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Report
Growth uncertainty and risksharing
We propose a new methodology to evaluate the gains from global risksharing that is closely connected to the empirical growth literature. We obtain estimates of residual risk (growth uncertainty) at various horizons from regressions of country-specific deviations from world growth on a wide set of variables in the information set. Since this residual risk can be entirely hedged, we use it to obtain a measure of welfare gain that can be achieved by a representative country. We find that nations can reap very large benefits from engaging in such risksharing arrangements. Using post-war data, the ...
Asset Prices, Leverage and Portfolio Rebalancing Drive Global Capital Flows Cycle
The amount of leverage—borrowed funds relative to the value of underlying assets—increases for risky holdings during downturns, motivating their ultimate sale to achieve a more secure financial position. The opposite occurs during upswings, as risky assets gain favor.
Working Paper
A Theory of the Global Financial Cycle
We develop a theory to account for changes in prices of risky and safe assets and gross and net capital flows over the global financial cycle (GFC). The multi-country model features global risk-aversion shocks and heterogeneity of investors both within and across countries. Within-country heterogeneity is needed to account for the drop in gross capital flows during a negative GFC shock (higher global risk-aversion). Cross-country heterogeneity is needed to account for the differential vulnerability of countries to a negative GFC shock. The key vulnerability is associated with leverage. In ...
Working Paper
A theory of the currency denomination of international trade
Nominal rigidities due to menu costs have become a standard element in closed economy macroeconomic modeling. The "New Open Economy Macroeconomics" literature has investigated the implications of nominal rigidities in an open economy context and found that the currency in which prices are set has significant macroeconomic and policy implications. In this paper we solve for the optimal invoicing choice by integrating this microeconomic decision at the firm level into a general equilibrium open economy model. Strategic interactions between firms play a critical role in the analysis. We find ...
Report
Does exchange rate stability increase trade and capital flows?
On the eve of a major change in the world monetary system, the adoption of a single currency in Europe, our theoretical understanding of the implications of the exchange rate regime for trade and capital flows is still limited. We argue that two key model ingredients are essential to address this question: a general equilibrium setup and deviations from purchasing power parity. By developing a simple benchmark monetary model that contains these two ingredients, we find the following main results. First, the level of trade is not necessarily higher under a fixed exchange rate regime. Second, ...
Journal Article
Asia crisis postmortem: where did the money go and did the United States benefit?
The Asia crisis was originally expected to affect the U.S. economy adversely, mainly through reduced exports to, and increased imports from, the crisis countries. However, U.S. GDP growth in 1998, at 4.3 percent, was surprisingly strong. This article examines the effect of the crisis on the U.S. economy, using a quantitative approach that focuses on capital outflows from Asia. It finds that banks were the primary mechanism by which the funds left Asia, and that these funds did not flow directly to the United States. Rather, they went first to offshore banking centers and then to European ...
Working Paper
Incomplete information processing: a solution to the forward discount puzzle
The uncovered interest rate parity equation is the cornerstone of most models in international macro. However, this equation does not hold empirically since the forward discount, or interest rate differential, is negatively related to the subsequent change in the exchange rate. This forward discount puzzle implies that excess returns on foreign currency investments are predictable. In this paper we investigate to what extent incomplete information processing can explain this puzzle. We consider two types of incompleteness: infrequent and partial information processing. We calibrate a ...
Working Paper
A Theory of Capital Flow Retrenchment
The empirical literature shows that gross capital inflows and outflows both decline following a negative global shock. However, to generate a positive co-movement between gross inflows and outflows, the theoretical literature relies on asymmetric shocks across countries. We present a model where there is heterogeneity across investors within countries, but there are no asymmetries across countries. We show that a negative global shock (rise in global risk-aversion) generates an identical drop in gross inflows and outflows. The within-country heterogeneity relates to the willingness of ...
Working Paper
A Theory of Net Capital Flows over the Global Financial Cycle
We develop a theory to account for changes in net capital flows of safe and risky assets over the global financial cycle. We show empirically that countries that have a net debt of safe assets experience a rise in net outflows of safe assets (reduced accumulation of safe debt) during a downturn in the global financial cycle. This is accomplished through a rise in total net outflows and a drop in net outflows of risky assets. We develop a multi-country portfolio choice model that can account for these facts. The theory relies on cross-country heterogeneity in the share of an investor's ...