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1.
本文采用月相变化这一外生变量衡量投资者情绪的周期性波动,使研究避开了复杂的社会影响过程而专注于外生性的影响。研究发现,股票收益的运行轨迹与投资者情绪周期性波动的轨迹相同,即股票收益会随着投资者情绪的周期性波动而呈现出同样频率的循环性波动。这一现象无论在机构投资者重仓还是中小投资者重仓的股票中均存在,而机构投资者持股比例的增加可以减弱投资者情绪周期波动对决策行为的影响。股市周期作为一种经济环境的刺激变量,在牛、熊市下对投资者机体变量的作用不同,导致其反应变量出现不同程度的变化,在牛市阶段,投资者情绪周期波动对股票收益的影响更为强烈。与非周期性行业相比,投资于周期性行业时,决策所涉及的风险和不确定性更大,放大了情绪波动对于决策行为的作用,导致股票收益随投资者情绪周期性波动而循环性波动的现象在周期性行业中更为明显。  相似文献   

2.
中国股市个体投资者羊群行为影响因素分析   总被引:2,自引:0,他引:2  
中国股市投资者表现出显著的羊群行为,心理因素是投资者羊群行为产生的主要原因,情绪、股票历史收益率和股票规模等也是影响投资者行为的重要因素。本文利用我国股市个体投资者交易数据,对影响投资者羊群行为的因素进行了实证研究,探讨了我国股市个体投资者羊群行为的特征。  相似文献   

3.
近年来,关于股市"特质波动率之谜"的研究众多,但尚未有一致的认识。本文运用行为金融学的思想,基于前景理论,从理论和实证两方面研究投资者行为是否对股票特质风险与预期收益的关系产生影响。通过二维分组法和横截面回归法实证发现:我国股市特质风险与预期收益间存在反向关系,并且这种反向关系在股票处于获利域时得到进一步加强,说明股票未实现的资本利得确实影响了特质风险与预期收益间的关系。本文结合我国股市发展现状合理解释了实证结果,有利于进一步深化对投资者行为的重要性的认识。  相似文献   

4.
本文从整体投资者情绪和投资者情绪分歧两个维度,考察投资者情绪截面特征对股票定价的影响,并探究投资者情绪对股票定价的影响机制。一方面,分别使用投资者情绪横截面均值和方差表征整体投资者情绪和投资者情绪分歧,并构建同时包含整体投资者情绪和投资者情绪分歧的资产定价模型。另一方面,使用沪深A股上市公司2007—2020年面板数据,实证检验上述理论模型的结论。理论和实证研究表明,整体投资者情绪和投资者情绪分歧均显著正向影响股票收益,两者的交互作用负向影响股票收益;整体投资者情绪和投资者情绪分歧均显著提高风险承担水平,而风险承担水平的提高会增加股票收益,即风险承担在投资者情绪对股票收益的影响中起到了中介作用。  相似文献   

5.
谭小芬  李兴申  苟琴 《金融研究》2022,504(6):153-170
本文分析了全球投资者国别风险情绪对跨境股票资本流动的影响,通过构造一般均衡跨期选择模型,刻画了投资者国别风险情绪负向影响跨境股票净资本流入的理论机理以及投资者风险厌恶程度的调节作用,并基于EPFR全球股票型基金微观数据和由大数据文本分析技术构造的全球投资者国别层面风险情绪指标进行实证检验。结果表明:第一,全球投资者对一国的国别风险情绪上升会推升该国的整体风险溢价水平,降低跨境股票型基金净资本流入,尤其是风险厌恶度较高的被动型、开放式和ETF基金;第二,一国金融市场成熟度上升和汇率弹性增强可以缓解全球投资者国别风险情绪对跨境股票型基金净资本流入的负向影响;第三,在全球风险情绪极端低或者各国股票型基金净资本流入极端高的时期,全球投资者国别风险情绪的影响更为显著。  相似文献   

6.
机构投资者的投资行为对股票市场的风险与收益产生了极大的影响,机构投资者的大量参与有助于股票市场的稳定、特质风险的分散以及超额收益的减少。文章选取机构投资者持股占股票市值比例这一指标来刻画机构投资者的行为,检验机构持股比例、特质风险和股票收益之间的关系。实证发现,在中国股市,特质风险与股票收益呈显著的正相关关系;机构大量持股有助于降低股票的特质风险;机构投资者持股比例越低的股票,特质风险越大,股票预期收益越高。  相似文献   

