Investor Overconfidence and Trading Volume

The proposition that investors are overconfident about theirvaluation and trading skills can explain high observed tradingvolume. With biased self-attribution, the level of investoroverconfidence and thus trading volume varies with past returns.We test the trading volume predictions of formal overconfidencemodels and find that share turnover is positively related tolagged returns for many months. The relationship holds for bothmarket-wide and individual security turnover, which we interpretas evidence of investor overconfidence and the disposition effect,respectively. Security volume is more responsive to market returnshocks than to security return shocks, and both relationshipsare more pronounced in small-cap stocks and in earlier periodswhere individual investors hold a greater proportion of shares.(JEL G11, G12)     

The Ex-Dividend Day Behavior of Canadian Stock Prices: Tax Changes and Clientele Effects

With some simple assumptions the ex-dividend day price drop and the associated dividend can be used to measure the market's marginal tax rate. Previous research has estimated the implied tax rate for the U.S. This paper extends the analysis to Canada, where the tax treatment of dividends and capital gains is completely different from that in the U.S. The paper also presents estimates from 1970–80 to include four distinct periods when the tax treatment was different. Hence, we include an implied test of market efficiency as well as those for the “relevance” of taxes and the existence of tax based dividend clienteles.     

Options,Taxes, and Ex-Dividend Day Behavior

A novel way of estimating the expected as opposed to the actual share price fall-off is developed using option prices. This method is applied to the UK Traded Options Market using data from 1979 to 1984. The results show that: (a) the average expected fall-off implicit in option prices is around 55 to 60% of the dividend and significantly different from it. The fall-off also varied inversely with the dividend yield, which is consistent with the prediction of the “tax clientele hypothesis.” (b) The estimates of the expected fall-off were not significantly different from the actual fall-off. (c) Finally, the results imply that the usual assumption made in valuing options on dividend-paying stocks, that the fall-off is equal to the dividend, would lead to downward-biased estimates of the option value.     

Limit Order Adjustment Mechanisms and Ex-Dividend Day Stock Price Behavior

Unlike the NYSE, the Toronto Stock Exchange (TSX) does not adjust prices in the outstanding limit orders on ex-dividend days. We find that TSX ex-day stock price behavior differs from that on the NYSE in several key aspects. In each case, the TSX ex-day behavior is consistent with the lack of a limit order adjustment mechanism. Our findings confirm that market microstructure is an important factor that contributes to the observed Canadian ex-day price behavior. Our findings also resolve the puzzle of the relatively small ex-day price drop in Canada.     

Individual Investor Trading and Stock Returns

This paper investigates the dynamic relation between net individual investor trading and short‐horizon returns for a large cross‐section of NYSE stocks. The evidence indicates that individuals tend to buy stocks following declines in the previous month and sell following price increases. We document positive excess returns in the month following intense buying by individuals and negative excess returns after individuals sell, which we show is distinct from the previously shown past return or volume effects. The patterns we document are consistent with the notion that risk‐averse individuals provide liquidity to meet institutional demand for immediacy.     

信息透明度与散户的交易选择——基于深圳交易所上市公司的实证研究

股市的风险往往归因于散户的交易,大力发展机构投资者成为提高市场效率的不可挑战的信条。透过微结构数据的分析,本文发现散户交易存在过度自信特征,可能过度高估私有信息精确度,导致错误定价信息。分离了过度自信的因素后,本文发现信息透明度为散户交易的重要依据。更为重要的是本文发现,相对于散户而言,信息透明度对机构投资者交易的影响较低,说明了信息透明度对处于信息劣势的投资者具有更重要的现实意义。     

Positive Feedback Trading and Investor Sentiment

This article examines how investor sentiment affects positive feedback trading behavior. By analyzing the daily closing total return of CSI 300 index and its individual returns of stocks, we find that relatively high or low sentiment induces active positive feedback trading. With a specific indicator of sentiment, we explain the microstructure setting of the relationship between positive feedback trading and sentiment. We adopt the classical feedback model from Sentana and Wadhwani (1992) to measure positive feedback trading behavior. By adding sentiment factor to the model, we successfully explain how sentiment influences the behavior of both feedback traders and rational investors. The empirical findings suggest that positive feedback traders are more likely to trade when the prices of most securities move forward together. When the sentiment of feedback traders is at an intermediate level, the feedback trading behavior is insignificant.     

Time Variation of Ex-Dividend Day Stock Returns and Corporate Dividend Capture: A Reexamination

This paper documents some empirical facts about ex-day abnormal returns to high dividend yield stocks that are potentially subject to corporate dividend capture. We find that average abnormal ex-dividend day returns are uniformly negative in each year after the introduction of negotiated commission rates and that time variation in ex-day returns during the negotiated commission rates era is consistent with corporate tax-based dividend capture. Ex-day returns are more negative when the tax advantage to corporate dividend capture is greatest and more positive when increases in transaction costs and risk reduce incentives to engage in corporate tax-based dividend capture.     

