Markets contagion during financial crisis: A regime-switching approach

Within a Markov regime-switching VAR framework, we investigate the contagion effects among the stock market, real estate market, credit default market, and energy market covering the most recent financial crisis period when markets experience regime shifts. The results demonstrate that the watershed of regimes occurs around the start of the subprime crisis in 2007, after which the “risky” regime dominates the evolution of market chaos. During the financial crisis, excluding their own shocks, stock market shock and oil price shock are the main driving forces behind the credit default market and stock market variations, respectively. The energy market also appears to be more responsive to the stock market movements than the shocks originating from housing and credit markets. However, the impacts from the credit default market on the real estate market are not significant as expected.     

The impact of housing market disturbances on the US financial system: a pre-crisis analysis

A common critique of the Federal Reserve over the past crisis is that it should have better anticipated the impact of the run-up in home mortgage debt and the subsequent housing market crash on the financial system. As a result, the Federal Reserve should have moved much more quickly to shore up financial markets. Our article tests the hypothesis that the impact of the housing market crash on the financial system could have been anticipated. Using a VAR model along with impulse response functions and variance decompositions, we examine the link between housing market mortgage debt shocks and the financial intermediaries’ credit market behaviour. We find important connections between key macroeconomic variables and the credit behaviour of these financial institutions. However, using the pre-crisis data, we find that housing market debt shocks fail to have an impact on the credit markets accessed by these firms. These results support the notion that the impact of this crisis on the financial system could not have been anticipated given the information available at the time.     

Evaluating international financial integration under leverage constraints

The global financial crisis has undermined many economists' views about the benefits of open financial markets. Anecdotal evidence seems to indicate that financial linkages may propagate shocks during crises. This paper develops a simple two-country model in which financial liberalisation across countries takes place in the presence of credit market distortions within countries. Countries may be subject to macro risk coming from productivity shocks and direct shocks to the credit system (‘financial shocks’). Three different degrees of financial linkages between countries are examined. It is shown that the type of financial integration is critical for both macroeconomic outcomes and welfare. In particular, financial integration in bond markets alone may increase aggregate consumption volatility and reduce welfare. Financial integration in both bond and equity markets generates high positive co-movement across countries, but is welfare-improving.     

Regional spillovers across transitioning emerging and frontier equity markets: A multi-time scale wavelet analysis

The episodic wave of crises experienced across the global financial markets over the past two decades has raised questions surrounding the vulnerability of transitioning emerging and frontier equity markets to exogenous shocks. These markets, by design, have lacked the institutional or financial architecture supporting their capital base compared to more established markets. We make the initial attempt to examine four such stock markets (Saudi Arabia, UAE, South Africa and Israel). We perform multi-timescale analysis using wavelet-based time and frequency decompositions in order to investigate (i) whether the shocks transmitted were pure contagion or fundamental-based and (ii) also whether the dynamic evolution of stock market integration was mainly short-term or long-term. We find that prior to the 2008/09 US subprime crisis, the shocks generated pure contagion in contrast to the subprime crisis that reveals evidence supportive of fundamental-based contagion. Further, when exploring the dynamics of market integration, we find that integration strengthens over time as opposed to any immediate short-term outcome. This supports policies engendered to promote stock market resiliency and stability.     

股票市场和银行信贷市场的风险转移与互动

股票市场与银行信贷市场的风险转移与互动机制是整个金融体系防范风险的关键。鉴于此,基于对两市场风险转移与互动机制包含的三个阶段及其各自的表现形式所进行的实证分析,得出结论:中国股票市场与银行信贷市场之间因长期的资金关联已经存在密切的相关性,两市场在价与量上存在因果关系,同时两市场的短期波动亦存在动态关系。种种事实表明,风险转移与互动机制的第一阶段已经启动。     

Exogenous shocks,dynamic correlations,and portfolio risk management for the Asian emerging and other global developed and emerging stock markets

