新会计准则、会计信息质量与股价同步性

本文以2004—2008年我国A股上市公司为样本,基于私有信息交易理论,分析会计信息质量如何影响股价同步性,以及新会计准则的改革如何影响了两者之间的相关性。结果发现,会计信息质量与股价同步性正相关,并且这种正相关性仅存在于负向盈余管理的情况,而在正向盈余管理的情况中两者之间的正相关性不明显,这与我国股票市场的卖空限制有关。同时,2007年新会计准则质量的提高显著减弱了会计信息质量与股价同步性之间的正相关关系。本文不但丰富了会计信息质量和股价同步性的相关文献,而且对我国资本市场加强会计准则改革和会计信息监管具有一定的参考价值。     

Messages in online stock forums and stock price synchronicity: Evidence from China

Online stock forums allow investors to share information and exchange opinions, which facilitates the incorporation of firm-specific information into prices and reduces stock price synchronicity. However, prior research presents mixed evidence as to the value of messages in online forums. Using the information of the Eastmoney Guba online forum in China, we find a causal and negative relation between Guba messages and stock price synchronicity. The finding is robust after accounting for media reports and firm fixed effects and using both an instrumental variable analysis and an experimental design that exploits exogenous changes in the authenticity of Guba messages. We find the impact of Guba information is attributed to its roles in both information dissemination and investor interaction and is more pronounced for messages with a negative narrative tone. Additional tests suggest Guba messages improve firm information disclosure quality, reduce stock price crash risk and decrease stock return volatility synchronicity.     

Accounting Ratios and the Cross‐section of Expected Stock Returns

Under clean‐surplus accounting, the log return on a stock can be decomposed into a linear function of the contemporaneous log return on equity, the contemporaneous log dividend–price ratio (if the stock pays a dividend), and both the contemporaneous and lagged values of the log book‐to‐market equity ratio. This paper studies the implications of this decomposition for the cross‐section of conditional expected stock returns. The empirical analysis reveals that the log accounting ratios capture cross‐sectional variation in both the conditional mean and conditional variance of log stock returns, which is consistent with the decomposition. It also brings fresh insights to the relation between firm size (market equity) and conditional expected stock returns. The evidence indicates that the conditional median return increases with firm size, while the conditional return skewness decreases with firm size. Empirically, the skewness effect outweighs the median effect, leading to the well‐documented inverse relation between size and average returns. The results of out‐of‐sample tests suggest that investors could use the information provided by the observed values of the log accounting ratios to formulate more effective portfolio strategies.     

THE ROLE OF ACCOUNTING INFORMATION IN STOCK MARKET LIBERALIZATION: EVIDENCE FROM KOREA

Stock market liberalization is a decision by a country’s government to allow foreigners to buy securities in that country’s capital market. This study examines how the liberalization of the Korean stock market affected stock price behavior and changed the role of accounting information for investment decisions. The Korean stock market opened its door to foreign investment in 1991. Prior to this, market inefficiencies, such as the superfluous co-movement of stock prices with industry or market indices or investment based on rumor and speculation, were widespread. Since the opening of the stock market to foreigners, a more rational pricing behavior has emerged. This setting provides a unique opportunity to investigate how stock price behavior has changed with market liberalization and what was the role of accounting information in this process. Our results indicate that the co-movement behavior of stock prices by industry decreased and stock price differentiation based on individual firm characteristics increased after market liberalization. The results also show that the explanatory power of accounting numbers increased after market liberalization. Overall, the results imply that foreign investors contributed to the improvement of market efficiency with the opening up of capital markets in Korea. We believe that our results provide useful evidence to other capital markets that are in a similar situation.     

Attention! Distracted institutional investors and stock price crash

Using the extreme returns of firms in unrelated industries of institutional shareholders' portfolios as exogenous variations in institutional investor distraction (Kempf et al. 2017), we find a positive and significant relation between institutional shareholder distraction and stock price crash risk. The effect is associated with weakened monitoring, and it becomes stronger when alternative corporate governance is weaker and when managers' incentives to hoard bad information are stronger. Managers reduce firms' accounting conservatism when institutional investors become distracted, which is evidence of an increased motivation to hoard bad news. Overall, our findings shed additional light on the important monitoring role of institutional investors in corporate governance.     

Media coverage and stock price synchronicity

This paper investigates the relation between the extent of media coverage and stock price synchronicity and whether this relation varies across different institutional infrastructures. We document three notable findings. First, media coverage is negatively associated with stock price synchronicity, suggesting that the media facilitates the incorporation of firm-specific information into stock prices. Second, a firm's information environment and corporate governance play a moderating role in the relation between media coverage and the synchronicity of stock prices. Third, the synchronicity-reducing effect of media coverage is stronger in countries with weak institutional infrastructures. Overall, our study suggests that media coverage is an important determinant of stock price synchronicity.     