投资者分歧、异常交易量和股票横截面收益率预测——基于中国股票市场的经验证据

本文定义月度异常交易量为本月与上个月交易金额的比值,发现中国市场月度收益率与滞后一个月的异常交易量显著负相关。在控制了公司规模、账面市值比、流动性以及动量效应等指标后仍然具有显著的解释作用。进一步研究表明,在出现高异常交易量后的12个月内,换手率和特质性波动率都有大幅上升。本文认为,交易量上升代表着市场分歧程度和受关注程度的增加,在卖空约束下会使得股票价值高估,从而造成未来收益率下降。     

Investor Trading Behavior and Sentiment in Futures Markets

This study investigates the effects of investor trading behavior and investor sentiment on futures market return. We find that the spot investor trading behavior, futures investor trading behavior, spot market sentiment, and futures market sentiment all have positive effects on daily futures returns in Chinese financial market. More importantly, we show that the effect of (spot) futures investor trading behavior has better explanatory power than (spot) futures market sentiment on futures returns. Further supporting our results, high investor trading behavior and high investor sentiment strengthen the positive relation between sentiment-returns and behavior-returns.     

Does Trading Improve Individual Investor Performance?

From 52,649 accounts and 10,615,117 transaction records obtained from a renowned brokerage house in Taiwan we find that individual investors purchase 73.4% and sell 64.5% of their stock portfolios each month. This is more than ten times the statistics for their U.S. counterparts. In general, individual investors have positive abnormal returns from factor-based models. However, they would have earned higher returns from following a buy-and-hold strategy. We find a U-shaped rather than a monotonic turnover and performance relation. The results do not support the overconfidence argument proposed by Barber and Odean (2000, 2001) nor does the rational model of Grossman and Stiglitz (1980). We find that investors with large portfolio values tend to be informed traders whose excess trading does create performance value. We also investigate whether men are more overconfident than women and find that even though men trade more excessively than women, men's performance measures are not dramatically lower than women's. Specifically, the own-benchmark adjusted gross return for men is higher than that for women. The regression results indicate that electronic traders rather than men are overconfident.     

Individual Investor Trading and Return Patterns around Earnings Announcements

This paper provides evidence of informed trading by individual investors around earnings announcements using a unique data set of NYSE stocks. We show that intense aggregate individual investor buying (selling) predicts large positive (negative) abnormal returns on and after earnings announcement dates. We decompose abnormal returns following the event into information and liquidity provision components, and show that about half of the returns can be attributed to private information. We also find that individuals trade in both return‐contrarian and news‐contrarian manners after earnings announcements. The latter behavior has the potential to slow the adjustment of prices to earnings news.     

信用债券市场流动性与投资者异质性研究

流动性是信用债券市场投资者和监管者高度关注的问题。从债权终止风险的视角出发,本文分析了投资者在投资期限习惯和信用品质偏好上的差异而产生的债券估值差异。可以发现,在配置型和交易型投资者并存的信用债券市场上,流动性水平与投资者异质性有关。提高配置型投资者比例、提高两类投资者间的异质性、降低同类投资者间的异质性能改善市场流动性。因此,培育合理的投资者结构对促进信用债券市场流动性建设具有重要意义。     

Price Momentum and Trading Volume

This study shows that past trading volume provides an important link between 'momentum' and 'value' strategies. Specifically, we find that firms with high (low) past turnover ratios exhibit many glamour (value) characteristics, earn lower (higher) future returns, and have consistently more negative (positive) earnings surprises over the next eight quarters. Past trading volume also predicts both the magnitude and persistence of price momentum. Specifically, price momentum effects reverse over the next five years, and high (low) volume winners (losers) experience faster reversals. Collectively, our findings show that past volume helps to reconcile intermediate-horizon 'underreaction' and long-horizon 'overreaction' effects.     

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。     

The Ex-Dividend Day Behavior of Stock Prices: A Re-Examination of the Clientele Effect

Past studies have documented an ex-dividend day price drop which is less than the dividend per share and positively correlated with the corresponding dividend yield. In contrast to prior work, we show that, without additional information, the marginal tax rates cannot be inferred from this phenomenon which is, therefore, not necessarily the result of a tax induced clientele effect. Despite adjustments for potential biases in earlier work, however, the correlation between the ex-dividend relative price drop and the dividend yield is still positive which is consistent with a tax effect and a tax induced clientele effect.     

投资者异质、信息搜索与中国基金赎回之谜

基金赎回之谜是中国基金业的特有现象。本文通过构建包含投资者异质性、投资者信息搜索行为两种因素的投资者选择模型,证明了基金赎回之谜的存在,并进一步发现了另一种形式的基金赎回之谜:基金资金净流入与基金收益波动性呈反向关系。在此基础上,本文利用面板数据模型证实了这种赎回异象的存在。     

Weekend Effect, 'Reverse' Weekend Effect, and Investor Trading Activities

Abstract:   In this study, we document evidence of a 'reverse' weekend effect – whereby Monday returns are significantly positive and they are higher than the returns on other days of the week – over an extended period of eleven years (from 1988 to 1998). We also find that the 'traditional' weekend effect and the 'reverse' effect are related to firm size in that the 'traditional' weekend effect tends to be associated with small firms while the 'reverse' weekend effect tends to be associated with large firms. In addition, we find that during the period in which the 'reverse' weekend effect is observed, Monday returns for large firms tend to follow previous Friday returns when previous Friday returns are positive , but they do not follow the previous Friday returns when Friday returns are negative . Furthermore, we find that during the period in which the 'reverse' weekend effect is observed, Monday returns are positively related to the volume of medium‐size and block transactions, but negatively related to the volume of odd‐lot transactions.