Impact of commodity prices on exchange rates in commodity-exporting countries

This paper studies the link between real exchange rates and commodity prices, over the period 1993M1–2018M12, for commodity-exporting countries by analysing countries individually and considering the possibility of structural breaks. Our results suggest that: (a) the movements in the price of the main commodity (i.e., the one whose share is at least 20% of total commodity export) affect significantly to the real exchange rate; (b) the sign of the effect of commodity prices on real exchange rate is not clearly positive (as was found by earlier analyses using panel data), but it depends on the country considered; and (c) the negative effects of the possession of natural resources observed in the past decades seem not to be now overwhelming.     

Classifying and modeling nonlinearity in commodity prices using Incoterms

ABSTRACT

This paper proposes a novel approach of classifying and modeling the nonlinear behavior of commodity prices using regime-switching models with exogenous transition variables. The approach rests on using the International Commercial Terms (Incoterms), also known as border prices, to classify commodities in groups that tend to display similar dynamics. The suggested border price classification is useful in identifying the key exogenous driving variables in each group. In particular, the classification suggests that inflation and oil price are the best transition candidates that are capable of capturing the nonlinear dynamics of free on board (FOB) and cost insurance and freight (CIF) prices respectively. Our statistical linearity tests and estimation results confirm this prediction and highlight the importance of the suggested border price classification in improving our understanding of the behavior of commodity prices.     

COVID-19 and tail risk contagion across commodity futures markets

This paper examines the impact of COVID-19 on tail risk contagion across commodity futures markets using a copula-based network method. We document a significant increase in the lower and upper tail contagiousness of commodities following the COVID-19 outbreak. Contagion shows an obvious clustering characteristic, that is, there is higher tail risk connectedness between commodities in the same category. Agricultural commodities are significantly less contagious than metals and energy commodities; soft commodities in particular can offer investors significant diversification benefits. There are several hub commodities in the contagion network, chief among them copper, which are good transmitters of shocks and should be treated with caution by investors and regulators. Although tail risk and contagiousness of individual commodities increase together during the pandemic, we find a negative cross-sectional relationship between tail risk and contagiousness, that is, commodities with high tail risk are not necessarily highly contagious and may even be less so.     

Time-series momentum in China's commodity futures market

This study examines the time-series momentum in China's commodity futures market. We find that a time-series momentum strategy outperforms classical passive long and cross-sectional momentum strategies in terms of the Sharpe ratio, risk-adjusted excess returns, and cumulative returns. The time-series momentum strategy with a 1-month look-back period and a 1-month holding period exhibits the best performance. We observe clear time-series momentum patterns and find that the time-series momentum strategy is effective in the Chinese commodity futures market. However, the momentum lasts for less time in China than in the United States because China's futures market seems to have a greater number of speculative investors.     

Liquidity shocks,commodity financialization,and market comovements

We explore whether and how liquidity factors influence risk transfers between commodity and stock markets using a composite liquidity index and five different types of liquidity measures. We find that liquidity shocks, including both funding liquidity and market liquidity, are positively associated with comovements between commodity and stock markets after 2000, although the relationship is insignificant before 2000. The structural change indicates that financialization creates a role for adverse liquidity shocks to increase cross-market correlations. Further evidence shows that the effect of liquidity on cross-market correlations is state-dependent and intensifies when liquidity conditions deteriorate and asset returns sustain substantial declines. Our findings are not explained by business cycles.     

我国农产品市场价格变动背后的生产成本效应--以粮食为例

以粮食为主要研究对象,探讨我国农产品市场价格变化过程中存在的生产成本效应。在具体方法上,将成本因素划分为生产成本、供应成本和机会成本三类,选取有关变量指标,并选择小麦、稻谷和玉米三类代表性的粮食,以1988年~2017年全国数据为样本进行实证检验。结果发现:我国粮食价格上涨背后的成本效应非常显著,农业生产资料价格、劳动力成本、农产品物流成本、劳动力机会成本等是引起我国粮食价格上涨的重要成本因素;此外,粮食区域供应成本是小麦和玉米价格上涨的一个推手,但是对稻谷价格的推动作用却不显著。     

Exchange rate volatility and Japan–U.S. commodity trade: An asymmetry analysis

Exchange rate volatility is said to affect trade flows in either direction. When increased volatility is separated from decreased volatility, asymmetric analysis reveals even more support for the fact that both increased volatility and decreased volatility affect trade flows in either direction. We add to this new literature by considering 57 industries that trade between Japan and the US. In addition to providing evidence of asymmetric response of their trade flows to a measure of exchange rate volatility, our approach identifies industries that could benefit from increased exchange rate volatility and those that could be hurt. Similarly, we identify industries that could benefit from decreased volatility and those that could be hurt. The overall conclusion is the adverse effects of dollar–yen volatility on the trade between the two countries.     

