投资者关注与股价崩盘风险:抑制还是加剧?

本文以2010—2017年中国A股上市公司为样本,考察了投资者关注影响股价崩盘风险的客观表现和传导路径。研究发现,投资者关注度的提高会显著加剧下一期的股价崩盘风险,存在“关注度的崩盘效应”;分组检验发现,关注度的崩盘效应仅在机构持股比例低的公司和市场处于牛市状态下存在;路径检验发现,投资者关注不存在信息路径,没有改善公司信息透明度,但存在部分的情绪路径,提高了股价同步性和投资者情绪,从而加剧了股价崩盘风险。建议监管部门重视投资者关注对股价带来的冲击,通过进一步提高机构者持股比例,缓解情绪过热导致的定价错误程度,降低股价崩盘风险。     

The informativeness of domestic and foreign investors’ stock trades: Evidence from the perfectly segmented Chinese market

This paper uses the perfect market segmentation setting in China's stock market to compare the information content of the stock trades of domestic and foreign investors. We study 76 firms that issue both A-shares (for domestic investors) and B-shares (for foreign investors) and compare the price discovery role of the two segmented markets in China. Before Feb 19, 2001, the A-share market led the B-share market in price discovery, as the signed volume and quote revision of the A-share market had strong predictive ability for B-share quote returns, but not vice versa. After Feb 19, 2001, because some domestic investors were allowed to invest in the B-share market, we find evidence for a reverse causality from the B-share to the A-share market. Nevertheless, the [Hasbrouck (1995). One security, many markets: determining the contributions to price discovery, Journal of Finance 50, 1175–1199.] information share analysis reveals that A-shares continue to dominate the price discovery process.     

投资者情绪对股价联动的影响--基于中国证券市场的实证研究

分别从个股层面以及市场层面探讨投资者情绪对中国证券市场股价联动现象的影响。实证揭示：（1）中国证券市场存在显著的股价联动效应。（2）投资者情绪对股价联动现象存在显著的负向影响。（3）个股层面的投资者情绪变量对股价联动的影响大于市场层面的综合情绪变量。（4）投资者情绪对不同行业的股价联动的影响存在差异。     

Investor Sentiment and Stock Returns: Evidence from Turkey

This paper investigates the relation between investor sentiment and stock returns on the Istanbul Stock Exchange, employing vector autoregressive (VAR) analysis and Granger causality tests. The sample period extends from July 1997 to June 2005. In the VAR models, stock portfolio returns and investor sentiment proxies are used as endogenous variables. Two dummy variables accounting for natural and economic crises are used as exogenous variables. The analysis results suggest that, excepting shares of equity issues in aggregate issues, stock portfolio returns seem to affect all investor sentiment proxies, namely closed-end fund discount, mutual fund flows, odd-lot sales-to-purchases ratio, and repo holdings of mutual funds. Investor sentiment does not appear to forecast future stock returns; only the turnover ratio of the stock market seems to have forecasting potential.     

投资者情绪与中国股票市场过度波动

本文分析中国投资者分类情绪及信心变化与中国股票市场波动的同期及动态影响。实证结果表明:就同期而言,中国投资者对国内经济基本面的信心变化以及中国股票市场波动,将影响投资者对国际经济金融环境的信心;就中长期而言,中国投资者情绪中关于国内经济基本面和国内经济政策的信心变化是影响中国股票市场过度波动的重要原因;中国投资者关于国际经济金融环境的信心深受国内经济基本面的信心变化的影响,中国投资者对A股市场估值的判断,受投资者对A股市场的股票估值信心以及国内经济基本面信心变化影响较大。     

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.     

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.     

Shareholders’ requirements for corporate environmental disclosures: A cross country comparison

We survey individual shareholders in Australia, the UK and the US regarding corporate environmental disclosures. In general, respondents in the three countries are interested in, and positively disposed towards, these disclosures. We observe country and gender differences with Australian and female respondents more in favour of environmental reporting than others. Specifically, respondents require disclosure of an overview of environmental risks and impacts, the environmental policy, performance against measurable environmental targets and information on a range of environmental costs. Most shareholders require environmental disclosures to be audited. Shareholders call for environmental information because they believe managers should be accountable to shareholders for their companies’ environmental impacts. Furthermore, shareholders have indicated the uses for specific types of environmental information. Our results imply that legislators, standard setters and companies have to consider the policy implications of these shareholder views.     

Investor Sentiment Influence on the Risk-Reward Relation in the Taiwan Stock Market

We examine the influence of investor sentiment on the risk-reward relationship in the Taiwan stock market. Regression results show that the risk-reward relationship is weakly positive (significantly negative) under low (high) levels of investor sentiment. Granger causality tests indicate unidirectional, not bidirectional, causal relationships. Moreover, the negative return-variance relationship is more strongly characteristic of the over-the-counter index than of the Taiwan Stock Exchange weighted index, indicating that an unreasonable risk-reward trade-off may be more prevalent in emerging markets than in mature markets. Finally, the Wald test demonstrates that industry effects on the risk-reward relationship may be negligible.     

Barron’s most respected companies

In this study, we investigate the performance of firms selected to Barron’s Most Respected Companies against the S&P 500 and a matched sample over a short‐term, long‐term and operational basis. The most respected companies exhibit a statistically significant announcement effect associated with their selection and outperform the S&P 500 over longer‐holding periods. The overall sample and those firms identified as top picks outperform a matched sample of firms. In addition, as measured by changes in the return on assets, the post‐selection operational performance of the most respected firms was better than that of the matched firms.     

