国际资本流动“突然停止”、消费平滑与最优外汇储备持有量*

通常认为外汇储备具有抵御外部冲击、平滑居民消费、增进社会福利的作用。循此逻辑,文章构建了三部门模型模拟了货币当局面临资本流动“突然停止”时,出于平滑消费目的的最优储备持有行为。研究发现：中国静态最优外汇储备量约占GDP的1926%;中国实际储备与最优储备的差额自2010年起稳定在18万亿美元;最优外汇储备量与“突然停止”发生概率及其导致的产出损失、短期外债规模、居民存款规模及危机时的资产置换比率、风险规避程度正相关,与银行备付金比率、国际风险溢价程度负相关;从危机应急的角度看,提高银行备付金比率、控制居民存款置换外币比例能有效节约外汇储备,但从长远来看控制国内短期外债规模、确保银行稳健运营才是应对国际资本“突然停止”风险的关键。     

中国外汇储备适度规模实证分析

截至2007年底,中国外汇储备突破1.5万亿美元,建立计量模型对中国外汇储备规模进行实证分析表明：自2001年以来中国外汇储备实际规模一直大于适度规模。应扩大内需,酌情开征外汇交易税,适度进行汇率改革,以缓解外汇储备过快增长的局面。     

The Polish exchange rate system: A unit root and cointegration analysis

In October 1991 Poland has established a crawling peg regime in which the zloty is tied to a currency basket and devalued with a monthly rate of crawl. If the monetary authorities are successful in defending the crawling peg the basket rate measured in Polish zloty is supposed to be stationary. Furthermore, a stable long-run relationship between the zloty-U.S. dollar rate and the basket's value expressed in U.S. dollar is expected to exist. The results of the unit root and cointegration analysis indicate that the monetary authorities have been able to defend the crawling peg for the sample periods under study, although it seems that not all requirements of the exchange rate regime have been met. The foreign exchange markets, however, have not supported the relationships derived from the crawling peg system after the introduction of the free floating system in April 2000.The final version of this paper has been prepared while I was a Jean Monnet Fellow at the European University Institute. I would like to thank the EUI for the award of the Fellowship and its hospitality. Moreover, I am grateful to Helmut Lütkepohl, Anja Schulz, Ralf Brüggemann, and two anonymous referees for many helpful comments and suggestions. I also thank the Deutsche Forschungsgemeinschaft, SFB 373, for financial support.     

Financial conditions and the well-being of the real estate sector—A bottom-up default analysis on five ASEAN economies

This paper investigates the impact of financial conditions, for example, cross-border capital flows, interest rates and foreign exchange rates, on the well-being of the real estate developers in five Association of Southeast Asian Nations economies. The study uses a Bottom-up Default Analysis model to stress test their creditworthiness by reproducing the financial shocks during the global financial crisis, taper tantrum, and the U.S.-China trade war and COVID-19 pandemic. The median developers remain sound under the prescribed adversities. The performance is underpinned by their strong fundamentals and a conducive mix of monetary, foreign exchange, and open capital account policies by national authorities.     

The impact of foreign macroeconomic news on financial markets in the Czech Republic, Hungary, and Poland

In this paper, we investigate the effects of euro area and US macroeconomic news on financial markets in the Czech Republic, Hungary, and Poland (CEEC-3) from 1999 to 2006. Using a GARCH model, we examine the impact of news on daily returns of 3-month interest rates, stock market indices, exchange rates versus the euro, and the US dollar. First, both US and European macroeconomic news has a significant impact on CEEC-3 financial markets. Second, the process of European integration is accompanied by an increasing importance of euro area news relative to US news. Third, there are country-specific differences: for example, the Czech stock market is relatively more affected by foreign news since the Copenhagen Summit in December 2002. In general, our results support the hypothesis of a deepening euro area influence on the CEEC-3 over time and a corresponding reduction in the relative importance of US shocks.     

Integral stabilization policy and flexible exchange rates

Summary Under a floating exchange rate system, exchange rates influence economic activity through their effect on the trade balance. Nevertheless, exchange rate movementsper se do not prevent integral fiscal and monetary policies from achieving a target for domestic economic activity²⁴. At the same time, since the exchange rate continuously moves to preserve asset market equilibrium, the (potential) balance of payments may not be equilibrated when the authorities have attained their internal target. In that event, the continued movement in exchange rates may produce cycles in economic activity which in turn lead to exchange rate oscillations. Finally, the reader is warned that the introduction of inside and outside lags into the system may produce additional oscillatory behavior or even explosiveness, as Phillips demonstrated for the closed economy. However, these new possibilities would arise independently of the floating exchange rate system and could not be attributed to it.     

