我国涉外企业外汇交易风险研究

随着世界经济逐步向全球一体化的方向发展以及我国对WTO相关条款的逐步履行,我国与其他国家的经济往来也变得更加频繁。更为重要的是,我国外汇管理体制改革的进一步深化和外汇市场的发展和完善,使得人民币汇率开始走向市场,汇率变动的频率和范围将大大增强。因此,在这一背景下,本文以科学性和前瞻性为指导原则,通过阐述我国涉外企业面临的外汇交易风险现状和问题,揭示这类企业加强外汇交易风险管理的必要性,在此基础上,来探讨外汇交易风险对我国涉外企业净利润的影响,最终结合我国外汇管理体制改革的实践,提出有效防范和规避外汇交易风险的建议和对策。     

Bond Risk Premia and The Exchange Rate

In emerging market economies, currency appreciation goes hand in hand with compressed sovereign bond spreads, even for local currency sovereign bonds. This yield compression comes from a reduction in the credit risk premium. Crucially, the relevant exchange rate involved in yield compression is the bilateral U.S. dollar exchange rate, not the trade-weighted exchange rate. Our findings highlight endogenous co-movement of bond risk premia and exchange rates through the portfolio choice of global investors who evaluate returns in dollar terms.     

The World Price of Foreign Exchange Risk: Some Synthetic Comments

International asset pricing requires to take into account currency risk. Equilibrium models of the international capital market show that risk premia should be associated with currency risks. This is supported by empirical evidence. This paper reviews the existing theoretical and empirical literature and discusses their practical implications.     

试论我国企业外债风险管理

自1973年布雷顿森林体系崩溃以来,西方各国纷纷放松甚至取消外汇管制和利率管制。汇率和利率频繁而剧烈的波动加剧了企业的经营风险。目前我国大多数企业防范外债风险措施不力,给企业经营和国家外债安全带来隐患。本文试从我国企业外债风险管理普遍存在的问题,借鉴国内外成功经验,论述企业如何进行外债风险管理以达到规避风险的目的,以及国家外汇法规、人民币／外币衍生金融工具和衍生工具会计处理的如何满足企业外债风险管理需求。     

Predictability of Emerging Market Local Currency Bond Risk Premia

This article investigates the source of predictability of emerging market (EM) local currency bond risk premia by using a dynamic factor approach based on a large panel of economic and financial time series. We find strong predictable variation in EM local currency excess bond returns that is associated with macroeconomic activity. We provide evidence that the main predictor variables are the factors based on real economic activity that are highly correlated with measures of industrial and manufacturing production; however, factors based on global financial factors also contain information about the future local currency bond returns. The predictive power of the extracted factors is both statistically significant and economically important. Our research has important implications for policymakers and pension fund managers.     

Exchange Rates and the Conversion of Currency‐Specific Risk Premia

How do the risk factors that drive asset prices influence exchange rates? Are the parameters of asset price processes relevant for specifying exchange rate processes? Most international asset pricing models focus on the analysis of asset returns given exchange rate processes. Little work has been done on the analysis of exchange rates dependent on asset returns. This paper uses an international stochastic discount factor (SDF) framework to analyse the interplay between asset prices and exchange rates. So far, this approach has only been implemented in international term structure models. We find that exchange rates serve to convert currency‐specific discount factors and currency‐specific prices of risk – a result linked to the international arbitrage pricing theory (IAPT). Our empirical investigation of exchange rates and stock markets of four countries presents evidence for the conversion of currency‐specific risk premia by exchange rates.     