7.
本文以2004—2014年中国开放式股票型基金为研究对象,从股市周期的角度探讨投资者申购和赎回基金的影响因素和"赎回异象"。实证结果表明:在不区分市场周期的情况下,开放式股票型基金的资金流量和历史业绩总体呈正相关关系,投资者表现为追逐业绩而相对忽视风险。不同股市周期下的投资者选择呈现出不对称性,即在牛市期间基金投资者表现为追逐基金历史业绩,在熊市期间表现为对基金历史业绩不敏感。  相似文献   

8.
股价崩盘作为金融市场上普遍存在并且具有广泛影响力的极端现象,对股票的定价产生了至关重要的作用。本文主要研究我国股市中股票的崩盘系统性风险,研究发现:(1)股票的崩盘系统性风险与预期收益率显著正相关,并且对冲组合可以获得8.86%的年化收益;(2)投资者的博彩型股票偏好和吉祥数字偏好都会显著影响崩盘系统性风险与预期收益率之间的关系。本文的研究对于进行投资决策、风险管理以及理解投资者行为都具有参考意义。  相似文献   

9.
关于违约风险与股票收益的关系,现有文献中存在着争议。本文使用国内A股市场2000-2016年间的数据,结合Moody’s KMV模型构建期望违约概率作为违约风险的代理变量,对二者关系进行重新探索。经过初步分析发现违约风险与股票收益存在显著负相关,即国内股市存在"违约异象"(default risk anomaly)。为此,本文从公司规模会为股东带来潜在利益的角度展开研究,并对"违约异象"进行了解释。结论表明:(1)在控制住公司规模的交互影响后,违约风险与股票收益表现出符合金融理论预期的正相关关系;(2)在相同违约风险下,规模越大的公司,投资者要求的违约风险溢价越小。同时,随着违约风险上升,公司规模的影响会加大;(3)在公司规模足够大时,违约风险与股票收益总体上会表现出负相关关系,这是导致"违约异象"的主要原因之一。随着近年来我国违约事件增多以及破产制度和退市制度逐步完善,投资者势必会更加重视违约风险与股票收益之间的关系及其影响因素,因此本研究具有一定的现实意义。  相似文献   

10.
我国上市公司现金股利支付率过低、股票市场缺乏做空机制这两个基本因素导致我国股市风险突出,股民对股市信心大失,股市陷入低迷;与股指期货相比,股票期权交易更能给投资者带来安全感,更能活跃股市;推出股票期权交易不仅是必要的,而且是可行的.  相似文献   

11.
In this paper we examine the proposition that small investor sentiment, measured by the change in the discount/premium on closed‐end funds, is an important factor in stock returns. We conduct an out‐of‐sample test of the investor sentiment hypothesis in a market environment that is more likely to be prone to investor sentiment than the USA. We fail to provide supporting evidence for the claim of Lee et al. (1991) that investor sentiment affects the risk of common stocks. Consistent with Elton et al. (1998) , who show that investor sentiment does not enter the return generating process, our tests do not detect investor sentiment in a capital market that is more susceptible to small investor sentiment. Our results provide additional support against the claim that investor sentiment represents an independent and systematic asset pricing risk.  相似文献   

12.
We propose to measure investor climate sentiment by performing sentiment analysis on StockTwits posts on climate change and global warming. In financial markets, stocks of emission (carbon-intensive) firms underperform clean (low-emission) stocks when investor climate sentiment is more positive. We document investors overreaction to climate change risk and reversal in longer horizons. Salient but uninformative climate change events, such as the release of a report on climate change and abnormal weather events, facilitate the investor learning process and correction of the mispricing.  相似文献   

13.
This paper explores the time-varying institutional investor preference for lottery-like stocks. On average, institutional investor holdings reflect an aversion to lottery-like stocks. However, I find that an institutions’ aversion to lottery-like stocks is reduced when investor sentiment is low. Moreover, I find that during low sentiment periods, institutional investors have abnormally high trading profits in more positively skewed stocks. These results suggest that institutions reduce their aversion toward lottery-like stocks during low sentiment periods to profitably trade in lottery-like stocks.  相似文献   

