role of distribution factors in congestion revenue rights applications in the locational marginal price lmp based congestion management scheme transmission customers face uncertainty in the congestion charges they incur in order to bring certainty to customers congestion revenue rights crr such as the fixed transmission rights ftr used in the pjm interconnection and flowgate rights fgr are introduced these crr are financial tools that provide the holder reimbursement of the congestion charges incurred in the day ahead market the implementation of crr requires appropriate modeling of the transmission network in which the distribution factors are extensively used these factors the injection shift factors isfs and the power transfer distribution factors ptdfs are linear approximations of the sensitivities of the active power line flows with respect to various variables the factors are computed for a specified network topology and parameter values in practice the ptdfs used for the crr issuance may be different from those used in the day ahead market due to changes in the forecasted network conditions the ptdf errors may impact the ftr issuance quantities the revenue adequacy of the ftr issuer and the hedging ability of the fgr in this paper we explore analytical characteristics of these distribution factors and investigate their role in crr applications we study the nature of the ptdf errors and examine their impacts in these applications both analytically and experimentally our results indicate that the impacts of the ptdf errors in crr applications stay in an acceptable range under a broad spectrum of conditions including contingencies used to establish n 1 security

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 reappraisal of the allocation puzzle through the portfolio approach paradoxically high growth high investment developing countries tend to experience capital outflows this paper shows that this allocation puzzle can be explained simply by introducing uninsurable idiosyncratic investment risk in the neoclassical growth model with international trade in bonds and by taking into account not only tfp catch up but also the capital wedge that is the distortions on the return to capital the model fits the two following facts documented on a sample of 67 countries between 1980 and 2003 i tfp growth is positively correlated with capital outflows in a sample including creditor countries ii the long run level of capital per efficient unit of labor is positively correlated with capital outflows consistently we show that the capital flows predicted by the model are positively correlated with the actual ones in this sample once the capital wedge is accounted for the fact that asia dominates global imbalances can be explained by its relatively low capital wedge

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

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

economic measurement progress and challenges the national income accounts together with the source data which they use form the core of our economic measurement system the development of the concepts and measurements of national income are among the most important achievements of modern economics replacing the older notions of national wealth of the physiocrats and mercantilists for example is national income and product confined to market activity the appropriate fundamental concept yes but we ask a lot of national income and product accounting it is used most importantly to gauge economic progress how much better off are we than our parents or grandparents is the economy growing adequately slowly or rapidly in recent years and are we at a cyclical turning point the information requirements of course will differ depending on the question gaps in inventory measurement may be an appropriate resource claimant to those interested in cyclical issues whereas finding identifying and incorporating new products and quality change more rapidly may be far more significant to long term economic growth we also tend to have a survivor selection bias in our concern with the speed with which new ideas and concepts are incorporated into the national accounts and other data series superlative indexes hedonic regression methods for quality change and many others were much more obvious after some years of diffusion throughout the profession than at their inculcation as a result the gap between major suggested improvements and their adoption by statistical agencies can be extensive often decades erwin diewert 1999 should national accounts be extended to nonmarket activity nonmarket work time is perhaps the most important area for supplemental information natural resources and the environment are close behind william d nordhaus and edward kokkenlenberg 1999 r d capital environmental capital human capital and other intangibles are high priority items but should be dealt with in the form of satellite accounting so i applaud the bea s recent initiatives in this direction i come to this conclusion for a variety of reasons not to suggest that technological capital and human capital are less important than tangible capital in fact perhaps quite the opposite they are all complementary boskin and lawrence lau 2000 but the issues in definition classification and measurements are still more problematic for these items than for traditional items and therefore i believe they should not be added directly to the national income and product accounts nipa in short my own view is that substantial improvements can and should be made in the traditional domain of the national accounts improvements in the core national accounts should not be sacrificed to a proliferation of satellite accounts in principle we should do both and sufficient resources should be provided to accomplish these tasks

