A re-examination of international inflation convergence over the modern float

Crowder [Crowder, W.J., 1996. The international convergence of inflation rates during fixed and floating exchange rate regimes. Journal of International Money and Finance 15, 551–576] provided evidence that inflation rates among the seven largest industrialized economies shared one common stochastic trend in the post-war era, over both the fixed and floating exchange rate regimes. The convergence of inflation rates over the floating exchange rate period implies less insulation for the domestic economy from idiosyncratic shocks in the rest of the world, thereby reducing the attractiveness of flexible exchange rates. Several subsequent studies have found much less convergence than suggested in Crowder's original results, suggesting a higher degree of insulation of flexible exchange rates. In this study, we revisit the question of the degree of inflation convergence among the G-7 nations over the modern float. Employing a host of diagnostic methods, we conclude that there is in fact one common trend underlying the inflation rates of the G-7 nations. Consistent with Crowder [Crowder, W.J., 1996. The international convergence of inflation rates during fixed and floating exchange rate regimes. Journal of International Money and Finance 15, 551–576], we cannot attribute the source of the underlying common trend to any one particular country.     

The information content of the exchange rate and the stability of real output under alternative exchange-rate regimes

When the exchange rate is flexible, and thus responds to market forces, it provides agents with useful information, while when it is fixed (by a feedback rule) it does not. The implications of this asymmetry for the stability of real output under the two regimes is discussed. It is shown that whenever shocks are predominantly of one variety, or when domestic monetary shocks accompanied by one real shock, a flexible exchange rate does a better job of stabilizing real output than does a fixed exchange rate. These results undermine arguments favoring fixed exchange rates because they ‘discipline’ monetary policy. In addition, it is demonstrated that managed floating rules and exchange rate feedback rules are irrelevant for the distribution of real output.     

International transmission of inflation under alternative exchange rate regimes: Empirical evidence and its implications

This is a study of the transmission pattern of inflation under alternative exchange rate regimes, fixed and flexible, among the Group of Seven (G-7) countries and their subsets, including four members of the European Union (EU) and two countries from North America. Our key empirical findings are as follows. The price levels of several countries that we found move together as a cointegrated system, forming an equilibrium relationship under both fixed and flexible exchange regimes. Second, the speed of adjustment estimates show that the transmission of inflationary disturbances across countries is less pronounced under the flexible exchange rate regime than under the fixed exchange rate regime. Third, the US was found to be the main producer of inflationary innovations among G-7 countries, whereas the UK was found to be the main producer of inflationary innovations among the EU countries, regardless of exchange rate regime.     

An Examination of the Short-Term and Long-Term Behavior of Foreign Exchange Rates

This study employs the heteroskedasticity-robust variance ratio test and the modified rescaled range analysis to examine the short-term and long-term behavior of foreign exchange rates. The empirical results suggest that four of the five weekly nominal exchange rates examined exhibit short-term dependence. Further, there is evidence of long-term dependence in the nominal exchange rate series. The results also indicate that the real exchange rates generally exhibit short-term independence, and the lack of strong evidence in favor of long-term dependence in real exchange rates indicates that the purchasing power parity may not hold in the long run.     

Implicit expectiles and measures of implied volatility

It is well known that the normal distribution is inadequate in capturing the skewed and heavy-tailed behaviour of exchange rate returns. To this end, various flexible distributions that are capable of modelling the asymmetric and tailed behaviour of returns have been proposed. In this paper, we investigate the performance of the generalized lambda distribution (GLD) to capture the skewed and leptokurtic behaviour of exchange rate returns. We do this by conducting a comprehensive numerical study to compare the performance of the GLD against the performances of the skewed t distribution, the unbounded Johnson family of distributions and the normal inverse Gaussian (NIG) distribution. Our results suggest that in terms of the value-at-risk and expected shortfall, the GLD shows at least similar performance to the skewed t distribution and the NIG distribution. Considering the ease in GLD’s use for random variate generation in Monte Carlo simulations, we conclude that the GLD can be a good alternative in various financial applications where modelling of the heavy tail behaviour is critical.     

