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Financial literacy bias: a comparison between students and nonstudents 金融知识偏差:学生与非学生之间的比较
IF 2 Q2 BUSINESS, FINANCE Pub Date : 2024-01-16 DOI: 10.1108/rbf-01-2023-0023
Helder Sebastião, Nuno Silva, Pedro Torres, Pedro Godinho
<h3>Purpose</h3><p>This work uses survey data from the Portuguese Securities Market Commission (Comissão de Mercado de Valores Mobiliários – CMVM) to examine financial literacy and literacy bias. The main objective of this study is to shed light on this issue by identifying the individual characteristics that are associated with financial literacy, namely overconfidence and underconfidence, which in turn might help explain individuals' financial decisions. The study distinguishes two groups, i.e. students and nonstudents, and considers several characteristics that are usually employed in this stream of research.</p><!--/ Abstract__block --><h3>Design/methodology/approach</h3><p>The data are based on a survey conducted by a partnership between the CMVM and a consortium of Portuguese universities. This paper has a three-fold aim. First, it studies the main individual features associated with objective financial literacy. Second, it analyzes the relationship between those variables and the bias between self-perceived and objective literacy, distinguishing overconfidence and underconfidence. Third, and most originally, this framework was also used to examine the differences between students and nonstudents. Those aims are pursued using cross-sectional ordinary least squares (OLS) regressions, except for the study of the literacy bias, for which the authors use an ordered probit.</p><!--/ Abstract__block --><h3>Findings</h3><p>Literacy is higher in individuals of the male gender who are older, have higher incomes, live in metropolitan areas, are highly educated, have a field of study related to finance and have high self-perceived literacy. Younger people are more overconfident. Unconditionally, women are less overconfident than men, but conditionally, they overestimate their knowledge. People holding securities and with a field of study related to finance are more overconfident. The gender effect is mainly driven by students, and the impact of a field of study and of holding securities on overconfidence decreases and increases, respectively, for students. The results highlight the importance of financial education.</p><!--/ Abstract__block --><h3>Research limitations/implications</h3><p>Due to the way that the questionnaire was made available, there is no guarantee that the sample is representative of the Portuguese general population, or, for that matter, representative of the typical Portuguese retail investors or households. Also, there is no guarantee that the same individual did not answer the questionnaire more than once, although this is highly improbable. The link to the online questionnaire was only transmitted within e-mail databases owned by the CMVM and Portuguese universities, so the authors cannot guarantee its unbiasedness.</p><!--/ Abstract__block --><h3>Practical implications</h3><p>The authors' results may help the National Plan for Financial Education (the acronym in Portuguese is PNFF) fine-tune the required actions towar
目的 本研究利用葡萄牙证券市场委员会(Comissão de Mercado de Valores Mobiliários--CMVM)的调查数据,对金融知识和知识偏差进行研究。本研究的主要目的是通过识别与金融素养相关的个人特征(即过度自信和信心不足)来揭示这一问题,这反过来可能有助于解释个人的金融决策。本研究区分了两个群体,即学生和非学生,并考虑了该研究领域通常采用的几个特征。本文有三重目的。首先,研究与客观金融知识相关的主要个人特征。其次,本文分析了这些变量与自我认知和客观素养之间偏差的关系,区分了过度自信和信心不足。第三,也是最重要的一点,这个框架还被用来研究学生和非学生之间的差异。除了对识字偏差的研究外,作者采用了有序 probit 法,通过横截面普通最小二乘法(OLS)回归来实现这些目标。研究结果年龄较大、收入较高、居住在大都市地区、受过高等教育、所学专业与金融相关且自我感觉识字率较高的男性个体的识字率较高。年轻人则更加过度自信。在无条件的情况下,女性比男性更不自信,但在有条件的情况下,她们会高估自己的知识水平。持有证券和所学专业与金融有关的人更自信。性别效应主要是由学生驱动的,对于学生来说,所学专业和持有证券对过度自信的影响分别减小和增大。研究的局限性/影响由于问卷调查的方式,不能保证样本代表葡萄牙的一般人口,或代表典型的葡萄牙散户投资者或家庭。此外,也不能保证同一个人没有多次回答问卷,尽管这种情况极不可能发生。作者的研究结果可能有助于《国家金融教育计划》(葡萄牙语缩写为 PNFF)针对不同的目标群体调整所需的行动,最重要的是,强调不同的群体可能需要不同的方法,以缩小客观素养与感知素养之间的差距。社会影响这项研究区分了学生和非学生这两个群体,为政策制定者提供了更多的启示,指导他们如何组织金融教育以提高个人的金融行为。对于葡萄牙这样一个在欧元区客观金融知识水平最低的国家来说,这一点尤为重要。原创性/价值本研究通过揭示与个人过度自信和信心不足相关的因素,为金融知识文献,尤其是关注心理偏差的研究流做出了贡献。区别对待学生和非学生提供了更多的见解,这些见解可能会指导政策制定者如何构建金融教育,以加强个人的金融行为。
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引用次数: 0
Exogenous shock: hierarchical effect of the industrial entrepreneur confidence in the mist of the COVID-19 pandemic 外生冲击:新冠肺炎大流行迷雾中工业企业家信心的等级效应
IF 2 Q2 BUSINESS, FINANCE Pub Date : 2023-12-05 DOI: 10.1108/rbf-08-2023-0226
Elimar Veloso Conceição, Fabiano Guasti Lima

