股票型基金净值与头号重仓股关系研究

基金的种类繁多,以基金头号重仓股票为研究对象,运用Copula方法,对2012年四季度82只股票型基金进行相关性分析。研究表明,投资股票型基金带来的收益与头号重仓股的收益有极大程度的关系,投资风险降低了很多,给中小投资者提供了,可以通过购买以该股票为头号重仓股的基金的方法在有限的资金下大幅降低自己的风险。     

基金经理投资行为的启示

<正>基金经理的投资行为告诉我们,对个股要有自己的判断准绳,并通过组合构建来平衡风险。简单地追逐基金经理投资的股票其结果往往是南辕北辙。跟着基金经理炒股是很多股票投资者热衷的投资方式。一般来说,基金每季度工作报告会披露前十大重仓股,或是每半年披露全部持仓股,然而投资者     

财务分析师盈宗预测精确度决定因素的实证分析

文章以2004-2005年的上市公司数据为样本，分析了我国财务分析师在预测上市公司未来盈余时影响其预测精确度的主要因素。研究发现，预测机构数量的增加、盈余可预测性以及信息披露质量的提高，将伴随着高的盈余预测精确度，而盈余波动程度越大、公司规模越大，预测的精确度则越低。同时，可预测性、盈余管理、盈余波动以及公司扩张速度对分析师的悲观预测有显著的影响，而可预测性、盈余管理以及公司规模则显著影响分析师对盈余的乐观估计。     

财务分析师盈余预测精确度决定因素的实证分析

文章以2004~2005年的上市公司数据为样本,分析了我国财务分析师在预测上市公司未来盈余时影响其预测精确度的主要因素。研究发现,预测机构数量的增加、盈余可预测性以及信息披露质量的提高,将伴随着高的盈余预测精确度,而盈余波动程度越大、公司规模越大,预测的精确度则越低。同时,可预测性、盈余管理、盈余波动以及公司扩张速度对分析师的悲观预测有显著的影响,而可预测性、盈余管理以及公司规模则显著影响分析师对盈余的乐观估计。     

信息披露质量对股票流动性风险的影响分析

预测和防范股票的流动性风险对投资决策具有重要的指导意义。基于Pastor和Stambaugh(2003)的测度,利用滚动回归法度量股票的流动性风险,以投资者决策可用信息为切入点,从市场交易信息、公司财务报表和证券分析师预测三个视角,考察了信息披露质量对股票流动性风险的影响。结果表明,信息披露质量高的公司其股票未来的流动性风险较低。分析师预测信息可以较好地甄别公司信息披露质量。此外,信息披露质量对股票流动性风险的负向预测能力与市场流动性新息的强弱呈正向关系,且在市场流动性恶化期内尤为显著。     

现金资产管理如何影响基金投资业绩

现金是基金资产组合中极其重要的一类资产,其平均占比甚至超过第一大重仓股,但基金经理的现金管理行为及其经济后果却缺少关注。本文在高度不确定性的市场背景下,从现金资产配置是否匹配基金需求特征的角度定义基金经理的现金管理能力,并结合2007—2022年主动型股票基金数据研究现金管理能力对基金投资业绩的影响。结果显示,现金管理能力能够正向预测基金未来的投资业绩,基于现金管理能力指标的单变量十分组排序多空组合其年化超额收益为6.36%,结合其他能力特征的双重排序年化超额收益超过12%。现金管理能力指标的业绩预测能力不能被风险溢价、交易成本和流动性择时等已有因素解释。进一步的实证分析发现:高现金管理能力基金表现出更好的选股配置策略,能积极识别并买入被错误定价的证券;基金团队管理和兼职管理会负面影响基金的现金管理能力,表明现金管理属于基金经理的个人技能。     

中国机构投资者真的稳定市场了吗?

机构投资者能否起到稳定市场的作用一直是管理层和学术界讨论的焦点。考虑到机构投资者的择股偏好与股票波动之间存在的内生性问题,本文运用倾向得分匹配模型(PSM),筛选出与机构重仓股"相仿"的未被机构重仓持有的股票,从微观层面检验了我国以证券投资基金为代表的机构投资者对市场波动性的影响。研究发现:(1)机构投资者偏好财务优良、治理有效的公司,而此类公司的股票往往呈现出更低的波动性。(2)在市场上升阶段,机构投资者提高了股票的波动性;而在市场下降阶段,机构投资者虽然起到了降低股票波动的作用,却未能阻止股价继续下行。(3)机构投资者的买入行为与股票的期内收益存在很强的正向关系,而在滞后期中机构重仓股并未显现出更高的收益率,这意味着对于个体投资者而言,通过追踪基金公布的季度持仓数据来选择股票已经错过了最佳买入时期。     

共持重仓股“变脸”对基金家族的连锁效应研究

文章对股票"变脸"给出可检验的定叉,采用Logistic面板数据模型实证研究了股票"变脸"对整个基金家族影响的传导过程.研究发现同一基金家族内部共同持股程度显著高于家族外部;家族共同持股导致股票"变脸"对单只基金业绩的影响扩散到整个家族,甚至引发整个家族业绩突变;重仓股"变脸"引发基金家族危机的原因是家族高度共同持股,而基金治理中激励机制的安排可能是基金家族高度共同持股的诱因.     

