我国股市过度投机下个体证券投资者行为分析

过度投机是我国股市的现状,而研究这种状况下投资者采取何种投资策略,对于其能否克服投机行为带来的风险,并进而利用其他投资者的行为来获取收益至关重要。文章从行为金融的角度去研究个体投资者的交易行为,深入考察了中国个体证券投资者行为的主要特点,并分析其行为的决定因素。在此基础上提出个体证券投资者在交易中应该采取的有效投资策略。     

Negativity Bias in Attention Allocation: Retail Investors’ Reaction to Stock Returns

We argue that negative stock market performance attracts more attention from retail investors than comparable positive performance. Specifically, we test and confirm the hypothesis that retail investors pay more attention to negative extreme returns than positive ones. We present a measure of attention at the aggregate and company‐specific levels using Google's internet search volume indexes. These measures correlate with, but are different from, existing proxies of attention. Our empirical results strongly support the position that investors display a negativity bias in attention allocation with respect to extreme stock returns. Across all specifications, lagged negative extreme returns are stronger predictors of high attention at the individual‐stock and stock market levels than positive ones.     

中国股市SEO后股票收益及公司业绩的双重长期弱势表现

以中国股市于2000年和2001年间进行新股增发的33支A股股票为样本研究发现,增发后SEO股票无论是在投资收益方面还是在公司业绩方面,长期内都表现出显著的弱势现象。在进一步研究弱势表现的原因时发现,SEO前发行公司过度的盈余管理导致了发行后经营业绩的长期弱势表现;SEO前,投资者对即将增发的股票存在着系统性高估,SEO后的长期股票收益弱势是投资者根据发行后公司的实际业绩对原本过度乐观的预期逐步进行理性调整的结果。     

极端市态中基金申购赎回行为研究——基于中国开放式股票型基金的分析

自2007年初至2008年末,我国证券市场经历了一轮明显的牛熊市转换。对这一时段的基金申购赎回行为进行研究发现：在极端市态中,开放式股票型基金申购、赎回数量的巨额差异背后,存在着中购、赎回行为影响因素的巨大差异。通过对这些差异的研究,可以为深入了解投资者的心理,预测和指导未来投资者行为提供很好的帮助。研究结果还表明：我国基金的个人投资者正在走向成熟;基金的机构投资者较为理性,其交易行为趋向长期化。     

我国股市模仿投资行为的理论分析

行为金融理论是证券市场的最新理论,它运用社会学、心理学和经济学原理来研究股市的实际投资行为。本文运用行为金融理论对我国股市模仿投资行为进行了分析,认为我国股票市场是一个新兴股市,不论是机构投资者还是个人投资者都存在不同程度的模仿投资行为,在模仿投资行为形成过程中,信息传递机制起着重要作用,使我国股票价格经常出现异常波动甚至产生股市泡沫。文章提出,为遏制模仿投资行为,必须改善股票市场结构,完善市场机制,大力培养和发展机构投资者;加快股市相关制度创新,完善有关证券市场的法律法规;开展投资者教育,把理性投资者培养成市场主导力量;加大投资工具创新力度,增加投资品种。     

机构投资者实地调研与投资-股价敏感性——基于管理层学习效应视角

文章利用2013-2018年深圳证券交易所上市公司的数据,实证检验了机构投资者实地调研对投资-股价敏感性的影响。研究发现机构投资者实地调研提高了公司投资-股价敏感性,在股价信息含量越高时,机构投资者实地调研对公司投资-股价敏感性的影响越显著,表明投资者实地调研通过信息反馈效应中的“挤入渠道”增强了管理层向市场的学习行为,机构投资者实地调研对投资-股价敏感性的影响在管理层持股的上市公司中更为显著。研究结果表明机构投资者实地调研可帮助上市公司管理层获取更多决策有用信息,提升资源配置效率,对于完善机构投资者调研制度、提升我国资本市场信息效率具有一定的实践价值。     

量变中寻求质变——对基金市场扩容的一点认识

近期基金市场迎未了第三次扩容,基金规模也迅速扩大。这次扩容管理层目的在于大力扶持机构投资者,增强证券市场稳定性,然而从目前二级市场表现看,这一政策值得商榷,在量变中寻求质变,加强外部环境的改善以及基金管理公司内部的整合是主要关键。     

The performance of socially responsible equity mutual funds: Evidence from Sweden