Purpose

In the context of investment decisions, the intricate interplay between exogenous shocks and their influence on investor confidence significantly shapes their behaviors and, consequently, their outcomes. Investment decisions are influenced by uncertainties, exogenous shocks as well as the sentiments and confidence of investors, factors typically overlooked by decision-makers. This study will meticulously examine these multifaceted influences and discern their intricate hierarchical nuances in the sentiments of industrial entrepreneurs during the COVID-19 pandemic.

Design/methodology/approach

Employing the robust framework of the generalized linear latent and mixed models (GLLAMM), this research will thoroughly investigate individual and group idiosyncrasies present in diverse data compilations. Additionally, it will delve deeply into the exogeneity of disturbances across different sectors and regions.

Findings

Relevant insights gleaned from this research elucidate the adverse influence of exogenous forces, including pandemics and financial crises, on the confidence of industrial entrepreneurs. Furthermore, a significant discovery emerges in the regional analysis, revealing a notable homogeneity in the propagation patterns of industrial entrepreneurs' perceptions within the sectoral and regional context. This finding suggests a mitigation of regional effects in situations of global exogenous shocks.

Originality/value

Within the realm of academic inquiry, this study offers an innovative perspective in unveiling the intricate interaction between external shocks and their significant impacts on the sentiment of industrial entrepreneurs. Furthermore, the utilization of the robust GLLAMM captures the hierarchical dimension of this relationship, enhancing the precision of analyses. This approach provides a significant impetus for data-informed strategic directions.

在投资决策的背景下,外生冲击及其对投资者信心的影响之间错综复杂的相互作用显著地塑造了他们的行为,从而影响了他们的结果。投资决策受到不确定性、外部冲击以及投资者情绪和信心的影响,而这些因素通常被决策者所忽视。本研究将仔细研究这些多方面的影响,并在COVID-19大流行期间发现工业企业家情绪中复杂的层次差异。设计/方法/方法采用广义线性潜在和混合模型(GLLAMM)的稳健框架,本研究将彻底调查不同数据汇编中存在的个人和群体特质。此外,它将深入研究不同部门和地区的干扰的外生性。从这项研究中收集到的相关见解阐明了包括流行病和金融危机在内的外部力量对工业企业家信心的不利影响。此外,在区域分析中出现了一个重大发现,揭示了工业企业家观念在部门和区域范围内传播模式的显著同质性。这一发现表明,在全球外生冲击的情况下,区域影响有所缓解。原创性/价值在学术研究的范围内,本研究提供了一个创新的视角,揭示了外部冲击及其对工业企业家情绪的重大影响之间复杂的相互作用。此外,利用稳健的GLLAMM捕获了这种关系的层次维度,提高了分析的精度。这种方法为基于数据的战略方向提供了重要推动力。
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引用次数: 0
How do personality traits affect investors' decision on crypto market including cryptocurrencies and NFTs? 人格特征如何影响投资者对加密市场(包括加密货币和nft)的决策?
IF 2 Q2 BUSINESS, FINANCE Pub Date : 2023-12-05 DOI: 10.1108/rbf-03-2023-0075
Ji Luo, Qingning Cao, Shuguang Zhang

