country portfolios under global imbalances abstract this paper studies the composition of country portfolios under global imbalances when countries are identical the optimal portfolio is fully diversified which reflects the cross country symmetric self hedging lucas 1982 assuming a structural country asymmetry in patience we construct a model of portfolio choices that features persistent non zero net foreign assets nfa because the latter opens a gap between gnp and gdp we found that an asymmetric hedging of net portfolio returns emerges in addition to the otherwise only lucas symmetric self hedging in shaping the gross country portfolios which implies a short long position of the local asset in the debtor creditor country the resulting portfolio is home biased we calibrate our model to the u s and china data over 1999 2017 and show that it matches the portfolio data for countries with unbalanced net external positions well

a method for solving general equilibrium models with incomplete markets and many financial assets abstract this paper presents a numerical method for solving stochastic general equilibrium models with dynamic portfolio choice the method can be applied to models with heterogeneous agents time varying investment opportunity sets and incomplete asset markets we illustrate the method using a two country model with production we check the accuracy of our method by comparing the numerical solution to a complete markets version of the model against its known analytic properties we then apply the method to an incomplete markets version where no analytic solution is available in all versions the standard accuracy tests confirm the effectiveness of our method

on optimal wage indexation when shocks are real abstract this note studies the optimal degree of wage indexation in the presence of real shocks contrary to what is indicated in the literature it is demonstrated that the optimal degree of indexation is not limited to 0 1 but may take any value in

calculating and using second order accurate solutions of discrete time dynamic equilibrium models we describe an algorithm for calculating second order approximations to the solutions to nonlinear stochastic rational expectations models the paper also explains methods for using such an approximate solution to generate forecasts simulated time paths for the model and evaluations of expected welfare differences across different versions of a model the paper gives conditions for local validity of the approximation that allow for disturbance distributions with unbounded support and allow for non stationarity of the solution process

international financial integration and crisis contagion international financial integration helps to diversify risk but also may spread crises across countries we provide a quantitative analysis of this trade off in a two country general equilibrium model with collateral constrained borrowing using a global solution method borrowing constraints bind occasionally depending upon the state of the economy and levels of inherited debt we examine different degrees of international financial integration moving from financial autarky to bond and equity market integration financial integration leads to a significant increase in global leverage substantially escalates the probability of crises for any one country and dramatically increases the degree of contagion across countries outside of crises the impact of financial integration on macroeconomic aggregates is relatively small but the impact of a crisis with integrated international financial markets is much less severe than that under financial market autarky thus a trade off emerges between the probability of crises and the severity of crises using a large cross country database of financial crises in developing and developed economies over a forty year period we find evidence in support of the model

when is fdi a capital flow in this paper we analyze the conditions under which a foreign direct investment fdi involves a net capital flow across countries for this purpose we investigate how multinational firms finance their foreign affiliates globally or locally we develop a contract theoretical model in which the financing structure is used to govern the incentives of managers we find that the investment tends to be financed locally if managerial incentive problems are large thus microeconomic governance problems may have macroeconomic implications for the net capital flow to host countries our results are consistent with survey data on german and austrian investment flows of firms to eastern europe

capital controls capital flow contractions and macroeconomic vulnerability abstract in this paper i analyze whether restrictions to capital mobility reduce vulnerability to external shocks more specifically i ask if countries that restrict the free flow of international capital have a lower probability of experiencing a large contraction in net capital flows i use three new indexes on the degree of international financial integration and a large multi country data set for 1970 2004 to estimate a series of random effect probit equations i find that the marginal effect of higher capital mobility on the probability of a capital flow contraction is positive and statistically significant but very small having a flexible exchange rate greatly reduces the probability of experiencing a capital flow contraction the benefits of flexible rates increase as the degree of capital mobility increases a higher current account deficit increases the probability of a capital flow contraction while a higher ratio of fdi to gdp reduces that probability