ABSTRACT

This study examines the potential influence of exogenous shocks on time-varying correlations and portfolio strategies between the Asian emerging and other global stock markets including developed and other emerging markets. Using the ARMA-cDCC-FIEGARCH model with and without exogenous shocks, our results highlight the usefulness of including other global stock assets in the traditional portfolio for Asian emerging market investors. However, investors have limited opportunities to diversify their assets during the global financial crisis. Moreover, the shocks from the U.S. stock market have a greater influence on global stock markets compared to that from U.S. economic policy. Fortunately, the model with exogenous shocks improves its accuracy, which plays the same role of controlling structural breaks in the model. More importantly, incorporating exogenous shocks in our model also provides better value-at-risk performance results and hedging effectiveness. These results have several important implications for investors, researchers, and policymakers.     

股票市场的货币政策传导分析

货币政策的传导机制不是唯一的，金融市场的种种特征造成了货币政策传导的多样性，股票市场中的货币政策传导就具有独特的规律，在不与银行信贷的创造机制相连的前提下，信贷资金和股市资金的沟通是合理的，目前中国信贷市场和股票市场之间千丝万缕的关系，并没有为货币政策传导创造更加有效的机制基础，股票市场还不能成为货币政策的有效传导渠道。     

Financial systems and economic growth in South Africa: a dynamic complementarity test

This study examines the relationship between banks, stock markets and economic growth in South Africa. The study attempts to answer one critical question: are stock markets and banks complementary to one another in the process of enhancing economic growth? The complementarity between the stock markets and banks is examined by including a set of interactive terms in a standard growth model, alongside bank development and stock market development proxies. In order to test the robustness of the results, three proxies of stock market development have been used, namely stock market capitalization, stock market traded value and stock market turnover – against the ratio of bank credit to the private sector, a proxy for bank-based financial development. The economic growth is, however, proxied by real GDP per capita. Using the ARDL-Bounds testing procedure, the study finds that the complementarity between stock market development and bank-based financial development is weak and sensitive to the proxy used to measure stock market development.     

Feedback effects between credit ratings and financial markets

Credit rating agencies often make sharp adjustments in their pronouncements during times of stress in financial markets. These adjustments typically happen with a delay relative to shocks in market prices. Since prices convey information about what market participants are doing and thinking, it is likely that rating agencies take into account market prices when issuing their pronouncements.In order to understand the relationship between credit ratings and financial prices, we develop a model of debt roll-over in which rating agencies incorporate information publicly available in financial markets. We find that (1) rating agencies respond to market prices, i.e. nonfundamental price volatility can shift financing conditions from a low risk spread and high credit rating equilibrium to an equilibrium with high spread and low rating, and (2) rating agencies can anchor expectations about the equilibrium in financial markets, thus serving as an antidote to nonfundamental price volatility.     

主权信用评级对证券市场的影响研究述评

国际证券市场的持续动荡,使得主权信用评级的影响作用越加突现。诸多研究指出,主权信用评级调整对股票市场和债券市场都存在影响,但由于市场对信息的敏感程度不同,股票市场比债券市场的反应剧烈,而且股票市场对主权信用评级调整能作出提前响应。由于市场预期和经济周期的合力作用,市场存在着对正负评级变化的不对称反应。因此,对现有文献进行梳理和评议,一方面增进了人们对这一问题的认识和理解,另一方面也为制定风险防范政策提供了一定的参考依据。     

On the detection of extreme movements and persistent behaviour in Mediterranean stock markets: a wavelet-based approach

We combine the global Hurst exponent and Morlet wavelet multi-resolution analysis (MRA) to investigate the dynamic behaviour of six selected stock markets in the Mediterranean region. Specifically, we employ the resonance coefficients and their power spectra to identify potential extreme movements and long-term dependence in stock returns. Using weekly data for the period 2005 to 2010, our results reveal that the wavelet MRA is able to reconstruct the effects of major extreme shocks on stock returns of studied markets, such as the Asian financial crisis, the 9/11 terrorist attacks and the 2007–2009 financial crisis. Moreover, the wavelet-based global Hurst exponent indicates the presence of long-term dependencies in stock returns of all the considered markets, except for France where the anti-persistent behaviour is detected. Overall, our findings are useful to assess the stock market efficiency and provide new insights into stock market dynamics over different time scales.     

