金融危机背景下汇市与股市关系实证研究

本文建立了由上证综指、汇率、利率与道·琼斯指数构成的多变量VAR模型,运用Granger因果检验、脉冲响应函数与方差分解技术分析了金融危机背景下外汇市场与股票市场关系.实证分析结果表明:我国金融市场上汇率变动对股票价格有明显的短期作用,而股票价格变动对汇率没有影响;美国股市波动对我国股市的短期冲击超过人民币汇率对股市的冲击;我国的利率调整对汇率有短期效应,但对股票价格无影响.     

Effects of monetary policy news on financial assets: Evidence from Brazil on a bivariate VAR-GARCH model (2006–17)

The impact of news releases related to the inflation targeting regime on the financial market is analyzed by estimating a bivariate VAR GARCH-BEKK-in-mean model. We use daily data, from January 2006 to May 2017, of stock prices index (IBOVESPA), exchange rate (BRL/USD) and interbank deposit rate (DI360). We developed a positive and negative news index to measure the impact of news releases based on Caporale et al. (2016) and Caporale et al. (2018). Although the literature on the subject is vast, this paper fills relevant gaps in three ways. First, we investigate the bidirectional relationship between monetary policy related news releases and the behavior of asset prices before and after the 2008 crisis in Brazil. Second, we consider the relationship between the second moments of the variables of interest, using the conditional volatility as a proxy for uncertainty. Third, we provide a time series approach to measure the effect of macroeconomic related news releases on financial asset returns. The results indicate there are mean spread effects from news for the exchange rate and the Brazilian stock index: (i) the GARCH-in-mean parameter is statistically significant for positive and the difference of news for the DI360; (ii) monetary policy and external shocks are statiscally significant as expected with exception of the external shocks for the Brazilian stock index; and (iii) there are volatility spillovers and changes of this volatility after the crisis for stock index and DI360.     

Measuring the effect of the zero lower bound on yields and exchange rates in the U.K. and Germany

The zero lower bound on nominal interest rates began to constrain many central banks' setting of short-term interest rates in late 2008 or early 2009. According to standard macroeconomic models, this should have greatly reduced the effectiveness of monetary policy and increased the efficacy of fiscal policy. However, these models also imply that asset prices and private-sector decisions depend on the entire path of expected future short-term interest rates, not just the current level of the monetary policy rate. Thus, interest rates with a year or more to maturity are arguably more relevant for asset prices and the economy, and it is unclear to what extent those yields have been affected by the zero lower bound. In this paper, we apply the methods of Swanson and Williams (2013) to medium- and longer-term yields and exchange rates in the U.K. and Germany. In particular, we compare the sensitivity of these rates to macroeconomic news during periods when short-term interest rates were very low to that during normal times. We find that: 1) USD/GBP and USD/EUR exchange rates have been essentially unaffected by the zero lower bound, 2) yields on German bunds were essentially unconstrained by the zero bound until late 2012, and 3) yields on U.K. gilts were substantially constrained by the zero lower bound in 2009 and 2012, but were surprisingly responsive to news in 2010–11. We compare these findings to the U.S. and discuss their broader implications.     

Random Walk in the MIST

The term MIST has been coined to describe the next tier of large emerging economies, namely Mexico, Indonesia, South Korea, and Turkey. This article reexamined whether the properties of mean reversion for stock prices held for the MIST emerging stock markets using the sample from April 2004 to April 2012. The authors utilized a panel unit test with Fourier transformation capable of taking multiple structural breaks into account to discover that MIST stock markets indeed follow a random walk process. This is consistent with the efficient market hypothesis, suggesting that historical information is not useful in predicting future prices in MIST stock markets.     

The short run efficacy of monetary policy under floating exchange rates reconsidered

This paper disputes the argument that the short-run effectiveness of monetary policy in stabilizing domestic output under floating rates is necessarily reduced if elasticities of demand for imports and exports with respect to the current exchange rate are low and capital flows depend on the exchange rate. It is shown that the relative efficacy of monetary changes is determined by the interest rate elasticity of international interest payments and receipts and the effect of exchange rate variations on the demand for money in addition to the exchange rate elasticities of trade and capital flows.     

股票市场开放条件下的货币政策效应分析

本文探讨了在股票市场开放条件下,股票市场的国际资本流动对货币政策的影响。在开放经济条件下,对在东道国投资的国际投资者来说,如果股票投资比债券投资更重要,那么货币政策比财政政策相对有效的观点难以成立。扩张性货币政策使国内利率下降,但利率下降会增加股票投资的预期收益,这会吸引国际资本流入,从而导致本币升值,因而扩张性货币政策对产出的净影响是不确定的。浮动汇率体制有利于减缓外部冲击。     

Panel analysis of the monetary approach to exchange rates: Evidence from ten new EU members and Turkey

This paper presents empirical evidence which links the exchange rates to monetary variables in the newly entered ten EU members and Turkey. Using the panel version of various cointegration tests, we find a long-run relationship between nominal exchange rate and monetary variables such as monetary differential, output differential, interest rate differential and price differential. In addition, empirical evidence shows that our error-correction framework of the out-of-sample predictability outperforms random walk after two years.     