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

the one sector growth model with idiosyncratic shocks steady states and dynamics abstract this paper investigates the one sector growth model where agents receive idiosyncratic labor endowment shocks and face a borrowing constraint it is shown that any steady state capital stock lies strictly above the steady state in the model without idiosyncratic shocks in addition the capital stock increases monotonically when it is sufficiently far below a steady state however near a steady state there can be non monotonic economic dynamics

securitized markets international capital flows and global welfare we study the effect of collateralized lending and securitization on the global supply of securitized assets welfare and international net and gross capital flows in a two country general equilibrium model with idiosyncratic investment risk the financial sectors in the two countries home and foreign differ by the collateral requirement for investment loans with home requiring lower margins in autarky home endogenously supplies more assets and enables more risk sharing upon financial integration capital flows from foreign to home leading to lower interest rates and an increase in the global supply of assets foreign enjoys substantial welfare gains through better risk sharing and portfolio reallocation while the welfare experience for home is ambiguous gross capital flows arise when agents face aggregate shocks to the expected payoff to investment projects but can collapse when shocks concern the variance of returns

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

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

optimal reserves in financially closed economies abstract financially closed economies insure themselves against current account shocks using international reserves we characterize the optimal management of reserves using an open economy model of precautionary savings and emphasize several results first the welfare based opportunity cost of reserves differs from the measures often used in the literature second under plausible calibrations the model is consistent with the rule of thumb that reserves should be close to three months of imports third optimal linear rules can capture most of the welfare gains from optimal reserve management but significantly differ from certainty equivalence fourth policymakers should place more emphasis on how to use reserves in response to shocks than on the reserve target itself

the demand for liquid assets corporate saving and international capital flows the recent period of capital outflows from emerging economies has coincided with an increase in their corporate saving in this paper we model corporate saving as a demand for liquid assets by credit constrained firms in a dynamic open economy macroeconomic model we find that the implications of this model are very different from standard models because the demand for foreign bonds is a complement to domestic investment rather than a substitute we show that this complementarity is at work when an emerging economy is on its convergence path or when it has a higher tfp growth rate this framework is consistent with a number of stylized facts found in high growth high investment emerging economies

house prices home equity based borrowing and the u s household leverage crisis us household leverage sharply increased in the years preceding the 2007 eco nomic recession the top panel of figure 1 shows the steady rise in household debt since 1975 which accelerated beginning in 2002 in just five years the household sector doubled its debt balance in comparison the contemporaneous increase in corporate debt was modest the middle panel shows that the increase in household debt from 2002 to 2007 translated into a striking rise in household leverage as mea sured by the debt to income ratio during the same time period corporate leverage declined the dramatic absolute and relative rise in us household leverage from 2002 to 2007 is unprecedented compared to the last 25 years one reason for the rapid expansion in household leverage during this period is that mortgage credit became more easily available to new home buyers mian and sufi 2009 strong house price appreciation from 2002 to 2006 however which may have been fueled by the availability of mortgage credit to a riskier set of new home buyers could also have had an important feedback effect on household lever age through existing homeowners given that 65 percent of us households already owned their primary residence before the acceleration in house prices the feedback from house prices to borrowing may be an important source of the rapid rise in household leverage that preceded the economic downturn our central goals in this study are to estimate how homeowner borrowing responded to the increase in house prices and to identify which homeowners responded most aggressively we examine this home equity based borrowing channel using a dataset consisting of anonymous individual credit files of a national consumer credit bureau agency we follow a random sample of over 74 000 us homeowners who owned their homes as of 1997 at an annual frequency from the end of 1997 until the end of 2008 the bottom panel of figure 1 plots the growth in debt of 1997 homeowners over time and shows that existing homeowners borrow significantly more debt as their house prices appreciate from 2002 to 2006 while the aggregate trend is suggestive