external balances trade and financial conditions abstract i present a new model for the u s external position that accounts for the accumulation of international debt over the past 60 years the model is based on the present value restriction that links a country s external position to future trade flows and financial conditions in the absence of arbitrage opportunities and ponzi schemes it features the role played by the stochastic discount factor the trade and valuation adjustment channels and provides a decomposition of the u s external position into secular and cyclical components the model shows that shocks operating via the valuation channel are the dominant drivers of cyclical dynamics accounting for approximately 80 of the variance over the 60 year sample this channel works primarily via capital gains and losses on u s foreign assets and is closely tied to the international value of the u s dollar in contrast there is no evidence that valuation channel adjustments contribute to the secular dynamics but differences between the average returns on foreign assets and liabilities raise the steady state debt to gdp ratio from approximately 12 to 15 the long term deterioration in the u s position represents a move towards the steady state before the early 1990s and a move away from the steady state thereafter i quantify the expected improvement in future u s trade balances needed to justify this as a sustainable path and show that they are very different from its actual behavior during the last 60 years i also study the behavior of the u s position during the 2007 2008 financial crisis

closing large open economy models abstract a large class of international business cycle models admits multiple locally isolated deterministic steady states if the elasticity of substitution between traded goods is sufficiently low i explore the conditions under which such multiplicity occurs and characterize the dynamic properties in the neighborhood of each steady state models with standard incomplete markets portfolio costs a debt elastic interest rate or an overlapping generations framework allow for multiple steady states if the model features multiple steady states under financial autarchy if the excess demand for the foreign traded good is increasing in the good s own price in a given steady state the equilibrium dynamics around this steady state are unbounded otherwise the dynamics are bounded and unique by contrast with uzawa type preferences the steady state is always unique and the associated equilibrium dynamics are always bounded and unique the same results obtain under complete markets

a new perspective on the new rule of the current account abstract in an influential series of contributions kraay and ventura 2000 2003 offer a new rule for the current account in response to a temporary income shock the change in the current account is equal to the change in saving times the ratio of net foreign assets to wealth we analyze the impact of a temporary income shock on the current account in the context of a two country dynamic general equilibrium model of portfolio choice and show that the new rule does not hold we also show that the cross section evidence reported by kraay and ventura in favor of the new rule is a feature implied by the steady state of the model that is conceptually distinct from the new rule we argue that the new rule could only hold in a model with one way capital flows only inflows or outflows but not both a feature that is strongly counterfactual

optimal monetary policy exchange rate misalignments and incomplete financial markets abstract recent literature shows that when international financial trade is restricted to autarky or a single bond there are internal and external welfare trade offs that imply optimal monetary policy in principle deviates from inflation targeting in order to offset real exchange rate misalignments this paper develops a more realistic model of incomplete markets where there is international trade in multiple assets the analysis shows that the presence of multiple assets creates a potentially powerful interaction between monetary policy and household portfolio allocation this interaction is by definition not present when there is financial autarky or a single tradeable bond and this paper shows that the interaction with portfolio allocation can imply that optimal monetary policy generates a quantitatively much more significant stabilisation of the real exchange rate gap than implied by simpler models of financial market incompleteness

international business cycles and financial frictions abstract in this study i build a two country dsge model to investigate the impact of financial integration on business cycle co movements with financial frictions in this model the investor can borrow but faces a collateral constraint that is tied to the value of her capital and real estate holdings i show quantitatively that the degree of financial integration and real exchange rate adjustment are important for understanding business cycle synchronization under different types of shocks with the technology shock greater financial integration leads to lower cross country correlations while with the financial shock greater financial integration leads to stronger cross country correlations these findings are consistent with the empirical evidence from the literature

foreign currency debt risk premia and macroeconomic volatility abstract this paper studies the relationships between foreign currency debt macroeconomic volatility and risk premia in a model of a small open emerging market economy the external value of the local currency is counter cyclical so that foreign currency debt requires larger repayments than local currency debt in bad states of nature the level of foreign currency denominated debts therefore affects the volatility of aggregate demand and by extension of the exchange rate exchange rate volatility is in turn an important determinant of the risk premium on local currency debt finally this risk premium is a major factor in the choice of local versus foreign currency for emerging market borrowers the mutual endogeneity of foreign currency debt risk premia and macroeconomic volatility creates important feedback effects in the economy small increases in international risk aversion may entail large amplification effects on macroeconomic volatility since domestic borrowers substitute towards cheaper but riskier foreign currency debt finance

