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Diversity as value driver in Euro Stoxx 50 companies 多元化是欧洲斯托克 50 指数公司的价值驱动力
Pub Date : 2024-03-19 DOI: 10.1108/jrf-12-2023-0310
Raul Gómez-Martínez, María Luisa Medrano-García
PurposeCorporate diversity encompasses the different talents, knowledge, cultures, experiences and values of its employees. This diversity is reflected in multiple characteristics, such as race, age, gender, social class, religion, sexual orientation, ethnicity, culture and disability. The objective of this study is to identify if diversity is a value driver.Design/methodology/approachWe take the diversity score from the Diversity Leaders Index 2023 published by Financial Times (FT) and Statista; this will be our independent variable in linear regression models whose objective variables are relevant fundamental indicators of the Euro Stoxx 50 companies. It is, therefore, a cross-sectional sample with financial data taken as of the current date. We have 37 Euro Stoxx 50 components included in the diversity ranking.FindingsThe results indicate that diversity is not a value driver for trading volume, for its revenue, or for systematic risk measured by the beta parameter. However, it is observed, in a confidence interval of 90%, that the most diverse companies are larger (according to their market capitalization). In addition, the most diverse companies are more profitable [return on assets (ROA)] and valued by the market [price to earnings ratio (PER)] in a confidence interval of 95%.Originality/valueThese results indicate that companies should promote corporate diversity as a management strategy, as it is observed that more diverse companies are more profitable and valued by the market. This study provides a quantitative vision in the context of homogeneous companies such as the Euro Stoxx 50 Index on the aspects in which diversity is a value driver.
宗旨企业多样性包括员工的不同才能、知识、文化、经验和价值观。这种多样性体现在多种特征上,如种族、年龄、性别、社会阶层、宗教、性取向、民族、文化和残疾。我们从《金融时报》(FT)和 Statista 发布的 "2023 年多元化领导者指数"(Diversity Leaders Index 2023)中提取了多元化得分;这将成为线性回归模型中的自变量,其客观变量是欧洲斯托克 50 指数公司的相关基本指标。因此,这是一个截面样本,财务数据取自当前日期。结果表明,多样性并不是交易量、收入或贝塔参数衡量的系统性风险的价值驱动因素。然而,在 90% 的置信区间内,可以观察到最多样化的公司规模更大(根据其市值)。此外,在 95% 的置信区间内,多元化程度最高的公司盈利能力更强 [资产收益率 (ROA)],市场价值更高 [市盈率 (PER)]。本研究从同质公司(如欧洲斯托克 50 指数)的角度,对多元化成为价值驱动力的各个方面进行了定量分析。
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引用次数: 0
Impact of specific liquidity shocks on the bank's solvency 特定流动性冲击对银行偿付能力的影响
Pub Date : 2024-02-27 DOI: 10.1108/jrf-05-2023-0124
Julien Dhima, Catherine Bruneau
PurposeThis study aims to demonstrate and measure the impact of liquidity shocks on a bank’s solvency, especially when the bank does not hold sufficient liquid assets.Design/methodology/approachThe proposed model is an extension of Merton’s (1974) model. It assesses the bank’s probability of default over one or two (short) periods relative to liquidity shocks. The shock scenarios are materialised by different net demands for the withdrawal of funds (NDWF) and may lead the bank to sell illiquid assets at a depreciated value. We consider the possibility of second-round effects at the beginning of the second period by introducing the probability of their occurrence. This probability depends on the proportion of illiquid assets put up for sale following the initial shock in different dependency scenarios.FindingsWe observe a positive relationship between the initial NDWF and the bank’s probability of default (particularly over the second period, which is conditional on the second-round effects). However, this relationship is not linear, and a significant proportion of liquid assets makes it possible to attenuate or even eliminate the effects of shock scenarios on bank solvency.Practical implicationsThe proposed model enables banks to determine the necessary level of liquid assets, allowing them to resist (i.e. remain solvent) different liquidity shock scenarios for both periods (including eventual second-round effects) under the assumptions considered. Therefore, it can contribute to complementing or improving current internal liquidity adequacy assessment processes (ILAAPs).Originality/valueThe proposed microprudential approach consists of measuring the impact of liquidity risk on a bank’s solvency, complementing the current prudential framework in which these two topics are treated separately. It also complements the existing literature, in which the impact of liquidity risk on solvency risk has not been sufficiently studied. Finally, our model allows banks to manage liquidity using a solvency approach.
