Sovereign Ratings and Oil‐Exporting Countries: The Effect of High Oil Prices on Ratings

We investigate how high and rising oil prices in the 2003–2008 period affected the sovereign ratings of oil‐exporting countries, after controlling for fundamentals. Based on a large dataset of countries from Standard and Poor's and Moody's, we find strong statistical evidence of a large ratings premium – nearly two notches – for those oil‐exporting countries with a large share of net oil revenue to gross domestic product, relative to countries with similar economic fundamentals. We have some limited forecast information from the rating agencies and the effect increases when we include this information, providing further evidence that this ratings premium is not driven by expected improvements in fundamentals. This finding has implications for asset prices in oil‐exporting countries and highlights the risk that in the event of a sharp unanticipated drop in oil prices, sovereign rating downgrades of oil‐exporting countries could be sharper than the deterioration in their economic fundamentals.     

RISK METRICS AND FINE TUNING OF HIGH‐FREQUENCY TRADING STRATEGIES

We propose risk metrics to assess the performance of high‐frequency (HF) trading strategies that seek to maximize profits from making the realized spread where the holding period is extremely short (fractions of a second, seconds, or at most minutes). The HF trader maximizes expected terminal wealth and is constrained by both capital and the amount of inventory that she can hold at any time. The risk metrics enable the HF trader to fine tune her strategies by trading off different metrics of inventory risk, which also proxy for capital risk, against expected profits. The dynamics of the midprice of the asset are driven by information flows which are impounded in the midprice by market participants who update their quotes in the limit order book. Furthermore, the midprice also exhibits stochastic jumps as a consequence of the arrival of market orders that have an impact on prices which can give rise to market momentum (expected prices to trend up or down). The HF trader's optimal strategy incorporates a buffer to cover adverse selection costs and manages inventories to maximize the expected gains from market momentum.     

International capital flows and development: Financial openness matters

Does capital flow from rich to poor countries? We revisit the Lucas paradox to account for the role of capital account openness. We find that, when accounting for such openness, the prediction of the neoclassical theory is empirically confirmed: among financially open economies, less developed countries tend to experience net capital inflows and more developed countries tend to experience net capital outflows. The results hold also when taking into account private flows, institutions, and numerous controls. We also show that reserve intervention has an effect on the current account only in financially open economies.     

International capital flows

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.     

International portfolios, capital accumulation and foreign assets dynamics

Despite the liberalization of capital flows among OECD countries, equity home bias remains sizable. We depart from the two familiar explanations of equity home bias: transaction costs that impede international diversification, and terms of trade responses to supply shocks that provide risk sharing, so that there is little incentive to hold diversified portfolios. We show that the interaction of the following ingredients generates a realistic equity home bias: capital accumulation and international trade in stocks and bonds. In our model, domestic stocks are used to hedge fluctuations 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 diversification does not depend on strongly countercyclical terms of trade. The model also reproduces the cyclical dynamics of foreign asset positions and of international capital flows.     

Private capital flows, capital controls, and default risk

What has been the effect of the shift in emerging market capital flows toward private sector borrowers? Are emerging market capital flows more efficient? If not, can controls on capital flows improve welfare? This paper shows that the answers depend on the form of default risk. When private loans are enforceable, but there is the risk that the government will default on behalf of all residents, private lending is inefficient and capital controls are potentially Pareto-improving. However, when private agents may individually default, capital flow subsidies are potentially Pareto-improving.     

On the unstable relationship between exchange rates and macroeconomic fundamentals

Survey evidence shows that the relationship between the exchange rate and macro fundamentals is perceived to be highly unstable. We argue that this unstable relationship naturally develops when structural parameters in the economy are unknown. We show that the reduced form relationship between exchange rates and fundamentals is then driven not by the structural parameters themselves, but rather by expectations of these parameters. These expectations can vary significantly over time as a result of perfectly rational “scapegoat” effects. These effects can be expected to hold more broadly in macro and finance beyond the application to exchange rates in this paper.     

A new perspective on “the new rule”of the current account

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.     

The Role of Geography in Financial and Economic Integration: A Comparative Analysis of Foreign Direct Investment,Trade and Portfolio Investment Flows

The objective of this paper is to examine the role of geography in explaining the patterns of financial and economic integration among both developed and developing countries. Using a gravity model, we compare North‐North, North‐South and South‐North FDI, trade and portfolio investment flows to examine how geographical factors influence these bilateral flows. The results indicate that the impact of geography variables on FDI and portfolio are similar to their effect on trade. Geography variables have a statistically significant effect both on FDI and portfolio investment, but FDI is more sensitive to distance. We interpret the negative effect of distance as the existence of information costs in financial flows. Also bilateral FDI, trade and portfolio investment flows react to macroeconomic fundamentals in the same way, however, with different degrees of sensitivity. There are significant differences between North‐North and North‐South flows. Our results find support for the argument that most FDI among industrial countries are horizontal, whereas most FDI investment in developing countries is vertical. The fact that the significance of geographical variables on financial flows still remained even after controlling for the macroeconomic fundamentals, is in contrast with the standard capital market model. The results can, however, be reconciled if geographical factors can proxy for information costs, which may in turn explain why country portfolios are still home‐biased. The significant effect of distance on financial flows may also explain how idiosyn cratic shocks are spread (i.e. contagion) to other countries in the same region. Ultimately, the geographical location of a country may determine its economic and financial integration into the world economy.     