Valuing foreign exchange rate derivatives with a bounded exchange process

Foreign exchange rates have been subjected to periods of tighter or looser controls as various political and economic forces have waxed and waned. When currencies were backed by gold there were fixed exchange rates. In 1973 floating exchange rates were adopted though many countries did try to keep their currency values within certain ranges. More recently the European Economic Community formalized this practice. Free-floating exchange rates might be well characterized by the lognormal distribution which is standard in option pricing. However, this is probably a poor approximation for exchange rates which are kept within some range by the actions of one or both governments or central banks. This paper develops a model which can be used to value options and other derivative contracts when the underlying exchange rate is bounded in a fixed range (a, b). Methods for pricing both European and American style options are developed.The author would like to thank Ken French and Geert Rouwenhorst for their comments and suggestions.     

A macroeconomic model with asset equilibrium for an open economy

This article is concerned with the problem of the effects of monetary policy in an open economy in the long run. In order to analyze this problem under assumptions that are more suitable for long-run analysis than those of the usual IS-LM model a new model has been constructed with flexible prices, fixed exchange rates and a flexible capital stock. Within this framework it is found that the effectiveness of monetary policy crucially depends upon the degree of asset and goods arbitrage across national borders. Sufficient asset or goods arbitrage are both sufficient conditions to yield a zero effect of monetary policy except on foreign exchange reserves.     

Exchange rate regimes and FDI in developing countries: A propensity score matching approach

Theory suggests that regimes of relatively fixed exchange rates encourage inward foreign direct investment (FDI) relative to regimes of more flexible exchange rates. We use propensity score matching (PSM) to investigate the relationship between the exchange rate regimes of 70 developing countries and FDI into such countries using de facto regime classifications. We include a large number of variables in the logit equation that estimates the propensity score, the probability of regime choice. We also use general-to-specific modeling to get alternative, parsimonious versions. Based on four matching procedures, the average treatment effects suggest, with overall modest statistical significance, that relatively fixed de facto regimes do encourage FDI compared with relatively floating regimes. In addition, the estimated effects are sometimes economically large.     

Exchange rate dynamics in anticipation of time-contingent regime switching: modelling the effects of a possible delay

The procedure of fixing a currently floating exchange rate at a given (and publicly announced) future date has a broad range of applications. Based on a (continuous-time) monetary exchange rate model with flexible prices, this paper analyzes exchange rate dynamics during the transition from floating to fixed rates in a situation in which market participants are uncertain about adherence to the fixing date and in which they take account of a possible delay in the regime switch. The closed-form solutions derived here allow us to quantify announcement effects as well as effects on the exchange rate variance caused by news that significantly changes the market's assessment of uncertainty.     

Fiscal Discipline and Exchange Rate Arrangements: Evidence from the Caribbean

This paper assesses the nature of fiscal discipline under alternative exchange rate regimes. First, it shows that fiscal agencies under a currency union with a fixed exchange rate can have a larger incentive to overspend or "free ride" than those under other exchange rate regimes, owing to the agencies' ability to spread the costs of overspending in inflation tax across both time, given the fixed exchange rate, and space, given the currency union. In contrast, such free-riding behavior does not arise under flexible regimes owing to the immediate inflationary impact of spending. Next, empirically, fiscal stances in countries with fixed pegs and currency union regimes demonstrate greater free-riding behavior than do countries with more flexible regimes in fifteen Caribbean countries from 1983 to 2004.     

Exchange rate regimes, banking and the non-tradable sector

This paper presents a small-open-economy, two-good version of the Diamond and Dybvig model with cash constraints to analyze the implications on banking of different exchange rate regimes and monetary policies. I show that fixed exchange rates with a Central Bank providing liquidity in local currency imply Pareto efficiency, with conditions for a run equilibrium stronger than in the literature. In a flexible exchange rate regime, multiple equilibria may not be eliminated. In particular, for very a expansive monetary policy there exists an equilibrium where a fraction of patient consumers purchases dollars in the interim period, which constitutes a partial currency run. A dollarized banking system without international short-run credit may also implement the efficient allocation under certain conditions.     