14.
We test whether short selling is destabilizing comparing distressed financial firms to other firms using NYSE transactions records covering 4 years including the recent financial crisis. Aggressive short-selling is sometimes destabilizing by some measures, but its impact is small, vanishes quickly, is not necessarily larger for distressed firms or during the crisis, and is accompanied by other stabilizing effects. The evidence does not validate theoretical predictions from models of destabilizing speculative or predatory trading. Aggregate short-selling is largely unrelated to market-wide investor sentiment, credit risk, and ex ante volatility. Aggressive liquidation of long positions typically has more impact than short selling. Thus, the data cannot justify the restrictions on short sales of financial stocks imposed in September 2008.  相似文献   

15.
处置效应是指投资者过早卖出盈利股票而长期持有亏损股票的现象。大量文献表明金融市场投资者存在显著的处置效应,但其产生的原因和机理存在争议。本文在前景理论框架下,构建了包含投资者非理性预期的离散时间投资组合决策模型,发现处置效应随投资者情绪升高而减弱。本文使用我国某券商2007—2009年近177万个人投资者股票账户的交易数据进行了实证分析,得到与理论模型预测的一致结果,即投资者情绪与投资者处置效应之间呈现显著的负相关关系。而且,受情绪影响,投资者处置效应在估值难度较大的股票中更弱。本文结论对理解投资者处置效应、优化投资者卖出决策和加强资本市场基础制度建设具有一定理论和实践意义。  相似文献   

16.
We undertake a firm-level analysis of the relation between National Football League (NFL) game outcomes and the return patterns of Nasdaq firms headquartered geographically near the NFL teams. We find that a team's loss leads to lower next-day returns for locally headquartered stocks and that this impact increases for a surprising loss or a critical game loss. The negative effects of game losses are stronger for stocks that are more vulnerable to shifts in sports sentiment. Our results suggest that the game outcomes of local sports teams influence investor sentiment, which significantly affects the returns of localized trading stocks.  相似文献   

17.
Investor Sentiment and the Cross-Section of Stock Returns   总被引:25,自引:0,他引:25  
We study how investor sentiment affects the cross‐section of stock returns. We predict that a wave of investor sentiment has larger effects on securities whose valuations are highly subjective and difficult to arbitrage. Consistent with this prediction, we find that when beginning‐of‐period proxies for sentiment are low, subsequent returns are relatively high for small stocks, young stocks, high volatility stocks, unprofitable stocks, non‐dividend‐paying stocks, extreme growth stocks, and distressed stocks. When sentiment is high, on the other hand, these categories of stock earn relatively low subsequent returns.  相似文献   

18.
Retail Investor Sentiment and Return Comovements   总被引:3,自引:1,他引:3  
Using a database of more than 1.85 million retail investor transactions over 1991–1996, we show that these trades are systematically correlated—that is, individuals buy (or sell) stocks in concert. Moreover, consistent with noise trader models, we find that systematic retail trading explains return comovements for stocks with high retail concentration (i.e., small‐cap, value, lower institutional ownership, and lower‐priced stocks), especially if these stocks are also costly to arbitrage. Macroeconomic news and analyst earnings forecast revisions do not explain these results. Collectively, our findings support a role for investor sentiment in the formation of returns.  相似文献   

19.
Wen He  Ki Hoon Hong  Eliza Wu 《Abacus》2020,56(4):535-560
We investigate whether investor sentiment affects the relationships between accounting variables and contemporaneous stock returns. Using price-relevant accounting variables identified by Chen and Zhang (2007) and the investor sentiment index constructed by Baker and Wurgler (2006), we find that the value relevance of accounting variables is collectively lower in high sentiment periods than in low sentiment periods. More importantly, earnings yield appears to be more related to contemporaneous stock returns in high sentiment periods, while other accounting variables are more related to stock returns in low sentiment periods. The effect of investor sentiment on the value relevance of accounting information is stronger for firms that are more difficult to value and to arbitrage.  相似文献   

20.
We use mutual fund flows as a measure of individual investor sentiment for different stocks, and find that high sentiment predicts low future returns. Fund flows are dumb money–by reallocating across different mutual funds, retail investors reduce their wealth in the long run. This dumb money effect is related to the value effect: high sentiment stocks tend to be growth stocks. High sentiment also is associated with high corporate issuance, interpretable as companies increasing the supply of shares in response to investor demand.  相似文献   

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