本研究旨在证明和衡量流动性冲击对银行偿付能力的影响,尤其是当银行没有持有足够的流动性资产时。它评估了银行在一个或两个(短)时期内相对于流动性冲击的违约概率。冲击情景通过不同的资金提取净需求(NDWF)来实现,并可能导致银行以贬值的价格出售非流动资产。我们通过引入第二轮效应发生的概率来考虑第二轮效应发生的可能性。我们观察到初始 NDWF 与银行违约概率之间存在正相关关系(尤其是在第二阶段,这是以第二轮效应为条件的)。然而,这种关系并不是线性的,流动性资产所占的比例越大,就越有可能减轻甚至消除冲击情景对银行偿付能力的影响。因此,它有助于补充或改进当前的内部流动性充足性评估流程(ILAAPs)。原创性/价值所提出的微观审慎方法包括衡量流动性风险对银行偿付能力的影响,补充了当前分别处理这两个主题的审慎框架。该方法也是对现有文献的补充,在现有文献中,流动性风险对偿付能力风险的影响尚未得到充分研究。最后,我们的模型允许银行使用偿付能力方法管理流动性。
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引用次数: 0
Political stability and corruption nexus: an international perspective on European and Asian countries 政治稳定与腐败关系:欧洲和亚洲国家的国际视角
Pub Date : 2024-02-27 DOI: 10.1108/jrf-10-2023-0261
D. Beju, Maria Ciupac-Ulici, V. Bresfelean
PurposeThis paper aims to investigate the impact of political stability on corruption by drawing upon a sample encompassing both developed and developing European and Asian countries.Design/methodology/approachThe dataset, sourced from the Refinitiv database, spans from July 2014 to May 2022. Panel data techniques, specifically pooled estimation and dynamic panel data [generalized method of moments (GMM)] are employed. The analysis encompasses both fixed and random effects models to capture country-specific cross-sectional effects. To validate our findings, we perform a robustness test by including in the investigation four control variables, namely poverty, type of governance, economic freedom and inflation. To test heterogeneity, the dataset is further divided into two distinct subsamples based on the countries’ locations.FindingsEmpirical findings substantiate that political stability (viewed as the risk of government destabilization) has a positive and significant impact on corruption in all analyzed samples of European and Asian countries, though some differences are observed in various subsamples. When we take into account the control variables, these analysis results are robust.Research limitations/implicationsThis research provided a panel data analysis with GMM, while other empirical methodologies could also be used, like the difference-in-difference approach. However, our results should be validated by extending the time and the sample to a worldwide sample and using alternative measures of corruption and political stability. Moreover, our focus was on a linear and unidirectional relationship between the considered variables, but it would be interesting to test in our further research a non-linear and bidirectional correlation between them. Furthermore, we have introduced in the robustness test only four economic variables, but to consolidate our findings, we plan to include socioeconomic and demographic variables in future studies.Practical implicationsThese outcomes imply that authorities should be aware of the necessity of implementing anti-corruption policies designed to establish effective agencies and enforcement structures for combating systemic corruption, to improve the political environment and the quality of institutions and to apply coherent economic strategies to accelerate economic growth because higher political stability and sustainable development determine a decrease in levels of corruption.Social implicationsAt the microeconomic level, the survival of organizations may be in danger from new types of corruption and money laundering. Therefore, in order to prevent financial harm, the top businesses worldwide should respond to instances of corruption through strengthened supervisory procedures. This calls for the creation of a mechanism inside the code of conduct where correct reporting of suspected situations of corruption would have a prompt procedure to be notified of. To avoid corruption in operational procedures, na