Interest Rates and Exchange Rate Movements: Analyzing Short-term Investments in Long-term Bonds

Tests of the uncovered interest rate parity (UIP) are subject to various data problems when long-term interest rates are applied: due to the long investment period, time intervals for measuring exchange rate movements are usually overlapping and therefore not independent. This shortfall can be prevented by considering short-term investments in long-term bonds instead of investments to maturity. This article analyzes the explanatory power of long-term interest rates with regard to 1- and 3-month exchange rate movements by relating return differences from 1- and 3-month investments in domestic and foreign 10-year government bonds to nine different exchange rates. From a Swiss perspective, there is only weak support for an interrelation between return differences and the corresponding exchange rate movements, whereas from a US perspective, the resulting estimates are much more in line with UIP.The reader may for instance consider Engel (1996) and Froot and Thaler (1990).     

Sustainability of macroeconomic policies in selected MENA countries: Post financial and debt crises

In the wake of the recent financial and debt crises, the conduct of macroeconomic policies in the emerging MENA economies has recently become critical in determining those countries future economic situation, due to the accumulation since the early 1990s of a sizable level of external debt, and the pursuit by some countries of a fixed exchange rate regime. Using time series econometric models, this study assesses the sustainability of macroeconomic policies in a selected sample of 4 MENA countries. The empirical results point to sustainable fiscal and exchange rate policies in Tunisia and Morocco, and unsustainable external debt and exchange rate policies in Egypt and Jordan. While Egypt has recently moved to a flexible exchange rate regime, if Jordan still opts for maintaining a fixed exchange rate arrangement, it will have to implement crisis-prevention measures, namely by exercising fiscal discipline, and managing properly its external debt and foreign reserves.     

Comparative statics of a two-country capital/money model

This paper presents a two country version of James Tobin's capital/money model, with international trade and capital transactions. The model is used to derive comparative static properties of financial market equilibrium under four alternative regimes: fixed or flexible exchange rates combined with a pegged foreign government interest rate or a fixed supply of foreign government debt. The comparative static results derived by Tobin for a closed economy, and by William Branson for a small country with an open economy, are preserved in the model developed here only in the case where both the exchange rate and the foreign interest rate are pegged. The reasons for this are explored.     

Multivariate extremes for models with constant conditional correlations

Models with constant conditional correlations are versatile tools for describing the behavior of multivariate time series of financial returns. Mathematically speaking, they are solutions of a special class of stochastic recurrence equations (SRE). The extremal behavior of general solutions of SRE has been studied in detail by Kesten [Kesten, H., 1973. Random difference equations and renewal theory for products of random matrices. Acta Mathematica 131, 207–248] and Perfekt [Perfekt, R., 1997. Extreme value theory for a class of Markov chains with values in ^d. Advances in Applied Probability 29, 138–164]. The central concept to understanding the joint extremal behavior of such multivariate time series is the multivariate regular variation spectral measure. In this paper, we propose an estimator for the spectral measure associated with solutions of SRE and prove its consistency. Our estimator is the tail empirical measure of the multivariate time series. Successful use of the estimator depends on a good choice of k, the number of upper order statistics contributing to the empirical measure. We introduce a new criteria for the choice of k based on a scaling property of the spectral measure. We investigate the performance of our estimation technique on exchange rate time series from HFDF96 data set. The estimated spectral measure is used to calculate probabilities of joint extreme returns and probabilities of large movements in an exchange rate conditional on the occurrence of extreme returns in another exchange rate. We find a high level of dependence between the extreme movements of most of the currencies in the EU. We also investigate the changes in the level of dependence between the extreme returns of pairs of currencies as the sampling frequency decreases. When at least one return is extreme, a strong dependence between the components is present already at the 4-hour level for most of the European currencies.     