Purpose

The purpose of the research paper is to investigate the relationship between personality traits and investment decisions in the crypto market, including cryptocurrencies and NFTs. The study aims to explore the effect of dark personalities and the big five personalities on investment decisions in the crypto market.

Design/methodology/approach

The research was conducted through two online questionnaire studies. In Study 1, data were collected from the general public, while in Study 2, data were collected from crypto investors. The researchers analyzed the effect of dark personalities and the big five personalities on investment decisions in the crypto market.

Findings

The present research found that Machiavellianism, narcissism, psychopath, sadism and extraversion have positive effects on having crypto investments. In addition, focusing on actual crypto investors, the present paper showed that personalities including Machiavellianism, narcissism, psychopath, consciousness and extraversion have statistically significant effect on investment decisions such as making investments in Bitcoin.

Originality/value

The study is original in exploring the relationship between personality traits and investment decisions in the newly emerging crypto market, including cryptocurrencies and NFTs. The research provides insights into how different personality traits affect investment decisions in the crypto market, which can be valuable for investors in making informed decisions.

研究论文的目的是研究人格特质与加密市场投资决策之间的关系,包括加密货币和nft。该研究旨在探讨黑暗人格和五大人格对加密市场投资决策的影响。设计/方法/方法本研究通过两项在线问卷调查进行。在研究1中,数据收集自普通公众,而在研究2中,数据收集自加密投资者。研究人员分析了黑暗人格和五大人格对加密市场投资决策的影响。目前的研究发现,马基雅维利主义、自恋、精神病患者、虐待狂和外向性对加密货币投资有积极影响。此外,本文以实际的加密货币投资者为研究对象,表明马基雅维利主义、自恋、精神病患者、意识和外向性等人格对投资比特币等投资决策有统计学上显著的影响。该研究在探索新兴加密市场(包括加密货币和nft)中人格特征与投资决策之间的关系方面具有独创性。该研究提供了不同性格特征如何影响加密市场投资决策的见解,这对投资者做出明智决策很有价值。
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引用次数: 0
Familiarity bias in direct stock investment by individual investors 个人投资者直接股票投资中的熟悉度偏差
IF 2 Q2 BUSINESS, FINANCE Pub Date : 2023-11-23 DOI: 10.1108/rbf-03-2023-0074
Shan Lei, Ani Manakyan Mathers

Purpose

This study examines the relationship between investors' familiarity bias, including the home bias and endowment bias, and their financial situations, expectations and personal characteristics.

Design/methodology/approach

Using the 2019 Survey of Consumer Finances, the authors utilize an ordinary least squares regression to identify the presence of endowment bias and home bias in individual investors' direct stock holdings and use a Heckman selection model to examine determinants of the extent of endowment bias and home bias.

Findings

This study finds that investors with higher income and more education, men, non-white investors and people with greater risk tolerance are actually at a greater risk of endowment bias. This study also identifies a profile of investors that are more likely to have a home bias: with less financial sophistication, lower net worth, older, female, more risk-averse, with a positive expectation about the domestic economy and a relatively shorter investment horizon.

Originality/value

This paper is among the first to use US investors' directly reported stock holdings to examine the individual characteristics that are correlated with greater familiarity bias, providing financial professionals with information about how to allocate their limited time in providing education to a variety of clients.