设计/方法/途径数据集来自 Refinitiv 数据库,时间跨度为 2014 年 7 月至 2022 年 5 月。采用了面板数据技术,特别是集合估计和动态面板数据[广义矩法(GMM)]。分析包括固定效应和随机效应模型,以捕捉特定国家的横截面效应。为了验证我们的研究结果,我们在调查中加入了四个控制变量,即贫困、治理类型、经济自由度和通货膨胀,从而进行了稳健性测试。实证研究结果证明,在所有分析的欧洲和亚洲国家样本中,政治稳定性(被视为政府不稳定的风险)对腐败有积极而显著的影响,尽管在不同的子样本中观察到一些差异。当我们将控制变量考虑在内时,这些分析结果是稳健的。研究局限/启示本研究使用 GMM 进行面板数据分析,也可使用其他实证方法,如差分法。然而,我们的研究结果应通过将时间和样本扩展到全球样本,并使用其他腐败和政治稳定性衡量标准来验证。此外,我们的重点是所考虑的变量之间的线性和单向关系,但在我们的进一步研究中,对它们之间的非线性和双向相关性进行检验将是很有意义的。此外,我们在稳健性测试中只引入了四个经济变量,但为了巩固我们的研究结果,我们计划在今后的研究中加入社会经济和人口变量。社会影响在微观经济层面,组织的生存可能会受到新型腐败和洗钱活动的威胁。因此,为了防止经济损失,全球顶级企业应通过强化监督程序来应对腐败事件。这就需要在行为准则中建立一个机制,使正确举报可疑腐败情况的程序能够迅速得到通知。为避免业务程序中的腐败,应由国家层面的政府官员、行政人员和立法人员以及组织层面的高级管理层和董事会制定国家计划和政策。这可能会降低组织与腐败相关的额外开支,确保经济增长并改善全球福利。 独创性/价值我们的研究的新颖之处在于,它对欧洲和亚洲国家的大量样本进行了广泛研究,探讨了腐败与政治稳定之间的关系。本文还探讨了经济文献中一个探索较少的话题,即政治稳定对腐败的影响。此外,研究还提出了政策建议,概述了旨在改善政治格局和打击腐败的有效合理措施。
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引用次数: 0
Time–frequency correlation and risk spillovers between Euramerican mature and Asian emerging crude oil futures markets 欧洲成熟原油期货市场与亚洲新兴原油期货市场之间的时频相关性和风险溢出效应
Pub Date : 2024-02-21 DOI: 10.1108/jrf-04-2023-0096
Shuifeng Hong, Yimin Luo, Mengya Li, Duoping Yang
PurposeThis paper aims to empirically investigate time–frequency linkages between Euramerican mature and Asian emerging crude oil futures markets in terms of correlation and risk spillovers.Design/methodology/approachWith daily data, the authors first undertake the MODWT method to decompose yield series into four different timescales, and then use the R-Vine Copula-CoVaR to analyze correlation and risk spillovers between Euramerican mature and Asian emerging crude oil futures markets.FindingsThe empirical results are as follows: (a) short-term trading is the primary driver of price volatility in crude oil futures markets. (b) The crude oil futures markets exhibit certain regional aggregation characteristics, with the Indian crude oil futures market playing an important role in connecting Euramerican mature and Asian emerging crude oil futures markets. What’s more, Oman crude oil serves as a bridge to link Asian emerging crude oil futures markets. (c) There are significant tail correlations among different futures markets, making them susceptible to “same fall but different rise” scenarios. The volatility behavior of the Indian and Euramerican markets is highly correlated in extreme incidents. (d) Those markets exhibit asymmetric bidirectional risk spillovers. Specifically, the Euramerican mature crude oil futures markets demonstrate significant risk spillovers in the extreme short term, with a relatively larger spillover effect observed on the Indian crude oil futures market. Compared with India and Japan in Asian emerging crude oil futures markets, China's crude oil futures market places more emphasis on changes in market fundamentals and prefers to hold long-term positions rather than short-term technical factors.Originality/valueThe MODWT model is utilized to capture the multiscale coordinated motion characteristics of the data in the time–frequency perspective. What’s more, compared to traditional methods, the R-Vine Copula model exhibits greater flexibility and higher measurement accuracy, enabling it to more accurately capture correlation structures among multiple markets. The proposed methodology can provide evidence for whether crude oil futures markets exhibit integration characteristics and can deepen our understanding of connections among crude oil futures prices.