融资融券交易的信息治理效应

本文基于2009—2014年我国上市公司业绩预告和分析师盈利预测数据,从管理层信息披露和分析师预测的角度研究融资融券交易的信息治理效应。通过比较分析融资融券标的股票与非标的股票,以及股票加入融资融券标的前后上市公司信息环境的差异,我们发现融资融券交易同时具有内部信息治理和外部信息治理的作用。其中内部信息治理效应表现为,融资融券交易的推出有效促使了管理层对非强制信息和坏消息的披露,提高了管理层业绩预告的及时性和准确性;融资融券的外部信息治理效应体现在显著降低了财务分析师对目标公司盈利预测的偏差与分歧。在控制相关因素以及通过双重差分模型控制内生性后,以上结果依然稳健。本文的研究结果表明,融资融券交易通过影响管理层和分析师的信息行为进而影响公司的信息环境,这为融资融券交易改善股票市场定价效率和市场质量提供了新的解释。     

美国财务预测信息披露与监管的经验及借鉴

美国已基本形成了较为完备的财务预测信息披露与监管体系,其主要内容和值得借鉴的经验包括:对财务预测信息内容的完整界定;前瞻性信息和预测性信息区分标准的确立;安全港规则的确立;建立了由财务分析师为主体的独立专家预测体系.目前我国上市公司财务预测信息的披露和监管尚存在不少问题,需要在以下几方面改进和完善:建立完善的财务预测信息披露、监管规范体系,提高财务预测信息供给的有效性;明确企业管理当局对财务预测信息的编制责任;建立适合中国证券市场现实的安全港规则;加强对财务预测信息披露的审核.     

Fund Portfolio Holdings and Affiliated Analyst's Objectivity: Do Equity and Employment Relationship Matter?

The author investigates how the equity relationship between fund company and brokerage firm as well as employment relationship between analyst and brokerage firm affect affiliated fund stock portfolio holding and the affiliated analyst's objectivity. By using the specific data of such equity and employment relationship, the author finds that equity and employment relationship do matter in fund portfolio holdings and analyst objectivity. Specifically, analysts tend to release more optimal ratings on stocks that have been hold by the funds, and the funds tend to significantly reduce the stocks in their portfolio once the analysts have announced high ratings on the stocks. Moreover, the analysts in employment relationships with majority shareholders of funds and with a low reputation reveal worse objectivity. In addition, from the point of abnormal return, analysts in employment relationships with majority shareholders of funds and with a low reputation damage the interests of common investors.     

A reliable performance measure to differentiate China’s actively managed open-end equity mutual funds

We compare different fund performance measures to examine which performance measures can generate risk-adjusted returns between high ranked and low ranked China’s actively managed open-end equity mutual funds. Our results show that only the six-factor (five factors (market, size, b/m, profitability & Investment facotrs) plus a momentum factor) alpha as the performance measure meets the criteria. Separated by the six-factor alpha, better performing funds have a larger asset under management, a better past 6-month cumulative return, a better stock picking ability, and a higher percentage of hybrid funds. Through our sample period from July 2004 to December 2015, the highest ranked quintile funds generate a monthly risk-adjusted return of 0.24% more than the lowest ranked quintile funds and the six-factor alpha reliably selects a better fund portfolio in both bear and bull markets on the basis of both fund return and holding data. Furthermore, our results from fund trading data show that funds with the highest six-factor alpha rank demonstrate a better trading skill in bear markets, suggesting that those better performing funds exhibit their market timing and stock picking abilities when investors need them most.     

我国证券投资基金持股特征的实证研究

本文使用2002年基金年报中的投资组合数据对2002年末期基金的持股特征进行了实证研究.研究表明,基金的持股比重与股票的每股收益、标准差、股票价格、流通市值、换手率和上市年龄等特征变量具有显著的相关性,通过分析进一步发现基金在2002年末市场低迷的时期十分注重上市公司的业绩、股票的波动性和流动性风险,并且实施价值型投资策略.本文的其它研究结果还表明基金具有较好的识别、挖掘股票价值以及调整投资组合的能力.     

