中国机构投资者投资行为的异化

在我国机构投资者迅猛发展的同时,其投资行为也在发生异化,与政府和市场的最初预期产生明显的偏羞。机构投资者投资行为的异化典型地表现为：短视行为、羊群行为、处置效应和违法违规行为。机构投资者投资行为的异化严重扰乱了证券市场的正常秩序,加剧了市场风险的累积。中国证券市场的非理性波动其实并非由非理性的个人投资者所引起,而正是由行为相对更为“理性”的机构投资者（他们构成了庄家的大部分）所引起。     

中国证券市场个人投资者过度自信行为分析

本文在国内外相关研究的基础上,运用行为金融学相关理论,结合数据案例对我国证券市场上个人投资者的过度自信行为进行了分析,结果表明我国证券市场上个人投资者存在过度自信倾向,并因"归因偏差"、"事后诸葛亮"、"性别差异"、"高换手率"等特征的不同而对投资者过度自信产生不同程度的影响。     

机构投资者噪声交易行为的理论分析

根据对机构投资者噪声交易行为的理论分析,本文提出由于证券市场在本质上是一个信息市场,天然具有噪声交易动机和行为能力的机构投资者利用个人投资者的认识心理、情绪和投资行为偏差与证券市场制度结构,策略性地实施噪声交易行为,以此加剧信息的不对称性,进而在最大程度上发挥其比较优势、获取超额收益,噪声交易因此成为机构投资者投资行为的本质特征。机构投资者噪声交易行为属于有限理性的主动性噪声交易,噪声交易者风险的分布具有阶段性特征,在机构投资者可控制的范围之内。     

基于“过度自信”模型的中国证券市场投资者行为分析

随着中国资本市场发展的不断深入,影响其发展的因素已经趋于多元化.文章从资本市场投资者的心理着手,通过分析目前中国证券市场的投资环境、投资者的结构状况,结合行为金融学经典理论建立“过度自信”模型,从理论与实际相结合的角度来透析中国证券市场投资者的心理与行为之间的联系,从而为引导中国证券市场投资者理性投资提供理论支持.     

机构投资者与我国证券市场的发展

机构投资者与我国证券市场的发展贾晓梅机构投资者是指具有法人资格的以其所能利用的资金在证券市场上进行各类股票和债券投资的机构。与一般的投资者不同的是，机构投资者是由投资专家管理，在特定的法律规范限制下，将资金百分之百地用于投资，并且多为长期性投资。一般...     

近十年证券市场投资者结构变化及其对市场稳定性影响的实证分析

近10年间,证券市场投资者结构不断变化,其中主要是个人投资者以及机构投资者两部分的投资数额增加明显,投资占比也在不断变化,总的趋势表现为个人投资者投资额占比减少,机构投资者投资额占比增加。在投资者结构变化的同时,我国证券市场的稳定性也在变化。证券市场的波动性有变小的趋势。由此看来,伴随着个人投资者投资额占比的减少,机构投资者投资额占比的增加,这可能会使我国证券市场更加稳定。本文采用上证指数收盘价的年标准差来描述证券市场波动性,使用eviews软件进行实证分析证券市场投资者结构变化及其对市场稳定性的影响。     

壮大机构投资者实力促进证券市场稳健发展

发达国家证券市场的发展经历表明,随着市场的日益成熟和规模的扩大,机构投资者将逐步成为证券市场最主要的投资力量。我国证券市场经过多年飞跃式发展,在市场容量、交易手段、清算体系以及监管规则等各方面,都有了长足的进步,但投资者结构却始终处于幼稚阶段———散户为主,机构为辅。这种投资者结构成为制约我国证券市场进一步发展的瓶颈。因此,通过多种途径,迅速壮大机构投资者实力,已经成为我国股市发展的当务之急。一、我国机构投资者比例正在稳步提高在发展投资基金、允许保险资金和三类企业入市等一系列政策推动下,我国证券市场上机构…     