本文旨在从相关性和风险溢出效应的角度,对欧洲成熟原油期货市场和亚洲新兴原油期货市场之间的时频联系进行实证研究。作者首先利用每日数据,采用 MODWT 方法将收益率序列分解为四个不同的时间尺度,然后利用 R-Vine Copula-CoVaR 分析了欧洲成熟原油期货市场和亚洲新兴原油期货市场之间的相关性和风险溢出效应:(a) 短期交易是原油期货市场价格波动的主要驱动力。(b) 原油期货市场呈现出一定的区域聚集特征,印度原油期货市场在连接欧美成熟原油期货市场和亚洲新兴原油期货市场方面发挥了重要作用。此外,阿曼原油也是连接亚洲新兴原油期货市场的桥梁。(c) 不同期货市场之间存在显著的尾部相关性,容易出现 "同跌不同涨 "的情况。在极端事件中,印度市场和欧美市场的波动行为高度相关。(d) 这些市场表现出不对称的双向风险溢出效应。具体而言,欧美成熟原油期货市场在极端短期事件中表现出显著的风险溢出效应,而印度原油期货市场的溢出效应相对较大。与亚洲新兴原油期货市场中的印度和日本相比,中国原油期货市场更重视市场基本面的变化,更倾向于持有长期头寸而非短期技术因素。此外,与传统方法相比,R-Vine Copula 模型具有更大的灵活性和更高的测量精度,能够更准确地捕捉多个市场之间的相关结构。所提出的方法可以为原油期货市场是否表现出一体化特征提供证据,并能加深我们对原油期货价格之间联系的理解。
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引用次数: 0
Twitter sentiment analysis and bitcoin price forecasting: implications for financial risk management 推特情感分析与比特币价格预测:对金融风险管理的启示
Pub Date : 2024-02-19 DOI: 10.1108/jrf-09-2023-0241
Tauqeer Saleem, Ussama Yaqub, Salma Zaman
PurposeThe present study distinguishes itself by pioneering an innovative framework that integrates key elements of prospect theory and the fundamental principles of electronic word of mouth (EWOM) to forecast Bitcoin/USD price fluctuations using Twitter sentiment analysis.Design/methodology/approachWe utilized Twitter data as our primary data source. We meticulously collected a dataset consisting of over 3 million tweets spanning a nine-year period, from 2013 to 2022, covering a total of 3,215 days with an average daily tweet count of 1,000. The tweets were identified by utilizing the “bitcoin” and/or “btc” keywords through the snscrape python library. Diverging from conventional approaches, we introduce four distinct variables, encompassing normalized positive and negative sentiment scores as well as sentiment variance. These refinements markedly enhance sentiment analysis within the sphere of financial risk management.FindingsOur findings highlight the substantial impact of negative sentiments in driving Bitcoin price declines, in contrast to the role of positive sentiments in facilitating price upswings. These results underscore the critical importance of continuous, real-time monitoring of negative sentiment shifts within the cryptocurrency market.Practical implicationsOur study holds substantial significance for both risk managers and investors, providing a crucial tool for well-informed decision-making in the cryptocurrency market. The implications drawn from our study hold notable relevance for financial risk management.Originality/valueWe present an innovative framework combining prospect theory and core principles of EWOM to predict Bitcoin price fluctuations through analysis of Twitter sentiment. Unlike conventional methods, we incorporate distinct positive and negative sentiment scores instead of relying solely on a single compound score. Notably, our pioneering sentiment analysis framework dissects sentiment into separate positive and negative components, advancing our comprehension of market sentiment dynamics. Furthermore, it equips financial institutions and investors with a more detailed and actionable insight into the risks associated not only with Bitcoin but also with other assets influenced by sentiment-driven market dynamics.
