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Stock market integration in Africa: Further evidence from an information-theoretic framework 非洲股市一体化:来自信息理论框架的进一步证据
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-08-23 DOI: 10.1111/infi.12419
Kingstone Nyakurukwa, Yudhvir Seetharam

This study revisits stock market integration in Africa using an information-theoretic framework that quantifies the flow of information between exchanges. We use daily return data for seven MSCI-classified African stock exchanges between 2011 and 2021. As Bitcoin has become an important asset class on the African continent, we also explore whether this cryptocurrency confers any diversification benefits. Our method holds that stock markets are integrated if there is a significant flow of information between exchanges. The results reveal a statistically insignificant flow of information among African stock exchanges, and for the few cases in which information flow is statistically significant, the magnitudes are low. South Africa is the most influential stock market, as it transmits most of the total transfer entropy (informational value) in the system. We also observe that African stock exchanges are weakly integrated with Bitcoin.

本研究使用量化交易所之间信息流的信息论框架,重新审视非洲的股票市场整合。我们使用2011年至2021年间七个msci分类的非洲证券交易所的日收益数据。由于比特币已成为非洲大陆的重要资产类别,我们还探讨了这种加密货币是否能带来任何多样化的好处。我们的方法认为,如果交易所之间有大量的信息流,股票市场就是整合的。结果显示,非洲证券交易所之间的信息流在统计上不显著,对于信息流在统计上显著的少数情况,其幅度很低。南非是最具影响力的股票市场,因为它传递了系统中大部分的总传递熵(信息价值)。我们还观察到,非洲证券交易所与比特币的结合很弱。
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引用次数: 3
Content: International Finance 25/2 内容:国际金融25/2
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-08-23 DOI: 10.1111/infi.12394
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引用次数: 0
Financial reforms and low-income households' impact on international consumption risk sharing 金融改革与低收入家庭对国际消费风险分担的影响
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-07-28 DOI: 10.1111/infi.12418
Malin Gardberg

Complete financial markets allow countries to share their consumption risks internationally, thereby creating welfare gains through lower volatility of aggregate consumption. Using a panel of 116 countries between 1970 and 2019, I show that a higher share of low-income households reduces consumption risk sharing, especially so in less-developed countries. Moreover, I find that a broad range of financial market reforms and financial integration have a positive impact on international consumption risk sharing in poorer developing countries, while in emerging market countries, financial market development, financial reforms, and capital account openness has an impact. In advanced economies, financial (stock and bond) market development as well as financial integration improves international risk sharing. A lack of financial reforms, a lower degree of financial integration and a high share of low-income households thus contribute to the degree of risk sharing being lower in developing countries than in advanced economies.

完善的金融市场使各国能够在国际上分担其消费风险,从而通过降低总消费的波动性创造福利收益。我在1970年至2019年期间对116个国家进行了调查,结果表明,低收入家庭的比例越高,消费风险分担就越少,在欠发达国家尤其如此。此外,我发现广泛的金融市场改革和金融一体化对较贫穷的发展中国家的国际消费风险分担有积极影响,而在新兴市场国家,金融市场发展、金融改革和资本账户开放有影响。在发达经济体,金融(股票和债券)市场的发展以及金融一体化促进了国际风险分担。因此,缺乏金融改革、金融一体化程度较低以及低收入家庭比例较高,导致发展中国家的风险分担程度低于发达经济体。
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引用次数: 0
Spillover effects in Chinese carbon, energy and financial markets 中国碳、能源和金融市场的溢出效应
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-07-04 DOI: 10.1111/infi.12417
Guangxi Cao, Fei Xie, Meijun Ling

As China's carbon market continues to develop, its close connection with the financial and energy markets is becoming increasingly apparent. A systematic study of the spillover effects between markets is important, as it can help prevent excessive fluctuations in carbon prices. With this in mind, this study proposes a time-varying parameter vector autoregression with Lanne–Nyberg decomposition extended joint connectedness approach to analyze quantitatively the spillover effects in the “carbon–energy–financial” system. Empirical results show that a bidirectional spillover effect exists among markets. Not only does the carbon market have the most pronounced return (volatility) linkages with the natural gas (clean energy) market, but the information connected with the energy markets is also more closely linked than with the financial markets. We also find that market fluctuations, caused by the China–US trade conflict and the COVID-19 pandemic, have increased spillovers in the system.