International risk sharing and the choice of exchange-rate regime

This paper examines the argument that the fixed exchange-rate regime should be preferred to the flexible rate regime because the former allows risk sharing across countries while the latter does not. The analysis is performed in a two-country overlapping generations model, where markets are incomplete under all exchange regimes. It is shown that risks are pooled across countries when the equilibrium exchange rate is constant across states of nature, which arises under the fixed rate regime with or without capital restriction, and under the flexible rate regime without capital restriction. Risks are not pooled across countries when the equilibrium exchange rate is different across states of nature, which arises under the flexible rate regime with capital restriction. But in a model with incomplete markets, the ability to share risk across countries in the regimes with constant exchange rates does not necessarily lead to higher welfare than the inability to share risk in the regime with random exchange rates.     

Pricing Participating Inflation Retirement Funds Through Option Modeling and Copulas

Abstract

Pension plans and life insurances offering minimum performance guarantees are very common worldwide. In the Brazilian market, the customers of a common type of defined contribution plan have the right to receive, over their savings, the positive difference between the return of a specified investment fund, usually a fixed income fund, and the minimum guaranteed rate, commonly defined as the composition of a fixed interest rate and a floating inflation rate. This instrument can be characterized as an option to exchange one asset, the minimum guaranteed rate, for another, the return of the specified investment fund. In this paper we provide a closed formula to evaluate this liability that depends on two stochastic rates assuming bivariate normality. We also explore the use of copulas for the modeling of the dependence structure and price the options using Monte Carlo simulation to compare the effects of the copula specification in their values. An application with real data is provided. The model makes use of a one-factor Vasicek framework for the term structures of interest rate and inflation rate.     

Choice of exchange rate system and macroeconomic volatility of three Asian emerging economies

This study highlights the importance of choice of exchange rate system to macroeconomic stability of small-open emerging economies based on the outcomes of the recent exchange rate regime switches of three Asian countries – Indonesia, Malaysia, and Thailand. These countries have high similarities in their economic structures, but have reacted very differently in mitigating the economic distortion of the 1997 financial crisis, in particular in the adoption of exchange rate system. The empirical results of this study show that the amplified instability of macro-variables in Thailand and Indonesia, which was due to the crisis, were not stabilized by switching the exchange rate system to a flexible regime. The volatilities, however, were effectively stabilized after the countries made the second switch – from the independent float to the managed float with no pre-announcement. For Malaysia, a switch from the managed float to the pegged system successfully reduced the volatilities. The exchange rate misalignments of the countries, except Indonesia, were also reduced when the countries switched from a flexible to a more fixed managed float system. These empirical findings thus strongly support central banks of small-open emerging economies to adopt a more fixed, rather than a more flexible system. However, the managed float system needs to couple with efficient management to ensure a smooth and stable regime.     

人民币汇率传递机制研究与启示

汇率传递是指汇率波动通过直接或间接的渠道影响国内价格，影响汇率传递的因素主要包括外贸依存度、市场竞争和市场创新等方面。我国汇率传递效应受市场不完全竞争的影响，其汇率传递效应亦不完全。可以通过企业加速产品结构调整和技术创新，适应汇率弹性增强的需要；加快产业升级与结构调整；并继续实行富有弹性的汇率制度。     

Flexible inflation targets,forex interventions and exchange rate volatility in emerging countries

Emerging economies with inflation targets (IT) face a dilemma between fulfilling the theoretical conditions of “strict IT”, which imply a fully flexible exchange rate, or applying a “flexible IT”, which entails a de facto managed-floating exchange rate with foreign exchange (forex) interventions to moderate exchange rate volatility. Using a panel data model for 37 countries we find that, although IT lead to higher exchange rate instability than alternative regimes, forex interventions in some IT countries have been more effective to lower volatility than in non-IT countries, which may justify the use of “flexible IT” by policymakers.