us shocks and global exchange rate configurations many academics and observers emphasize that a sharp us dollar depreciation is inevitable for returning the burgeoning us current account deficit to more sustainable levels how may such a us dollar adjustment occur and what may it imply for global exchange rate configurations the paper focuses on the role of us specific economic shocks in the adjustment process and finds that such us shocks have historically exerted a remarkably heterogeneous effect across currencies it shows that this heterogeneity is not only due to policy choices of inflexible exchange rate regimes or to monetary policy but to an important extent is explained by market forces in particular the degree of financial integration foremost in portfolio investment though not by trade this helps explain why it has been in particular the euro and its predecessor currencies as well as other european currencies that have contributed the bulk to the adjustment of the us dollar effective exchange rate over the past 25 years while other flexible currencies have been much less responsive to us shocks the results suggest that currency flexibility is a necessary but not a sufficient condition for achieving a more balanced contribution across currencies to an adjustment of global exchange rate configurations exchange rates are responsive to foreign shocks only to the extent that market mechanisms are in place that make this transmission work which requires in particular that countries have well developed financial markets and are financially integrated these findings have implications for an unwinding of global imbalances and for monetary policy choices and financial market policies in emerging market economies marcel fratzscher

financial integration and the wealth effect of exchange rate fluctuations abstract recent years have witnessed a large increase in international financial integration in the form of largely offsetting cross holdings across countries we assess how such financial leverage affects the international transmission of monetary shocks and find that it leads to sizable welfare differentials that far exceed the impact due to nominal rigidities we document the relevance of the exact nature of holdings with bond holdings associated with larger effects than equity holdings the impact of financial leverage on welfare is also sensitive to the extent of exchange rate pass through and the substitutability between goods produced in different countries

asset pledgeability and international transmission of financial shocks abstract this paper studies the international transmission of pledgeability shocks as the recent crisis involved a negative shock to the pledgeability of assets the paper develops a two country portfolio model with leveraged investors that incorporates this type of shock and a solution approach for the corresponding portfolio choice problem this approach captures the effect of pledgeability on asset risk premiums the paper finds that the equilibrium portfolios play a heightened role as transmission channels moreover by complementing the effect of productivity shocks under borrowing constraints the pledgeability shocks improve the fit of an otherwise standard international macroeconomic model for the g7 countries especially during crises

contract farming and smallholder outgrower schemes in less developed countries abstract some studies of outgrower schemes involving smallholders and public or private corporations in less developed countries suggest the potential value of such arrangements in facilitating transfer of technology access to markets and other benefits for growers a diverse literature is surveyed to see what economic and political questions have been raised which have a bearing on the issue of grower welfare in some cases existing literature or the author s own research provides adequate answers to the questions raised in others the need for further research is indicated some possible directions and methodologies for systematic comparative studies are suggested

external balances trade flows and financial conditions abstract this paper studies how changing expectations concerning future trade and financial conditions are reflected in international external positions in the absence of ponzi schemes and arbitrage opportunities the net foreign asset position of any country must as a matter of theory equal the expected present discounted value of future trade deficits discounted at the cumulated world stochastic discount factor sdf that prices all freely traded financial assets i study the forecasting implications of this theoretical link in 12 countries australia canada china france germany india italy japan south korea thailand the united states and the united kingdom between 1970 and 2011 i find that variations in the external positions of most countries reflect changing expectations about trade conditions far into the future i also find the changing forecasts for the future path of the world sdf are reflected in the dynamics of the u s external position

a two period model with portfolio choice understanding results from different solution methods using a stylized two period model we compare portfolio solutions from two local solution approaches the approach of judd and guu 2001 and the approach of devereux and sutherland 2010 2011 with the true nonlinear portfolio solution

