Volatility transmission between stock and foreign exchange markets: a connectedness analysis

ABSTRACT

This paper empirically investigates volatility transmission among stock and foreign exchange markets in seven major world economies during the period July 1988 to May 2018. To this end, we first perform a static and dynamic analysis to measure the total volatility connectedness in the entire period (the system-wide approach). Second, we make use of a dynamic analysis to evaluate the net directional connectedness for each market. To gain further insights, we examine the time-varying behaviour of net pair-wise directional connectedness during the financial turmoil periods experienced in the sample period Our results suggest that slightly more than half of the total variance of the forecast errors is explained by shocks across markets rather than by idiosyncratic shocks. Furthermore, we find that volatility connectedness varies over time, with a surge during periods of increasing economic and financial instability.     

How can a strong currency or drop in oil prices raise inflation and the black-market premium?

Based on the case of Venezuela, an oil exporter with a multiple exchange rate regime, this paper explains two counterintuitive phenomena. First, a fall in oil revenue can drive a steep rise in inflation by reducing foreign exchange for imports and raising the fiscal deficit financed by money growth. Second, when foreign exchange is rationed, a devaluation of the official exchange rate could produce a transitory fall in inflation by reducing the fiscal deficit and subsidies for buying foreign exchange. The paper also shows that the black market exchange rate can be rising far faster than overall inflation if it is driven by prices in the most distorted goods markets. The channels emphasized in this paper for determining inflation and the black market exchange rate are novel in the literature and may provide avenues of future research on commodity exporters and foreign exchange constraints.     

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.     

Time-Varying Fundamentals of the Euro–Dollar Exchange Rate

Abstract

This study examines changes in the impact of the economic fundamentals on the euro–dollar exchange rate. First, the monetary model is augmented with the equity markets and the model is estimated in its structural form. Second, the time-varying impacts of the long-run fundamentals representing equilibrium in different markets on the euro–dollar exchange rate are examined using Kalman filtering. The time-varying structural model indicated that the relative importance of the different fundamentals was not equal and the impact of the fundamentals was time-dependent.     

Real interest parity and transaction costs for the group of 10 countries

Equality of ex ante real interest rates is investigated allowing for variations within a transaction costs band. Transaction costs are estimated in foreign exchange markets and in Eurocurrency markets directly from the bid–ask spreads. Two one-sided t tests show that observed transaction costs are too small to account for differences among real interest rates. Moreover, there is a clear evidence that transaction costs tend to decrease overtime.     

A general equilibrium pricing model with speculation,quantity risk,price risk and foreign exchange risk

This paper develops a general equilibrium model where prices and foreign exchange rates are endogenous and based upon more fundamental determinants. Speculative behavior leading to position taking in claims on foreign risky commodities is explained. It is shown that in a multicurrency environment with less than complete markets and sequential trading opportunities, heterogenous expectations instigate this behavior; speculation occurs only when news (new information) is anticipated to emerge which can lead to a revision in prices and foreign exchange rates. However, it is contended that although foreign exchange risk and price risk do exist in such a market, they are results of the underlying and inescapable quantity risk. Furthermore, in well functioning markets, the risk that emanates from position taking in state contingent claims on foreign commodities and which influences final consumption is quantity risk. The distinction drawn between the three types of risks and the hierarchy established among the three markets with which these risks are associated has implications for international financial management, especially as it pertains to multinational corporations' foreign exchange exposure management.     

Capital Inflows,Exchange Rate Flexibility and Credit Booms

Historically, capital flow bonanzas have often fueled sharp credit expansions in advanced and emerging market economies alike. Focusing primarily on emerging markets, this paper analyzes the impact of exchange rate flexibility on credit markets during periods of large capital inflows. It is shown that bank credit is larger and its composition tilts to foreign currency in economies with less flexible exchange rate regimes, and that these results are not explained entirely by the fact that the latter attract more capital inflows than economies with more flexible regimes. The findings thus suggest countries with less flexible exchange rate regimes may stand to benefit the most from regulatory policies that reduce banks' incentives to tap external markets and to lend/borrow in foreign currency; these policies include marginal reserve requirements on foreign lending, currency‐dependent liquidity requirements and higher capital requirement and/or dynamic provisioning on foreign exchange loans.     