证券市场投资者结构变迁的动力学模型及特征——兼论基于投资者教育机制的非理性行为治理路径

我国证券市场投资者的羊群效应、小公司效应、反应过度与反应不足等非理性行为极其明显,导致证券市场发生剧烈波动已经成为常态,从而严重影响到我国证券市场投融资功能的正常发挥,也不利于经济的发展。加强我国证券市场投资者教育工作,建立投资者教育机制,是保护我国证券市场投资者利益,维护证券市场长期稳定健康发展的需要,是治理非理性行为金融的有效路径。坚持长期有效、不懈努力地开展投资者教育工作,形成投资者教育工作的长效机制,是保障资本市场平稳运行、良性发展的重要举措,是资本市场一项重要的基础性制度建设。     

投资者过度自信对金融市场的影响

随着证券市场的发展,投资者的很多行为都无法用传统的经济理论来解释,传统经济学面临着新的挑战,同时行为经济学越来越受到经济学家的关注.行为经济学的灵感主要来源于心理学,而其最主要的一个结论就是人们是过度自信的.本文在总结了国内外的相关理论和实证研究的基础上提出了投资者过度自信的表现及其对金融市场的影响.最后本文指出中国证券市场要进一步健康发展必须尽量使投资者克服心理弱点,减少市场中的投机情绪.     

投资者高频情绪对我国A股市场日内过度交易行为的影响——基于东方财富股吧的研究

股票市场中的“过度交易”现象会增加市场波动，进而加剧市场风险。本文抓取了2019年1月1日至2021年11月30日沪深300指数与中证500指数成分股的东方财富股吧发帖文本数据，基于文本数据挖掘方式构建了1小时的社交媒体投资者高频情绪指标，深入探究了投资者情绪对我国A股市场日内过度交易行为的影响及其作用机制。研究发现：投资者情绪能显著地正向影响投资者日内过度交易行为，同时投资者情绪对机构投资者日内过度交易的影响强于个人投资者。进一步地，牛市中受投资者情绪影响产生的日内过度交易行为明显大于熊市；并且相较于中小盘股，投资者情绪对大盘股中个人投资者日内过度交易行为的影响程度更大。本文研究结论对投资者优化投资策略、引导监管机构机制设计、防范我国股票市场过度交易风险等具有较强的参考意义。     

The Sensitivity of Individual and Institutional Investors' Expectations to Changing Market Conditions: Evidence from Closed-End Funds

This study investigates whether individual and institutional investors respond differently to changes in market conditions. Closed-end funds are the medium used to test the hypothesis because closed-end fund shares (held primarily by individual investors) and the underlying assets (held primarily by institutional investors) are claims to the same stream of distributions. The empirical results suggest that individual investors are more responsive than institutional investors to changes in market conditions. Moreover, although the response of institutional investors differs across stock and bond markets, we cannot reject the hypothesis that the additional sensitivity of individual investors' expectations is uniform across stock and bond markets.     

透明度变化对股票市场投资者委托单提交行为和交易成本影响研究

基于2003年12月8日沪深交易所交易前市场透明度改革背景,本文利用一家营业部的投资者报价和交易数据,研究同一个机构投资者和散户投资者在透明度改革前后委托单提交激进程度的变化,以及这种变化对其完成交易的成本的影响。我们发现,透明度改革前后,机构投资者的委托单提交激进程度都显著大于散户投资者的委托单提交激进程度。透明度增加以后,机构投资者的委托单激进程度显著减少,而散户投资者的委托单提交激进程度增加。同时发现,透明度增加以后,机构投资者通过分拆委托单,增加交易次数,导致完成交易的时间增加,但价格影响力基本没有变化,散户投资者的成交时间和价格影响力有显著改善。     

Whose money is smart? Individual and institutional investors’ trades based on analyst recommendations

This study explores how institutional and individual investors respond to analyst recommendations. Using a unique account-level trading dataset taken from the Shanghai Stock Exchange, we obtain direct evidence to show that (1) active institutional investors are significantly net buyers (net sellers) on “strong buy” and “buy” (“hold” and “sell”) recommendations; (2) active institutional investors condition their trades based on the buy-side pressure of analysts; (3) institutional investors earn abnormal returns by incorporating analysts’ buy-side pressure into their trading reactions to analyst recommendations; and (4) individual investors, in contrast, exhibit abnormal trade reactions opposite to those of active institutional investors. Our results are robust to alternative measures and different specifications. This study provides evidence that active institutional investors are more sophisticated processors of information and provides support for regulators’ concerns about the sub-optimal investment decisions made by individual investors who are unaware of the potential conflicts of interest analysts may face.     