Foreign exchange risk and the cross-section of stock returns

We examine the relation between the cross-section of US stock returns and foreign exchange rates during the period from 1973 to 2002. We find that stocks most sensitive to foreign exchange risk (in absolute value) have lower returns than others. This implies a non-linear, negative premium for foreign exchange risk. Sensitivity to foreign exchange generates a cross-sectional spread in stock returns unexplained by existing asset-pricing models. Consequently, we form a zero-investment factor related to foreign exchange-sensitivity and show that it can reduce mean pricing errors for exchange-sensitive portfolios. One possible explanation for our findings includes Johnson's [2004. Forecast dispersion and the cross-section of expected returns. Journal of Finance, 59, 1957–1978] option-theoretic model in which expected returns are decreasing in idiosyncratic cashflow volatility.     

The Effect of Interest Rates on the Value of Corporate Assets and the Risk Premia of Corporate Debt

A growing number of papers have applied option pricing techniques to the valuation of risky debt. This paper deals directly with how a firm's relationship to interest rates affects its debt. A sequential binomial model is used to price the zero-coupon bonds of a firm whose value is related to interest rate changes.The results show that the strength of the relationship between firm value and interest rates (interest-rate risk) can have a significant impact on the value of a firm's debt. The model produces its most powerful results when the volatility of firm value is high and the term structure has a steep (negative or positive) slope; there is no impact when the term structure is flat. Our results indicate that empirical studies of yield spreads may have severe shortcomings if the relationship of firm value to interest rate changes is ignored.     

European Foreign Exchange Risk Exposure

We find that about 13% of our sample of 817 European multinational firms experienced economically significant exposure effects to the Japanese yen, 14% to the US dollar and 22% to the UK pound. Our evidence differs substantially from the US experience and is robust across sub‐sample periods, suggesting that a depreciating (appreciating) euro against foreign currencies has a net negative (positive) impact on European stock returns. Short‐term exposure seems to be relatively well hedged, where considerable evidence of long‐term exposure is found. Firms with weak liquidity positions tend to have smaller exposures. Foreign exposure is found to increase with firm size.     

Modeling Foreign Exchange Risk Premium in Armenia

This paper applies stochastic discount factor methodology to modeling the foreign exchange risk premium in Armenia. We use weekly data on foreign and domestic currency deposits, which coexist in the Armenian banking system. This coexistence implies elimination of the cross-country risks and transaction costs, leaving the pure foreign exchange risk. It is shown that there exists a systematic time-varying risk premium that increases with maturity. Using two-currency affine term structure and generalized autoregressive conditional heteroskedasticity (GARCH)-in-mean models, we find that the central bank's foreign exchange market interventions and ratio-of-deposit volumes significantly affect public expectations about foreign exchange fluctuations. We also find that the foreign exchange risk premium accounts for the largest part of the interest differential. When accounting for economic and institutional differences, our results can be extended to other countries.     

基于现金流模型的我国旅游业外汇风险暴露研究

汇率变动导致的国际市场需求变化会引起旅游业的外汇风险暴露。通过构建基于需求的经营性外汇风险暴露模型（经营性现金流模型）和旅游业加权汇率指数（TTWI）,采用2005—2011年国内上市旅游公司的数据,对我国旅游公司的经营性现金流进行实证分析。研究发现,有很大比例旅游公司的经营性活动暴露于外汇风险之下,其外汇风险暴露形式呈现出非线性、非对称和滞后性的特征。旅游公司在管理外汇风险暴露时,可通过投资于外币资产或使用外币负债在总现金流上分散汇率风险。     

On the Foreign Exchange Risk Premium in Sticky-Price General Equilibrium Models

The properties of the foreign exchange risk premium in general equilibrium models with sticky nominal pricesare examined. In these models, risk premiums arise endogenously because monetary shocks lead to covariationof consumption and exchange rates. In some cases, the risk premiums are much larger than those produced inneoclassical general equilibrium models.     