目的本研究开创了一个创新框架,将前景理论的关键要素与电子口碑(EWOM)的基本原理相结合,利用推特情感分析预测比特币/美元的价格波动。我们精心收集了一个由 300 多万条推文组成的数据集,时间跨度从 2013 年到 2022 年,为期 9 年,共计 3215 天,平均每天推文数为 1000 条。这些推文是通过 snscrape python 库利用 "比特币 "和/或 "btc "关键词识别出来的。与传统方法不同,我们引入了四个不同的变量,包括归一化的正面和负面情感分数以及情感方差。这些改进显著提高了金融风险管理领域的情绪分析能力。研究结果我们的研究结果凸显了负面情绪在推动比特币价格下跌方面的巨大影响,而正面情绪在促进价格上涨方面的作用则形成了鲜明对比。我们的研究对风险管理者和投资者都具有重大意义,为加密货币市场的明智决策提供了重要工具。我们提出了一个结合前景理论和 EWOM 核心原则的创新框架,通过分析 Twitter 情绪来预测比特币的价格波动。与传统方法不同的是,我们结合了不同的正面和负面情绪得分,而不是仅仅依赖单一的复合得分。值得注意的是,我们开创性的情绪分析框架将情绪分解为独立的积极和消极成分,从而推进了我们对市场情绪动态的理解。此外,它还能让金融机构和投资者更详细、更可操作地了解与比特币以及受情绪驱动的市场动态影响的其他资产相关的风险。
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引用次数: 0
Asymmetry risk and herding behavior: a quantile regression study of the Egyptian mutual funds 不对称风险和羊群行为:埃及共同基金的量子回归研究
Pub Date : 2024-02-16 DOI: 10.1108/jrf-10-2023-0252
Noura Metawa, S. Metawa, Maha Metawea, Ahmed El-Gayar
PurposeThis paper deeply investigates the herd behavior of the Egyptian mutual funds under changing and different conditions of the market pre- and post-events and compares the impact of asymmetric risk conditions on the herding behavior of the Egyptian mutual funds in both up and down markets.Design/methodology/approachWe test for the existence of herding for the whole period from 2003 to 2022, as well as for the pre-and post-different Egyptian uprising periods. We employ two well-known models, namely the cross-sectional standard deviation (CSSD) and cross-sectional absolute deviation (CSAD) models. Additionally, we use the quantile regression approach.FindingsWe find that the behavior of mutual funds does not change following the different political and social events. For the whole period, we find evidence of herding behavior using only the model of CSAD in down-market conditions. We generalize our finding to be evidence of the existence herding behavior in different quantiles, under only the down market in specific points’ pre, post or both given events throughout the whole series. Conversely, during the upper market, we show a full absence of herding behavior considering all different quantiles. When the market is down, managers are afraid of the condition of uncertainty, neglecting their own private information, avoid acting independently and consequently, following other mutual funds. When the market is up, managers become rational and act fully independent.Research limitations/implicationsFuture research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund performance and investor outcomes.Practical implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently.Social implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently. Future research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund p
目的 本文深入研究了埃及共同基金在市场前后变化和不同条件下的羊群行为,并比较了非对称风险条件对埃及共同基金在市场上涨和下跌时的羊群行为的影响。我们采用了两个著名的模型,即横截面标准偏差模型(CSSD)和横截面绝对偏差模型(CSAD)。我们发现,共同基金的行为在不同的政治和社会事件发生后并没有发生变化。在整个期间,我们仅使用 CSAD 模型就发现了在市场下行条件下存在羊群行为的证据。我们将我们的发现概括为:在整个系列中,只有在特定点的事件发生前、事件发生后或同时发生事件的情况下,在不同数量级的市场中存在羊群行为。相反,在市场上涨期间,我们发现在所有不同的量级中完全不存在羊群行为。当市场下跌时,经理们害怕不确定性条件,忽视自己的私人信息,避免独立行事,从而追随其他共同基金。研究局限/启示未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。研究发现了在高量化和低量化市场中都存在羊群行为的证据,但仅限于在下跌市场中。社会影响研究显示,尽管发生了各种政治和社会事件,共同基金的行为仍然保持一致,这表明其投资策略具有一定的弹性。研究发现,无论是在高量化还是低量化的市场中,都存在羊群行为的证据,但只有在下跌的市场中才会出现羊群行为。在这种市场下跌的情况下,基金经理似乎放弃了自己的私人信息,表现出一种从众而非独立行动的倾向。未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。 原创性/价值 本文调查了非对称风险条件下埃及共同基金的羊群行为,研究遵循了羊群行为分析和埃及共同基金的谱系,通过对货币浮动、COVID-19 和政治选举等事件前后的市场条件进行帝国分析,扩展了研究范围。该研究为新兴市场共同基金的决策者和投资者提供了大量建议。
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引用次数: 0
Asymmetry risk and herding behavior: a quantile regression study of the Egyptian mutual funds 不对称风险和羊群行为:埃及共同基金的量子回归研究