two way capital flows and global imbalances financial capital and xed capital tend to ow in opposite directions between poor and rich countries this paper introduces frictions into a standard two country neoclassical growth model to explain the pattern of two way capital ows between emerging economies such as china and the developed world such as the united states we show how underdeveloped nancial markets in china can lead to abnormally high rates of return to xed capital but excessively low rates of return to nancial capital relative to the u s hence driving out household savings nancial capital on the one hand while simultaneously attracting foreign direct investment fdi on the other when calibrated to match china s high marginal product of capital and low real interest rate our model is able to account for china s rising nancial capital out ows and fdi in ows as well as its massive trade imbalances in the past decades our model yields two additional implications that stand in sharp contrast to the existing literature i global trade imbalances between emerging economies and the developed world may be sustainable even in the long run and ii the conventional wisdom that the saving glut of emerging economies is responsible for the global low world interest rate may be wrong

composition and growth effects of the current account a synthesized portfolio view abstract this paper analyzes a useful accounting framework that breaks down the current account to two components a composition effect and a growth effect we show that past empirical evidence which strongly supports the growth effect as the main driver of current account dynamics is misconceived the remarkable empirical success of the growth effect is driven by the dominance of the cross sectional variation which under conditions met by the data is generated by an accounting approximation in contrast to previous findings that the portfolio share of net foreign assets to total assets is constant in a country both our theoretical and empirical results support a highly persistent process or a unit root process with some countries displaying a trend finally we reestablish the composition effect as the quantitatively dominant driving force of current account dynamics in the past data

do trade costs in goods market lead to home bias in equities abstract two of the main puzzles in international economics are the consumption and the portfolio home biases we solve for international equity portfolios in a two country two good stochastic equilibrium model with trade costs in goods markets we show that introducing trade costs as suggested by obstfeld and rogoff obstfeld m rogoff k 2000a the six major puzzles in international macroeconomics is there a common cause nber macroeconomics annual 15 is not sufficient to explain these two puzzles simultaneously on the contrary we find that trade costs create a foreign bias in portfolios for reasonable parameter values this result is robust to the addition of non tradable goods for standard calibrations of the preferences

home bias and high turnover dynamic portfolio choice with incomplete markets why do investors trade a lot in foreign assets and hold so little of them in their portfolios this paper shows that both observations can arise naturally in the presence of nondiversifiable nontraded consumption risk when each country specializes in production preferences exhibit consumption home bias and asset markets are incomplete using a general equilibrium two country two sector tradable and nontradable model of the world economy with production i show that low diversification occurs because variations in relative prices i increase the riskiness of foreign assets and ii facilitate risk sharing across countries large and volatile capital flows are necessary to take advantage of international risk premia differentials that occur in response to productivity changes in the nontradable sector i characterize the optimal portfolio holdings the evolution of the investment opportunity set the risk premium and the dynamics of capital flows using a new methodology for solving dynamic general equilibrium models with incomplete markets and portfolio choice

risk external adjustment and capital flows abstract this paper studies the process of external adjustment i develop an open economy model with endowment and preference shocks that can account for the empirical behavior of real exchange rates interest rates and consumption in the u s and europe the model includes cross border holdings of bonds and equity and financial frictions that impede international risk sharing i find that external adjustment following endowment shocks predominantly takes place via trade flows consistent with the intertemporal approach to the current account in contrast preference shocks that change investors risk aversion induce adjustment via the trade and valuation channels where the latter includes the effects of unexpected capital gains and loss on existing cross border holdings and changes in the expected future return differentials between foreign assets and liabilities the model estimates imply that the valuation channel of external adjustment is more important for the u s than the trade channel consistent with this implication i show that forecasts of future return differentials contributed most to the volatility of the u s net foreign asset position in the post bretton woods era