Who moves the stock market in an emerging country – Institutional or retail investors?

By analyzing the dynamic behavior of institutional and retail investors in the Indonesia Stock Exchange using their completed transactions (comprising over 250 million observations), this study highlights that their trading strategies and behavior, in which institutions play a more important role than individuals in the market, are indeed different. Specifically, past trading activities by individual (institutional) investors have significantly affected the current trading behaviors and strategies of individual investors (both investor types). Furthermore, retail (institutional) investors are most likely to perform contrarian (momentum) strategies and trade frequently (infrequently) with small (large) amounts of money and short (long) holding periods.     

Foreign and Local Institutional Ownership and the Speed of Price Adjustment

Abstract:  This paper examines the relation between the speed of price adjustment and stock ownership by foreign and local institutional investors using data from the Korean stock market. We show that returns of stocks with high foreign institutional ownership lead returns of stocks with low foreign institutional ownership, especially after foreign ownership restriction is lifted. Likewise, returns of stocks with high local institutional ownership lead returns of stocks with low local institutional ownership. These results support the idea that foreign institutional (local institutional) investors have faster access to or processing power of new information than local institutional (local individual) investors.     

The Distribution of Information among Institutional and Retail Investors in IPOs

This study examines investor performance in IPOs using a unique database comprising 85,384 investors and 29 offerings from Finland. The evidence indicates that on average institutional investors do not obtain larger initial returns than retail investors, as the incentive to acquire information is limited by allocation rules which favour small orders. This result is in contrast to findings by Aggarwal et al . (2002), who show that institutional investors perform better in a bookbuilding environment. Within each investor category, however, large orders are associated with the best performance, suggesting that information differences figure more importantly within rather than between categories.     

基于佣金收入动机的机构投资者盈利预测偏离与股票交易量研究

本文基于信息反应模型研究了机构投资者盈利预测偏离与普通投资者交易需求之间的激励关系,并选取2006至2010年的相关盈利预测和股票交易数据进行实证分析。结果表明,机构投资者的盈利预测存在显著偏离前期市场平均预测值的倾向,而且这种偏离倾向会进一步诱发股票交易增量,从而增加机构投资者的佣金收入。这意味着普通投资者在参考机构投资者的盈利预测报告时,需要考虑其基于刺激交易量的自利因素。     

Market ambiguity and individual investor information demand

We examine whether ambiguity in the market leads to an increase in information demand by individual investors. Drawing on the asset-pricing model proposed by Mele and Sangiorgi (2015), which incorporates market ambiguity, we measure individual information demand using daily Google searches and measure market ambiguity using a metric based on the market trades of institutional investors. We find that individual investors increase their information demand during periods of greater market ambiguity. We also provide evidence that information demand from individual investors spikes around earnings announcement days primarily when market uncertainty is driven by net-selling activity. Overall, these results suggest that the disagreement among institutional investors either represents uncertainty or contributes to the uncertainty related to a stock, leading to increased demand for information from individual investors.     

Underwriters’ price support regulation and institutional investors’ trading: The case of the putback option

We examine a period in Korea during which a price supporting regulation called the putback option was imposed on the IPO underwriter. Under the regulation, individual investors of IPO had put options which can be exercised at 90% of IPO price. We find that during the regulation period, institutional investors’ flipping activity is evident not on the days following the IPO but on the days following the expiration of putback option. Our study shows that the regulation results in merely delaying the institutional investors’ documented trading behavior and provides evidence that the relationship between the underwriter and the institutional investors affects the trading of institutional investors.     

Investor Sophistication and the Mispricing of Accruals

This paper examines the role of institutional investors in the pricing of accruals. Using Bushee;s (1998) classification of institutional investors, we show that firms with a high level of institutional ownership and a minimum threshold level of active institutional traders have stock prices that more accurately reflect the persistence of accruals. This result holds after controlling for differences in the persistence of accruals between firms with high and low institutional ownership, and after controlling for other characteristics that are correlated with institutional ownership and future returns. Additionally, firms with low institutional ownership are smaller, less profitable, and have lower share turnover, suggesting that limits to arbitrage impede institutional investors from exploiting the seemingly large abnormal returns for these firms.