IPO限价发行与新股二级市场价格泡沫——论股票市场“弹簧效应”

本文通过对比2009年7月1日至2014年6月30日IPO市场化定价发行阶段与2014年7月1日至2018年6月30日IPO限价发行阶段共1950个IPO样本,发现IPO限价发行对于新股在二级市场股价表现具有“弹簧效应”:即抑制股票一级市场发行价格会造成新股在二级市场价格短期内超涨,限价发行新股的二级市场定价显著高于市场化定价发行新股的二级市场定价。限价发行引起的过高二级市场定价最终导致股票长期回报率低下。另外,创业板公司“弹簧效应”显著强于主板公司。这些实证结果都可以被本文提出的一级市场价格压抑造成二级市场非理性投资者上涨预期一致、盲目追涨的理论模型所解释。本文的研究指出抑制股票一级市场定价虽然形式上可以解决新股发行价过高问题,但是却造成二级市场更大的价格扭曲。这一发现为进一步完善我国IPO发行定价机制提供了依据。     

新股发行定价的聚类分析方法研究

新股定价问题一直是国际金融界公认的最具迷惑性的难题之一。针对我国证券市场的特点 ,对现行国内外各种新股定价模型和理论进行了研究。在此基础上 ,将多元分析方法的聚类分析应用于新股定价中 ,并通过实证研究表明这种方法是一种比较实用的、客观有效的新股定价方法 ,该方法可以有效地解决新股抑价现象 ,并对我国新股发行定价的改革将产生重要的指导意义。     

承销费用、政府定价管制与 IPO 抑价--来自中国首次公开发行公司的经验证据

选择2001年11月1日至2012年12月31日的中国A股IPO公司为研究样本,分析承销费用与IPO抑价之间的关系及其在政府定价管制程度不同情况下对承销费用与IPO抑价关系的影响。结果显示,承销费用与IPO抑价呈正相关关系;而政府定价管制程度的提高会削弱承销费用与IPO抑价之间的正相关关系,甚至会使其转向负相关关系。     

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。     

盈余操控方式对创业板上市公司IPO后业绩的影响

通过对创业板上市公司从应计盈余管理和真实盈余管理两个视角比较不同盈余操控方式对IPO后企业业绩的影响。实证分析结果表明,创业板公司IPO前后同时实施应计项目操控和真实活动操控两种盈余操控行为。其中真实盈余管理是IPO后企业业绩下滑的深层次原因,且不同盈余操控方式对IPO后3年业绩影响具有时间差异。     

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.     

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.     

论新股发行体制二次改革带来的影响

新股发行体制改革第二阶段工作已于11月1日正式实施,本文主要从二次改革对市场可能带来的利弊出发进行分析,并展望IPO制度未来的发展趋势。总的来说此次新股发行体制改革仅仅只是一个开端,我们的市场只有通过不断的尝试和检验才能变得更加完善。     

Efficiency in IPO Issuance Processes?

Is the online auction an efficient mechanism for pricing initial public offerings (IPOs)? Its intent was to minimize first day price surges in IPOs, which represented “money left on the table” for issuers. Evidence from Google's IPO suggests that the online auction process may not have minimized the first day price surge, since 82 percent of the IPOs issued in 2004 using the traditional process experienced less of an increase. Furthermore, a comparison of auction IPOs with traditional IPOs issued in the same year and in the same threedigit SIC code suggests that 44 percent of the auction IPOs have greater first day price surges than their traditional counterparts. A broader comparison of the pricing behavior of auction IPOs with traditional IPOs presents a mixed picture and suggests that the size of underwriter may be an important factor. The mispricing that occurs in auctions may be due to an informational asymmetry on the part of small investors. This informational gap could arise because small investors lack access to the information sources that institutional investors have or because companies are not required to provide detailed information in the online process, inasmuch as they don't undergo the rigorous scrutiny of investment banks in the traditional bookbuilding process. This informational gap may be alleviated by the SEC reforms of the “quiet period” and by the issuer providing more detailed information on the uses of the funds.     

我国新股弱势问题实证分析

IPO(首次公开发行)作为我国优质企业进入资本市场直接融资的主要途径,是我国证券市场的新鲜血液。本文通过对2002年至2003年间135家IPO公司的实证研究,验证了我国新股弱势的结论,并对造成这一问题的若干因素进行了分析。