目的研究投资者的熟悉偏差(包括家乡偏差和禀赋偏差)与其财务状况、预期和个人特征之间的关系。利用2019年消费者财务调查,作者利用普通最小二乘回归来确定个人投资者直接持股中禀赋偏差和家乡偏差的存在,并使用Heckman选择模型来检查禀赋偏差和家乡偏差程度的决定因素。本研究发现,收入较高、受教育程度较高的投资者、男性、非白人投资者以及风险承受能力较强的人,实际上存在更大的禀赋偏差风险。这项研究还确定了更可能有本土偏见的投资者的概况:金融经验较差,净资产较低,年龄较大,女性,更厌恶风险,对国内经济抱有积极预期,投资期限相对较短。原创性/价值本文是第一批使用美国投资者直接报告的股票持有量来研究与更大的熟悉偏差相关的个体特征的论文之一,为金融专业人士提供了有关如何分配他们为各种客户提供教育的有限时间的信息。
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引用次数: 0
Risk preference, payday loans and other alternative financial services 风险偏好,发薪日贷款和其他替代金融服务
IF 2 Q2 BUSINESS, FINANCE Pub Date : 2023-11-17 DOI: 10.1108/rbf-04-2023-0099
Song Wang

Purpose

The purpose of this paper is to examine how individual risk preference influences the borrowing of payday loans – a prevalent type of cash loan in the USA with exorbitantly high-interest rates. Additionally, this paper tests how risk preference determines other alternative financial services (AFS), including pawn shops, rent-to-own purchases, title loans, etc.

Design/methodology/approach

The author applies Probit and Tobit regressions to test the relationship between individual risk preference and payday borrowing, based on the state-by-state survey data from National Financial Capability Study (NFCS) sponsored by Financial Industry Regulatory Authority (FINRA) Investor Education Foundation.

Findings

Individuals with higher risk tolerance are more likely to borrow payday loans and other AFS, after controlling for financial situation, financial literacy, overconfidence and demographic features.

Originality/value

This paper is the first to study risk preference as an explanation to the high cost and widely used payday loan services in the United States of America. This study provides evidence that these cash loans are determined by inherent human characteristics. The finding provides new insight for the policymakers and regulators in the consumer debt market.