Riding the Wave of Sentiment: An Analysis of Return Consistency as a Predictor of Future Returns

This article analyzes the degree to which return consistency in the past predicts future returns. I show that consistency is a strong predictive measure for future stock returns. In a portfolio context, positively consistent stocks exhibit positive future risk-adjusted returns, and negatively consistent stocks exhibit negative future risk-adjusted returns. The results are economically and statistically significant over multiple subperiods. Also, odd return behavior persists for nearly two years after portfolio formation. Stocks that have been consistently positive (negative) for longer time horizons have higher (lower) risk-adjusted returns during the followingmonththan those thathavebeenconsistent for shorter time periods. Finally, high consistency enhances momentum when the two factors are allowed to interact. Thus, there appears to be strong path dependence in the momentum effect, and consistency in stock returns appears to be an important component of return predictability.     

Home Bias in International Stock Return Expectations

Despite the advantages of international portfolio diversification, actual equity portfolio holdings reveal a strong bias towards domestic stocks. One hypothesis is that this bias can be explained by stock return expectations expressed in probability judgments. To test that hypothesis and to analyze the underlying effects that might cause distortions in investors' expectations, we conducted a cross country study in Germany and the U.S. comparing participants' judgments about an identical set of German and U.S. stocks.

Results show that both test groups feel more competent about domestic stocks. The asymmetric perception of competence is connected with an asymmetric assessment of probabilities. For both test groups subjective probability distributions of stock returns are significantly less dispersed and more optimistic for stocks associated with high competence levels than for stocks associated with low competence levels.     

上海股票市场动量效应研究——基于1995—2009年周收益率数据

利用1995年1月至2009年12月期间上海证券交易所所有A股股票的日收益率数据,以本周四到下周三为一个周期计算周收益率,采用重叠抽样方法,对上海股票市场的动量效应进行实证研究。结果表明:上海股票市场存在动量效应现象,但动量效应持续的期限要短于西方发达国家的股票市场;当形成期为1周、持有期为1~3周时,投资策略组合表现出显著的动量效应;当形成期大于1周、持有期超过3周时,投资策略组合开始出现收益反转现象;当持有期和形成期增大到12~26周时,投资策略组合又表现出不显著的动量效应。     

基金的市场时机把握能力研究

本文对我国证券投资基金的市场时机把握能力进行了实证研究。在研究设计上 ,本文以中信指数作为市场基准指数 ,使用 3种基于CAPM基础的模型和 3种基于Fama French三因素模型基础的改进模型 ,以相互印证结果的可靠性。同时 ,本文也采用了非参数检验方法 ,对基金年报的有关内容和投资组合公告中的持仓信息进行分析 ,以使结论更具有可信性。研究结果表明 ,整体而言 ,我国基金缺乏市场时机把握能力 ,但具有一定的证券选择能力 ,不过其对基金收益的贡献并不显著。     

Estimating the elasticity of intertemporal substitution accounting for stockholder-specific portfolios

This article estimates the elasticity of intertemporal substitution using stockholder actual return experience. The approach is motivated by numerous data sources indicating that the median US stockholder has a portfolio composed of only three or four individual stocks, rather than a well-diversified portfolio as suggested by portfolio theory. Therefore, representing an individual stockholder portfolio by a proxy financial index (the common approach taken in the literature) may be too rough an approximation of investor behaviour and lead to biased results about risk aversion and intertemporal substitution. Eschewing the financial index methodology, our results support the standard representative agent assumption that there is a high degree of homogeneity in the elasticity of intertemporal substitution across stockholders with different wealth levels. Our findings have implications for models that assess the comovement between consumption and return on stocks.     

A simple behavioural model of investor holding periods under the presence of trading costs

We develop a simple behavioural model where changes in investor holding periods of stocks are a function of variations in levels and shocks of trading costs. We construct a value weighted portfolio of all stocks listed on the London Stock Exchange, over the time period of 1990–2014 in order to empirical examine the model. We establish that levels have a greater impact then unanticipated trading costs on investor holding periods. Our article outlines the importance of trading costs in determining investor portfolio construction.     

Cognitive abilities and portfolio choice

We study the relation between cognitive abilities and stockholding using the recent Survey of Health, Ageing and Retirement in Europe (SHARE), which has detailed data on wealth and portfolio composition of individuals aged 50+ in 11 European countries and three indicators of cognitive abilities: mathematical, verbal fluency, and recall skills. We find that the propensity to invest in stocks is strongly associated with cognitive abilities, for both direct stock market participation and indirect participation through mutual funds and retirement accounts. Since the decision to invest in less information-intensive assets (such as bonds) is less strongly related to cognitive abilities, we conclude that the association between cognitive abilities and stockholding is driven by information constraints, rather than by features of preferences or psychological traits.