Impacts of China's crash on Asia-Pacific financial integration: Volatility interdependence,information transmission and market co-movement

This paper examines the price and volatility dynamics between China and major stock markets in the Asia-Pacific, investigating the effects of the Chinese stock market crash (2015–2016) for the first time. Employing the Bayesian VAR and BEKK GARCH, we observe that price and volatility spillover behaviours are different during the stable and stress periods. Particularly, price spillovers from China to other regional markets are more significant during a bullish period, showing that ‘good news’ emanating from China has strong impacts on its neighbours during better market condition. In the turbulent period, we observe strong shock spillover effects and enhanced volatility spillovers from China to most Asia-Pacific stock markets. This is because China, as an important trading partner and strategic financial centre shows to exert significant influence on the Asia-Pacific region through various economic channels. We also find that the Asia-Pacific stock markets spill over their shocks to China during the crisis, indicating that China is becoming more integrated with the regional financial markets.     

International stock markets comovements: the role of economic and financial integration

The contribution of economic and financial integration to international stock markets comovements are investigated by means of a large scale macroeconometric model, set in the factor vector autoregressive framework (F-VAR). The findings point to a relevant role for both economic and financial integration in explaining international stock markets comovements for the G-7 countries. While economic integration would exercise its effects through the common response of stock markets to global economic shocks, financial integration would operate through financial shocks spillovers, particularly at the regional level.      

Do stress tests matter? A study on the impact of the disclosure of stress test results on European financial stocks and CDS markets

During the recent sovereign debt crisis, the European Banking Authority conducted two stress tests on European banks in order to gauge their capital needs, core Tier-1 ratios and ratios of resilience to adverse shocks. We assess the informational content of the disclosure of the stress test outcomes. We conclude that the stress tests conveyed new information and that the outcomes were not anticipated by the stock market but were partially anticipated by the credit default swap (CDS) market. However, while the stock market reacted to the disclosure of the stress test outcomes, in the CDS market there is some evidence of a ‘reverse’ reaction. Moreover, the publication of the outcomes of the stress tests had a stronger impact on the stock prices of riskier financial institutions. A similar pattern is evident in the CDS market, albeit narrowed to one of the stress tests and amid the financial institutions with higher perceived credit risk.     

Price connectedness between green bond and financial markets

We study price connectedness between the green bond and financial markets using a structural vector autoregressive (VAR) model that captures direct and indirect transmission of financial shocks across markets. Using heteroskedasticity to identify the structural VAR model parameters, our empirical findings reveal that the green bond market is closely linked to the fixed-income and currency markets, receiving sizeable price spillovers from those markets and transmitting negligible reverse effects. We also show that, in contrast, the green bond market is weakly tied to the stock, energy and high-yield corporate bond markets. These findings have implications in terms of portfolio and risk management decisions for environmentally aware investors holding positions in green bonds.     

What matters in the finance–growth nexus of advanced economies? Evidence from OECD countries

Over the last decades, a large strand of finance and growth literature has provided ample evidence on the importance of financial deepening for economic development. Yet, recently, the focus of public debate has shifted towards the role of the financial system structure, an area in which empirical research remains relatively sparse and exploratory in nature. With this article, we aim to contribute to that debate by analysing the role the financial system structure plays in economic growth and risk. Focusing on stock markets and studying OECD economies over 1994–2013, we find that, ceteris paribus, financial systems with relatively larger stock markets facilitate economic growth and dampen economic risk. Our findings remain robust under application of instrumental variable and system generalized method of moments estimators, as well as when we use an alternative definition of stock market development, estimate median regressions, examine relatively high-frequency annual data, control for systemic banking crises or apply quadratic specifications. We find no such effect for private bond markets or private credit volume. Overall, our results suggest that financial system structure matters for the economic development of advanced economies and highlight the importance of a debate about the optimal structure of an economy’s financial system.     