compensating differentials in emerging labor and housing markets estimates of quality of life in russian cities abstract the purpose of this paper is to see if an equilibrium model of compensating differences for amenities can be applied to a major transition economy russia we analyze russian labor and housing markets using data from the russian longitudinal monitoring survey rlms augmented by city and regional specific characteristics from other sources our estimated wage and housing value equations suggest that workers are compensated for differences in climate environmental conditions ethnic conflicts crime rates and health conditions after controlling for worker characteristics occupation industry and economic conditions and various housing characteristics we find evidence that these compensating differentials exist even after controlling for the regional pay differences regional coefficients used by the russian government to compensate public sector workers for living in regions that are designated as less desirable quality of life as measured by a group of eleven amenities varies substantially the highest ranked cities tend to be in relatively warm areas and areas in the western european part of the country our quality of life index is positively correlated with net migration into a region suggesting workers are attracted to amenity rich locations overall we find that a model of compensating differentials with controls for disequilibrium yields useful information about compensation for location specific amenities and quality of life in this large transition economy

a comprehensive assessment of the evolution of financial transmission rights financial transmission rights ftrs are complementary to the locational marginal pricing of energy the basic aim of the ftr mechanism is to guard forward contracts from uncertain congestion charges ftrs are also useful to individual generators and loads for selling and buying power respectively at the prices of other locations the concept has evolved encompassing many features such as a simultaneous feasibility test various ways to conduct auctions and allocations and secondary trading ftrs also have a close relation to market power and transmission investment this paper reviews most of the landmark research papers on the evolution of the ftr concept it reports a comprehensive assessment of various facets of ftrs and allied issues financial transmission rights and flowgate rights fgrs are compared the concept of long term ftrs is discussed the paper also touches upon future proposals in this area

north south lending and endogenous domestic capital market inefficiencies abstract we develop an open economy model of intertemporal trade under asymmetric information capital market imperfections are endogenous and depend on a country s stage of economic development relative to the perfect information benchmark north south capital flows are dampened and possibly reversed and world interest rates are lower whereas riskless rates are equalized across borders the domestic loan rate is higher in poorer countries the model can be applied to a number of policy issues including the debt overhang problem the indexation of foreign public debts and the effect of income distribution on growth

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

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

capital mobility and international sharing of cyclical risk this paper investigates whether the international globalization of financial markets allows for significant cross country risk sharing at the business cycle frequency we find that cross country risk sharing is still limited and this is unlikely to be the result of financial frictions that limit state contingent contracts part of the limited international risk sharing could be the consequence of frictions that de facto reduce the short term mobility of financial capital but even with these frictions we find significant divergence between model predictions and the data

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

an olg model of global imbalances in this paper we investigate the relationship between east asian countries high propensity to save and global imbalances in a two country olg model with production the saving behavior of emerging economies and capital outflows to the united states can be attributed to their poor pay as you go systems the model predicts that emerging countries run a trade surplus only as long as the long run growth rate of the economy is higher than the real interest rate capital overaccumulation case the low real interest rate in the us is therefore evidence in favor of the hypothesis that there is a global saving glut in the world economy the model can explain why the us current account deteriorated gradually and only in the late 1990s although the net foreign asset position had already turned negative in the early 1980s finally the analysis also implies that an improvement of the pay as you go system in china would have the effect of reducing the imbalances in accordance with the theory we find that the higher is the percentage of the working population covered by the pay as you go system the lower are savings and the current account balance in a cross section of countries

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

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

capital flows to developing countries this article focuses on the determinants of the large portfolio flows from the united states to latin american and asian countries during 1988 92 cointegration techniques reveal that both domestic and global factors explain bond and equity flows to developing countries and represent significant long run determinants of portfolio flows the article also investigates the dynamics of portfolio flows by estimating seemingly unrelated error correction models global and country specific factors are equally important in determining the long run movements in equity flows for both asian and latin american countries while global factors are much more important than domestic factors in explaining the dynamics of bond flows u s interest rates are a particularly important determinant of the short run dynamics of portfolio especially bond flows to developing countries

