投资者情绪异质性能影响股价崩盘风险吗?

本文选取1999—2016年沪深A股市场交易数据以及与投资者情绪相关的数据,从市场层面研究了股价崩盘风险与投资者情绪之间的关系。实证研究发现,投资者情绪是股价崩盘风险的单向格兰杰原因,且股价崩盘风险往往要滞后于投资者情绪3期左右。进一步研究表明,投资者情绪对股价崩盘风险具有非对称性影响,即乐观情绪对崩盘风险具有显著影响,而悲观情绪对崩盘风险影响不显著。     

中国证券市场股票预期收益的横截面双因素分析

一、引言根据资本资产定价模型,股票的预期收益率与β系数之间存在正的线性相关关系:Ei=RF βi(EM-RF),β系数可以完全解释股票预期收益,而收益是对系统性风险的回报,因此β系数能够完全解释系统性风险。然而近二十多年来,不断有研究表明股票收益与β系数没有显著的线性关系,特     

我国上市银行非系统性风险实证分析

利用16家上市银行的收益率数据计算统计Beta系数与R平方的分布,探寻银行类股票的非系统性风险状况,发现银行类股票风险收益率变化的方向与整个市场风险收益率的变化方向相同且波动幅度基本一致,其中宁波银行、南京银行、招商银行、民生银行、光大银行和中信银行等上市银行的系统性风险占总风险的比重很高;工商银行、中国银行、农业银行和建设银行等上市银行股票的非系统性风险占总风险比重很高;其他上市银行两种风险比例较均衡.投资者可依据自己的投资偏好,以此为参考制定投资策略.     

基于深度学习的投资者情绪挖掘及其对股价崩盘风险的影响

本文基于网络爬虫挖掘东方财富股吧中个股的发帖文本,搭建卷积神经网络和长短时记忆神经网络特征融合模型(LSTM-CNN),对样本股的股吧发帖文本进行情感识别,构建投资者情绪指标并分析了其对股价崩盘风险的影响效应及其机制。实证发现,当期投资者情绪对下一期股价崩盘风险存在显著的正向影响效应,投资者情绪高涨加剧了未来股价崩盘风险;不同市场环境下,情绪对股价崩盘风险影响具有不对称性,熊市状态下投资者情绪对崩盘风险的正向影响效应更为明显。进一步的异质性分析表明,规模较小、股权集中度较低、卖空限制大、公司所在地市场化水平低的样本公司中投资者情绪对股价崩盘风险的影响更为明显。此外,我们发现股票流动性是投资者情绪影响股价崩盘风险的一个重要的中介变量。研究结论有助于从投资者情绪视角来解释股价崩盘风险的形成机理,丰富了对股价崩盘风险影响因素的认识。     

中国证券市场股票预期收益的横截面双因素分析

一、引言 根据资本资产定价模型,股票的预期收益率与β系数之间存在正的线性相关关系:Ei=RF βi(EM-RF),β系数可以完全解释股票预期收益,而收益是对系统性风险的回报,因此β系数能够完全解释系统性风险.然而近二十多年来,不断有研究表明股票收益与β系数没有显著的线性关系,特别是Fama和French的研究显示,即使β作为惟一的解释变量,也不存在CAPM所预言的线性关系.     

投资者理性预期、流动性约束与股价崩盘传染研究

“传染性”是股价崩盘三大基本特征之一,会加剧股价崩盘负面影响,甚至引发系统性金融风险,因此,本文重点关注股价崩盘传染机制研究。首先,本文基于两阶段理性预期均衡模型,提出股价崩盘传染两大假设,即投资者理性预期与流动性约束导致传染;其次,基于2000-2016年全球28个国家或地区资本市场数据,实证检验股价崩盘传染机制和传染渠道。研究显示:(1)投资者理性预期、流动性约束会导致股价崩盘发生传染;(2)股价崩盘事件会在资本市场关联国家或地区传染;(3)提高资本市场信息透明度、加强金融管制有助于降低受关联国家或地区股价崩盘传染。     

经营业务竞争与股票收益——基于财务报告文本附注的分析

本文通过上市公司财务报告文本附注中披露的经营范围信息构建市场中心度指标,考察公司经营业务竞争强度对于股票收益率的影响。研究发现,经营业务竞争越激烈的公司,由于具有更高的系统性风险,包括创新风险和破产风险,投资者要求更高的风险补偿,因而具有更高的股票收益率。在与衡量经营业务竞争的传统变量相比、以及使用不同分词的稳健性检验后,该结论依然成立。该指标的建立能够比传统行业分类更有效地反映公司个体层面竞争水平的异质性,对于理解上市公司所处竞争结构以及风险评估具有一定的参考价值。     

异质性交易策略与股价崩盘风险研究

基于2011—2022年中国A股交易数据，研究了异质性交易策略对股价崩盘风险的影响。研究表明，个人投资者的当期情绪以及机构投资者的前期情绪，能够显著影响风险资产特质收益率的波动：个人交易者倾向于做出骑乘泡沫行为，而机构交易者则倾向于利用市场噪声情绪推高风险资产价格并提前变现离场。同时，在对股价崩盘风险和异质性交易策略之间可能存在的系统性断点进行门限检验后发现，机构投资者的相对力量效应对风险资产价格波动的影响程度存在门限点。当机构投资者的相对力量效应超过特定的阈值点时，股价长期崩盘风险会随着相对力量效应的提高而降低；而当个体交易者在市场上占据绝对主导、机构交易者相对力量降低时，股价长期崩盘风险会提高。因此，有效引导交易者对风险资产的需求回归价值面本身，避免出现噪声蛊惑和诱导交易，是有效防范化解金融交易风险的关键。     

账面损益如何影响特质波动率与股票收益相关性?——基于我国A股市场的实证研究

本文以1998—2018年A股面板数据为研究样本,使用投资组合分析方法和Fama-MacBeth横截面回归模型,基于前景理论研究账面损益对特质波动率与股票收益相关性的影响。实证研究发现:股票账面损益会显著影响特质波动率与期望收益的相关关系,特质波动率与期望收益在账面收益情况下比在账面损失下呈现出更强的负相关性。并且该结果在考虑了股票价格偏差、最大日收益率和短期收益反转等因素的影响后,依然稳健。该研究结果表明,相较于账面损失,投资者在账面收益情况下表现出更强的风险偏好。     

机构投资者降低了股价崩盘风险吗?