Pub Date : 2024-02-16 DOI: 10.1108/jrf-10-2023-0252
Noura Metawa, S. Metawa, Maha Metawea, Ahmed El-Gayar
PurposeThis paper deeply investigates the herd behavior of the Egyptian mutual funds under changing and different conditions of the market pre- and post-events and compares the impact of asymmetric risk conditions on the herding behavior of the Egyptian mutual funds in both up and down markets.Design/methodology/approachWe test for the existence of herding for the whole period from 2003 to 2022, as well as for the pre-and post-different Egyptian uprising periods. We employ two well-known models, namely the cross-sectional standard deviation (CSSD) and cross-sectional absolute deviation (CSAD) models. Additionally, we use the quantile regression approach.FindingsWe find that the behavior of mutual funds does not change following the different political and social events. For the whole period, we find evidence of herding behavior using only the model of CSAD in down-market conditions. We generalize our finding to be evidence of the existence herding behavior in different quantiles, under only the down market in specific points’ pre, post or both given events throughout the whole series. Conversely, during the upper market, we show a full absence of herding behavior considering all different quantiles. When the market is down, managers are afraid of the condition of uncertainty, neglecting their own private information, avoid acting independently and consequently, following other mutual funds. When the market is up, managers become rational and act fully independent.Research limitations/implicationsFuture research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund performance and investor outcomes.Practical implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently.Social implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently. Future research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund p
目的 本文深入研究了埃及共同基金在市场前后变化和不同条件下的羊群行为,并比较了非对称风险条件对埃及共同基金在市场上涨和下跌时的羊群行为的影响。我们采用了两个著名的模型,即横截面标准偏差模型(CSSD)和横截面绝对偏差模型(CSAD)。我们发现,共同基金的行为在不同的政治和社会事件发生后并没有发生变化。在整个期间,我们仅使用 CSAD 模型就发现了在市场下行条件下存在羊群行为的证据。我们将我们的发现概括为:在整个系列中,只有在特定点的事件发生前、事件发生后或同时发生事件的情况下,在不同数量级的市场中存在羊群行为。相反,在市场上行时,我们发现在所有不同的量化条件下都不存在羊群行为。当市场下跌时,经理们害怕不确定性条件,忽视自己的私人信息,避免独立行事,从而追随其他共同基金。研究局限/启示未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。研究发现了在高量化和低量化市场中都存在羊群行为的证据,但仅限于在下跌市场中。社会影响研究显示,尽管发生了各种政治和社会事件,共同基金的行为仍然保持一致,这表明其投资策略具有一定的弹性。研究发现,无论是在高量化还是低量化市场中,都存在羊群行为的证据,但这种行为只出现在下跌市场中。在这种市场下跌的情况下,基金经理似乎放弃了自己的私人信息,表现出一种从众而非独立行动的倾向。未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。 原创性/价值 本文调查了非对称风险条件下埃及共同基金的羊群行为,研究遵循了羊群行为分析和埃及共同基金的谱系,通过对货币浮动、COVID-19 和政治选举等事件前后的市场条件进行帝国分析,扩展了研究范围。该研究为新兴市场共同基金的决策者和投资者提供了大量建议。
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引用次数: 0
The determinants of compliance VAT gap 增值税遵从差距的决定因素
Pub Date : 2024-02-13 DOI: 10.1108/jrf-10-2023-0255
I. Cuceu, Decebal-Remus Florescu, V. Văidean
PurposeThis paper aims to analyze the potential variables explaining the compliance value added tax (VAT) gap, which basically represents an estimate of the unpaid VAT in the economy. A major component of compliance VAT Gap is represented by tax fraud; there exist other causes too, like insolvencies, bankruptcies, optimizations practices and maladministration. The objective of our paper is to revisit the main determinants of the VAT compliance gap for the European Union (EU)-27 member states. Using econometric modeling, our study identifies the relationship between the VAT gap and various determinants of it.Design/methodology/approachOur work focuses on the shadow economy, final consumption, VAT revenues, standard