State Ownership,Political Institutions,and Stock Price Informativeness: Evidence from Privatization

In this paper, we examine the relation between government ownership and stock price informativeness around the world. Using a sample of privatized firms from 41 countries between 1980 and 2012, we find strong and robust evidence that state ownership is associated with lower firm-level stock price variation, i.e., stock price informativeness. Furthermore, we find that the relation between state ownership and stock price informativeness depends on political institutions. In particular, the adverse effects of state ownership on stock price informativeness are more pronounced in countries with lower political rights (i.e., lower political constraints on the government).     

Time Variation in the Covariance between Stock Returns and Consumption Growth

The conditional covariance between aggregate stock returns and aggregate consumption growth varies substantially over time. When stock market wealth is high relative to consumption, both the conditional covariance and correlation are high. This pattern is consistent with the “composition effect,” where agents' consumption growth is more closely tied to stock returns when stock wealth is a larger share of total wealth. This variation can be used to test asset‐pricing models in which the price of consumption risk varies. After accounting for variations in this price, the relation between expected excess stock returns and the conditional covariance is negative.     

The information content of aggregate profitability

Recently, there has been significant interest in the information content of aggregate accounting profitability. I collect evidence on whether aggregate profitability captures information about changes in the cost of capital as predicted by classical investment theory. Consistent with these predictions, I find that the stock market return is negatively related to future accounting profitability for several years into the future. I provide evidence that this relation is most likely due to a positive association between changes in expected returns which exert a negative impact on stock returns and future profitability. These findings indicate that aggregate accounting profitability reflects significant economic content related to the cost of capital. This study is the first to link changes in accounting profitability to the market cost of capital under an investment-based mechanism.     

Accounting regulations,enforcement, and stock price crash risk: Global evidence in the banking industry

This study uses the banking industry as a unique testing setting to examine the impact of accounting and enforcement regulations on stock price crash risk. We find that stocks are less likely to crash in countries with stricter accounting regulations and enforcement standards. More importantly, we provide evidence that the impact of accounting regulations is more significant in countries with stricter enforcement standards, suggesting that enforcement mechanisms and accounting regulations are complementary. We find that the main channels for accounting regulations and enforcement standards to affect stock price crash risk are regulations that strengthen information disclosure and improve the effects of direct supervision and external auditors. Our findings are robust after we include more control variables, employ regional regulatory developments as instrumental variables, conduct change regressions, use alternative measures of enforcement, and estimate in various subsamples. Our study has policy implications for how to design accounting regulations and enforcement mechanisms in a more effective manner.     

Insider Trading and Corporate Information Transparency

Our study examines the relation between insider trading and corporate information transparency. We find a negative relation between firms’ information transparency and the economic significance of insider trading, including the amount of insider purchase and sale and the profitability of insider transactions. We also find a negative relation between information transparency and stock price reaction to news of insider trading, which suggests that increases in information transparency preempt insiders’ private information. Our study provides evidence consistent with firms’ transparency-enhancing activities decreasing information asymmetry between insiders and investors by revealing insiders’ private information to investors in a timely manner.     

会计信息可比性与劳动收入份额北大核心

利用2006-2019年沪深A股数据,本文考察了会计信息可比性对企业劳动收入份额的影响。研究发现,会计信息可比性的增强显著提高了企业的劳动收入份额,表明会计信息质量的提高有助于员工更好地分享企业的发展成果。进一步研究结果表明,(1)降低资本成本及增大自主研发强度是会计信息可比性提高企业劳动收入份额的两大作用路径;(2)会计信息可比性的增强主要提高了普通雇员的劳动收入份额,对高管劳动收入份额的影响并不显著;(3)会计信息可比性对劳动收入份额的影响存在一定异质性,当企业自身融资约束程度较高、信息透明度较低,或可比公司的会计盈余质量较强时,会计信息可比性与劳动收入份额的正相关关系更强;(4)会计信息可比性通过提高劳动收入份额,提升了企业的价值创造能力。     

Earnings management and stock price crashes post U.S. cross-delistings

We examine whether cross-delisted firms from the major U.S. stock exchanges experience an increase in crash risk associated with earnings management. Consistent with our prediction, we find that earnings management has a greater positive impact on stock price crash risk post cross-delisting when compared to a control group of firms that remain cross-listed. More importantly, we find that this effect is more pronounced for cross-delisted firms from countries with weaker investor protection, poorer quality of their information environment and less conservative accounting practices. Our findings are robust to the potential endogenous nature of the cross-delisting decision, alternative measures of stock price crash risk and information asymmetry. We interpret our results as evidence of a “reverse bonding effect” following cross-delistings from U.S. stock exchanges.     