international portfolios capital accumulation and foreign assets dynamics despite the liberalization of capital ows among oecd countries equity home bias remains sizable we depart from the two familiar explanations of equity home bias transaction costs that impede international diversi cation and terms of trade responses to supply shocks that provide risk sharing so that there is little incentive to hold diversi ed portfolios we show that the interaction of the following ingredients generates a realistic equity home bias capital accumulation shocks to the e ciency of physical investment as well as international trade in stocks and bonds in our model domestic stocks are used to hedge uctuations in local wage income terms of trade risk is hedged using bonds denominated in local goods and in foreign goods in contrast to related models the low level of international diversi cation does not depend on strongly countercyclical terms of trade the model also reproduces the cyclical dynamics of foreign asset positions and of international capital ows

financial development international capital flows and aggregate output abstract we develop a tractable two country overlapping generations model and show that cross country differences in financial development can explain three recent empirical patterns of international capital flows financial capital flows from relatively poor to relatively rich countries while foreign direct investment flows in the opposite direction net capital flows go from poor to rich countries despite its negative net international investment positions the united states receives a positive net investment income international capital mobility affects output in each country directly through the size of domestic investment and indirectly through the aggregate saving rate under certain conditions the indirect effect may dominate the direct effect so that international capital mobility raises output in the poor country and globally although net capital flows are in the direction to the rich country we also explore the welfare and distributional effects of international capital flows and show that the patterns of capital flows may reverse along the convergence process of a developing country our model adds to the understanding of the costs and the benefits of international capital mobility in the presence of domestic financial frictions

international capital flows portfolio composition and the stability of external imbalances abstract this paper develops a simple and tractable model of net capital flows in which time varying gross country portfolios are an essential element in current account imbalances the main constituents of country portfolios in the model are general derivatives which could be interpreted as nominal bond assets and liabilities in particular under very weak conditions the world wealth distribution is stationary stationarity is generated by movements in derivative i e bond risk premia such that the return on a debtor country s gross liabilities is less than the return on its gross assets this is well known feature of the us international investment position we also provide suggestive evidence that a similar property holds more widely for a sample of advanced and emerging market countries

international capital flows under dispersed private information abstract it is well established that private information is critical to our understanding of asset prices in this paper we argue that it also affects international capital flows and use a simple two country dsge model to illustrate its impact we show that private information i increases the volatility of both net and gross capital flows ii leads to a high correlation between capital inflows and outflows iii leads to a disconnect of capital flows from observed macro fundamentals and iv implies that capital flows contain information about the future macro fundamentals we also show that dispersed information affects capital flows both through asset prices and directly so that the impact on flows is not just the mirror image of the impact on prices

a dynamic equilibrium model of imperfectly integrated financial markets abstract this paper analyzes the determination of global equity portfolios and stock returns in the context of imperfectly integrated stock markets we consider a continuous time two country endowment economy where the level of financial integration is captured by a proportional tax on foreign dividends despite the investor heterogeneity induced by this tax we obtain approximate closed form expressions for asset prices and characterize equity holdings and the joint process followed by country level stock returns in equilibrium our model is consistent with a broad range of empirical findings on international financial integration when the endogenous cross country return correlation is high small frictions in equity markets can generate a substantial home bias in portfolios in the baseline version of our model the cross country return correlation is driven by the fundamental correlation and portfolio rebalancing in a two good extension of the model the adjustment of relative good prices can generate a high stock return correlation even for a low level of fundamental correlation magnifying the impact of the financial friction on portfolios we assess the quantitative performance of the model in a calibration exercise using data from g7 countries

home bias in open economy financial macroeconomics standard theory would predict that investors hold a well diversified portfolio of equities across the world but despite the process of financial globalization investors still hold a disproportionate share of local equities in their portfolio the equity home bias french and poterba 1991 we review the various explanations of this puzzling phenomenon in the context of recent developments in macroeconomic modelling that have allowed to incorporate sophisticated international portfolio choices in standard two country general equilibrium models we refer to this literature as open economy financial macroeconomics we focus on three broad classes of explanations i hedging motives in frictionless financial markets real exchange rate and non tradable income risk ii asset trade costs in international financial markets such as transaction costs differences in tax treatments between national and foreign assets iii informational frictions and behavioural biases these recent developments raise the need for new portfolio facts beyond the equity home bias and we will present some new evidence on cross border asset holdings across different types of assets equities bonds and bank lending we also present some new micro data on institutional holdings of equity at the fund level these data should inform macroeconomic modelling of the open economy and a growing literature of models of delegated investment