China's Banking Reform

This article discusses the main problems facing the Chinese banking system and concludes that, despite serious problems, the risk seems small that, in the near future, a financial crisis will occur that will pose severe problems for the international financial system. An internal financial crisis, however, could occur. Without government support, the economic viability of many of China's banks is questionable. The government and central bank authorities acknowledge the situation and have taken some steps toward reform. The most serious threat to the banking system lies in the accumulation of non-performing loans (NPLs)--many of them policybased loans extended by state-owned banks to money-losing state-owned companies with little expectation that they would be completely repaid. China has been taking measures to keep the problem from worsening and has created four asset management companies to dispose of NPLs that still have value. Since the Chinese economic reforms began in 1978, Chinese authorities have made significant progress in modernising their banking system, although they still have a long way to go. However, there are several ameliorating factors that still keep its financial and foreign exchange system viable. China's continued high rate of growth and high savings rate have funneled deposits into the banking system, while a $20-30 billion annual trade surplus together with an inflow of foreign direct investment at about $40 billion per year have resulted in an accumulation of foreign exchange reserves exceeding $200 billion. China does not carry an unusually heavy debt burden, either domestic or international, although its short-term borrowing in foreign currencies has been increasing. China does not currently face a serious risk of either a domestic or international liquidity crisis--unless, of course, a severe and prolonged world recession occurs that adversely affects Chinese exports as well as the inflow of foreign direct investment.     

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.     

Structural breaks, cointegration, and speed of adjustment Evidence from 12 LDCs money demand

This article estimates a theoretically coherent and empirically robust money demand function for 12 developing countries. The modeling procedure not only tests for a regime shift in the cointegrating equation, but also in the error correction model. Five specific hypotheses are examined. The article demonstrates that a long-run equilibrium relationship exists between real M1 or M2 balances, real income, inflation, exchange rate, foreign exchange risk, and foreign interest rates in the countries studied. The study provides information on the speed of adjustment to equilibrium and the median and mean time lags for adjustment of real money balances to changes in each determinant. Although our results provide more evidence against M1 than M2, this study clearly establishes that both M1 and M2 must be considered as viable policy tools for less developed countries.     

Why does the peso-dollar exchange rate show a depreciation trend? The role of productivity differentials

Over the last three decades, Mexico's macroeconomic policy has been driven by a sound orthodox strategy: an open economy via many trade agreements signed since the mid-1980s, a nominal exchange rate under a flexible regime since 1994, central bank autonomy, and responsible fiscal policy, among other benchmarks. Nevertheless, the exchange rate has continued on a path of depreciation against the US dollar. In this paper, we show that although an equilibrium relationship exists between the exchange rate and prices in Mexico and the US (its main commercial partner), there are other forces affecting the former. The main factor in this relentless long-term depreciation is the loss of productivity in Mexico relative to the US. In addition, we show that the extraordinary liquidity supplied by the US during the 2008 crisis caused the Mexican peso to appreciate against the dollar.     

The effect of relative monetary surprises on spot exchange rates

This paper examines the hypothetical relationship between US and Canadian monetary surprises and the behaviour of US-Canadian spot exchange rates. Past studies have found that positive US monetary surprises were correlated with an appreciating US dollar in foreign exchange markets.

In this paper, it is argued that monetary surprises in the US must be measured relative to foreign monetary innovation (rather than in the conventional absolute sense) when examining their impact on exchange markets. Rational investors consider expected returns and risk differentials in the US and local markets jointly in determining whether to be net buyers or sellers of US dollars. The monetary actions of both the Fed and the Central Bank operating in the local (foreign) economy will be considered in the foreign exchange market. Because of the close synchronization between the weekly money supply announcements in Canada and the US, it is possible to examine whether the relative or absolute US monetary surprise is more significant in the foreign exchange market. The empirical findings provide considerable support for the relative over the absolute measure of US monetary innovations. With monetary innovations measured in relative terms, the empirical results provide support for the policy reaction over the inflation expectation hypothesis.     

我国的外汇储备与通货膨胀

近年来，我国外汇储备规模迅猛增长，截至2006年6月，已高达9411亿美元，超过日本成为全球持有外汇储备最多的国家。那么外汇储备的增加对我国的物价指数的变动是否产生影响以及影响有多大？本文以国际货币主义的通货膨胀传导机制为理论基础．应用协整分析法、格兰杰因果关系分析法．分析物价水平与外汇储备之间的因果关系、长期均衡关系，在实证结果基础上得出结论并分析结果。     

墨西哥外汇衍生品市场发展对我国的经验借鉴

墨西哥外汇衍生品市场的发展及汇率制度的变迁和金融危机的发生有着密切的联系.墨西哥金融管理当局积极参与其外汇市场的开放及衍生品市场的发展,并在市场监管、交易所发展和应对离岸市场冲击等方面发挥着主导作用,对我国具有借鉴意义.     

Foreign Exchange Accumulation and the Entrapment of Chinese Monetary Power: Towards a Balanced Growth Regime?

