Fundamentals of corporate currency exposure

I model the relation between corporate currency exposure and fundamental variables like demand elasticities and operating cost structure. The currency location of a firm's operating costs may be in the home currency, the foreign currency, or partially in each. I start with a single-firm setting and extend the results to a competitive setting. The model should help managers better understand the determinants of currency exposure and thus better perform the important tasks of strategic planning and managing enterprise risk.     

CBDC uncertainty: Financial market implications

The current state of the art in the central bank digital currency (CBDC) literature views indexes constructed from digital currency news to be fully informed about CBDC uncertainty and its impact on the financial system. We argue that the hedging behavior of participants in the currency futures market could be more informative than CBDC uncertainty news in the presence of limited risk absorption capacity in futures markets. We show that the hedging factor has a statistically significant effect on financial market risk aversion and measures of uncertainty. The hedging behavior of currency futures market participants is informative of agents' reactions to the news and central bank policies around CBDC. Our results also show that CBDC uncertainty is a significant risk transmitter in the financial system. Hence, this characteristic makes the hedging factor even more important because it can directly impact risk aversion via its moderating effects, which later influence CBDC uncertainty.     

货币错配与经济金融稳定——一个基于本币升值预期的两期微观经济主体行为模型

国内外的研究普遍显示,货币错配是造成金融和经济危机的主要原因之一。但是,目前研究者所构建的模型主要集中于对净外币负债形态的货币错配风险的研究,无法对我国当前所面临的净外币资产形态的货币错配风险的引致渠道作出解释。基于此,本文构建了两期微观经济主体(银行、企业)行为模型。模型表明本币的大幅升值会恶化微观经济主体的资产负债表,在一定情况下会导致一国的金融或经济危机。在此基础上,本文提出了相应的防范净外币资产形态下货币错配风险的政策建议。     

Local risk factors in emerging markets: Are they separately priced?

We provide new evidence on the pricing of local risk factors in emerging stock markets. We investigate whether there is a significant local currency premium together with a domestic market risk premium in equity returns within a partial integration asset pricing model. Given previous evidence on currency risk, we conduct empirical tests in a conditional setting with time-varying prices of risk. Our main results support the hypothesis of a significant exchange risk premium related to the local currency risk. Exchange rate and domestic market risks are priced separately for our sample of seven emerging markets. The empirical evidence also suggests that although statistically significant, local currency risk is on average smaller than domestic market risk but it increases substantially during crises periods, when it can be almost as large as market risk. Disentangling these two factors is thus important in tests of international asset pricing for emerging markets.     

Information and volatility links in the foreign exchange market

We apply the trading model of Fleming et al (1998 ). to a number of currency markets. The model posits that two markets can have common volatility structures as a result of receiving common information and from cross‐hedging activity where a position in one currency is used to hedge risk in a position taken in another. Our results imply that the model is effective in identifying common information flows and volatility spillovers in the currency markets and that some of these effects are lost when simply examining raw correlations. A series of specification tests of the 21 bivariate systems that are examined provides support for the trading model in the foreign exchange context.     

Can hedging tell the full story? Reconciling differences in United States aggregate- and industry-level exchange rate risk premium

While the importance of currency movements to industry competitiveness is theoretically well established, there is little evidence that currency risk impacts US industries. Applying a conditional asset pricing model to 36 US industries, we find that all industries have a significant currency premium that adds about 2.47 percentage points to the cost of equity and accounts for approximately 11.7% of total risk premium in absolute value. Cross-industry variation in the currency premium is explained by foreign income, industry competitiveness, leverage, liquidity, and other industry characteristics, while its time variation is explained by US aggregate foreign trade, monetary policy, growth opportunities, and other macro variables. The results indicate that methodological weakness, not hedging, explains the insignificant industry currency risk premium found in previous work, thus resolving the puzzle that currency risk premium is important at the aggregate stock market level, but not at the industry level.     