本文以2003-2013年中国A股上市公司为样本,考察了机构投资者持股比例与股价崩盘风险之间的关系。研究发现,机构投资者持股显著增大了公司股价未来崩盘的风险。在考虑了机构投资者异质性和内生性等因素的影响后,该结论依然成立。进一步研究发现,在信息不对称程度较高的公司中,机构投资者持股比例与股价崩盘风险之间的正相关关系更强;公司所在地区的制度环境越完善,上述正相关关系越弱。渠道分析表明,机构投资者对股价崩盘风险的正向影响一定程度上源于它加剧了信息不对称。本文拓展了股价崩盘风险影响因素研究,丰富了机构投资者持股经济后果的相关文献,对监管部门积极引导机构投资者、维护资本市场平稳健康发展,具有一定的启示意义。     

Short-sale refinancing and price adjustment speed to bad news: Evidence from a quasi-natural experiment in China

Short selling may accelerate stock price adjustment to negative news. However, the literature provides mixed evidence for this prediction. Using short-sale refinancing and a staggered difference-in-differences (DID) model, this paper explores the effect of short selling on stock price adjustment. Our results show that (1) short-sale refinancing improves the speed of stock price adjustment to negative news. This result holds after we control for endogeneity. (2) The positive relationship between short-sale refinancing and stock price adjustment speed is significant in subsamples of stocks with higher earnings management or lower accuracy of analyst forecasts, indicating that firms with more opaque information are more likely to be targeted by short sellers. In subsamples of stocks with a higher ownership concentration or lower ownership by institutional investors, short selling is more likely to increase the speed of stock price adjustment, indicating that ownership structure may influence negative news mining. (3) As short-sale refinancing exacerbates the absorption of bad news by stock prices, it increases crash risk. This study enriches the research on the economic consequences of short selling and provides empirical evidence supporting regulations on short selling in China.     

Guidelines for Manuscripts Submitted to The China Journal of Accounting Research

正The China Journal of Accounting Research"CJAR"(ISSN 1755-3091)publishes quarterly.It contains peer-reviewed articles and commentaries on accounting,auditing and corporate governance issues that relate to the greater China region.We welcome the submission of both theoretical and empirical research papers pertinent to researchers,regulators and practitioners.Authors should note:     

The China puzzle: Opportunities for accounting research

How can China achieve phenomenal economic growth despite what is considered as 'weak' institutions in market-based economies? Xu(2011) provides a framework to u...     

Bayesian Premium Rating with Latent Structure

We propose a fully Bayesian approach to non-life risk premium rating, based on hierarchical models with latent variables for both claim frequency and claim size. Inference is based on the joint posterior distribution and is performed by Markov Chain Monte Carlo. Rather than plug-in point estimates of all unknown parameters, we take into account all sources of uncertainty simultaneously when the model is used to predict claims and estimate risk premiums. Several models are fitted to both a simulated dataset and a small portfolio regarding theft from cars. We show that interaction among latent variables can improve predictions significantly. We also investigate when interaction is not necessary. We compare our results with those obtained under a standard generalized linear model and show through numerical simulation that geographically located and spatially interacting latent variables can successfully compensate for missing covariates. However, when applied to the real portfolio data, the proposed models are not better than standard models due to the lack of spatial structure in the data.     

Aims and Scope

<正>The focus of the China Journal of Accounting Research is to publish theoretical and empirical research papers that use contemporary research methodologies to...     

Income smoothing and the cost of debt

The literature on income smoothing focuses on the effect of earnings smoothing on the equity market.This paper investigates the effect of income smoothing on th...     

The case for management history

This article defines the case for treating management history as a discrete subject area, although one closely related to business, accounting, labour, and industrial history. It seeks to concentrate on the nature, process, and practice of management as an activity within the organization, and to argue that it is important that modern British managers understand the intellectual and cultural roots of their profession, since without these they will tend to be swayed by short-term management 'fads'. Within the broad topic there are several identifiable sub-areas for potential exploration, including the comparative historical development of management between different countries, management institutions, managerial careers and labour markets, management structures, management skills, and management thought and theory.     

The life and career of John Spence Ogilvy (1805-71), the first chartered accountant to emigrate to Australia

So far as the available evidence allows, this paper examines the life and career of John Spence Ogilvy, foundation member of the Society of Accountants in Edinburgh in 1854, who emigrated to Melbourne in 1856, but did not play a part in the development of an organized accounting profession in Australia. The paper also attempts to explain the gap of thirty-two years between the formation of the first accounting bodies in Edinburgh and Melbourne.     

Female CFOs and loan contracting: Financial conservatism or gender discrimination? – An empirical test based on collateral clauses

Based on signaling and gender discrimination theory, we examine whether chief financial officer(CFO) gender matters to bank–firm relationships and the designing...     

Guidelines for Manuscripts Submitted to The China Journal of Accounting Research

<正>The China Journal of Accounting Research‘‘CJAR’’(ISSN 1755-3091)publishes quarterly.It contains peer-reviewed articles and commentaries on accounting,auditin...