本文的目的是研究个人风险偏好如何影响发薪日贷款的借贷-一种在美国普遍存在的现金贷款类型,利率过高。此外,本文还测试了风险偏好如何决定其他替代金融服务(AFS),包括典当行、以租换拥有的购买、产权贷款等。设计/方法/方法作者应用Probit和Tobit回归来测试个人风险偏好与发薪日借款之间的关系。基于由金融业监管局(FINRA)投资者教育基金会赞助的国家金融能力研究(NFCS)的各州调查数据。研究发现,在控制了财务状况、金融知识、过度自信和人口特征之后,风险承受能力较高的个人更有可能借入发薪日贷款和其他AFS。原创性/价值本文首次研究了风险偏好对美国高成本和广泛使用的发薪日贷款服务的解释。这项研究提供的证据表明,这些现金贷款是由人类固有的特征决定的。这一发现为消费者债务市场的政策制定者和监管者提供了新的视角。
{"title":"Risk preference, payday loans and other alternative financial services","authors":"Song Wang","doi":"10.1108/rbf-04-2023-0099","DOIUrl":"https://doi.org/10.1108/rbf-04-2023-0099","url":null,"abstract":"<h3>Purpose</h3>\u0000<p>The purpose of this paper is to examine how individual risk preference influences the borrowing of payday loans – a prevalent type of cash loan in the USA with exorbitantly high-interest rates. Additionally, this paper tests how risk preference determines other alternative financial services (AFS), including pawn shops, rent-to-own purchases, title loans, etc.</p><!--/ Abstract__block -->\u0000<h3>Design/methodology/approach</h3>\u0000<p>The author applies Probit and Tobit regressions to test the relationship between individual risk preference and payday borrowing, based on the state-by-state survey data from National Financial Capability Study (NFCS) sponsored by Financial Industry Regulatory Authority (FINRA) Investor Education Foundation.</p><!--/ Abstract__block -->\u0000<h3>Findings</h3>\u0000<p>Individuals with higher risk tolerance are more likely to borrow payday loans and other AFS, after controlling for financial situation, financial literacy, overconfidence and demographic features.</p><!--/ Abstract__block -->\u0000<h3>Originality/value</h3>\u0000<p>This paper is the first to study risk preference as an explanation to the high cost and widely used payday loan services in the United States of America. This study provides evidence that these cash loans are determined by inherent human characteristics. The finding provides new insight for the policymakers and regulators in the consumer debt market.</p><!--/ Abstract__block -->","PeriodicalId":44559,"journal":{"name":"Review of Behavioral Finance","volume":"175 11 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sentiment investor, exchange rates, geopolitical risk and developing stock market: evidence of co-movements in the time-frequency domain during RussiaUkraine war 情绪投资者、汇率、地缘政治风险和发展中的股票市场:俄乌战争期间时频域联合运动的证据
Q2 BUSINESS, FINANCE Pub Date : 2023-11-16 DOI: 10.1108/rbf-04-2023-0119
Fatma Hachicha
Purpose The aim of this paper is threefold: (1) to develop a new measure of investor sentiment rational (ISR) of developing countries by applying principal component analysis (PCA), (2) to investigate co-movements between the ten developing stock markets, the sentiment investor's, exchange rates and geopolitical risk (GPR) during Russian invasion of Ukraine in 2022, (3) to explore the key factors that might affect exchange market and capital market before and mainly during Russia–Ukraine war period. Design/methodology/approach The wavelet approach and the multivariate wavelet coherence (MWC) are applied to detect the co-movements on daily data from August 2019 to December 2022. Value-at-risk (VaR) and conditional value-at-risk (CVaR) are used to assess the systemic risks of exchange rate market and stock market return in the developing market. Findings Results of this study reveal (1) strong interdependence between GPR, investor sentiment rational (ISR), stock market index and exchange rate in short- and long-terms in most countries, as inferred from (WTC) analysis. (2) There is evidence of strong short-term co-movements between ISR and exchange rates, with ISR leading. (3) Multivariate coherency shows strong contributions of ISR and GPR index to stock market index and exchange rate returns. The findings signal the attractiveness of the Vietnamese dong, Malaysian ringgits and Tunisian