Earnings, cashflows and returns: Functional relations and the impact of firm size

The relation between stock returns, earnings and cashflows is of importance because it directly addresses the issue of whether accounting data provide value relevant information. The empirical evidence to date, however, has documented low explanatory power for earnings and inconclusive incremental information content for cashflows. This research re-evaluates the incremental information content debate using Australian data. Our research is motivated by: recent innovations in research design, including the specification of nonlinear functional relations between accounting variables and prices, and the fact that differences in firm size characteristics may influence the relative information content of the accounting variables. We observe that: (i) a nonlinear functional relation provides greater explanatory power for both earnings and cashflows;(ii) the results are consistent with more transitory earnings components for smaller firms; and (iii) contrary to received theory, cashflows add greater incremental explanatory power for large firms.     

政治关系、制度环境与股票价格的信息含量——来自我国民营上市公司股价同步性的经验证据

以2004～2007年间所有的民营A股上市公司为样本,本文对政治关系与股票价格的信息含量(以公司的股价同步性衡量)之间的关系进行了实证检验。检验结果发现,与没有政治关系的公司相比,有政治关系的公司的股票价格同步性显著较高。并且,政治关系与股票价格同步性之间的正相关关系只在市场化程度较低、政府干预较多以及法制水平较差的地区存在。进一步区分政治关系的类型发现,代表委员类政治关系显著提高了公司的股价同步性,而政府官员类政治关系对股价同步性的影响则不显著。     

Zero-leverage policy and stock price crash risk: Evidence from Korea

This study examines the difference in stock price crash risk between zero-leverage and non-zero-leverage firms. We find that zero-leverage firms have a significantly higher future stock price crash risk than non-zero-leverage firms. Next, we find that the positive relation between zero-leverage policy and future stock price crash risk is more pronounced when firms have higher controlling shareholders' ownership and foreign ownership. We also find that the positive relation is more pronounced for firms with low cash holdings than for those with high cash holdings. Further, we find that the positive relation is stronger for dividend-paying firms than non-dividend-paying firms. Our results are robust to alternative estimation specifications and endogeneity concerns. Overall, our findings shed light on the extent to which extreme corporate financial policy has an impact on future stock price crash risk. Our empirical evidence also provides meaningful implications for how stakeholders (especially investors) predict stock price crash risk in the context of extremely conservative capital structure.     

Asset Liquidity and Stock Liquidity: International Evidence

This study examines the relationship between asset liquidity and stock liquidity across 47 countries. In support of the valuation uncertainty hypothesis, we find that firms with greater asset liquidity on average have higher stock liquidity. More importantly, our study shows that asset liquidity plays a more significant role in resolving valuation uncertainty in countries with poor information environment. For example, we find that the asset–stock liquidity relationship is stronger in countries with poor accounting standards. We further find evidence that after the adoption of IFRS, the improved accounting information environment results in a weaker asset–stock liquidity relation, but only in countries with a strong legal regime. Finally, our study shows that the positive asset–stock liquidity relationship may be attributed to transparency and/or liquidity reasons.     

The Credibility of Voluntary Disclosure and Insider Stock Transactions

We examine stock price reaction to voluntary disclosure of innovation strategy by high‐tech firms and its relation with insider stock transactions before the disclosure. We find that, despite the qualitative and subjective nature of strategy‐related disclosure, there is positive stock price reaction to the disclosure. The evidence suggests that investors view the disclosure as credible good news. We also find that the disclosure is associated with more positive stock price reaction when it is preceded by insider purchase transactions. This evidence is consistent with insider purchase enhancing the credibility of the disclosure. The credibility‐enhancing effect is found to be stronger for firms with higher degrees of information asymmetry (younger firms, firms with lower analyst following, loss firms, and firms with higher research and development (R&D) intensity). Our evidence also indicates that predisclosure insider purchase is associated with greater future abnormal returns, suggesting that managers are privy to good news shortly before the disclosure.     

Short interest and stock price crash risk

Using a large sample of U.S. public firms, we find robust evidence that short interest is positively related to one-year ahead stock price crash risk. The evidence is consistent with the view that short sellers are able to detect bad news hoarding by managers. Additional findings show that the positive relation between short interest and future crash risk is more salient for firms with weak governance mechanisms, excessive risk-taking behavior, and high information asymmetry between managers and shareholders. Empirical support is provided showing that the relation between short interest and crash risk is driven by bad news hoarding.     

Operating cash flow opacity and stock price crash risk

We examine the relation between operating cash flow (OCF) opacity and stock price crash risk. We find that OCF opacity is positively associated with future stock price crash risk after controlling for accruals opacity and other determinants known to influence crash risk. This finding suggests that OCF opacity facilitates bad news hoarding and enables managerial resource diversion, which in turn increases crash risk. We also find that the positive relation between OCF opacity and crash risk is more pronounced when external monitoring is weak, information asymmetry is high, OCF importance is low, and cost of accruals management is high. Overall, our evidence highlights the severe consequence of OCF opacity in that it boosts crash risk; our study should alert the researchers, investors, and regulators to pay more attention to OCF management.