随着中国碳市场的不断发展,其与金融和能源市场的紧密联系日益明显。对市场间的溢出效应进行系统研究很重要,因为这有助于防止碳价格的过度波动。基于此,本文提出了一种时变参数向量自回归与Lanne-Nyberg分解扩展联合连通性方法,对“碳-能源-金融”系统中的溢出效应进行定量分析。实证结果表明,市场之间存在双向溢出效应。碳市场不仅与天然气(清洁能源)市场有着最明显的回报(波动性)联系,而且与能源市场相关的信息也比与金融市场的联系更为紧密。我们还发现,中美贸易冲突和新冠肺炎疫情引发的市场波动加剧了系统溢出效应。
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引用次数: 2
The way digitalization is impacting international financial markets: Stock price synchronicity 数字化影响国际金融市场的方式:股价同步性
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-06-26 DOI: 10.1111/infi.12416
Chen Chen, M. Mahdi Moeini Gharagozloo, Layla Darougar, Lei Shi

This paper investigates whether and how the development level of a country's digital economy affects stock price synchronicity. The results indicate that countries with high levels of digital economy development exhibit low stock price synchronicity. Additionally, by decomposing stock price synchronicity into systematic and firm-specific stock return variations, we find that systematic (firm-specific) variations of stock returns decrease (increase) with the level of a country's digitalization. These findings shed light on the future trend of stock price synchronicity in financial markets around the world and support the information-based interpretation of stock price synchronicity.

本文考察了一国数字经济发展水平是否以及如何影响股价同步性。结果表明,数字经济发展水平高的国家股价同步性较低。此外,通过将股票价格同步性分解为系统性和企业特有的股票收益变化,我们发现股票收益的系统性(企业特有的)变化随着国家数字化水平的提高而减小(增大)。这些发现揭示了全球金融市场股票价格同步性的未来趋势,支持了基于信息的股票价格同步性解释。
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引用次数: 3
The financial US uncertainty spillover multiplier: Evidence from a GVAR model 美国金融不确定性溢出乘数:来自GVAR模型的证据
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-06-02 DOI: 10.1111/infi.12414
Afees A. Salisu, Rangan Gupta, Riza Demirer

This study examines the role of the global financial cycle (GFCy) in the propagation of uncertainty shocks from the United States to other national economies using a large-scale global vector autoregressive model of 33 countries. Although the dominant role of US uncertainty over global economic dynamics is established, the findings highlight the moderating role of the GFCy in the spillover effects of uncertainty shocks. The US uncertainty shocks, compared with own-domestic uncertainty shocks, are found to have a more prominent negative impact on output during stressed market conditions, implied by low values of the GFCy, while the impact turns largely insignificant during high GFCy states. The findings provide evidence in favour of a US uncertainty spillover multiplier, suggesting that the design of monetary policy as a response to US uncertainty needs to be contingent on the state of the integrated global financial markets, captured by the GFCy.

本研究利用33个国家的大规模全球向量自回归模型,考察了全球金融周期(GFCy)在不确定性冲击从美国传播到其他国家经济体中的作用。尽管美国的不确定性对全球经济动态的主导作用已经确立,但研究结果强调了GFCy在不确定性冲击溢出效应中的调节作用。与国内的不确定性冲击相比,美国的不确定性冲击在紧张的市场条件下对产出有更显著的负面影响,这是由低GFCy值所暗示的,而在高GFCy状态下,这种影响基本上变得微不足道。研究结果提供了支持美国不确定性溢出乘数的证据,表明为应对美国不确定性而设计的货币政策,需要视全球金融市场一体化的状况而定(GFCy反映了这一点)。
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引用次数: 2
The impact of Sino–US trade friction on the performance of China's textile and apparel industry 中美贸易摩擦对中国纺织服装行业业绩的影响
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-06-01 DOI: 10.1111/infi.12413
Maosheng Ye, Jim H. Shen, Eric Golson, Chien-Chiang Lee, Yuting Li

This study applies the event-analysis method and takes three Chinese listed textile and apparel companies that are representative of the upstream, midstream, and downstream of the textile value chain as research objects. By tracking the Baidu index trend of the keyword “trade war” to identify the ‘time window’ for each iconic event, we apply the autoregressive distributed lag approach to examine the impact of important landmark events on the performance of these companies during the period of Sino–US trade friction in 2018. We find that the impact diminished over time. Additionally, compared with upstream companies, midstream and downstream companies were hurt more. However, the risks were generally controllable.