Distress and default contagion in financial networks

We develop a new model for solvency contagion that can be used to quantify systemic risk in stress tests of financial networks. In contrast to many existing models, it allows for the spread of contagion already before the point of default and hence can account for contagion due to distress and mark‐to‐market losses. We derive general ordering results for outcome measures of stress tests that enable us to compare different contagion mechanisms. We use these results to study the sensitivity of the new contagion mechanism with respect to its model parameters and to compare it to existing models in the literature. When applying the new model to data from the European Banking Authority, we find that the risk from distress contagion is strongly dependent on the anticipated recovery rate. For low recovery rates, the high additional losses caused by bankruptcy dominate the overall stress test results. For high recovery rates, however, we observe a strong sensitivity of the stress test outcomes with respect to the model parameters determining the magnitude of distress contagion.     

人民币外汇市场压力指数变动及压力释放效果研究

根据汇率变动的压力来源,引入包括名义汇率、外汇储备、国际利差、通胀水平差、远期升贴水、双边贸易差额等在内的六个因素构建外汇市场压力指数,综合分析2000年1月至2008年6月人民币汇率变动的压力来源。结果显示:人民币的升值压力除了在汇改之初小幅下降外,在其他考察时间段内基本都表现出明显的升值趋势,且各个阶段的汇率走势和压力源贡献分解也体现出差异化的特点。     

Stock prices and exchange rate dynamics in Nigeria: An asymmetric perspective

This paper investigates the asymmetric effect of exchange rate changes on stock prices in Nigeria. Using the nonlinear ARDL framework and monthly data from 2000:1 to 2016:12, the nominal exchange rate is separated into currency depreciation and appreciation through a partial sum decomposition process. Asymmetry is examined both in the long-run relationship and short-run error correction mechanism. The results show that the effects of exchange rate changes on stock prices is asymmetric both in the short- and long-run. That is, stock prices react in different magnitude to depreciation and appreciation. However, currency depreciation has a strong pass-through effect on stock prices than appreciation in the long-run. In the absence of asymmetry, exchange rate has only short-run effect on stock prices. This implies that the symmetry assumption underestimates the impact of exchange rate changes on stock prices in Nigeria.     

Currency Prices, the Nominal Exchange Rate, and Security Prices in a Two‐Country Dynamic Monetary Equilibrium

This paper examines a continuous‐time two‐country dynamic monetary equilibrium in which countries with possibly heterogeneous tastes and endowments hold their own money for the purpose of transaction services formulated via money in the utility function. Given a price system, no‐arbitrage pricing results are provided for the price of each money and the nominal exchange rate. Characterizations are provided for equilibrium prices for general time‐additive preferences and non‐Markovian exogenous processes. Under a Markovian structure of model primitives, the currency prices are shown to solve a bivariate system of partial differential equations. Assuming that each country is endowed with heterogeneous separable power utility and the exogenous quantities all follow geometric Brownian motions, an equilibrium is shown to exist and additional characterization is provided. A further example of nonseparable Cobb–Douglas preferences is investigated. The additional features over the customary environment of homogeneous logarithmic preferences are emphasized.     

An asymmetric analysis of the J‐curve effect in the commodity trade between China and the US

This paper follows a non‐linear ARDL error‐correction approach to examine the presence of the J‐curve in the commodity‐level trade between the United States and China. The analysis disaggregates the US–China trade flows by commodities and separately examines the trade balance responses of 97 commodities to the changes in the real yuan–US$ exchange rates. The analysis at the commodity level alleviates potential aggregation bias that is present in earlier studies offering little evidence for long‐run asymmetric effects of exchange rate on the China–US trade balance. We find strong support for short‐run asymmetric effects in the case of two‐third of the commodities, whereas significant long‐run asymmetric effects are present in the case of one‐third of the commodities including those commodities which command large shares in the China–US trade.     

Volatility Spillovers and the Risk-Return Relation Between Stock and Foreign Exchange Markets in Brazil

We examine the evidence of mean and volatility spillovers between stock and foreign exchange markets in Brazil with multivariate GARCH models and nonlinear Granger causality tests. We also use a multivariate GARCH-in-mean model to assess the relationship between risk and return in these markets. The results indicate that the stock market leads the foreign exchange market in price formation and that nonlinear Granger causalities from the exchange market to the stock market do occur. Part of these nonlinear causalities are explained by volatility spillovers. We show that exchange rate volatility affects not only stock market volatility but also stock returns.     