Betting the house

Is there a link between loose monetary conditions, credit growth, house price booms, and financial instability? This paper analyzes the role of interest rates and credit in driving house price booms and busts with data spanning 140 years of modern economic history in the advanced economies. We exploit the implications of the macroeconomic policy trilemma to identify exogenous variation in monetary conditions: countries with fixed exchange regimes often see fluctuations in short-term interest rates unrelated to home economic conditions. We use novel instrumental variable local projection methods to demonstrate that loose monetary conditions lead to booms in real estate lending and house prices' bubbles; these, in turn, materially heighten the risk of financial crises. Both effects have become stronger in the postwar era.     

Capital market efficiency and the relationship between equity returns, interest rates, and monetary aggregates in Australia

This paper examines the efficiency with which the Australian share market incorporates new information relating to interest rates and the monetary aggregates into share prices. It finds a strong relationship between medium term government security yields and equity returns although little relationship could be found between unanticipated changes in the monetary aggregates and share returns. Furthermore, the interest rate relationship involved long lags and suggests inefficiency in stock market pricing in Australia.     

Persistent real exchange rates

Three well known facts that characterize exchange rate data are: (a) the high correlation between bilateral nominal and real exchange rates; (b) the high degree of persistence in real exchange rate movements; and (c) the high volatility of real exchange rates. This paper attempts a joint, albeit partial, rationalization of these facts in an environment with no staggered contracts and where prices are preset for only one quarter. There are two key innovations in the paper. First, we augment a standard two-country open economy model with learning-by-doing in production at the firm level. This induces monopolistically competitive firms to endogeneize the productivity effect of their price setting behavior. Specifically, firms endogenously choose not to adjust prices by the full proportion of a positive monetary shock in order to take advantage of the productivity benefits of higher production. Second, we introduce habits in leisure. This makes the labor supply decision dynamic and adds an additional source of propagation. We show that the calibrated model can quantitatively reproduce significant fractions of the aforementioned facts. Moreover, as in the data, the model also produces a positive correlation between the terms of trade and the nominal exchange rate.     

The Aftermath of a Currency Collapse: How Different are Emerging Markets?

In currency crises, unlike in orderly devaluations, the financial markets dominate events. Previous research has shown that the output effects of a crisis tend to be worse in emerging markets, and the current account adjustment greater. This paper examines the evolution of a wider range of macroeconomic variables from two years before a currency collapse to two years afterwards. On the basis of twelve recent episodes, it is shown that currency collapses (crises followed by depreciations) have had a much greater adverse impact in emerging markets (defined as relatively high‐income developing countries exposed to international capital markets) than in developed countries. There is greater nominal and real depreciation, a substantial inflation shock, a much bigger output effect, and far greater import compression, whilst inflows of portfolio capital virtually cease. These differences are statistically significant. Nevertheless there is wide variation n the post‐collapse experience of the six emerging markets studied (Mexico, Thailand, Korea, Indonesia, Russia and Brazil). Although all six experienced a sudden stop or even a reversal of capital flows and very sharp nominal depreciations, inflation remained low in Thailand, Korea and Brazil, and output losses were comparatively small in Russia and Brazil. Previous studies of individual crises suggest that important factors are the state of the banking system and its vulnerability to currency movements, the ability of the authorities to establish a credible macroeconomic policy after the collapse, and whether the crisis triggers significant political instability.     

Unconventional economic policies and sentiment: An international assessment

This paper estimates, using Bayesian and global VARs, the spillover effects of unconventional fiscal and monetary policies implemented in the United States and in the Eurozone during the last decade. Consumer confidence and investor sentiment indicators are introduced in the models in order to highlight the signalling channel in the responses to economic policy innovations in times of crisis. Our results reveal that consumer and investor perceptions of innovative economic measures are relevant to study the pass-through of economic policies to the real sector in times of crisis and zero lower bound interest rates. In particular, the signalling channel plays an important role in successful unconventional economic policies. Moreover, if unconventional economic policies have an impact abroad, the effects are similar to those measured in the domestic country/region. Consequently, coordination and transparency are a prerequisite for ensuring short-term growth after a global financial crisis.     

The anatomy of financial crises: Evidence from the emerging ADR market

We study the anatomy of recent financial crises in Mexico, East Asia, Russia, Brazil, Turkey, and Argentina by investigating the efficiency and pricing of the emerging American depositary receipt (ADR) market. We use a non-parametric technique to test for persistent regime shifts in two basic structural relationships for ADR returns in 20 emerging countries — identified via arbitrage and capital mobility considerations — that should always hold in efficient and integrated capital markets. We find that those “normal” market conditions were instead often violated in proximity of financial crises: The law of one price often weakened (by 54% on average) and domestic sources of risk became more important (often by more than 100%) for many emerging ADRs. We also find the likelihood of these regime shifts to be related to proxies for uncertainty among investors, exchange rate volatility, trade linkages, and liquidity (but not stock market trends, currency devaluations, capital flight, or capital controls).     