Firm life cycle,corporate risk‐taking and investor sentiment

This study investigates the corporate risk‐taking and the performance consequences at different stages of the firm life cycle. We find that risk‐taking is higher in the introduction and decline stages of the life cycle, but lower in the growth and mature stages. We also find that risk‐taking during introduction and decline stage (growth and maturity stage) affects future performance adversely (positively). We also document that managerial risk‐taking propensities increase during periods of high investor sentiment and firms in different life cycle stages respond to sentiment differently. Collectively, these results suggest that the firm life cycle has explanatory power for corporate risk‐taking behaviour.     

Inter‐temporal changes in analysts’ forecast properties under the Australian continuous disclosure regime

Corporate disclosure regulations are important mechanisms for investor protection. This study examines the inter‐temporal changes in analysts’ forecast properties over the period 1988–2001 as Australia’s continuous disclosure regulation and enforcement intensity changed. The effectiveness of the continuous disclosure regime has been a question of interest since its inception, but research in this area is limited. Our results suggest that analysts’ forecast accuracy and dispersion improved for sample firms in response to the proposal and introduction of continuous disclosure regulations. However, following increased enforcement from 1998, analysts’ forecast dispersion deteriorated for small firms, possibly due to a decrease in private information received by financial analysts as regulators became more proactive in enforcing the ban on selective disclosure.     

How Does the Change in Investor Sentiment over Time Affect Stock Returns?

We examine how the change in investor sentiment (IS) over time (the IS trend) affects stock returns. The turnover rates of trading shares, trading value, and transactions, three market measures of trading activity, have been demonstrated to meet the psychometric criteria for measuring the IS trend. The ratio of market price to book value and the short-selling turnover ratio are inappropriate proxies. The empirical results indicate that the influence of the IS trend on returns depends on the direction of the trend (optimistic or pessimistic) and stock characteristics of individual holdings and on arbitrage constraint. The effectiveness of arbitrage, sentiment-driven mispricing, and market intervention are discussed.     

Firm incentives,institutional complexity and the quality of “harmonized” accounting numbers

In this paper, we investigate how firm reporting incentives and institutional factors affect accounting quality in firms from 26 countries. We exploit a unique multicountry setting where firms are required to comply with the same set of international reporting standards. We develop an approach of cross-country comparisons allowing for differences between firms within a country and we investigate the relative importance of country- versus firm-specific factors in explaining accounting quality. We find that financial reporting quality increases in the presence of strong monitoring mechanisms by means of ownership concentration, analyst scrutiny, effective auditing, external financing needs, and leverage. Instability of business operations, existence of losses, and lack of transparent disclosure negatively affect the quality of accounting information. At the country level, we observe better accounting quality for firms from regulatory environments with stronger institutions, higher levels of economic development, greater business sophistication, and more globalized markets. More importantly, we find that firm-specific incentives play a greater role in explaining accounting quality than countrywide factors. This evidence suggests that institutional factors shape the firm's specific incentives that influence reporting quality. Our findings support the view that the global adoption of a single set of accounting standards in isolation is not likely to lead to more comparable and transparent financial statements unless the institutional conditions and the firm-specific reporting incentives also change.     

Intangible assets,IFRS and analysts’ earnings forecasts

We investigate whether the adoption of International Financial Reporting Standards (IFRS) in 2005 by Australian firms has been associated with a loss of potentially useful information about intangible assets. We find that the negative association between the accuracy and dispersion of analysts’ earnings forecasts and aggregate reported intangibles previously documented by Matolcsy and Wyatt (2006 ) becomes stronger subsequent to IFRS adoption, primarily for firms with high levels of underlying intangible assets. Our result is largely attributable to reported goodwill, rather than other intangible assets, suggesting that the impairment approach to goodwill valuation required by IFRS conveys more useful information than does the former straight‐line amortization approach. When we investigate a sub‐sample of firms that report lower intangibles under IFRS than under the prior Australian GAAP, we do find some evidence consistent with a loss of useful information relating to intangibles.     

The effect of investor sophistication on the influence of nonfinancial performance indicators on investors’ judgments

This paper presents an experiment that examines how enhanced disclosure of nonfinancial performance indicators affects the stock‐price estimates of nonprofessional and professional investors. Participants were provided with a case study containing excerpts from a hypothetical company’s annual report. The experiment was a 2 (nonprofessional and professional) × 3 (positive nonfinancial performance indicators, negative nonfinancial performance indicators, and financial information only) between‐subjects design. Consistent with conservatism, the nonprofessional investors underreacted in their stock‐price estimates to the positive nonfinancial disclosures, compared with professional investors with task‐specific knowledge. The results from this study suggest that the value of enhanced disclosure of this type may not flow equally to all users of financial reports, if conservatism, and lack of task‐specific knowledge, adversely affect their decision‐making.     

How Does Investor Sentiment Affect Stock Market Crises? Evidence from Panel Data

We test the impact of investor sentiment on a panel of international stock markets. Specifically, we examine the influence of investor sentiment on the probability of stock market crises. We find that investor sentiment increases the probability of occurrence of stock market crises within a one‐year horizon. The impact of investor sentiment on stock markets is more pronounced in countries that are culturally more prone to herd‐like behavior, overreaction and low institutional involvement.