Biases in option prices : Evidence from the foreign currency option market

This paper examines a European call model of option pricing over a data set which does not suffer from the early exercise problems that have plagued earlier studies of call options on common stocks. We specifically examine a data set of American call prices on spot foreign exchange for which it is plausible to apply an adjusted version of the Garman-Kohlhagen (1983) and Grabbe (1983) European call option model. We make adjustments for interest rate risk and find that the model is nearly unbiased in the valuation of foreign currency options. We conclude that the Geske-Roll (1984) conjecture about dividend uncertainty creating biases in stock option prices holds analogously in the foreign currency option market. Interest rate differential risk (analogous to risky dividends) thus appears to be an important element in the valuation of foreign currency options.     

Currency risk premia and uncovered interest parity in the International CAPM

Zero-investment uncovered interest parity (UIP) portfolio positions provide perfect factor-mimicking portfolios for currency risk in the International CAPM context. Their returns are the currency risk premia. Since the UIP positions on average provide low returns, the currency risk premia must be low so that currency risk appears not to be priced in an unconditional model. However, previous research has shown that UIP returns are predictable and may be quite substantial conditionally. We use this observation to generate a specific conditional version of the International CAPM. A GMM approach shows that the conditional model performs well, while the unconditional International CAPM is (marginally) rejected. The paper thus argues that previous rejections of the International CAPM stem from the fact that currency risk premia are by nature low over extended periods of time and do not provide evidence against the International CAPM.     

Exchange risk and universal returns: A test of international arbitrage pricing theory

According to the international arbitrage pricing theory (IAPT) posited by Solnik (1983), currency movements affect assets' factor loadings and associated risk premiums. Based on a novel universal return decomposition, we propose an empirical model to test this proposition and perform tests using U.S. stock returns in the period 1975–2008. Our results confirm that currency movements significantly affect the market betas of a large proportion of stocks. Further cross-sectional tests indicate that currency movements affecting the market factor are significantly priced in stock returns. Based on these and other findings, we conclude that Solnik's IAPT is supported. An important implication of our findings is that exchange rate risk can broadly affect stock returns through both factor loading and residual factor channels.     

Dollarization and currency exchange

We use a dual currency money search model to study dollarization. Agents hold portfolios consisting of two currencies, one of which is risky. We use numerical methods to solve for the steady-state distributions of currency portfolios, transaction patterns, and value functions. As risk increases, agents increasingly use the safe currency as a medium of exchange—dollarization occurs. Furthermore, the safe currency trades for multiple units of the risky currency. This type of currency exchange, and the corresponding nominal exchange rate, are often observed in black market or unofficial currency exchange markets in developing countries. Due to decentralized trading, a distribution of exchange rates arises, whose mean and variance change in predictable ways when currency risk increases.     

Exchange risk and universal returns: A test of international arbitrage pricing theory

According to the international arbitrage pricing theory (IAPT) posited by Solnik (1983), currency movements affect assets' factor loadings and associated risk premiums. Based on a novel universal return decomposition, we propose an empirical model to test this proposition and perform tests using U.S. stock returns in the period 1975–2008. Our results confirm that currency movements significantly affect the market betas of a large proportion of stocks. Further cross-sectional tests indicate that currency movements affecting the market factor are significantly priced in stock returns. Based on these and other findings, we conclude that Solnik's IAPT is supported. An important implication of our findings is that exchange rate risk can broadly affect stock returns through both factor loading and residual factor channels.     