VAT rates, differences between the standard and reduced rates, economic prosperity, press freedom, political stability and others, as determinants of European VAT compliance gaps, for the 2005–2020 time interval. The methods include panel data analysis through simple and multiple regression modeling, the combinatorial approach, fixed and random effects.FindingsOur study validates the direct impact of shadow economy and the indirect impact of VAT revenues, economic prosperity and press freedom, upon VAT compliance gaps. Upon subsampling of EU member states within old and new ones, our results estimate a larger positive impact of shadow economy upon old member states, compared to new ones.Practical implicationsThe policy implications include leverage effects of governments acting upon a reduction in shadow economy phenomena and boosts of economic development, political stability and press freedom, in order to attain the contraction of compliance VAT gaps.Originality/valueOur paper sheds light in a poorly explored scientific area, that of the determinants of VAT gap, especially in relationship with financial and economic crime phenomena.
目的 本文旨在分析解释增值税合规性缺口的潜在变量,该缺口基本上代表了经济中未缴纳增值税的估计值。增值税合规性缺口的一个主要组成部分是税收欺诈,但也存在其他原因,如资不抵债、破产、优化做法和管理不善。本文旨在重新审视欧盟 27 个成员国增值税合规性差距的主要决定因素。我们的研究采用计量经济学建模方法,确定了增值税差距与各种决定因素之间的关系。我们的研究重点是 2005-2020 年间作为欧洲增值税合规差距决定因素的影子经济、最终消费、增值税收入、增值税标准税率、标准税率与减税税率之间的差异、经济繁荣程度、新闻自由、政治稳定性及其他因素。我们的研究验证了影子经济的直接影响以及增值税收入、经济繁荣和新闻自由对增值税遵从差距的间接影响。我们的研究结果估计,与新老欧盟成员国相比,影子经济对老成员国的积极影响更大。政策含义包括政府采取行动减少影子经济现象,促进经济发展、政治稳定和新闻自由,以实现缩小增值税合规差距的杠杆效应。
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引用次数: 0
The determinants of compliance VAT gap 增值税遵从差距的决定因素
Pub Date : 2024-02-13 DOI: 10.1108/jrf-10-2023-0255
I. Cuceu, Decebal-Remus Florescu, V. Văidean
PurposeThis paper aims to analyze the potential variables explaining the compliance value added tax (VAT) gap, which basically represents an estimate of the unpaid VAT in the economy. A major component of compliance VAT Gap is represented by tax fraud; there exist other causes too, like insolvencies, bankruptcies, optimizations practices and maladministration. The objective of our paper is to revisit the main determinants of the VAT compliance gap for the European Union (EU)-27 member states. Using econometric modeling, our study identifies the relationship between the VAT gap and various determinants of it.Design/methodology/approachOur work focuses on the shadow economy, final consumption, VAT revenues, standard VAT rates, differences between the standard and reduced rates, economic prosperity, press freedom, political stability and others, as determinants of European VAT compliance gaps, for the 2005–2020 time interval. The methods include panel data analysis through simple and multiple regression modeling, the combinatorial approach, fixed and random effects.FindingsOur study validates the direct impact of shadow economy and the indirect impact of VAT revenues, economic prosperity and press freedom, upon VAT compliance gaps. Upon subsampling of EU member states within old and new ones, our results estimate a larger positive impact of shadow economy upon old member states, compared to new ones.Practical implicationsThe policy implications include leverage effects of governments acting upon a reduction in shadow economy phenomena and boosts of economic development, political stability and press freedom, in order to attain the contraction of compliance VAT gaps.Originality/valueOur paper sheds light in a poorly explored scientific area, that of the determinants of VAT gap, especially in relationship with financial and economic crime phenomena.