This paper presents a comprehensive analysis of socially responsible (SR) funds in Sweden by assessing fund managers' abilities and performances across different market states. These issues are analyzed at the aggregate and individual fund levels. The paper also presents several new statistical tests that allow more precise inferences about differences in performance and the variability in fund returns arising from different benchmarks. In general, SR and conventional funds perform similarly to the market. At the aggregate level, SR funds investing in Sweden and Europe perform similarly to conventional funds, while those investing globally tend to underperform. This underperformance seems to be linked with poor selectivity abilities of global SR fund managers. For individual funds, the performance of both types of funds is more similar. Most funds perform similarly in crisis periods compared to non‐crisis periods. Overall, our results are consistent with a mature market for SR investing and support the view that the similar performance of SR and conventional funds is associated with the mainstreaming of SR investment in Sweden. These findings encourage SR investing both by socially conscious investors, who wish to align their social values with their investment decisions, as well as by conventional investors, who will not be penalized by investing in these funds. We also call attention to the difficulties investors face when trying to identify funds with high social standards, considering that there is scarce information on the extent to which each fund (SR or conventional) holds stocks that comply with ethical and social criteria.     

萨班斯法案与我国上市公司治理结构研究

为了保护投资者的利益,美国于2002年颁布了萨班斯法案。该法案要求加强对在美国上市公司的监管,完善上市公司的内部控制机制,但其高昂的实施成本也引起了人们对该法案作用的争议。尽管如此,萨班斯法案对我国上市公司治理方面仍具有借鉴意义。本文通过对萨班斯法案的分析,探讨我国证券市场应如何借鉴该法案来完善我国上市公司内部治理机制和外部治理环境,从而实现我国证券市场快速、健康而有序的发展,以保护国内广大投资者的利益。     

浅析价值投资

本文介绍了价值投资理论的主要内容,指出了普通投资者对该理论的误解之处,并且结合中国股市的实际情况讨论了价值投资在中国应用的局限性,指出了中国股市的设计缺陷,导致股市一直无法健康发展,希望能对普通投资者有所帮助。     

中国证券投资基金羊群行为研究

羊群行为是金融市场上一种特殊的非理性行为,证券市场上的羊群行为会影响证券的价格,带来了证券价格过度的波动和市场的脆弱性。通过对证券投资基金投资行为进行测度,发现证券投资基金中有较重的羊群行为。单纯发展机构投资者并不能起到平抑股价,恢复市场理性的作用。     

How does FX liquidity affect the relationship between foreign ownership and stock liquidity?

This study investigates the roles foreign investors play in a representative emerging market, focusing on the relationship between foreign ownership and stock market liquidity as well as this relationship's response to foreign exchange (FX) liquidity. Our analyses yield three main results. First, the bid–ask spread and price impact of stock trades decrease along with foreign ownership, supporting the view that foreign investors tend to improve stock liquidity. Second, foreign ownership decreases along with a decline in FX liquidity, suggesting that foreign investors care about FX liquidity when determining their stock holdings. Third, stock liquidity increases continuously along with foreign ownership as FX liquidity decreases. Overall, this study's evidence indicates that foreign investors, as liquidity providers, can play a positive role in an emerging economy even when FX liquidity declines.     

Seasoned equity offerings by small and medium-sized enterprises

Most analyses of small firms’ decision to seek outside equity financing and the conditions thereof concern private firms. Knowledge of the risk and return of entrepreneurial ventures for outside investors is consequently limited. This paper attempts to fill this gap by examining the Canadian context, where small and medium-sized enterprises (SMEs) are allowed to list on a stock market. We analyze seasoned equity offerings launched by SMEs over the last decade. These public issuers can be considered low quality firms with poor operating performance. Managers issue equity before a large decrease in operating and stock market performance. Individual investors do not price the stocks correctly around the issue and incur significant negative returns in the years following the issue. This is particularly true for constrained issuers. We confirm that entrepreneurial outside equity attracts lemons and that individual investors cannot invest wisely in emerging ventures. Probably as a consequence of individual investors’ lack of skill and rationality, the cost of outside equity financing of Canadian public SMEs is abnormally low.     