Foreign Exchange Risk,Hedging, and Tax-Motivated Outbound Income Shifting

Although outbound income shifting to low-tax jurisdictions provides tax savings, it is often accompanied by nontax costs. In this study, I examine whether foreign exchange (FX) risk constrains tax-motivated outbound income shifting by U.S. multinational corporations. My findings indicate that exposure to greater currency volatility is associated with less outbound income shifting, and this effect is stronger for firms with foreign affiliates using foreign functional currencies. I also investigate whether hedging facilitates outbound income shifting. Consistent with hedging lowering costs associated with exchange rate volatility, I find that U.S. firms that use more currency derivatives tend to shift more income to low-tax foreign jurisdictions. Overall, these findings suggest that FX risk is an important cost of outbound income shifting.     

Risk Premia in Foreign Currency Futures

This paper tests the uncorrelatedness of increments of daily foreign currency futures prices and derives implications for risk premia based on a heteroscedasticity-robust variance ratio test. There is evidence suggesting the existence of a time-varying risk premia. Moreover, the results suggest that currency futures price is not an unbiased predictor of currency spot price on corresponding maturity date of currency futures contract. The paper also applies a heteroscedasticity-adjusted Box-Pierce Q test to the same data set for comparison.     

Interpreting Implied Risk-Neutral Densities: The Role of Risk Premia

This paper examines differences between risk-neutral and objective probability densities of future interest rates. The identification and quantification of these differences are important when risk-neutral densities (RNDs), such as option-implied RNDs, are used as indicators of actual beliefs of investors. We employ a multi-factor essentially affine modeling framework applied to German time-series and cross-section term structure data in order to identify both the risk-neutral and the objective term structure dynamics. We find important differences between risk-neutral and objective distributions due to risk premia in bond prices. Moreover, the estimated premia vary over time in a quantitatively significant way, which implies that the differences between the objective and the risk-neutral distributions also vary over time. We therefore conclude that one should be cautious in interpreting RNDs in terms of expectations. The method used in this paper provides an alternative approach to identifying objective probabilities of future interest rates.     

The Impact of the Introduction of the Euro on Foreign Exchange Risk Management in UK Multinational Companies

One of the arguments in favour of the euro is that it will eliminate foreign exchange risk for companies in the euro‐zone. There could also be benefits for companies outside this zone, although their currency risk with the euro remains. This paper considers this, by examining the effect of the euro on the currency risk management of UK multinational companies (MNCs). Using the responses from a questionnaire and interviews we found that the euro, which is being widely used in UK MNCs, is generally favoured due to reductions in exchange uncertainty and costs of managing currency risk. Nonetheless, contrary to what would theoretically be expected, there was no exact relationship in the reduction in hedging activity accompanied by this reduction in risk. The majority of MNCs stated that their hedging activities would remain unchanged. The capacity of MNCs to benefit from reductions in risk and hedging depend on the proportion of non‐UK European trade, the industry sector and the ability to transfer risk down the supply chain. Finally, despite the reductions in currency exposure experienced by the majority of companies the euro will not encourage UK MNCs to expand international trade.     

基于风险选择与投资收益的外汇储备币种结构研究

随着外汇储备规模的不断增加,国家外汇储备投资的风险偏好亦会发生相应的变化。借鉴 J. H.Makin(1971)的方法,构建外汇储备币种结构配置理论模型,讨论在效用最大化的情况下,储备资产投资如何在安全性、流动性和盈利性三原则间进行权衡。假设外汇储备仅投资于美元和欧元两种币种资产,选取2000年初~2014年第三季度的10年期美国国债和欧元区公债季度数据,运用协整分析、格兰杰检验等方法进行的实证研究发现：储备货币在外汇储备中的比重与储备货币收益率及其三阶矩显著正相关,国家外汇储备投资总体而言是风险规避型的。     

跨境关联交易、外汇资金流动与外汇管理

跨境关联交易是涉及境内外关联方之间转移资源或义务的交易活动,它与外汇资金的流动密切相关,对一国的外汇管理具有不可忽视的影响。特别是在当前我国国际收支持续大幅双顺差、外汇储备不断增加的形势下,更需要高度关注跨境关联交易的各种风险。