大宗商品价格变化与汇率波动的动态关系——兼论中国外汇储备结构调整

2008年全球金融危机以来,大宗商品价格变化与一些大宗商品输出国货币汇率的波动态势较为一致。这是偶然巧合还是必然联系?本文利用VEC向量误差修正模型等对相关数据进行了实证分析后表明,2008年以来,大宗商品价格上升对澳大利亚、加拿大等大宗商品输出国货币汇率有正面推动作用。基于此,本文建议:为降低外汇储备风险,中国需要适时增加大宗商品输出国货币和资产在外汇储备中的比重,同时相应减持美元和美元资产。     

中国银行间同业拆借市场信息国际化的检验

本文运用EGARCH模型，检验伦敦银行间同业拆借市场和中国银行间同业拆借市场之间拆借利率波动溢出的流星雨假定。结果表明，来自伦敦银行间同业拆借市场的流星雨对中国银行间同业拆借市场利率波动具有显著性影响。     

Impact of exchange-rate variability on commodity trade between U.S. and Germany

Previous studies that looked at the impact of exchange rate volatility on trade flows used aggregate trade data between one country and rest of the world or between two countries. More recent studies, however, have expanded the literature by using a highly disaggregated commodity level data between two countries. In this paper we consider the sensitivity of 131 industries that trade between U.S. and Germany. We find that exports and imports of a majority of the industries react to the real dollar–euro volatility in the short run. The short-run effects, however, last into the long run only in almost 50 % of the industries. Among these industries, while almost all U.S. exporting industries are affected favorably by exchange rate volatility, a majority of the U.S. importing industries are affected adversely.     

The effects of Japanese foreign exchange market interventions on the yen/U.S. dollar exchange rate volatility

In previous empirical work, the link between the interventions of the Bank of Japan (BoJ) and exchange rate volatility has mainly been analyzed by using data on press reports of BoJ interventions. We use official intervention data for the period 1993–2000 that were released only recently by the BoJ. We find a positive link between the interventions of the BoJ and the volatility of the yen/U.S. dollar exchange rate. We also find that those BoJ interventions that were not reported in the financial press were positively correlated with exchange rate volatility.     

Improving GARCH volatility forecasts with regime-switching GARCH

Many researchers use GARCH models to generate volatility forecasts. Using data on three major U.S. dollar exchange rates we show that such forecasts are too high in volatile periods. We argue that this is due to the high persistence of shocks in GARCH forecasts. To obtain more flexibility regarding volatility persistence, this paper generalizes the GARCH model by distinguishing two regimes with different volatility levels; GARCH effects are allowed within each regime. The resulting Markov regime-switching GARCH model improves on existing variants, for instance by making multi-period-ahead volatility forecasting a convenient recursive procedure. The empirical analysis demonstrates that the model resolves the problem with the high single-regime GARCH forecasts and that it yields significantly better out-of-sample volatility forecasts. First Version Received: November 2000/Final Version Received: August 2001     

美元没落?——美元利益格局及其发展趋势

美国凭借美元的世界储备货币地位获得了大量利益。这种利益由美元利益格局来保障,通过创造各国对美元的需求来实现,同时,作为核心环节的美元计价机制、权力框架以及有利的外部环境也是该格局的必要支柱。当前,美元面临着强有力的竞争和挑战,美国自身也在调整其战略,以期获得更为持续而长久的利益,由于美元利益格局依然存在,美元地位的改变将是一个长期的过程。     

Stock,Energy and Currency Effects on the Asymmetric Wheat Market

The purpose of this paper is to explore the effects of financial and currency indicators on wheat futures prices. The results suggest that the stock market, and particularly the S&P 500, positively influence the wheat market, a fact that is attributed to the wealth effect and the modern portfolio management in the context of international markets’ integration. There is also evidence that the energy markets affecting the supply and demand side exert significant impact on the wheat market. Furthermore, the results show that the shocks of the U.S. dollar/yen exchange rate are transmitted to the wheat market. Finally, the structural analysis of wheat prices’ volatility support the hypothesis of the asymmetric conditional variance, as it appears to be more volatile in response to positive shocks caused by higher wheat prices, contrary to the respective results of the equities market.     