Regulatory procedures,investment opportunities and stock valuation

Electric utilities differ in their accounting procedures. By regulatory commission directive some use normalization and some use flow through to arrive at their earnings figures. Because regulation is on an allowed return on investment standard these reported earnings are relevant for stock valuation. Any variation in price/earnings ratios between flow through and normalizing companies therefore must be explained by differences in risk to equity investors, differences in investment opportunities, or market inefficiency involving erroneous restatement of earnings. Empirical work demonstrates that there is a difference in price/earnings ratios. Firms that normalize enjoy a premium. The evidence also indicates that the premium is not explained by risk difference. Because the perverse form of market inefficiency required as an explanation seems unlikely, the most reasonable conclusion is that the premium relates to investment opportunities associated with regulatory climate. If so it promises no excess return to stock buyers because it is already impounded in stock price.     

Does internationalization make a difference? Stock market reaction to announcements of international top executive appointments

In recent years, there has been an increasing scholarly and practical interest in the internationalization of top management teams. It is argued that international firms need international top managers to meet the challenges arising from operating across borders. However, the few existing studies that focus on the link between top managers’ internationalization and firm performance yield inconclusive results. Thus, it is an open question if and to what extent international firms can benefit from international top managers. Drawing on upper-echelons theory, resource-dependence theory, and signaling theory, this paper examines how the stock market reacts to the appointment of an international top manager. Our empirical study of German firms employs an event study to analyze the direct impact of internationalization on a firm's stock price. Piecewise regression analysis reveals that a top manager's internationalization needs to exceed a certain threshold before investors incorporate this individual characteristic into their investment decisions. Furthermore, our analysis shows an inverted U-shaped relationship between internationalization and abnormal returns, suggesting that internationalization may have both positive and negative effects on a firm's stock price. We present several explanations for our empirical findings and discuss future research directions.     

关于中国股票市场上基金重仓股的博弈分析

证券投资基金在我国股票市场中的地位越来越重要,基金重仓的股票越来越受到投资者的关注。通过建立一个二级市场中基金与个人投资者在基金重仓股上的不完全信息动态博弈模型,用于解释基金与个人投资者在股票市场上的投资和投机行为,并根据模型的分析提出促进中国股票市场长期健康、有序发展的建议。     

我国股票市场信息不对称现象成因与风险控制对策分析

由于信息在上市公司和投资者之间存在传递障碍,世界各国的股票市场普遍存在信息不对称现象。我国股票市场正处于经济转轨的特殊时期,信息披露制度的缺陷,信息不对称现象尤其严重,集中体现在发行者与投资者、机构投资者与个人投资者之间,致使投资者的利益蒙受损失。分析信息不对称现象在我国股票市场存在的原因,以及风险控制的对策,以确保股票市场健康有序的发展。     

中小股民投资收益结构的实证分析――以中小股民投资者为例

随着时代的发展,我国股市逐渐发展起来,越来越多的股民入股,但随着股市结构及政策的变化,我国的中小股民投资收益结构也发生了一定变化。本文通过对中小股民投资收益结构进行分析,研究我国股民的收益分类以及股民具体的构成,从而对我国的股民结构和公司结构进行深入研究,并且对于培养高水平且持续稳定的分红上市公司也有一定研究。     

Does Sustainability Investment Provide Adaptive Resilience to Ethical Investors? Evidence from Spain

Although sustainable and responsible investment (SRI) has quite recently become a hot research topic, scarcely any systematic research has been paid to the performance of this non-conventional approach to investment during the financial crisis that emerged in mid-2008 when the resilience of the financial markets was sorely tested. Such real-world resilience in practice is the subject of the current research which tests whether environmental, social and governance screens provides ethical investors with adaptive resilience in bull and bear market conditions by focussing on the SRI equity index of one of the most active markets in Europe in terms of ethical investment, the FTSE4Good-Ibex in Spain. Multivariate Generalized Autoregressive Conditional Heteroskedasticity (M-GARCH) analysis indicates that ethical investors in the equity market examined with evidence that greater resilience in severe business cycle shocks could be attributable to SRI by companies. Although limited to a single country study, the results have implications for investors seeking resilience in crisis: when individual values and beliefs towards sustainability tie with personal investment strategy, the end result is adaptive financial resilience, social well-being and environmental defence.     

中国资本市场泡沫与市场信用建设——由资本市场上的“羊群效应”引发的思考

中国资本市场机构投资者严重缺乏 ,个人投资者占主导地位。信息不对称使非理性投资主体大量产生 ,引发“羊群效应” ,这主要是由于机构投资者的产权不明晰造成的。减少中国资本市场泡沫 ,必须大力加强资本市场信用的建设 ,而这又离不开机构投资者产权的明晰界定。