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

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

the concept of income in a general equilibrium this paper derives a concept of aggregate real income for a competitive economy in general equilibrium consisting of heterogeneous infinitely lived people and relates it to current and future consumption possibilities an important characteristic of our measure of income which we call real income is that deflation is carried out using a consumption deflator rather than any price index of output we suggest that it may be inappropriate to regard capital gains as income we also present a coherent treatment of the effects of changes to the terms of trade on real income and explain the implications of this for resourceexporting economies hicks 1939 defined income as the maximum amount a man can spend and still be as well off at the end of the week as at the beginning since then there has been a succession of attempts to apply this definition the problem is as hicks acknowledged that the correct interpretation of as well off is by no means clear weitzman 1976 and asheim 1997 suggest that income is equal to the level of consumption which could be sustained indefinitely out of the capitalized value of current income and equate this to being as well off at the end of the week as at the beginning eisner 1988 argues specifically that in a total incomes system effects arising from asset price changes and conventionally regarded as capital gains should be included with income here building on earlier work by sefton and weale 1996 asheim and weitzman 2001 and pemberton and ulph 2001 we provide a comprehensive account of the implications of the idea that as well off should be understood to mean that the present discounted value of current and future utility should be unchanged over the interval considered we work in the context of a general equilibrium taking the prices established in the general equilibrium as given we first look at income from the production side showing that in an economy where prices and the interest rates satisfy an intertemporal efficiency condition income along an equilibrium path can be interpreted as a weighted average of the value of the current and future consumption bundle plus a term adjusting for changes in the nominal price level converting prices to real prices by deflating by the divisia consumption price index removes the need for this adjustment these results are suggestive first they offer a way of defining the income of a household entirely in terms of its consumption possibilities second they indicate that to calculate real income deflation is best carried out using a price index of consumption this is a substantial divergence from current national accounting practice third because we have assumed constant returns there is a trivial aggregation result that aggregate income is equal to the sum of the incomes from the individual sectors

household saving financial constraints and the current account in china in this article we present a model that can account for the changes in the current account balance in china since the 2000s our results suggest that inadequate insurance through government programs for the elderly and the decline in family insurance due to the one child policy led to large increases in the household saving rate these increases coupled with the financial frictions preventing the household saving from being invested in domestic firms resulted in large current account surpluses until 2008 relaxation of financial constraints on the other hand was responsible for the decline in the current account surplus after 2008

international capital flows external assets and output volatility abstract cross sectional evidence for 119 developing emerging and developed countries shows over the last three decades that countries with an on average higher volatility of output growth experience more procyclical capital outflows over the business cycle than those countries with the same growth rate but a more stable output path this stylized pattern shows up in addition to the recently established fact that countries with higher macroeconomic uncertainty tend to accumulate higher external asset positions to explain this finding we present an open economy real business cycle model with stochastic growth rates in which higher uncertainty of the expected income stream increases the precautionary savings of households we show that the combination of income risk and the precautionary savings motive leads to both more procyclical capital outflows in the shorter run and a higher long run external asset position

foreign direct investment and debt financing in emerging economies the rich dynamics of capital flows is an important characteristic of business cycles in emerging market economies in the data external debt is always procyclical while fdi is procyclical only in normal times we provide a microfounded rationale for this pattern by linking financial shocks to capital flows for this purpose we build a small open economy model in which firms are subject to borrowing constraints and are either owned domestically or by foreign investors who purchase firms through fdi during a financial crisis the valuation gap per unit net worth between foreign and domestic investors widens which triggers more fdi inflow our model produces business cycle moments consistent with empirical observations

capital market imperfections international credit markets and nonconvergence abstract we consider a two country growth model with international capital markets these markets fund capital investment in both countries and operate subject to a costly state verification csv problem investors in each country require some external finance but also provide internal finance which mitigates the csv problem when two identical except for their initial capital stocks economies are closed they necessarily convergemonotonicallyto the same steady state output level unrestricted international financial tradeprecludesotherwise identical economies from converging and poor countries are necessarily net lenders to rich countries oscillation in real activity and international capital flows can occur journal of economic literatureclassification numbers e00 f00 f34 g14

financial globalization inequality and the rising public debt abstract during the last three decades government debt has increased in most developed countries during the same period we have also observed a significant liberalization of international financial markets we propose a multicountry model with incomplete markets and show that governments may choose higher levels of debt when financial markets become internationally integrated we also show that public debt increases with the volatility of uninsurable income idiosyncratic risk to the extent that the increase in income inequality observed in some industrialized countries has been associated with higher idiosyncratic risk the paper suggests another potential mechanism for the rise in public debt jel d31 e62 f65 h63