dinar as a hedge for currency portfolios against GPR. The authors detect a positive connectedness in the short term between all pairs of the variables analyzed in most countries. (4) Both foreign exchange and equity markets are exposed to higher levels of systemic risk in the period of the Russian invasion of Ukraine. Originality/value This study provides information that supports investors, regulators and executive managers in developing countries. The impact of sentiment investor with GPR intensified the co-movements of stocks market and exchange market during 2021–2022, which overlaps with period of the Russian invasion of Ukraine.
本文的目的有三个:(1)运用主成分分析(PCA)建立了衡量发展中国家投资者情绪理性(ISR)的新测度;(2)考察了俄罗斯2022年入侵乌克兰期间十个发展中国家股票市场、投资者情绪、汇率和地缘政治风险(GPR)之间的协同运动;(3)探讨了俄乌战争前和主要在俄乌战争期间可能影响外汇市场和资本市场的关键因素。设计/方法/方法应用小波方法和多元小波相干性(MWC)检测2019年8月至2022年12月每日数据的共同运动。利用风险价值(VaR)和条件风险价值(CVaR)来评估发展中市场中汇率市场和股票市场收益的系统性风险。本研究结果显示:(1)根据(WTC)分析,在大多数国家,GPR、投资者情绪理性(ISR)、股票市场指数和汇率在短期和长期都存在较强的相互依存关系。(2)有证据表明,以ISR为主导,ISR与汇率之间存在强烈的短期协同波动。(3)多元一致性表明,ISR和GPR指数对股市指数和汇率收益的贡献较大。调查结果表明,越南盾、马来西亚林吉特和突尼斯第纳尔作为货币组合对冲GPR风险的吸引力。作者发现,在大多数国家所分析的所有变量对之间的短期正相关。(4)在俄罗斯入侵乌克兰期间,外汇和股票市场都暴露在更高水平的系统性风险之下。原创性/价值本研究为发展中国家的投资者、监管机构和执行经理提供了信息支持。情绪投资者与探地雷达的影响加剧了股票市场和交易所市场在2021-2022年期间的协同运动,这与俄罗斯入侵乌克兰的时期重叠。
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引用次数: 0
Investor sentiments revisited: negligence of stock-level sentiments may be a mistake 重新审视投资者情绪:忽视股市情绪可能是个错误
Q2 BUSINESS, FINANCE Pub Date : 2023-11-07 DOI: 10.1108/rbf-02-2023-0037
Te-Kuan Lee, Askar Koshoev
Purpose The primary objective of this research is to provide evidence that there are two distinct layers of investor sentiments that can affect asset valuation models. The first is general market-wide sentiments, while the second is biased approaches toward specific assets. Design/methodology/approach To achieve the goal, the authors conducted a multi-step analysis of stock returns and constructed complex sentiment indices that reflect the optimism or pessimism of stock market participants. The authors used panel regression with fixed effects and a sample of the US stock market to improve the explanatory power of the three-factor models. Findings The analysis showed that both market-level and stock-level sentiments have significant contributions, although they are not equal. The impact of stock-level sentiments is more profound than market-level sentiments, suggesting that neglecting the stock-level sentiment proxies in asset valuation models may lead to severe deficiencies. Originality/value In contrast to previous studies, the authors propose that investor sentiments should be measured using a multi-level factor approach rather than a single-factor approach. The authors identified two distinct levels of investor sentiment: general market-wide sentiments and individual stock-specific sentiments.
本研究的主要目的是提供证据,证明存在两个不同层次的投资者情绪可以影响资产估值模型。第一种是整体市场情绪,第二种是对特定资产的偏见。为了实现这一目标,作者对股票收益进行了多步分析,并构建了反映股市参与者乐观或悲观情绪的复杂情绪指数。作者使用固定效应面板回归和美国股市样本来提高三因素模型的解释力。结果分析表明,市场层面和股票层面的情绪对企业绩效的贡献均显著,但两者的贡献并不相等。股票水平情绪的影响比市场水平情绪的影响更深远,这表明在资产估值模型中忽视股票水平情绪代理可能会导致严重的缺陷。原创性/价值与以往的研究相反,作者提出投资者情绪应该使用多层次因素方法而不是单因素方法来衡量。作者将投资者情绪划分为两个不同的层次:整体市场情绪和个股情绪。
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引用次数: 0
Analyst coverage and the probability of stock price crash and jump 分析师的报道与股价暴跌和跳涨的概率有关
Q2 BUSINESS, FINANCE Pub Date : 2023-11-07 DOI: 10.1108/rbf-06-2022-0156
Mohammed Bouaddi, Omar Farooq, Catalina Hurwitz