optimal currency diversification for a class of risk averse international investors abstract in the framework of continuous time finance theory this paper derives the dynamic optimal consumption and portfolio rules for a risk averse international investor who consumes in fixed proportions goods produced in n different countries and holds the respective n currencies restricting the processes generating n currency prices and exchange rates to follow brownian motion optimal portfolios of eight major currencies are presented showing substantial departures from the expenditure shares and from purchasing power parity thus even under infinite risk aversion investors consuming only one good would hold a diversified currency portfolio

cross border returns differentials were the u s to persistently earn substantially more on its foreign investments u s claims than foreigners earn on their u s investments u s liabilities the likelihood that the current environment of sizeable global imbalances will evolve in a benign manner increases however we find that the returns differential of u s claims over u s liabilities is far smaller than previously reported and importantly is near zero for portfolio equity and debt securities for portfolio securities we confirm our finding using a separate dataset on the actual foreign equity and bond portfolios of u s investors and the u s equity and bond portfolios of foreign investors in the context of equity and bond portfolios we find no evidence that the u s can count on earning more on its claims than it pays on its liabilities finally we reconcile our finding of a near zero returns differential with observed patterns of cumulated current account deficits the net international investment position and the net income balance jel codes f3

computing second order accurate solutions for rational expectation models using linear solution methods this paper shows how to compute a second order accurate solution of a non linear rational expectation model using algorithms developed for the solution of linear rational expectation models the result is a state space representation for the realized values of the variables of the model this statespace representation can easily be used to compute impulse responses as well as conditional and unconditional forecasts

volatile capital flows and financial integration the role of moral hazard abstract we study a model in which income and capital flows between countries are jointly determined in a world economy with integrated financial markets in a setting that combines risky entrepreneurial activity with moral hazard we find that a shift from autarky to financial integration leads to boom bust cycles in capital flows output and consumption moral hazard causes cycles because financial intermediaries incentivize effort by insisting entrepreneurs take an equity share in their own projects the size of this stake rises with wealth discouraging entrepreneurship and inhibiting capital formation the reverse is true when wealth falls generating cycles

globalization and the increasing correlation between capital inflows and outflows abstract the correlation between capital inflows and outflows has increased substantially over time in a sample of 127 advanced and developing countries we provide evidence that this is a result of an increase in financial globalization stock of external assets and liabilities this dominates the effect of an increase in trade globalization exports plus imports which reduces the correlation between capital inflows and outflows in the context of a two country model with 8 shocks we show that the theoretical impact of financial and trade globalization on the correlation between capital inflows and outflows is consistent with the data

on optimal wage indexation the observed practice of contracting for labor services in advance introduces stickiness or friction into the economic system in the presence of monetary and real stochastic disturbances the stability of the levels of employment and output hinges on the nature of the wage contracts in this paper we demonstrate the existence of optimal indexation schemes that are capable of eliminating the aforementioned friction by duplicating the equilibrium that would obtain if labor services were contracted for after the stochastic disturbances were realized

international capital flows abstract the surge in international asset trade since the early 1990s has lead to renewed interest in models with international portfolio choice we develop the implications of portfolio choice for both gross and net international capital flows in the context of a simple two country dynamic stochastic general equilibrium dsge model we focus on the time variation in portfolio allocation following shocks and resulting capital flows endogenous time variation in expected returns and risk which are the key determinants of portfolio choice affect capital flows in often subtle ways the model is consistent with a broad range of empirical evidence an additional contribution of the paper is to overcome the technical difficulty of solving dsge models with portfolio choice by developing a broadly applicable solution method