external constraints and endogenous growth why didn t some countries benefit from capital flows empirical evidence on the growth benefits of capital inflows is mixed the growth benefits accruing from capital inflows also appear to be larger for high savings countries we explain this phenomenon using an olg model of endogenous growth in open economies with borrowing constraints that can generate both positive and negative growth effects of capital inflows the amount an economy can borrow is restricted by an endogenous enforcement constraint in our setting with physical capital and a pay as you go pensions system the steady state is unique however it can either be constrained or unconstrained in a constrained economy opening up to equity and fdi inflows can be bad for growth because it makes the domestic interest rate too low which endogenously tightens borrowing constraints agents decrease savings and investment in productivity enhancing activities resulting in lower growth results are reversed in an unconstrained economy we also provide a quantitative analysis of these constraints and some policy implications

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

the real real price of nonrenewable resources copper 1870 2000 over the past 40 years economists have devoted considerable effort to estimating long run trends in real commodity prices the results indicate that the real prices for many commodities have fallen suggesting to the surprise of many that resource scarcity is declining over time almost all of this work however uses the u s producer price index or other standard price deflators which recent research shows overestimate inflation for several reasons this article examines copper prices with adjusted deflators designed to eliminate this bias it finds that the trend over time which is significantly downward when no adjustment is made to the deflator displays no tendency in either direction or is significantly upward depending on the magnitude of the deflator adjustment employed these findings suggest that real resources prices provide less support than widely assumed for the hypothesis that resources are becoming more available or less scarce over time

on the quantitative importance of market completeness abstract this paper quantitatively compares allocations in calibrated large overlapping generations growth models that only differ in their market structures for insuring against aggregate risk the findings are that the equilibrium behavior of aggregate variables is very similar across all market structures there are only minor differences the ratio of the volatility of aggregate consumption relative to that of investment is higher in complete market economies due partly to the higher volatility of consumption of older people it was also found that the risk premia in complete markets economies is basically zero therefore we can conclude that we can for the most part abstract from the issue of whether there exist markets for aggregate risk

financial integration and growth in a risky world abstract we revisit the debate on the benefits of financial integration in a two country neoclassical growth model with aggregate uncertainty the framework accounts simultaneously for gains from a more efficient capital allocation and gains from risk sharing together with their interaction global numerical methods allow for meaningful welfare comparisons gains from integration are quantitatively small even for riskier and capital scarce emerging economies these countries import capital for efficiency reasons before exporting it for self insurance leading to capital flows and growth reversals along the transition this opens the door to richer empirical implications than previously considered in the literature

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

uninsured idiosyncratic production risk with borrowing constraints the author analyzes a general equilibrium model of a heterogeneous agents economy in which the agents are subject to borrowing constraints and uninsurable idiosyncratic production risk

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

income and wealth heterogeneity in the macroeconomy how do movements in the distribution of income and wealth affect the macroeconomy we analyze this question using a calibrated version of the stochastic growth model with partially uninsurable idiosyncratic risk and movements in aggregate productivity our main finding is that in the stationary stochastic equilibrium the behavior of the macroeconomic aggregates can be almost perfectly described using only the mean of the wealth distribution this result is robust to substantial changes in both parameter values and model specification our benchmark model whose only difference from the representative agent framework is the existence of uninsurable idiosyncratic risk displays far less cross sectional dispersion and skewness in wealth than u s data however an extension that relies on a small amount of heterogeneity in thrift does succeed in replicating the key features of the wealth data furthermore this extension features aggregate time series that depart significantly from permanent income behavior

testing agency theory with entrepreneur effort and wealth we develop a principal agent model in an entrepreneurial setting and test the model s predictions using unique data on entrepreneurial effort and wealth in privately held firms accounting for unobserved firm heterogeneity using instrumental variables techniques we find that entrepreneurial ownership shares increase with outside wealth and decrease with firm risk effort increases with ownership and effort increases firm performance the magnitude of the effects in the cross section of firms suggests that agency costs may help explain why entrepreneurs concentrate large fractions of their wealth in firm equity