Purpose The aim of this paper is to document the effect of analyst coverage on the ex ante probability of stock price crash and the ex ante probability stock price jump. Design/methodology/approach This paper uses the data of non-financial firms from France to test the arguments presented in this paper during the period between 1997 and 2019. The paper also uses flexible quadrants copulas to compute the ex ante probabilities of crashes and jumps. Findings The results show that the extent of analyst coverage is positively associated with the ex ante probability of crash and negatively associated with the ex ante probability of jump. The results remain qualitatively the same after several sensitivity checks. The results also show that the relationship between the extent of analyst coverage and the probability of cash and the probability of jump holds when ex post probability of stock price crash and stock price jump is used. Originality/value Unlike most of the earlier papers on this topic, this paper uses the ex ante probability of crash and jump. This proxy is better suited than the ones used in the prior literature because it is a forward-looking measure.
本文的目的是为了证明分析师覆盖率对股价崩盘的事前概率和股价跳涨的事前概率的影响。本文使用法国非金融公司的数据来检验本文在1997年至2019年期间提出的论点。本文还使用灵活的象限关联来计算崩溃和跳跃的事前概率。结果表明,分析师的覆盖程度与股灾前概率呈正相关,与股灾前概率呈负相关。经过多次灵敏度检查,结果在质量上保持一致。研究结果还表明,当事后股价暴跌和股价跃升的概率分别出现时,分析师覆盖范围与现金兑现概率和股价跃升概率之间的关系仍然成立。独创性/价值与大多数关于这一主题的早期论文不同,本文使用了碰撞和跳跃的事前概率。该代理比先前文献中使用的代理更适合,因为它是前瞻性的测量。
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引用次数: 0
Investigation of herding behavior using machine learning models 利用机器学习模型研究羊群行为
Q2 BUSINESS, FINANCE Pub Date : 2023-11-01 DOI: 10.1108/rbf-05-2023-0121
Muhammad Asim, Muhammad Yar Khan, Khuram Shafi
Purpose The study aims to investigate the presence of herding behavior in the stock market of UK with a special emphasis on news sentiment regarding the economy. The authors focus on the news sentiment because in the current digital era, investors take their decision making on the basis of current trends projected by news and media platforms. Design/methodology/approach For empirical modeling, the authors use machine learning models to investigate the presence of herding behavior in UK stock market for the period starting from 2006 to 2021. The authors use support vector regression, single layer neural network and multilayer neural network models to predict the herding behavior in the stock market of the UK. The authors estimate the herding coefficients using all the models and compare the findings with the linear regression model. Findings The results show a strong evidence of herding behavior in the stock market of the UK during different time regimes. Furthermore, when the authors incorporate the economic uncertainty news sentiment in the model, the results show a significant improvement. The results of support vector regression, single layer perceptron and multilayer perceptron model show the evidence of herding behavior in UK stock market during global financial crises of 2007–08 and COVID’19 period. In addition, the authors compare the findings with the linear regression which provides no evidence of herding behavior in all the regimes except COVID’19. The results also provide deep insights for both individual investors and policy makers to construct efficient portfolios and avoid market crashes, respectively. Originality/value In the existing literature of herding behavior, news sentiment regarding economic uncertainty has not been used before. However, in the present era this parameter is quite critical in context of market anomalies hence and needs to be investigated. In addition, the literature exhibits varying results about the existence of herding behavior when different methodologies are used. In this context, the use of machine learning models is quite rare in the herding literature. The machine learning models are quite robust and provide accurate results. Therefore, this research study uses three different models, i.e. single layer perceptron model, multilayer perceptron model and support vector regression model to investigate the herding behavior in the stock market of the UK. A comparative analysis is also presented among the results of all the models. The study sheds light on the importance of economic uncertainty news sentiment to predict the herding behavior.
