市场流动性有限与IPO抑价现象

本文从流动性有限的角度出发,结合行为金融的研究方法,对不同流动性水平下的IPO抑价过程进行了分析,得出市场成交意愿、投机气氛、个股风险因子以及强制持仓限制对IPO抑价会产生关键影响,并通过实证对上述观点进行了检验,证明了流动性相关变量对IPO抑价水平具有显著的解释效力、因此本文提出IPO抑价是由于不同投资音承担风险差异化的结果,因而在解决这一问题时应主要从加强市场基础建设的角度出发。     

论准备海外上市公司的内部控制建设

本文主要探讨准备在海外上市的中国企业要加入到国际市场的竞争中,应该如何按照国际上通行的内部控制标准来建立内部控制体系。以COSO报告作为内控标准来分析我国现阶段企业内控管理的基本状况,并进一步就国内企业应如何按照国际上通行的内部控制标准来建立完善而有效的内部控制体系提出了一些应对措施和建议。     

基于BP神经网络的创业板上市公司IPO定价研究

在总结我国IPO定价演变过程的基础上,对创业板上市企业的IPO定价的理论基础进行了研究,明确新股上市时必须审时度势,并提出了“势”和“势价”的概念。通过分析BP神经网络的原理和算法,得出基于BP神经网络算法的创业板IPO定价方式可以有效地解决这种IPO定价需涉及的非线性、非平衡和动态的数学问题,并搭建了该算法的应用框架,确定了输入层的参数和节点数,结合具体训练细节,按照BP神经网络训练和IPO定价流程图编程运行,可以算出有效的创业板上市IPO定价。     

创业板市场IPO融资成本的影响因素研究

创业板频繁"破发",使其IPO备受关注。本文参考Ritter J.R.融资成本分类方法,以创业板177家公司为样本,从直接和间接融资成本两方面,考察影响创业板IPO成本因素。研究发现:创业板IPO直接成本与公司发行规模、上市前负债率负相关;间接成本与信息不对称程度显著正相关,与公司发行规模、中签率、发行后市盈率负相关。     

首日停牌机制下我国IPO抑价影响因子研究

我国的IPO抑价率远超世界平均水平,造成资本的聚集严重制约了资本市场的有效运行。2014年1月,我国资本市场重启IPO,引入新股上市首日临时停牌机制,这一举措是否可以改善抑价水平及其影响因子？通过使用破板日中价来描述首日停盘机制下抑价水平进行实证分析,发现在这一机制的引导下,发行因素代表的不理性因素对IPO抑价水平影响有所下降,说明我国资本市场的信息水平得到提高,市场对新股的投资变得更为理性。     

An investigation of the attention effects of venture capitalist backing on entrepreneurial firms

In this paper, we predict that venture capital (VC) backed initial public offerings (IPOs) will attract more attention than non-VC-backed IPOs, as VCs offer important signals to investors searching for information about entrepreneurial firms. We use a measure developed by Google (i.e., Trends) to capture the spikes in investors' attention experienced by firms in the time period surrounding their IPOs. Our results demonstrate that firms backed by VCs enjoy a far greater spike in attention than their counterparts. Furthermore, we find that firms with more prominent VCs, a larger number of VCs, and VCs situated at farther geographic distances exhibit significantly greater spikes in investors’ attention during the week of their IPO. Combined, the findings show a clear demarcation between entrepreneurial firms with or without VC backing, they bring to the fore new upshots stemming from the relationship between VCs and entrepreneurial firms, and they raise new potential questions on this relationship and beyond.     

新股询价发行中的价格区间与配售策略

询价制在新股首次公开发行中正变得日益流行和重要.运用机制设计理论建模分析了承销商如何在新股询价发行过程中制定最优的发行底价和折价水平以得到合适的价格区间,并在发生超额认购时对投资者采取最优的配售策略.研究结果表明当价格区间与配售量满足激励约束条件时,可以达到让知情投资者搜集信息并如实报价的均衡,此外.折价及发行底价均与配售额关系密切,通过策略地分配股票,可以有效降低折价水平并保证较高的发行底价,进一步减少融资成本.     

IPO首日初始收益的实证研究

以1997年～2000年间上市的498只新股为样本,研究了在上市首日的初始收益和超额收益率的统计特征,发现在各个横截面都有很高的初始收益和超额收益率,"新股神话"表现明显,而且不同行业对股票的首日收益有不同的影响.同时,首日换手率过高表明我国IPO市场上充斥着短期寻利者,存在过度投机行为.     

Private Ownership versus Institutional Ownership: Exclusion Pricing of Initial Public Offerings

The authors examine the literature with respect to the pricing of initial public offerings and focus upon the relationship of pricing to the structure and conduct of the investment banking industry. Using a data base of all share offerings undertaken in the United States over a two and a half year period, the authors find that there is considerable evidence for the proposition that large, prestigious, and well capitalised investment banks tend to price their share offerings at a higher absolute level than those not meeting such characteristics. Using classical statistical methods, the authors find that the pricing strategy of investment banks is connected to their affiliation with investment funds and unit trusts. The motives for such pricing strategies, the authors argue, lie with the affiliation of investment banks with investment funds, suggesting that the pricing of new share offerings may be a means of excluding retail investors from participating in the strong returns such issues exhibit. The authors raise legal and regulatory implications of their findings in the context of the general consolidation observed within the investment banking industry. This revised version was published online in July 2006 with corrections to the Cover Date.     

投资者情绪如何影响股票定价?——基于IPO公司的实证研究

分析了投资者情绪如何影响股票定价,并以2006年—2011年间917家IPO公司为样本进行实证检验.结果发现:1)市场情绪和个股具体的情绪均显著影响IPO溢价.具体而言,市场情绪较高组比较低组的IPO溢价高36％(63％vs 27％),个股具体情绪较高组比较低组的IPO溢价高24％(56％ vs 32％);2)公司价值不确定性越高,市场情绪对IPO溢价的影响越大,公司投机风险越高,市场情绪对IPO溢价的影响越小;3)IPO溢价较高的公司,其股价在上市后会逐渐反转.