Assessing the readiness of the BRICS grouping for mutually beneficial financial integration

This paper assesses the extent of transmission of volatility shocks in the equity and foreign exchange markets among BRICS (Brazil, Russia, India, China and South Africa) countries to infer the degree of risk sharing and the possibility of a beneficial financial integration among its member countries. To this end, the paper makes use of the spillover index methodology suggested by Diebold and Yilmaz ( 2012 ). Nonetheless, the paper extends this methodology by incorporating ex ante volatility measures that account for long memory in equity and foreign exchange markets. The paper finds asymmetric influences among BRICS countries in relation to the cross transmission of risks. The finding of the paper implies the possibility of unequal benefit that could result from a possible capital market liberalization between the BRICS countries.     

Spillover Dynamics of Central Bank Interventions

Abstract. Central banks frequently intervene in foreign exchange markets to reduce volatility or to correct misalignments. Such operations may be successful if they drive away destabilizing speculators. However, the speculators do not simply vanish but may reappear on other foreign exchange markets. Using a model in which traders are able to switch between foreign exchange markets, we demonstrate that while a central bank indeed has several means at hand to stabilize a specific market, the variability of the other markets depends on how the interventions are implemented.     

News and correlations of CEEC-3 financial markets

We employ DCC-MGARCH models to investigate conditional correlations between six CEEC-3 financial markets. In general, the highest correlations exist between Hungary and Poland in foreign exchange and stock markets. Short-term money markets are somewhat isolated from each other. We find that the associations of CEEC-3 exchange rates versus euro are weaker than those versus the US dollar. The persistence of the effect of shocks on the time-varying correlations is strongest for foreign exchange and stock markets, indicating a tendency toward contagion. In searching for the origins of financial market volatility in the CEEC-3, we uncover some evidence of Granger-causality on the foreign exchange markets. Finally, using a pool model, we investigate the impact of euro area, US, and CEEC-3 news on the correlations. Apart from ECB monetary policy news, we observe no broad effects of international news on correlations; instead, local news exerts an influence, which suggests a dominance of country- or market-specific circumstances.     

Households' Preferences and Exchange Rate Overshooting

Abstract

This paper uses a ‘New-Open-Economy Macroeconomic’ model to study the effect of a shock to Households' preferences on exchange rate dynamics. The special features of the model are that Households' preferences exhibit a ‘catching-up with the Joneses’ effect and that international financial markets are imperfectly integrated. Results of numerical simulations of the model demonstrate that these features imply that, in an otherwise standard ‘New-Open-Economy Macroeconomic’ model, a shock to Households' preferences can give rise to an overshooting of the exchange rate.     

Exchange Rates,Expectations, and Monetary Policy: a NOEM Perspective*

We use a dynamic general‐equilibrium optimizing two‐country model to analyze how the formation of exchange rate expectations shapes the effects of a monetary policy shock in an open economy. We also provide empirical evidence on how traders in foreign exchange markets form exchange rate expectations. Our model implies that the short‐run output effect of a permanent monetary policy shock diminishes if “technical traders” form the type of regressive exchange rate expectations we find in our empirical analysis. If the influence of technical traders is strong enough, a permanent expansionary monetary policy shock can result in a temporary decline of the output in the country in which it takes place. The output effect of a temporary monetary policy shock is magnified when technical traders form regressive exchange rate expectations.     

Limited asset market participation and the consumption‐real exchange rate anomaly

Abstract Under efficient consumption risk sharing, as assumed in standard international business cycle models, a country's aggregate consumption rises relative to foreign consumption, when the country's real exchange rate depreciates. Yet empirically, relative consumption and the real exchange rate are essentially uncorrelated. This paper shows that this ‘consumption‐real exchange rate anomaly’ can be explained by a simple model in which a subset of households trade in complete financial markets, while the remaining households lead hand‐to‐mouth (HTM) lives. HTM behaviour also generates greater volatility of the real exchange rate and of net exports, which likewise brings the model closer to the data.     

THE EFFECT OF FORWARD MARKETS ON MULTINATIONAL FIRMS

This paper presents a model of a risk averse multinational firm under exchange rate risk. The firm, which owns and controls assets in two countries, is engaged in production, sales and forward contracting whenever forward markets exist. First, we investigate the effects of exchange rate uncertainty without any risk sharing markets. It is shown that the firm internalizes missing hedging markets by increasing foreign production and lowering foreign sales. Therefore the firm hedges by repatriating foreign profits in the form of goods. Second, the implications of the existence of forward markets of global market decisions are discussed. It is shown that a separation theorem holds. This does not imply that the multinational firm shifts all the risk into the forward exchange market.     