endogenous market incompleteness with investment risks abstract this paper studies a general equilibrium economy in which agents have the ability to invest in a risky technology the investment risk cannot be fully insured with optimal contracts because shocks are private information we show that the presence of investment risks lead to under accumulation of capital relative to an economy where idiosyncratic shocks can be fully insured we also show that the availability of state contingent optimal contracts compared to simple debt contracts brings the aggregate stock of capital close to the complete markets level institutional reforms that make possible the use of these contracts have important welfare consequences

optimized ftr portfolio construction based on the identification of congested network elements this paper focuses on the construction of an optimized financial transmission rights ftr or congestion revenue rights portfolio for an ftr market participant given his assessment of the frequency and economic impacts of binding constraints in the transmission network we overcome the data handling and heavy computing demands of locational marginal price lmp difference based methods for ftr selection by recasting the problem into one that focuses on the underlying product of binding constraints which are physically observable phenomena based on the mathematical insights into the structural characteristics of the model used for the clearing of the hourly day ahead markets differentials in the lmps are due to system congestion and so are merely manifestations of binding constraints in the transmission network in addition we exploit extensively the salient topological characteristics of large scale interconnections the market participant specifies the subset of focus constraints and the position he is willing to take on them our approach builds on the mathematical insights and topological characteristics with the effective deployment of the orthogonal matching pursuit algorithm to construct the optimized ftr portfolio characterized by the minimum number of node pairs for the specification of the ftr elements we apply the proposed approach to a test system based on the pjm iso network and markets to illustrate its capabilities for solving the ftr market participant s problem in realistic large scale systems

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

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

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

new directions in national economic accounting the national income and product accounts nipa are the most important measures of overall economic activity for a nation much as a satellite in space can survey the weather across an entire continent so can the gdp give an overall picture of the state of the economy nevertheless since their inception there have been concerns that the accounts are incomplete and misleading because they omit vast continents of nonmarket activity such as unpaid work the value of leisure time investment in human capital and most recently the environment the threshold question is why should we devote scarce intellectual resources to studying nonmarket sectors the basic insight behind nonmarket accounts is that economic and social welfare does not stop at the market s border but extends to many nonmarket activities three particular areas are worth emphasizing one important reason why we need better measures of nonmarket activity is because we spend increasingly fewer of our lifetime hours in market activities a second and more speculative reason concerns the growing importance or at least the great importance of nonmarket assets or mispriced market assets such as the environment and technology a third point is that current measures of national saving and investment are highly defective the examples later in this paper address each of these issues many of these issues were reviewed in a recent report on augmented accounting by the national academy of sciences see nordhaus and edward kokkelenberg 1999

financial structure corporate savings and current account imbalances abstract we explore the effects of a country s financial structure on its corporate savings and current account a financial system that relies relatively more on banks and less on the capital market presents more difficulties for small and medium sized enterprises to access external finance these firms find it necessary to accumulate more savings on their own as a result countries that have a less developed capital market are more likely to run current account surpluses or smaller current account deficits using panel data of 66 countries for the period 1990 2007 we find consistent and robust evidence in favor of this hypothesis further explorations based on firm level data reveal that firms especially smaller firms in economies with relatively underdeveloped capital markets do save significantly more than their counterparts in countries with relatively more developed capital markets

financial integration entrepreneurial risk and global dynamics abstract how does financial integration impact capital accumulation current account dynamics and cross country inequality we investigate this question within a two country general equilibrium incomplete markets model that focuses on the importance of idiosyncratic entrepreneurial risk a risk that introduces not only a precautionary motive for saving but also a wedge between the interest rate and the marginal product of capital our contribution is to show that this friction provides a simple explanation for the emergence of global imbalances a resolution to the empirical puzzle that capital often fails to flow from the rich or slow growing countries to the poor or fast growing ones and a set of policy lessons regarding the intertemporal costs and benefits of capital account liberalization