Non-linear causality between the stock and real estate markets of Western European countries: Evidence from rank tests

Using the non-parametric rank tests proposed by Breitung (2001), we set out in this study to determine whether any non-linear long-run equilibrium relationship exists between the stock and real estate markets of Western European countries. We go on to adopt the threshold error-correction model (TECM) to determine whether a similar relationship is discernible possibly non-linear functions of the log-price of these two markets. The findings clearly point to the existence of long-run unidirectional and bidirectional causality between the real estate market and the stock market in regions both above and below the threshold level. Finally, we find the existence of both wealth and credit price effects in the real estate markets and stock markets of Western European countries, which thereby offer financial institutions and individual investors in their construction of long-term investment portfolios within these two asset markets.     

Financialization of food. Modelling the time-varying relation between agricultural prices and stock market dynamics

This article studies the correlation of agricultural prices with stock market dynamics. We discuss the possible role of financial and macroeconomic factors in driving this time-varying relation, with the aim of understanding what caused positive correlation between agricultural commodities and stocks in recent years. While previous works on commodity-equity correlation have focused on broad commodity indices, we study 16 agricultural prices, in order to assess patterns that are specific to agricultural commodities but also differences across markets. We show that an explanation based on a combination of financialization and financial crisis is consistent with the empirical evidence in most markets, while global demand factors don’t appear to play a significant role. The correlation between agricultural prices and stock market returns tends to increase during periods of financial turmoil. The impact of financial turmoil on the correlation gets stronger as the share of financial investors in agricultural derivatives markets rises. Our findings suggest that the influence of financial shocks on agricultural prices should decrease as global financial tensions settle down but also that, as long as agricultural markets are ‘financialized’, it might rise again when it is less needed, i.e. in the presence of new financial turmoil.     

What can wavelets unveil about the vulnerabilities of monetary integration? A tale of Eurozone stock markets

The study has two main objectives: (i) to investigate whether there is pure contagion or fundamental-based contagion/interdependence among the Eurozone equity markets (Germany, France, Italy, Spain and Netherlands), attributable to the shocks stemming from nine major crises around the world (ii) to investigate the evolution of market integration, whether mainly short-run or long-run. Wavelet decompositions, in both its discrete and continuous forms, are employed to unveil the multi-horizon nature of co-movements, volatility and lead–lag relationships. This is to unveil the path of linkages and the behavior underlying the transmission mechanism of financial shocks across major Eurozone stock markets. Evidence also supports the presence of common shocks whereby equity markets in Eurozone are significantly affected by episodic crisis events globally. Prior to the recent subprime crisis, contagion effects have generated short-term shocks that may potentially involve, among other factors, excessive channels. In stark contrast, the most recent US subprime crisis and EMU sovereign debt crisis reveal the evidence of fundamental-based contagion. We also find the increasing short-run and long-run stock market integration, driven by several stages of the establishment of EMU. Policy implications for regulators and investors are discussed in the context of continued monetary integration.     

金融加速器效应在中国存在吗?

本文从金融加速器理论出发,运用门限向量自回归(TVAR)模型在宏观层面上对中国信贷市场与宏观经济波动的非线性关联展开实证研究。通过非线性脉冲响应函数的检验结果我们发现:在1990年1月至2006年5月期间,中国存在显著的金融加速器效应,表现为对于相同特征的各种外生冲击,经济波动在信贷市场处于"紧缩"状态下的反应均明显强于信贷市场处于"放松"状态下的反应。另外,信贷冲击对于信贷市场状态变化的作用最为显著,其次是货币冲击和价格冲击,最后是实际冲击。进一步的检验还表明:信贷市场在宏观经济波动过程中既是重要的波动源,同时也是波动的有力传导媒介,运用金融加速器理论有助于合理解释中国宏观经济波动的轨迹特征。最后本文阐述了实证结论的政策含义和未来研究的侧重点。