Exploring the interaction between stock price index and exchange rates: an asymmetric threshold approach

This article examines the impact of stock market news on the foreign exchange markets of USA, Canada and UK, employing an innovative extension of the asymmetric threshold model of Apergis and Miller (2006). Under this framework we can disentangle the reaction of foreign exchange market to bad or good news and small or large news of stock returns. Our comprehensive daily data-set spans the period from January 1990 to June 2014. Using a cointegration and error correction model, we document the existence of a causal relationship between stock market and foreign exchange markets. Most interestingly, our results derived from the asymmetric threshold model confirm that the relationship between stock and foreign exchange markets is sensitive to short-term good or bad news and short-term small or large news. Our findings entail significant implications for policymakers, governments, risk managers and international investors.     

Exchange rates change,asset-denominated currency difference and stock price fluctuation

This paper examines differences in the connectedness between exchange rates and stock prices for companies with different asset currencies on the Hong Kong stock market, and it seeks to explain those differences by proposing a hypothesis on asset-denominated currency difference. Under a framework of investor heterogeneity, we establish a dynamic, discrete theoretical model to analyse the connectedness between exchange rates, the stocks of local Hong Kong companies, the stocks of companies from the mainland and foreign exchange interventions. Using monthly data from January 2000 to August 2018, we adopt the time-varying parameter vector auto-regression (TVP-VAR) model to empirically study the dynamic relationships between exchange rates and the prices of both Hong Kong-based and mainland-based stocks. The results show significant differences in the ways that exchange rates and prices for the two types of stocks are linked. The exchange rates are positively correlated with mainland stocks and negatively correlated with Hong Kong stocks. Moreover, foreign exchange intervention is found to be an effective means for stabilising exchange rates, although such intervention tends to increase stock volatility.

Abbreviations: TVP-VAR - time-varying parameter vector auto-regression model; MCMC - Monte Carlo-Markov Chain method.     

Exchange in a general market with indivisible goods

We show how to restrict trades in exchange markets with heterogeneous indivisible goods so that the resulting restricted exchange markets, the fixed deal exchange markets, have a unique core allocation. Our results on fixed deal exchange markets generalize classical results on the Shapley-Scarf housing market, in which each agent owns one good only. Furthermore, we define the class of fixed deal exchange rules for general exchange markets, and prove that these are the only exchange rules that satisfy strategyproofness, individual rationality, and a weak form of efficiency.     

Evidence for Financial Contagion in Endogenous Volatile Periods

The objective of this study is to analyze cross‐border contagious dynamics in both foreign exchange markets and stock exchange markets. Propagation is analyzed with respect to the transmission of excessive volatility that is endogenously determined. The contagion process is discussed in the context of financial systems, foreign direct investments and trade. Implementing a vector autoregressive‐multivariate generalized autoregressive conditional heteroskedasticity (VAR‐MGARCH) model, we show that country‐specific turbulence in financial markets is able to create unanticipated financial contagion across countries. Diversified trade and financial relations decrease the risk of exposure to contagion from external markets. The world's largest economies, however, play a price‐setter role, and diversification is of secondary importance. Asymmetric transmission of the empirically predicted contagion prevails in the latter case.     

Technology transfer: economic factors that influence transferor and transferee’s choice*

ABSTRACT

This research presents itself as one of the earliest studies to consider economic factors that influence decision making in an international technology transfer while considering the perspectives of the transferor and transferee individually. Unlike previous studies, this study takes a multi-variable analysis approach in considering these factors through the development of a common analytical framework that can be applied to similar studies. The methodology used herein is quantitative and involves a multiple regression analysis, which combines variables examined unilaterally in earlier studies. The results show that economic factors that influence a transferor’s choice of a transferee include inflation rate, currency exchange rate, and foreign direct investment while in the converse relationship, the results prove that in addition to inflation rate, currency exchange rate, and foreign direct investment, official development assistance was also relevant.     

Real exchange rates,asset prices and terms of trade: A theoretical analysis

This paper develops a continuous-time two-country dynamic equilibrium model, in which the real exchange rates, asset prices, and terms of trade are jointly determined in the presence of nontradable goods. The model determines the relation between the financial markets and real goods markets in the world economy and their responses to various shocks under the home bias assumption. A positive domestic supply shock induces a positive return on the domestic asset markets and a deterioration of terms of trade that improves the foreign output and boosts the foreign asset markets. Demand shocks act in the opposite way. This model also analyses the impact of change in the relative price of nontradable to tradable goods on the terms of trade and asset markets. A higher productivity growth in tradable goods than in nontradable goods leads to a higher relative price of nontradable to tradable goods, which appreciates the real exchange rate, deteriorates the terms of trade, and depresses the domestic and foreign asset markets. A lower relative price of nontradable goods depreciates the real exchange rate, improves the terms of trade, and lifts both the domestic and foreign asset markets.