This article criticises the notion that China's foreign exchange reserves have strengthened its monetary power. While some scholars have argued that China's international monetary influence has been ‘entrapped’ by the domestic interests of its export sector, a one-sided focus on the export sector fails to identify the significant constraints on its macroeconomic autonomy. This article proposes an extension of the concept of entrapment that draws attention to the key role of state-owned enterprises (SOEs) and their domestic fixed-asset investment in its growth regime: China's external monetary dependency – which is understood as both export dependency and the need to maintain foreign exchange accumulation – has been caused by a disparity between fixed-asset investment and private consumption that reflects a redistribution of income from the household sector to the SOE sector. In particular, I expose the SOE sector's rising interests in foreign exchange accumulation by uncovering a mutually reinforcing dynamic between China's external monetary dependence and the financial repression of its banking system. By entrenching an investment-led growth regime that provides key benefits the SOE sector, this dynamic is found to have seriously constrained the macroeconomic policy autonomy of Chinese authorities to rebalance growth away from investments and exports towards private consumption.     

Does the currency board matter? US news and Argentine financial market reaction

Using a Generalized Autoregressive Conditional Heteroscedasticity (GARCH) model, we study the effects of the US monetary policy and macroeconomic announcements on Argentine money, stock and foreign exchange markets over the period January 1998 to July 2007. We show, first, that both types of news have a significant impact on all markets. Second, there are noticeable differences in reaction for different subsamples: Argentine money markets were more dependent on US news under the currency board than after it was abandoned as the floating exchange rate partly absorbs spillover effects from the US. Finally, we find that the US-dollar-denominated assets react less to US news than peso-denominated assets, which suggests that the currency board was not completely credible during its final years.     

中国外汇储备投资多样化研究

2006年末，我国外汇储备已突破1万亿美元，远远超过了外汇储备的最优规模。从外汇储备“藏汇于国，，与“藏汇于民”的不同管理模式出发，在实证分析基础上，可以2003年为拐点，考察近年来我国存在外汇储备超额现象。根据资产组合理论和部分国家和地区外汇储备积极管理经验，提出相关策略。     

Anchoring and Psychological Barriers in Foreign Exchange Markets

This paper develops a simple behavioral exchange rate model in which investor perception of the fundamental value is anchored to the nearest round number. Traders adjust their anchors in two ways. Some believe that exchange rates move toward (perceived) fundamentals, while others bet on a continuation of the current exchange rate trend. The behavior of the traders causes complex dynamics. Since the exchange rate tends to circle around its perceived fundamental value, the foreign exchange market is persistently misaligned. Central authorities have the opportunity to reduce such distortions by pushing the exchange rate to less biased anchors, but to achieve this, they have to break psychological barriers between anchors.     

Coffee export booms and monetary disequilibrium: some evidence for Colombia

The theoretical models that analyse the monetary consequences of export booms show that under a regime of fixed exchange rates, they affect not only the demand for money, via real income, but also the money supply via foreign exchange accumulation. Within this theoretical framework, this study proposes an empirical approach to determine whether the coffee booms of the second half of the 1970s and mid–1980s led to excess money supply in the Colombian economy. The findings provide evidence in favour of a direct association between coffee export booms and excess money supply, implying that external disturbances jeopardize the ability of the economic authorities to carry out successful monetary policy.     

The demand for money and the real exchange rate misalignments in emerging European countries: A nonlinear approach

This paper investigates the extent to which domestic and foreign money balances in emerging European countries are influenced by foreign exchange considerations. A well-specified and stable relationship between real money demand and the exchange rate can be perceived as an important part of a successful monetary policy. This study examines the long-run determinants of real exchange rates (RERs) associated with the behavioral equilibrium exchange rate (BEER) approach and identifies currency misalignments in these countries. The misalignment is later used to test the nonlinear behavior of the demand for money. The results indicate that the RER misalignments have a significant impact on domestic money demand. When the currencies are overvalued, there is a reduction in domestic money demand, and when they are undervalued, there is an increase in domestic money demand. Furthermore, it can be concluded that overvaluation causes an increase in foreign money demand indicating a shift of preference from domestic to foreign currency.     

The Euro: An Italian perspective

The adoption of Euro as a common currency of twelve European countries has meant a considerable change in the Italian exchange rate policy. In the past, before Italy entered the EMS and again in 1992-96 when Italy temporarily left the EMS, the Italian monetary authorities enacted a policy of managed exchange rates, aiming at keeping the dollar rate stable, while letting the Italian lira depreciate vis-à-vis the German mark. By so doing, the danger of imported inflation was reduced (the dollar area was then a major import area) and at the same time the Italian exports to Europe were made easier. In the presence of a regime of fixed exchange rates in the European area, Italian industry is trying to make its exports more competitive by means of a reduction in costs. This means moving segments of production to small or middle-size firms, located in Italy as well as in developing countries. A further help is coming from the gradual but consistent depreciation of the Euro against the US dollar. The relevance of the dollar area in Italian exports has been correspondingly increasing.