a conceptual exploration and critical inquiry into the theoretical foundation s of economic welfare measures abstract economic welfare measures ewm such as the isew and the gpi are often argued to lack a sound theoretical foundation however we observe that the initial ewm were jointly inspired by hicksian and fisherian income welfare s experiential nature is fisherian inspired whereas seeing the consumption of community capital e g the ecosystem as a cost is hicksian inspired as most scholars do not recognize this double theoretical foundation two distinct welfare interpretations with different time and boundary dimensions are often conflated ewm can be seen as either capturing the benefits and costs experienced or as reflecting the benefits and costs of present economic activities bcpa the former interpretation excludes future costs costs shifted abroad and capital changes as they are not experienced in the present while the latter includes them recent developments reveal that ewm are converging toward the ex post established experiential fisherian foundation formulated by lawn 2003 yet this is not the only way forward as the bcpa view offers an alternative to account for for instance the costs of present activities shifted abroad or to the future whether they are experienced or not to avoid inconsistencies ewm s standardization would greatly benefit from making explicit in future studies which interpretation is taken

credit constraints and growth in a global economy we show that in an open economy olg model the interaction between growth differentials and household credit constraints more severe in fast growing countries can explain three prominent global trends a divergence in private saving rates between advanced and emerging economies large net capital outflows from the latter and a sustained decline in the world interest rate micro level evidence on the evolution of age saving profiles in the u s and china corroborates our mechanism quantitatively our model explains about 40 percent of the divergence in aggregate saving rates and a significant portion of the variations in age saving profiles across countries and over time

congestion management schemes a comparative analysis under a unified framework the restructuring of the electricity industry has spawned the introduction of new independent grid operators igos typically called transmission system operators tsos independent system operator isos or regional transmission organizations rtos in various parts of the world an important task of an igo is congestion management cm and pricing this activity has significant economic implications on every market participant in the igo s region the paper briefly reviews the cm schemes and the associated pricing mechanism used by the igos in five representative schemes these were selected to illustrate the various cm approaches in use england and wales norway sweden pjm and california the authors develop a unified framework for the mathematical representation of the market dispatch and redispatch problems that the igo must solve in cm in these various jurisdictions they use this unified framework to develop meaningful metrics to compare the various cm approaches so as to assess their efficiency and the effectiveness of the market signals provided to the market participants they compare using a small test system side by side the performance of these schemes

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

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

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

idiosyncratic production risk growth and the business cycle we introduce a neoclassical growth economy with idiosyncratic production risk and incomplete markets each agent is an entrepreneur operating her own technology with her own capital stock the general equilibrium is characterized by a closed form recursion in the cara normal case incomplete markets introduce a risk premium on private equity which reduces the demand for investment as compared to complete markets the steady state can thus have both a lower capital stock due to investment risk and a lower interest rate due to precautionary savings furthermore the anticipation of high real interest rates in the future feeds back into high risk premia and low investment in the present thus slowing down convergence to the steady state our results highlight the importance of private risk premia for capital accumulation and business cycles

framework for the design and analysis of congestion revenue rights the capability to deal effectively with the uncertainty associated with locational marginal prices lmps in congestion management schemes requires the development of appropriate financial tools congestion revenue rights crr are hedging tools that provide the holder reimbursement of the congestion charges in the day ahead market and thereby provide transmission service customers with price certainty in this paper we construct a framework for the design and analysis of the crr by marrying finance theory notions with salient characteristics of electric power systems and electricity markets the framework consists of three interconnected layers with one layer each to represent the models of the transmission network the commodity markets and the crr financial markets the interaction between the layers is represented as information flows the framework has sufficient scope to allow the analysis of a broad range of problems associated with ensuring price certainty for transmission services the structural modularity of the framework provides the flexibility to analyze issues and design structures for the provision of transmission services in the competitive environment we introduce a new notion of crr payoff parity and a practical pricing scheme which are used as the basis for the design of more liquid crr markets the application of the framework is further illustrated by the analysis of the conditions that guarantee the revenue adequacy for the crr issuer