Reducing reporting risk: Designating foreign currency forward contracts as cash flow hedges

We present an example that compares the effects on earnings of designating a foreign currency forward contract as either a cash-flow or fair-value hedge of a foreign currency denominated receivable. Entities engaging in exchange transactions not denominated in their functional currency frequently enter into foreign currency forward contracts in order to mitigate their foreign exchange rate risk exposure. The aggregate effect on earnings of the transaction gain or loss on the foreign currency receivable and the gain or loss on the forward contract is known on the date the forward contract is initiated. The effect on each period’s earnings during the term of a forward contract designated as a cash-flow hedge is also known on the date the contract is initiated; whereas the effect on each periods’ earnings from a fair-value hedge cannot be determined until the respective balance sheet dates. Therefore, designating forward contracts as cash-flow hedges may suppress volatility in reported earnings compared to designating forward contracts as fair-value hedges. In addition, the reporting risk (the amount of uncertainty surrounding the pending measure of an item to be reported in the financial statements) is lower when a forward contract is designated as a cash-flow hedge relative to designating it as a fair-value hedge. This suggests foreign currency forward contracts designated as cash-flow hedges are more consistent with the purpose of hedge accounting: to mitigate the effects on earnings of applying different measurement criteria for the hedge and the hedged item.     

An analysis of currency crisis in South Korea

This paper provides empirical evidence on the causes and timing of the 1997 currency crisis in South Korea. A persistent weakness in the economic fundamentals through out much of the pre-crisis period created necessary conditions for the crisis. However, the timing of the currency crisis was determined by a unique combination of an unprecedented increase in default risk faced by the banking system and a decrease in foreign exchange reserves (FXRES) that restricted the ability of the government to bail out. A VAR model identifies two important variables that were crucial in triggering the currency crisis. One is the ratio of dishonored bills (DS) that measures default risk and serves as a proxy for the market value of banks. The other is FXRES that measures the strength of the government's bailout policies. Estimates from a vector autoregressive (VAR) model confirm a strong impact of the lagged changes in the ratio of DS and FXRES on the current changes in the won's value. Immediately before the November crisis, the ratio of DS reached an all-time high while reserves dropped to 1-month imports. These developments significantly contributed to the negative expectations resulting in a massive capital outflow followed by a drastic devaluation of the currency.     

MEASURING THE COST OF CAPITAL IN AN INTERNATIONAL CAPM FRAMEWORK

This paper can be viewed as extending the traditional CAPM framework in two important ways. The first expands the concept of the market portfolio to include international securities. The second extends the definition of systematic risk to include currency risk.
What becomes clear in estimating the cost of capital for an international asset is that both extensions have become necessary if the traditional CAPM is to remain relevant. International markets have become increasingly integrated over the past two decades and so all assets might now be considered "international" and priced accordingly. The inclusion of the currency risk factor is not an ad hoc addition to the CAPM but rather results quite naturally from the fact that foreign returns need to be converted into a domestic currency.
Based on an examination of 18 companies, the article shows that the use of a broader market portfolio will tend to lower the estimated cost of capital for most firms, but in some cases could actually raise it. (In the case of Singapore Airlines, for example, the currency risk factor adds substantially to the cost of capital, while materially reducing it in the case of Nestlé.) Using a simple regression, the authors also attempt to show how the specifics of a particular company—for example, the currencies that are part of their cost/ revenue structure—determine the impact of currency risk on the cost of capital.     

Reinsurers' investment and underwriting portfolios and the exchange rates risk

Summary and concluding remarks The traditional analysis of the performance of large international reinsurers typically concentrates on the effect of exchange rates on profitability of the firm (NRG [9]). The multi-index model enables us to capture and analyze two additional effects: According to the Interest Rates Parity Theorem, the expected rates of return on foreign investments already reflect the expected change in the exchange rate. Therefore, a firm operating in a perfect market would be indifferent to the currency denomination of its financial assets. The firm should consider only the unexpected element in the exchange rate movements, i.e., the exchange risk. The uncertainty in the exchange rate contributes to the variability of the return on each investment and underwriting project. The firm must consider this new element of risk while constructing its investment and insurance portfolios. p ]The model can be used to examine and analyze alternative policies of the firm operating in international markets. For example, the model can be used to examine the “full hedge” policy, in which the insurer has a zero net position in any non-reference currency, or the policy of isolating national insurance markets.     