目的 本文旨在分析解释增值税合规性缺口的潜在变量,该缺口基本上代表了经济中未缴纳增值税的估计值。增值税合规性缺口的一个主要组成部分是税收欺诈,但也存在其他原因,如资不抵债、破产、优化做法和管理不善。本文旨在重新审视欧盟 27 个成员国增值税合规性差距的主要决定因素。我们的研究采用计量经济学建模方法,确定了增值税差距与各种决定因素之间的关系。我们的研究重点是 2005-2020 年间作为欧洲增值税合规差距决定因素的影子经济、最终消费、增值税收入、增值税标准税率、标准税率与减税税率之间的差异、经济繁荣程度、新闻自由、政治稳定性及其他因素。我们的研究验证了影子经济的直接影响以及增值税收入、经济繁荣和新闻自由对增值税遵从差距的间接影响。我们的研究结果估计,与新老欧盟成员国相比,影子经济对老成员国的积极影响更大。政策含义包括政府采取行动减少影子经济现象,促进经济发展、政治稳定和新闻自由,以实现缩小增值税合规差距的杠杆效应。
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引用次数: 0
The impact of climate change news on the US stock market 气候变化新闻对美国股市的影响
Pub Date : 2024-02-13 DOI: 10.1108/jrf-06-2023-0133
E. Fedorova, Polina Iasakova
PurposeThis paper aims to investigate the impact of climate change news on the dynamics of US stock indices.Design/methodology/approachThe empirical basis of the study was 3,209 news articles. Sentiment analysis was performed by a pre-trained bidirectional FinBERT neural network. Thematic modeling is based on the neural network, BERTopic.FindingsThe results show that news sentiment can influence the dynamics of stock indices. In addition, five main news topics (finance and politics natural disasters and consequences industrial sector and Innovations activism and culture coronavirus pandemic) were identified, which showed a significant impact on the financial market.Originality/valueFirst, we extend the theoretical concepts. This study applies signaling theory and overreaction theory to the US stock market in the context of climate change. Second, in addition to the news sentiment, the impact of major news topics on US stock market returns is examined. Third, we examine the impact of sentimental and thematic news variables on US stock market indicators of economic sectors. Previous works reveal the impact of climate change news on specific sectors of the economy. This paper includes stock indices of the economic sectors most related to the topic of climate change. Fourth, the research methodology consists of modern algorithms. An advanced textual analysis method for sentiment classification is applied: a pre-trained bidirectional FinBERT neural network. Modern thematic modeling is carried out using a model based on the neural network, BERTopic. The most extensive topics are “finance and politics of climate change” and “natural disasters and consequences.”
本文旨在研究气候变化新闻对美国股票指数动态的影响。研究的实证基础是 3209 篇新闻报道。情感分析通过预先训练的双向 FinBERT 神经网络进行。研究结果结果表明,新闻情绪可以影响股票指数的动态。此外,还确定了五大新闻主题(金融和政治 自然灾害及后果 工业部门和创新 激进主义和文化 冠状病毒大流行),这些主题对金融市场有显著影响。本研究将信号理论和过度反应理论应用于气候变化背景下的美国股市。其次,除新闻情绪外,我们还考察了重大新闻话题对美国股市回报的影响。第三,我们研究了情绪性和主题性新闻变量对美国股市经济部门指标的影响。以往的研究揭示了气候变化新闻对特定经济部门的影响。本文包括与气候变化主题最相关的经济部门的股票指数。第四,研究方法包括现代算法。本文采用了一种先进的情感分类文本分析方法:预先训练的双向 FinBERT 神经网络。使用基于神经网络的 BERTopic 模型进行现代主题建模。最广泛的主题是 "气候变化的金融与政治 "和 "自然灾害及其后果"。
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引用次数: 0
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The Journal of Risk Finance
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