financial integration macroeconomic volatility and welfare this paper studies the effects of financial integration on macroeconomic volatility and welfare we examine a two sector tradable and nontradable twocountry world economy with production in which both stocks and bonds are traded internationally but markets are incomplete the effects of integration are examined by comparing the equilibrium properties of the model under three financial configurations autarky low integration and high integration the model predicts a non monotonic relationship between the degree of financial integration and the volatility of several macroeconomic variables greater integration is initially associated with more volatile consumption and output but as integration proceeds further volatility declines we also find that while increased integration allows for significantly greater risk sharing between countries the improvement in welfare can be very small

the risk premium and long run global imbalances this study proposes that heterogeneous household portfolio choices within a country and across countries offer an explanation for global imbalances we construct a stochastic growth multi country model in which heterogeneous agents face the following restrictions on asset trade first the degree of us equity market participation is higher than that of the rest of the world second a fraction of households in each country maintains a fixed share of equity in its portfolios in our calibrated model which matches the us net foreign asset position and the equity premium the average us household loads up more aggregate risk than the average foreign household by investing in risky assets abroad and issuing risk free assets as a result the us is compensated by a high risk premium and runs trade deficits even as a debtor country the long run average trade deficit in our model accounts for 50 of the observed us trade deficit

evolution of bilateral capital flows to developing countries at intensive and extensive margins motivated by the rise in capital flows to low income countries lics we examine the nature of these flows and the factors affecting foreign investors decision recognizing the presence of fixed investment costs we analyze capital flows at both intensive and extensive margins to fix ideas we resort to the gravity literature for the estimating relationships which we embed into a two tier econometric framework with cross sectional dependence our main finding is that market entry costs are statistically and economically very detrimental to lics we also obtain the gravity type relationship for the destination income unconditionally but not after conditioning on relevant variables as well as establish labor productivity as a robust attractor of capital inflows

discussion on gross capital flows dynamics and crises by broner didier erce and schmukler international capital flows have always been an important topic in international economics capital flows help a country exploit better investment opportunity and smooth consumption over the past few years global current account imbalances have been at the forefront of policy debates large amount of research devotes to the study of net capital flows while fewer works put their focus on gross capital flows this paper fills the gap this paper provides a systematic analysis over business cycle behavior of gross capital flows it looks at 103 countries between 1970 and 2009 the countries are divided into three groups lower middler income upper middler income and high income countries three forms of capital flows are examined direct investment portfolio and other investments to study impact of crisis over gross capital flows it also classifies financial crisis into different types banking crisis currency crisis and domestic debt and external debt crisis the paper has the following key findings first both gross capital inflows and outflows increase relative to gdp trend over period of time second gross flows are larger and more volatile than net flows third gross inflows and outflows are positively correlated especially for high income countries lastly both inflows and outflows are procyclical and shrink during crises decline of capital flows during crises is observed in all forms direct investment portfolio and other investments broner et al raise a new challenge for the international literature standard international real business cycle model as in backus et al 1992 mostly has one asset and cannot address issues related to global capital flows this paper calls for a unified theory to model gross capital flows and to account for the key findings in this paper one candidate is the literature on portfolio choices this literature mainly focuses on long run composition of portfolios the so called home bias puzzle in asset french and poterba 1991 first pointed out american held roughly 94 of their equity wealth in the us stock market heathcote and fabrizio 2007 give a review over the findings in this literature two exceptions hnatkovska 2010 and tille and wincoop 2010 study cyclicality of gross capital flows their models however generate counterfactual capital flows as pointed out by broner et al in this discussion i focus on new theories that have the potential to explain co movement of capital inflows and outflows

global implications of national unconventional policies abstract financial integration in the markets for banks assets and liabilities makes balance sheet constraints highly correlated across countries resulting in a high degree of financial and macroeconomic interdependence likewise under financial integration unconventional policies aimed at stabilizing domestic financial and credit conditions could entail large international spillovers therefore stabilization by one country will also benefit other countries reducing incentives to implement credit policies in a classic free riding problem especially when these policies entail domestic costs we show that this outcome can emerge in an open economy model featuring financial intermediaries that face endogenously determined balance sheet constraints