Surges

This paper examines when and why capital sometimes surges to emerging market economies (EMEs). Using data on net capital flows for 56 EMEs over 1980−2011, we find that global factors, including US interest rates and investor risk aversion act as “gatekeepers” that determine when surges of capital to EMEs will occur. Whether a particular EME receives a surge, and the magnitude of that surge, however, depends largely on domestic factors such as its external financing need, capital account openness, and exchange rate regime. Differentiating between surges driven by exceptional behavior of asset flows (repatriation of foreign assets by domestic residents) from those driven by exceptional behavior of liability flows (nonresident investments into the country), shows the latter to be relatively more sensitive to global factors and contagion.     

Corporate Legitimacy and Investment–Cash Flow Sensitivity

This study provides novel evidence of the impact of corporate social responsibility (CSR) on investment sensitivity to cash flows. We posit that CSR affects investment–cash flow sensitivity (ICFS) through information asymmetry and agency costs, commonly viewed as the two channels through which investment responds to the availability of internal cash flows. We find that CSR performance leads to a decrease in ICFS. We further find that ICFS decreases (increases) when CSR strengths (concerns) increase. Finally, we find that the effect of CSR on ICFS is driven by the areas Community, Diversity, and Human Rights. In sum, the findings of this study stress the relevance of CSR—in particular, of CSR activities that extend beyond compliance behavior and reflect what is desired by society—in reducing market frictions and improving firms’ access to financial capital.     

Conceptualising the Role of International Capital Flows for Housing Markets

The existing literature on the role of international capital flows for housing markets can be classified into approaches which focus on the macro relationship between the current account and housing prices on the one hand and studies which specify more specific transmission channels on the other. Building on this literature, we conceptualise the role of international capital flows for housing markets via four central transmission channels. We suggest that by differentiating among these channels, the risk build-up potential of capital flows for housing markets can be evaluated more precisely than in the early literature on global imbalances.     

Global excess liquidity and asset prices in emerging countries: A PVAR approach

The overly accommodating monetary policy is often accused of creating surplus liquidity and bubbles on the asset markets. In particular, it could have contributed to strong capital inflows in emerging countries, which may have had a significant impact on financial stability in these countries, affecting domestic financing conditions and creating a risk of upward pressures on asset prices. We focus in this paper on the impact of global excess liquidity on goods and asset prices for a set of emerging market countries by estimating a panel VAR model. We define first global liquidity and highlight situations of excess liquidity. We then find that excess liquidity at global level has spillover effects on output and price levels in emerging countries. The impact on real estate, commodity and share prices in emerging countries is less clear.     

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.     

ASSET PRICES,OUTPUT AND MONETARY POLICY IN A SMALL OPEN ECONOMY

We formulate a macro‐model of a small open economy in order to investigate the relative performance of rules that respond to asset prices and those that do not. Our model consists of three asset prices: the stock price, the long‐term interest rate and the exchange rate. These asset prices interact with nominal wage and price Phillips curves, a law of motion for the labour share, a dynamic IS curve that describes output adjustment and a Taylor‐type interest rate policy rule. Estimations of the model show that policy rules that respond to asset price movements dominate rules that do not.     

International capital flows,returns and world financial integration

International capital flows have increased dramatically since the 1980s, with much of the increase being due to trade in equity and bond markets. Such developments are often attributed to the increased integration of world financial markets. We present a model that allows us to examine how greater integration in world financial markets affects the behavior of international capital flows and financial returns. Our model predicts that international capital flows are large (in absolute value) and very volatile during the early stages of financial integration when international asset trading is concentrated in bonds. As integration progresses and households gain access to world equity markets, the size and volatility of international bond flows decline. This is the natural outcome of greater risk sharing facilitated by increased integration. This pattern is consistent with declining volatility observed during 1975–2007 period in the G-7 countries. We also find that the equilibrium flows in bonds and stocks predicted by the model are larger than their empirical counterparts, and are largely driven by variations in equity risk premia. The model also predicts that volatility of equity and bond returns decline with integration, again consistent with the data for G-7 economies.     

Financial super-markets: size matters for asset trade

Empirically, demand and market size effects play an important role for international trade in assets and the determination of asset prices. Financial integration decreases the cost of capital, asset prices increase with investors base and market size determines international financial flows. We present a two-country model with an endogenous number of financial assets, where the interaction of a risk diversification motive and market segmentation explains those facts. In our set up, an imperfectly competitive structure of financial markets emerges naturally and provides a new source for home bias in equity holdings. Due to co-ordination failures, the extent of financial market incompleteness is inefficiently high in equilibrium.     

Remittances and the Dutch disease

Using data for El Salvador and Bayesian techniques, we develop and estimate a two-sector dynamic stochastic general equilibrium model to analyze the effects of remittances on emerging market economies. We find that, whether altruistically motivated or otherwise, an increase in remittance flows leads to a decline in labor supply and an increase in consumption demand that is biased toward non-tradables. The higher non-tradable prices serve as incentive for an expansion of that sector, culminating in reallocation of labor away from the tradable sector — a phenomenon known as the Dutch disease. Quantitative results also indicate that remittances improve the welfare of households because they smooth income flows and increase consumption and leisure levels. A BVAR analysis provides results that are consistent with the dynamics of the model.     

The geography of trade in goods and asset holdings

Gravity models have been widely used to describe bilateral trade in goods. Portes and Rey [Portes, R., Rey, H., 2005. The Determinants of Cross-Border Equity Flows. Journal of International Economics, 65(2), 269-296.] applied this framework to cross-border equity flows and found that distance, which proxies information asymmetries, is a surprisingly very large barrier to cross-border asset trade. We adopt a different point of view and explore the complementarity between bilateral trade in goods and bilateral asset holdings in a simultaneous gravity equations framework. Providing different instruments for both endogenous variables, we show that a 10% increase in bilateral trade raises bilateral asset holdings by 6% to 7%. The reverse causality is also significant, albeit smaller. Controlling for trade, the impact of distance on asset holdings is drastically reduced.