexus? What do we know about it? To what extent is it a source of concern? What is the role of policy intervention? The paper concludes with a review of recent policy proposals.

This paper identifies the various channels that give rise to a "sovereign-bank nexus" whereby the financial health of banks and sovereigns is intertwined. We find that banks and sovereigns are linked by three interacting channels: banks hold large amounts of sovereign debt; banks are protected by government guarantees; and the health of banks and governments affect and is affected by economic activity. Evidence suggests that all three channels are relevant. The paper concludes with a discussion of the policy implications of these findings.

This paper explores how banking sector developments and characteristics influence the propagation of risks from the banking sector to sovereign debt, including how they affect the extent of fiscal costs of banking crises when those occur. It then proposes practices and policies for the fiscal authorities to help manage the risks and enhance crisis preparedness.

We analyze holdings of public bonds by over 20,000 banks in 191 countries, and the role of these bonds in 20 sovereign defaults over 1998-2012. Banks hold many public bonds (on average 9% of their assets), particularly in less financially-developed countries. During sovereign defaults, banks increase their exposure to public bonds, especially large banks and when expected bond returns are high. At the bank level, bondholdings correlate negatively with subsequent lending during sovereign defaults. This correlation is mostly due to bonds acquired in pre-default years. These findings shed light on alternative theories of the sovereign default-banking crisis nexus.

The present way of thinking about financial intermediation does not fully incorporate the rise of asset managers as a major source of funding for banks through the shadow banking system. Asset managers are dominant sources of demand for non-M2 types of money and serve as source collateral ?mines' for the shadow banking system. Banks receive funding through the re-use of pledged collateral ?mined' from asset managers. Accounting for this, the size of the shadow banking system in the U.S. may be up to $25 trillion at year-end 2007 and $18 trillion at year-end 2010, higher than earlier estimates. In terms of policy, regulators will need to consider the re-use of pledged collateral when defining bank leverage ratios. Also, given asset managers' demand for non-M2 types of money, monitoring the shadow banking system will warrant closer attention well beyond the regulatory perimeter.

The global economy has experienced four waves of rapid debt accumulation over the past 50 years. The first three debt waves ended with financial crises in many emerging market and developing economies. During the current wave, which started in 2010, the increase in debt in these economies has already been larger, faster, and broader-based than in the previous three waves. Current low interest rates mitigate some of the risks associated with high debt. However, emerging market and developing economies are also confronted by weak growth prospects, mounting vulnerabilities, and elevated global risks. A menu of policy options is available to reduce the likelihood that the current debt wave will end in crisis and, if crises do take place, will alleviate their impact.

This book discusses the risks and opportunities that arise in Emerging Asia given the context of a new environment in global liquidity and capital flows. It elaborates on the need to ensure financial and overall economic stability in the region through improved financial regulation and other policy measures to minimize the emergent risks. "Managing Elevated Risk: Global Liquidity, Capital Flows, and Macroprudential Policy—An Asian Perspective" also explores the range of policy options that may be deployed to address the impact of global liquidity on domestic financial and socio-economic conditions including income inequality. The book is primarily aimed at policy makers, financial market regulators and supervisory agencies to help them improve national regulatory systems and to promote harmonization of national regulations and practices in line with global standards. Scholars and researchers will also gain important information and knowledge about the overall impacts of changing global liquidity from the book.