international portfolio diversification and multilateral effects of correlations not only are investors biased toward home assets but when they do invest abroad they appear to favor countries with returns more correlated with home assets often attributed to a preference for familiarity this correlation puzzle further reduces effective diversification we use a multi country general equilibrium model of portfolio choice to study how bilateral equity holdings are affected by return correlations among alternative destination and source countries from the theoretical model we develop an empirical approach to estimate a gravity equation for equity holdings that incorporates the overall covariance structure in a theoretically rigorous yet tractable manner estimation using this approach resolves the correlation puzzle and finds that international investors do seek the diversification benefits of low cross country correlations as theory would predict

valuation effects with transitory and trend productivity shocks abstract changes in asset prices of a country s foreign assets and liabilities valuation effects are commonly thought of as stabilizing they counteract current account movements and mitigate the impact of the current account on the country s net foreign asset nfa position this paper shows that whether valuation effects are stabilizing or not depends critically on the nature of the underlying productivity shocks in response to transitory shocks valuation effects are stabilizing but in response to trend shocks such effects amplify the impact of the current account on nfa position these contrasting effects arise because optimally smoothing consumers respond differently to a transitory shock than to a trend shock to income this theoretical result finds empirical support with g7 countries data and is illustrated by the pattern of external imbalances between the u s and other g7 countries since the 1990s

current accounts in debtor and creditor countries the authors reexamine a classic question in international economics what is the current account response to a transitory income shock such as a temporary improvement in the terms of trade a transfer from abroad or unusually high production to answer this question they construct a world equilibrium model in which productivity varies across countries and international borrowing and lending take place to exploit good investment opportunities despite its conventional ingredients the model generates the novel prediction that favorable income shocks lead to current account deficits in debtor countries and current account surpluses in creditor countries evidence from thirteen oecd countries broadly supports this theoretical prediction

country portfolios in open economy macro models this paper develops a simple approximation method for computing equilibrium portfolios in dynamic general equilibrium open economy macro models the method is widely applicable simple to implement and gives analytical solutions for equilibrium portfolio positions in any combination or types of asset it can be used in models with any number of assets whether markets are complete or incomplete and can be applied to stochastic dynamic general equilibrium models of any dimension so long as the model is amenable to a solution using standard approximation methods we first illustrate the approach using a simple two asset endowment economy model and then show how the results extend to the case of any number of assets and general economic structure

on the theory of international currency portfolios abstract the paper develops a general equilibrium theory of the optimal currency composition of international bond portfolios like the partial equilibrium portfolio balance literature of the 1980s the theory emphasizes the critical roles of government debt and government balance sheet operations in the determination of portfolios prices and allocations consistent with empirical findings optimal foreign currency positions are found to be small with their size decreasing with exchange rate volatility while optimal domestic currency positions are large and increasing with domestic interest rates a large open market purchase of domestic currency bonds from private households lowers domestic interest rates

nominal budgeting as a stabilization rule the optimal degree of indexation of public spending abstract we analyze here a novel instrument of fiscal policy the degree of adjustment of public spending to price surprises this acts as an automatic stabilizer which fully substitutes for wage indexation partial reliance on nominal budgeting is usually optimal in contrast to the conventional assumption of pegged real government spending unlike what emerges in the wage indexation literature we show that the more pronounced is the relative importance of demand shocks the stronger is the case for lack of indexed public spending we find that a low degree of wage indexation may be the optimal response to government budgets not cast in real terms

asset prices exchange rates and the current account this paper analyses the role of asset prices in comparison to other factors in particular exchange rates as a driver of the us trade balance it employs a bayesian structural var model that requires imposing only a minimum of economically meaningful sign restrictions we find that equity market shocks and housing price shocks have been major determinants of the us current account in the past accounting for up to 30 of the movements of the us trade balance at a horizon of 20 quarters by contrast shocks to the real exchange rate have been less relevant explaining about 9 and exerting a more temporary effect on the us trade balance our findings suggest that large exchange rate movements may not necessarily be the key element of an adjustment of today s large current account imbalances and that in particular relative global asset price changes could be a potent source of adjustment