The Great Escape: The Multinational Trade Deficit in Historical Perspective

During the Bretton Woods era, the debate surrounding U.S. export sales versus U.S. multinational production focused primarily on the maintenance of pegged exchange rates and labor’s concern over the export of jobs. The collapse of Bretton Woods gave at least the hope that a decline in the dollar would expand exports and limit imports. Yet, the forty-year secular decline in the dollar has been one with a secular expansion of U.S. trade deficits. The older concerns of U.S. multinational sales competing with U.S. exports retain a current relevance. They help explain the unending nature of U.S. trade deficits.     

Tobin Tax and Volatility: A Threshold Quantile Autoregressive Regression Framework

From an original data set on the euro–dollar and on the won–dollar currency pairs (2008–2010), we conduct a threshold quantile autoregressive model to explain the role of a Tobin tax (TT) on the exchange rate volatility, taking into account two types of nonlinearity (regimes and quantiles). We find evidence that the impact of a TT would not be monotonic. A TT may be a good instrument to stabilize foreign exchange volatility only in normal times and/or in efficient markets. In contrast, a TT could be counterproductive in turbulent periods by increasing the volatility. In addition, by comparing a major currency pair (euro/dollar) and a minor currency pair (won/dollar), it appears that the potential stabilizing effect of a TT would be more clear‐cut in the low volatility regime of a major currency pair, similar to the euro/dollar. Our results do not corroborate the previous studies that derived a monotonic and positive impact of a TT on volatility.     

The effect of growth volatility on income inequality

This paper assesses the long-run effect of growth volatility on income inequality using a comprehensive panel of annual U.S. state-level data during the 1945 to 2004 period. Using the pooled mean group (PMG) estimator, we find evidence supporting the hypothesis that larger growth volatility positively and significantly associates with higher income inequality. Our key finding is robust to alternative lag structures, conditioning variables, inequality measures, volatility indicators, time periods, and panel estimators. Our key finding does change for asymmetric effects, where larger growth volatility positively and significantly associates with higher income inequality only for positive economic growth. The volatility effect proves positive, but insignificant, for negative economic growth.     

东亚美元本位、浮动恐惧和原罪

概要亚洲金融危机以前 ,包括中国在内的东亚国家———除了日本———都把本国的货币与美元挂钩。为了避免进一步的混乱 ,国际货币基金组织曾建议这些国家的汇率应该进一步自由浮动。可是 ,我们的分析表明 ,到目前为止 ,美元在东亚国家的货币篮子里依然占据绝对比重 ,也就是说 ,东亚国家的汇率制度基本上又回到了危机以前。到 2 0 0 2年 ,每一个东亚国家货币对美元的每日波幅已经非常微小 ,以至于可以忽略不计。同时 ,大多数东亚国家迅速积累了作为“战争基金”的官方外汇储备 ,这预示着汇率稳定将从每日延续到每月和每个季度。从“原罪”(…     

量化宽松、财政赤字与美元资产安全

次贷危机爆发以来,美国采取了一系列货币和财政政策以拯救深陷泥潭的本国经济。美联储运用非常规政策工具向金融体系注入大量流动性资产,美联邦政府也大幅度提高了财政支出,使得财政赤字愈加恶化。在此背景下,美元资产的安全性成为投资者关注的焦点。本文分别从货币政策效果、财政赤字的可持续性以及投资主体等方面考察了美元资产的安全性,分析了美国宏观经济政策的实际作用,并从投资主体结构探讨了美国联邦政府的经济取向,最后以所涉及资产的市场表现回应美元资产安全问题。笔者认为,与其它货币资产相比,持有美元资产并不会承担额外的币种风险。     

Stock markets and the exchange rate: A multi-country approach

A general model of optimal choice over risky assets is used to derive an estimable exchange rate equation which is then applied to the German mark-U.S. dollar and Japanese yen-U.S. dollar exchange rates. Previous models which exclude equities find that government bond and/or money stocks have a weak effect on exchange rates, a result that is also found here. By contrast, equity values are shown to have a significant effect on the value of the German mark-U.S. dollar and Japanese yen U.S. dollar exchange rates over the period 1974 to 1988.     

Where does return and volatility come from? The case of Asian ETFs

We analyze return and volatility of Asian iShares traded in the U.S. The difference in trading schedules between the U.S. and Asia offers a unique market setting that allows us to distinguish various return and volatility sources. We find Asian ETFs have higher overnight volatility than daytime volatility, explained by public information released during each local market's trading session. Local Asian markets also play an important role in determining each Asian ETF return. Nonetheless, returns for these funds are highly correlated with U.S. markets, indicative of the effects of investor sentiment and location of trade. Finally, returns in the U.S. market Granger-cause returns in all six Asian markets are analyzed.     

