IPO制度改革、盈余管理与IPO定价效率

以1993~2015年我国A股IPO公司为样本，检验了我国资本市场IPO制度的渐进式改革对IPO定价效率的作用，并进一步研究了盈余管理在两者作用过程中的中介作用。研究结果发现，除额度管理到指标管理阶段改革没有对IPO定价效率产生显著影响外，其他各阶段改革均有效提高了短窗口期的IPO定价效率，并且IPO公司的盈余管理在这一过程中起到了显著的中介作用。此外，进一步研究还发现IPO制度改革降低了中长期窗口的IPO定价效率，并且IPO制度改革在不同市场化程度的地区和牛熊市期间对IPO定价效率的作用并不相同。研究结论为IPO注册制改革过程中加强对IPO公司盈余管理的监管提供了参考依据。     

Are venture capitalist-backed IPOs more innovative? Evidence from an emerging market

This study examines whether venture capital (VC)-backed IPOs are more innovative than otherwise equivalent non-VC-backed IPOs. Using manually collected R&D records from annual reports and patent data from the Chinese State Intellectual Property Office (CSIPO) from 2007 to 2012, we find that VC-backed IPOs have higher R&D expenditures and more patents granted in the three years after IPOs. More specifically, they have more invention, application, and design patents in post-IPO. We use a two-stage instrumental variable, propensity score matching, difference-in-differences approach to mitigate selection biases and find our results to be consistent with our hypothesis. We conclude that VCs can positively influence IPO firms to increase R&D expenditures and innovative output levels in China. In addition, we document that the government ownership adversely affects innovation of VC-backed firms. Policy implications are discussed.     

Signaling in science-based IPOs: The combined effect of affiliation with prestigious universities,underwriters, and venture capitalists

This paper studies the combined effect of affiliation with prestigious universities, underwriters, and venture capitalists on the valuation of biotech ventures at IPO and their post-IPO performance. We argue that affiliation to a prestigious university provides the affiliated firm with a quality signal in the scientific domain. The pure quality signaling effect of the affiliation is isolated from the substantive benefits it provides by performing a difference-in-difference approach based on the scientific reputation of scientists in firms' upper echelons. The signal is stronger the weaker is the scientific reputation of scientists of the focal IPO-firm and is additive to those provided by prestigious venture capitalists and underwriters. Results for a sample of 254 European biotech ventures that went through an IPO between 1990 and 2009 confirm our predictions.     

IPO first‐day returns: Skewness preference,investor sentiment and uncertainty underlying factors

In this paper, we investigate the initial public offering (IPO) first-day returns. Our focus is to examine the irrational component of the agent behavior towards IPO lotteries. Based on 234 French IPOs performed between 2002 and 2012, we find that IPOs with high initial returns have higher idiosyncratic skewness, turnover and momentum. This finding provides empirical evidence for investors' preference for stocks with lottery-like features and investor sentiment. In addition, we show that the skewness preference and the investor sentiment effect are stronger during periods of favorable market conditions. Our results are robust to the integration of uncertainty underlying factors.     

Noise from online discussion forums: Evidence from IPOs in China

In this study, we use initial public offerings (IPOs) in China to investigate how online stock forums influence information asymmetry and IPO valuation. The empirical analysis isolates the underpricing and overvaluation components of initial returns. The number of forum comments, postings, and readings are positively associated with initial returns and the degree of underpricing, implying that forums create noise that exacerbates information asymmetry during IPOs. This effect is amplified by the quiet period regulation, which drives investors to rely on online discussion forums to obtain information. Through sentiment analyses of forum posts and media coverage, we find that the negative effect of online forums is more prominent when bad news prevails. We clarify the role of online stock forums in IPO pricing and information asymmetry by separating underpricing from overvaluation in initial returns.     

I am therefore I own: Implications of organization-based identity for employee stock ownership

Most research on employee stock plan participation investigates the effects of such forms of ownership on employee attitudes, leaving our understanding of the individual differences that contribute to employee ownership largely unknown. Drawing from the consumer behavior literature, our study explores the effect of organization-based identity on the decision to participate in an employee stock purchase plan. The study was conducted in a newly public firm where we examine the effect of organization-based identity on the purchase decision in two time periods. The first point in time was the initial public offering (IPO), when the employee has little information on how the firm's stock will perform in the market. The second point in time was the first quarter following the IPO, when employees have market data to help them with decision-making. Results indicate that, as predicted, organization-based identity is associated with participation in an employee stock purchase plan, at both points in time, above and beyond the influence of several economic and psychological predictors reported in prior studies.     

异常审计费用、审计质量与IPO定价——基于A股市场的分析

以A股市场2006—2012年IPO公司为研究对象，探讨异常审计费用与审计质量的相关性及其在IPO定价中的作用。结果发现：对全样本，异常审计费用与IPO抑价水平显著负相关，与可操纵性应计利润的绝对值和股票上市后的长期市场表现不相关；当考虑异常审计费用的方向时，正的异常审计费用与IPO抑价水平、可操纵性应计利润的绝对值显著负相关，与股票上市后的长期市场表现显著正相关，而负的异常审计费用与三者的相关性均不显著。这表明作为会计师事务所努力程度的体现，正的异常审计费用不会损害审计质量，相反在一定程度上能提升审计质量。因此，监管部门应更多地关注审计收费不足所存在的风险。     

The price of rapid exit in venture capital-backed IPOs

This paper proposes an explanation for two empirical puzzles surrounding initial public offerings (IPOs). Firstly, it is well documented that IPO underpricing increases during “hot issue” periods. Secondly, venture capital (VC) backed IPOs are less underpriced than non-venture capital backed IPOs during normal periods of activity, but the reverse is true during hot issue periods: VC backed IPOs are more underpriced than non-VC backed ones. This paper shows that when IPOs are driven by the initial investor’s desire to exit from an existing investment in order to finance a new venture, both the value of the new venture and the value of the existing firm to be sold in the IPO drive the investor’s choice of price and fraction of shares sold in the IPO. When this is the case, the availability of attractive new ventures increases equilibrium underpricing, which is what we observe during hot issue periods. Moreover, I show that underpricing is affected by the severity of the moral hazard problem between an investor and the firm’s manager. In the presence of a moral hazard problem the degree of equilibrium underpricing is more sensitive to changes in the value of the new venture. This can explain why venture capitalists, who often finance firms with more severe moral hazard problems, underprice IPOs less in normal periods, but underprice more strongly during hot issue periods. Further empirical implications relating the fraction of shares sold and the degree of underpricing are presented.      

累计投标询价机制下的IPOs定价及实证分析

通过回顾累计投标询价机制下IPOs定价的相关文献,并对IPOs发行过程中发行公司与机构投资者、中小投资者三方在利益最大化之间进行博弈,求解发行公司的IPOs策略及价格确定过程,在此基础上,进行实证分析。结果表明:我国在累计投标询价机制下发行股票的发行价格除了反映了发行公司股票的内在价值外,还反应了二级市场实际供求关系等外部综合影响因素。     

The determinants of market-wide issue cycles for initial public offerings

This paper identifies the determinants of market-wide issue cycles for initial public offerings (IPOs) using an autoregressive conditional count model. We consider whether IPO volume is related to business conditions, investor sentiment, and time variation in adverse selection costs caused by asymmetric information between managers and investors. We provide evidence indicating that time variation in business conditions and investor sentiment are important determinants of monthly issue activity. By contrast, time variation in adverse selection costs does not significantly affect IPO volume.