本研究采用事件分析法,选取具有纺织价值链上、中、下游代表性的三家中国纺织服装上市公司作为研究对象。通过跟踪关键词“贸易战”的百度指数趋势,确定每个标志性事件的“时间窗口”,应用自回归分布滞后方法,考察2018年中美贸易摩擦期间重要标志性事件对这些公司业绩的影响。我们发现这种影响随着时间的推移而减弱。此外,与上游企业相比,中下游企业受到的伤害更大。然而,风险总体上是可控的。
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引用次数: 29
Corporate investment and the exchange rate: The financial channel 企业投资与汇率:金融渠道
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-06-01 DOI: 10.1111/infi.12415
Ryan Banerjee, Boris Hofmann, Aaron Mehrotra

Currency depreciation dampens corporate investment through a financial channel. Using firm-level data for 16 major economies, we find that depreciation reduces investment by interacting with firm leverage. The finding is consistent with predictions from a stylized model of credit risk in which the exchange rate affects credit supply and investment when firms borrow in foreign currency, or in local currency from foreign lenders. Empirically, the channel is significantly more pronounced in emerging market economies (EMEs), reflecting greater dependence on foreign funding and less developed financial systems. Our findings suggest that the depreciation of EME currencies since 2011 probably contributed in a significant way to the investment slowdown in these economies.

货币贬值通过金融渠道抑制企业投资。利用16个主要经济体的企业层面数据,我们发现贬值通过与企业杠杆的相互作用减少了投资。这一发现与一种程式化信贷风险模型的预测相一致。在这种模型中,当企业以外币或本币向外国贷款人借款时,汇率会影响信贷供应和投资。从经验上看,这一渠道在新兴市场经济体(eme)中更为明显,反映出对外国资金的依赖程度更高,金融体系欠发达。我们的研究结果表明,自2011年以来,EME货币的贬值可能在很大程度上导致了这些经济体的投资放缓。
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引用次数: 0
Global financial crisis versus COVID-19: Evidence from sentiment analysis 全球金融危机与新冠肺炎-19:来自情绪分析的证据
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-04-19 DOI: 10.1111/infi.12412
Aktham Maghyereh, Hussein Abdoh

This study examines the relationship between sentiment and the realized volatility of returns for different asset classes (stocks, bonds, foreign currency, and commodities). Specifically, we aim to answer two key questions: first, how does sentiment relate to volatility during crises (mainly during the global financial crisis [GFC] and the COVID-19 pandemic)? Second, can sentiment be used to forecast volatility during crises? Using two nonparametric methods, mutual information and transfer entropy, we find that information sharing and transfer increased during the pandemic. We also find that sentiment information transfer to the volatility of assets differed between the GFC and the COVID-19 crisis. Since sentiment can reduce uncertainty around the realized variance of assets, we investigate the forecasting ability of sentiment during crises. We find that sentiment has a greater predictive power on realized volatility during crises, with a differential impact on volatility depending on the asset class. Our findings carry important implications for hedging, risk management and building models to predict variance during crises.

摘要本研究考察了不同资产类别(股票、债券、外汇和大宗商品)的情绪与实现收益波动率之间的关系。具体来说,我们的目标是回答两个关键问题:首先,在危机期间(主要是在全球金融危机[GFC]和COVID - 19大流行期间),情绪与波动之间的关系如何?其次,市场情绪能否用于预测危机期间的波动性?利用互信息和传递熵两种非参数方法,我们发现信息共享和传递在大流行期间增加了。我们还发现,在全球金融危机和COVID - 19危机之间,情绪信息对资产波动性的传递有所不同。由于情绪可以减少资产已实现方差的不确定性,我们研究了危机期间情绪的预测能力。我们发现,在危机期间,情绪对已实现波动率有更大的预测能力,对波动率的影响取决于资产类别。我们的发现对对冲、风险管理和建立模型来预测危机期间的方差具有重要意义。
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引用次数: 3
Content: International Finance 25/1 内容:国际金融25/1
IF 1.2 4区 经济学 Q2 Social Sciences Pub Date : 2022-04-11 DOI: 10.1111/infi.12393
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引用次数: 0
期刊
International Finance
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