Optimizing international portfolios with options and forwards

We develop a stochastic programming model to address in a unified manner a number of interrelated decisions in international portfolio management: optimal portfolio diversification and mitigation of market and currency risks. The goal is to control the portfolio’s total risk exposure and attain an effective balance between risk and expected return. By incorporating options and forward contracts in the portfolio optimization model we are able to numerically assess the performance of alternative tactics for mitigating exposure to the primary risks. We find that control of market risk with options has more significant impact on portfolio performance than currency hedging. We demonstrate through extensive empirical tests that incremental benefits, in terms of reducing risk and generating profits, are gained when both the market and currency risks are jointly controlled through appropriate means.     

Adaptive Learning in an Expectational Difference Equation with Several Lags: Selecting among Learnable REE

It is demonstrated that adaptive learning in the least squares sense may be incapable of satisfactorily reducing the number of attainable equilibria in a rational expectations model when focusing on the forward‐solutions to the model. The model examined, as an illustration, is a basic asset pricing model for exchange rate determination that is augmented with technical trading in the currency market in the form of moving averages since it is the most commonly used technique according to questionnaire surveys. The forward‐solutions to such a model are preferable to the backward‐solutions that are normally utilized since announcement effects is an important feature in currency trade. Because of technical trading in foreign exchange, the current exchange rate depends on j _max lags of the exchange rate, meaning that the model has j _max+1 rational expectations equilibria, where several of them are adaptively learnable in the least squares sense. However, since past exchange rates should not affect the current exchange rate when technical trading is absent, it is possible to single out a unique equilibrium among the adaptively learnable equilibria that is economically meaningful. It is worth noting that the model examined can also be viewed as a model for stock price determination in which the forward‐solutions to the model are preferable to the backward‐solutions since the importance of announcement effects is a common characteristic for currency and stock markets.     

Time-varying foreign-exchange risk and central bank intervention: estimating profits from intervention and speculation

Failure to risk-adjust estimates of profits, from central-bank foreign exchange intervention or from private speculation, can have large effects on the estimated profits, including changing signs. Many choices arise in deciding how to adjust profits for risk. The time period over which a market model is fit has mixed effects on calendar-year profits; variations in profits across calendar years is much more important than the period over which the market model is fit. In some cases, but not in all, results are sensitive to whether a US stock market index is used or a world market index. For non-US central banks or private speculators, the relevant market index might be denominated in USD, but alternatively might be denominated in a foreign currency. For the Swedish central bank, estimated profits decline importantly if an index measured in USD is used instead of an index measured in SEK. In estimating market models where beta is conditioned on some measure of intervention, likely candidates are intervention or cumulative intervention; the first has an effect for one or a few days, the second has long-term effects. Estimates show that the choice can make an important difference, though the effects are not all one way.     

Asymmetric currency exposure and currency risk pricing

Whether stock returns are linked to currency movements and whether currency risk is priced in a domestic context are less conclusive and thus still subject to a great debate. Based on a different approach, this paper attempts to provide new empirical evidence on these two inter-related issues, which are critical to investors and corporate risk management. In particular, this paper not only explores the possibility of asymmetric currency exposure that may explain why prior studies, which focus exclusively on linear exposure, have difficulty in detecting it, but also tests whether this asymmetric currency exposure is priced. The results show strong evidence of asymmetric currency exposure and currency risk pricing, suggesting that both asymmetry and conditional heteroskedasticity play important roles in testing currency exposure and its price.     

Sovereign risk,public debt,dollarization, and the output effects of fiscal austerity

The goal of this paper is to investigate effects of fiscal policy on output as a response to an external shock at different levels and currency compositions of public debt. Central to our analysis is the mutual relationship between sovereign risk and public debt on the one hand, and the linkage between sovereign risk and private credit spreads on the other. We show that fiscal austerity is conducive to real economic activity when initial government debt is high, its foreign currency share is important, and the link between sovereign and corporate spreads is strong.