Interdependence of Major Exchange Rates in Ghana: A Wavelet Coherence Analysis

ABSTRACT

We have employed the three-dimensional continuous Morlet wavelet transform methodology to explore the co-movement amongst the returns of four major currencies in Ghana (dollar, euro, pound, and yen) for the period May 1999 to February 2018. The analysis reveals that the dynamics of the interdependence of the currencies is time-varying and heterogeneous. Our empirical findings demonstrate that the currencies are closely linked or interconnected. The lead–lag relationships between the returns of the exchange rates established that volatilities in the euro and yen significantly affect movements in the other currencies in daily and weekly exchange rate returns. The presence of lead–lag effects and stronger co-movements at short-run fluctuations may induce arbitrage and diversification opportunities to investors, albeit with limited space. The differences in the co-movements of returns and the evidence of contagion among the foreign exchange markets provide reliable incentive to the monetary authorities for unflinching strides to halt the speeding exchange rates.     

论利率与储蓄率对国际短期资本流动的影响

影响短期资本流动的因素很多,文章主要从利率与储蓄率的角度,对影响国际短期资本流动的因素进行分析,并在此基础上研究利率与储蓄率的正比例关系及其对国际短期资本流动的交互影响。     

The Internationalization of Capital in a Small and Vulnerable Economy

Summary

Since the early 1980s, Ecuador has increasingly adopted a pro-free trade posture and has removed most restrictions on its capital account. Foreign capital, however, has not penetrated key sectors of the economy as the privatization drive has stalled and financial markets have remained weak. The combination of open capital accounts and meager foreign capital inflows has not proven particularly beneficial to Ecuador. Specifically, some aspects of the internationalization of capital such as offshore banking have created significant limitations for the conduct of monetary and exchange rate policy and have added to the vulnerability of the country in the face of economic crises. These negative externalities of cross-border short-term capital movements are not balanced by inflows of long-term foreign capital.     

The anatomy of financial crises: Evidence from the emerging ADR market

We study the anatomy of recent financial crises in Mexico, East Asia, Russia, Brazil, Turkey, and Argentina by investigating the efficiency and pricing of the emerging American depositary receipt (ADR) market. We use a non-parametric technique to test for persistent regime shifts in two basic structural relationships for ADR returns in 20 emerging countries — identified via arbitrage and capital mobility considerations — that should always hold in efficient and integrated capital markets. We find that those “normal” market conditions were instead often violated in proximity of financial crises: The law of one price often weakened (by 54% on average) and domestic sources of risk became more important (often by more than 100%) for many emerging ADRs. We also find the likelihood of these regime shifts to be related to proxies for uncertainty among investors, exchange rate volatility, trade linkages, and liquidity (but not stock market trends, currency devaluations, capital flight, or capital controls).     

The fear of globalizing capital markets

It is generally accepted that free flow of goods benefits both economies without serious risks. The situation with the free flow of capital is different. Many policy makers and economists are skeptical not only about the benefits of free flow of capital, but also see uncontrolled capital flows as risky and destabilizing. Other economists, however, firmly believe that free capital flows will lead to a more efficient allocation of resources and greater economic growth. Nevertheless, the debate has little empirical evidence to rely on. We hope to fill that gap in this paper. We study the benefits and risks associated with capital flows by examining the experience of emerging economies around the time that foreign investment in stock markets was allowed. We investigate the impact of capital flows on stock returns, stock market efficiency, inflation, and exchange rates. We also examine the effect on different kinds of volatility that might arise as a consequence of capital flows: volatility of stock returns, volatility of inflation rates, and volatility of exchange rates. We find no evidence of an increase in inflation or an appreciation of exchange rates. Stock returns reflect a lower cost of capital after liberalization. There is no increase in stock market volatility and the volatility of inflation and exchange rates actually decreases. Stock markets become more efficient as determined by testing the random walk hypothesis.     

Emerging stock markets of the Eastern Mediterranean rim

The Eastern Mediterranean Rim possesses a vast and rich history of capitalist activity and capital markets. The oldest civilizations along these shores, namely in Egypt, in Greece, and in modern day Turkey, had an understanding of rudimentary economic theory and monetary systems long before the precursor peoples of the industrialized economies of today. Even stock markets in Turkey, Lebanon, and Egypt had greater relative depth and breadth 50 years ago than do 90% of the so-called emerging markets of today. This survey analyzes and profiles the equity capital markets of Greece, Turkey, Lebanon, Jordan, Israel, and Egypt, and provides some clues to their future growth and performance.     

论美国金融危机对中国的影响及对策

美国次贷危机,给中国经济带来了巨大不良影响。这种影响主要通过外需、资本流动、资产负债表、金融市场、国际初级产品价格、汇率及货币政策等渠道传递到中国。中国应借鉴美国次贷危机产生诱因的教训,从改善宏观调控、加快贸易调整、稳定投资增长和支持消费等几方面着手应对危机影响。同时,应在扩大内需。保持经济平稳发展的基础上。加强国际合作,和全世界共同应对美国金融危机,弱化、遏止危机对中国经济的影响。