Exchange rate volatility in Latin American and the Caribbean region: Evidence from 1985 to 2005

Using a total of 28 Latin American and Caribbean countries, this study finds a negative relationship between trade and exchange rate volatility. The econometric tool for this specific analysis is the widely used gravity model, in a panel data context. A similar condition is detected between inbound foreign direct investment and exchange rate volatility. The results of the study support the hypothesis that significant exchange rate volatility has a negative impact on the economies of the region and that achieving exchange rate stability should be a goal of policy makers in the context of Latin America and the Caribbean.     

外汇市场压力、国际资本流动与国内货币市场均衡——基于中国数据的实证研究

本文首先建立外汇市场压力、国际资本流动与国内货币市场均衡状况的理论模型,分析了三者之间的理论关系。进而通过LS、ECM、Johansen协整和State-Space等方法估算出1996年1月至2009年9月的外汇市场压力、国内货币市场均衡状况和国际资本净流动,然后采用VAR模型分析了三者之间的动态关系。最后得出结论如下:国际资本净流入时,我国外汇市场压力为正(人民币升值压力),同时我国货币市场会出现短暂的超额供给。     

The interplay between home and host country institutions in an emerging market context: Private equity in Latin America

This study examines how the interplay between home and host country regulatory institutions affects the investment strategy of private equity (PE) firms in an emerging market context. To answer this question, we consider three different mechanisms: (1) the institutional hazard avoidance effect, (2) the institutional escapism effect, and (3) the dysfunctional institutions effect. Contrary to conventional wisdom, we argue that regulatory institutional differences between home and host countries can sometimes have a positive rather than a negative effect on investment likelihood. Our findings show that when a host emerging market has a strong regulatory institutional system relative to other emerging markets, it is more likely that this country will attract PE investments from firms based in home countries with very strong and very weak institutional systems. The empirical analyses, based on a polynomial specification and a dataset covering more than 300 PE firms that made close to 1500 investment transactions in Latin America during 1996–2011, are consistent with our main theoretical arguments.     

中国亿元商品交易市场发展的特点及其成因

改革开放以来,我国的商品交易市场在经历了数量增长和规模扩张之后,逐渐实现了从量的变化向质的飞跃,从外延扩张到内涵提升的转变。亿元商品交易市场的成交额占全部商品交易市场总成交额的比重逐年上升,其在商品交易市场体系中的地位和作用也日益显现,辐射力不断增强,已成为我国城乡经济发展的重要推动力。     

Risk,Uncertainty and Exchange Rate Behavior in South Africa

This study investigates the role of market sentiment and foreign policy uncertainty in explaining rand price fluctuations using monthly data from 1995M2 to 2017M8. Empirical results from the pair copula analysis indicate no dependence between foreign policy uncertainties and rand returns when market sentiment is controlled for. Furthermore, change in market sentiment seems to drive fluctuations in rand exchange rate suggesting that exchange rate behavior is indeed unpredictable as market sentiment captures both risk and uncertainty. These results are robust across pre- and post-recent financial crisis periods; hence confirming the ability of pair copula to model extreme events.     

Reducing distributor opportunism in the export market: Effects of monitoring mechanisms, norm-based information exchange, and market orientation

As monitoring mechanisms are critical to exporter–distributor relationships, the effectiveness of different types of monitoring mechanisms remains an important issue. Our study goes beyond the separate effects of monitoring mechanisms on opportunism, and tests the moderating effects of market orientation (MO) and norm-based information exchange on the monitoring mechanism–opportunism relationship. Based on survey data of 160 export ventures in China, we find that process control increases distributor opportunism, while norm-based information exchange and MO decrease it. Moreover, at high levels of norm-based information exchange and MO, the impact of process control on opportunism turns from positive to negative.     

Real exchange rate shocks and new product margins in the export market

This study examines the impact of industry real exchange rate (RER) shocks on plant and product exports using a comprehensive dataset for South Korea from 1990 to 1996. We find that RER changes have heterogeneous effects on real exports of existing exporters in terms of their productivity, and the positive RER depreciation effect on exports is more pronounced for less productive plants. At a product level, we find new evidence that a weak home currency prompts exporters to introduce new products to the export market, especially more remarkable for low-productivity plants. In contrast, a strong home currency leads to product exit with less significance.