本研究旨在调查羊群行为在英国股票市场的存在,特别强调有关经济的新闻情绪。作者之所以关注新闻情绪,是因为在当前的数字时代,投资者会根据新闻和媒体平台预测的当前趋势做出决策。设计/方法/方法对于实证建模,作者使用机器学习模型来调查2006年至2021年期间英国股市中羊群行为的存在。运用支持向量回归、单层神经网络和多层神经网络模型对英国股票市场的羊群行为进行了预测。作者使用所有模型估计放牧系数,并将结果与线性回归模型进行比较。研究结果显示,在不同的时间制度下,羊群行为在英国股票市场的有力证据。此外,当作者将经济不确定性新闻情绪纳入模型时,结果显示出显着的改善。支持向量回归、单层感知器和多层感知器模型的结果显示了2007-08年全球金融危机和2019冠状病毒病期间英国股市羊群行为的证据。此外,作者将这些发现与线性回归进行了比较,线性回归没有提供除COVID - 19外所有制度中羊群行为的证据。研究结果也为个人投资者和政策制定者构建有效的投资组合和避免市场崩溃提供了深刻的见解。在现有的羊群行为文献中,关于经济不确定性的新闻情绪尚未被使用。然而,在当前这个时代,这个参数在市场异常的背景下是相当关键的,因此需要进行调查。此外,当使用不同的方法时,文献展示了关于羊群行为存在的不同结果。在这种情况下,机器学习模型的使用在羊群文献中是相当罕见的。机器学习模型非常健壮,并提供准确的结果。因此,本研究采用单层感知机模型、多层感知机模型和支持向量回归模型三种不同的模型来研究英国股票市场的羊群行为。并对各模型的计算结果进行了比较分析。该研究揭示了经济不确定性新闻情绪对羊群行为预测的重要性。
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引用次数: 0
The value and growth effect in the Vietnamese stock market: a mispricing explanation 越南股市的价值与成长效应:一个错误定价的解释
Q2 BUSINESS, FINANCE Pub Date : 2023-10-24 DOI: 10.1108/rbf-04-2023-0090
Le Quy Duong
Purpose Although the value effect is comprehensively investigated in developed markets, the number of studies examining the Vietnamese stock market is limited. Hence, the first aim of this research is to provide empirical evidence regarding returns on value and growth stocks in Vietnam. The second aim is to explain abnormal returns on Vietnamese growth and value stocks using both risk-based and behavioral points of view. Design/methodology/approach From the risk-based explanation, the Capital Asset Pricing Model (CAPM), Fama–French three- and five-factor models are estimated. From the behavioral explanation, to construct the mispricing factor, this paper relies on the method of Rhodes-Kropf et al. (2005), one of the most popular mispricing estimations in the financial literature with numerous citations (Jaffe et al ., 2020). Findings While the CAPM and Fama–French multifactor models cannot capture returns on growth and value stocks, a three-factor model with the mispricing factor has done an excellent job in explaining their returns. Three out of four Fama–French mimic factors do not contain additional information on expected returns. Their risk premiums are also statistically insignificant according to the Fama–MacBeth second-stage regression. By contrast, both robustness tests prove the explanatory power of a three-factor model with mispricing. Taken together, mispricing plays an essential role in explaining returns on Vietnamese growth and value stocks, consistent with the behavioral point of view. Originality/value There are several value-enhancing aspects in the field of market finance. First, this paper contributes to the literature of value effect in emerging markets. While the evidence of value effect is obvious in numerous developed as well as international markets, both growth and value effects are discovered in Vietnam. Second, the explanatory power of Fama–French multifactor models is evaluated in the Vietnamese context. Finally, to the best of the author's knowledge, this is the first paper that incorporates the mispricing estimation of Rhodes-Kropf et al. (2005) into the asset pricing model in Vietnam.
虽然价值效应在发达市场得到了全面的调查,但研究越南股票市场的研究数量有限。因此,本研究的第一个目的是提供有关越南价值股和成长股回报的经验证据。第二个目的是用风险和行为的观点来解释越南成长型和价值型股票的异常回报。从基于风险的解释,估计了资本资产定价模型(CAPM), Fama-French三因素模型和五因素模型。从行为解释来看,本文依赖于Rhodes-Kropf et al.(2005)的方法来构建错误定价因子,这是金融文献中最流行的错误定价估计之一,被大量引用(Jaffe et al., 2020)。虽然CAPM和Fama-French多因素模型不能反映成长型和价值型股票的回报,但包含错误定价因素的三因素模型在解释它们的回报方面做得很好。四分之三的Fama-French模拟因子不包含预期收益的额外信息。根据Fama-MacBeth第二阶段回归,他们的风险溢价在统计学上也不显著。相比之下,两个稳健性检验都证明了具有错误定价的三因素模型的解释力。综上所述,错误定价在解释越南成长型和价值型股票的回报方面起着至关重要的作用,这与行为观点是一致的。在市场金融领域有几个提升价值的方面。首先,本文对新兴市场价值效应的文献进行了贡献。虽然价值效应的证据在许多发达市场和国际市场都很明显,但在越南发现了增长和价值效应。其次,评估Fama-French多因素模型在越南情境下的解释力。最后,据作者所知,这是第一篇将Rhodes-Kropf等人(2005)的错误定价估计纳入越南资产定价模型的论文。
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Review of Behavioral Finance
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