Does Leaving the Eurozone Mean Leaving the Euro?

Events in the Eurozone have raised the possibility that a Eurozone member departs the currency union. We devise a simulation to examine whether trading firms in the departed country will continue to invoice their product in the Euro or elect another currency denomination strategy. Because trading firms have flexibility in choosing their invoicing currency, they make an excellent case for studying the currency usage patterns of other economic actors that may emerge after Eurozone departure. Results suggest that greater price discrimination leads to more use of the buyer’s currency while firms that set only one price will tend to denominate that price in the U.S. dollar. Low exchange rate volatility between the exiting country’s new currency and the Euro leads to more Euro usage.     

The Volatility of Real Exchange Rates: The Australian Case

This paper presents an empirical investigation into factors underlying the real U.S.-Australian dollar exchange rate. We find that the random walk model of the real exchange rate can be improved by various GARCH specifications. In particular, we find that the estimated risk premium from a GARCH-M model is not robust to model specification. When the model is extended to include the $US/Yen real exchange rate and an index of commodity prices the GARCH-in-mean term is no longer significant. The additional variables seem to account for the increased volatility of the real exchange rate in the post-1983 period. Somewhat surprisingly, we find that changes in the Australian term spread and US-Australian interest rate differential have little or no explanatory power for the real exchange rate.     

Predicting Equity Markets with Digital Online Media Sentiment: Evidence from Markov-switching Models

The authors examine the predictive capabilities of online investor sentiment for the returns and volatility of MSCI U.S. Equity Sector Indices by including exogenous variables in the mean and volatility specifications of a Markov-switching model. As predicted by the semistrong efficient market hypothesis, they find that the Thomson Reuters Marketpsych Indices (TRMI) predict volatility to a greater extent than they do returns. The TRMI derived from equity specific digital news are better predictors than similar sentiment from social media. In the two-regime setting, there is evidence supporting the hypothesis of emotions playing a more important role during stressed markets compared to calm periods. The authors also find differences in sentiment sensitivity between different industries: it is greatest for financials, whereas the energy and information technology sectors are scarcely affected by sentiment. Results are obtained with the R programming language. Code is available from the authors upon request.     

Financial amplification of foreign exchange risk premia

Theories of financial frictions in international capital markets suggest that financial intermediaries' balance sheet constraints amplify fundamental shocks. We present empirical evidence for such theories by decomposing the U.S. dollar risk premium into components associated with macroeconomic fundamentals, and a component associated with financial intermediary balance sheets. Relative to the benchmark model with only macroeconomic state variables, balance sheets amplify the U.S. dollar risk premium. We discuss applications to financial stability monitoring.     

Exchange rate volatility and the demand for money in the U.S.

This paper examines the effect of changes in the level and volatility of exchange rates on the demand for money. It hypothesizes that exchange rate volatility exerts a negative influence on money demand separate from the effect of the level of exchange rates. Using U.S. data covering the period from 1974.1 to 1990.4, it is found that, regardless of whether the adjustment process is modeled as an error-correction or a partial-adjustment model, exchange rate volatility is negatively related to the demand for real M2 balances. This relationship is found to be more pronounced when exchange rates are expressed in real terms. The results imply that money demand responds to both the volatility of domestic prices relative to foreign prices and to the volatility of nominal exchange rates. Little evidence is found in support of the hypothesis that the level of exchange rates exerts a significant influence on money demand.     

A simple unit root test against asymmetric STAR nonlinearity with an application to real exchange rates in Nordic countries

Existing tests of the unit root hypothesis against the alternative hypothesis of exponential smooth transition autoregressive (ESTAR) nonlinearity implicitly assume symmetry under the alternative. This paper proposes a simple unit root test against the alternative of symmetric or asymmetric ESTAR nonlinearity. In the event that the unit root hypothesis is rejected, a simple test of symmetric versus asymmetric ESTAR nonlinearity is also proposed. The asymptotic distributions of the test statistics are straightforward to establish and finite-sample performance is studied with Monte Carlo simulations. An empirical application involving the real exchange rates of four Nordic countries against the U.S. dollar illustrates the usefulness of the new tests.