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1.
中国资本市场新股IPO折价程度及原因探究   总被引:1,自引:0,他引:1  
本文主要有两个目的:一是全面、细致刻画中国资本市场新股首次公开发行(Initial Public Offering,IPO)的折价程度;二是试图在中国特殊的制度背景下,对新股IPO首日超额收益产生的原因进行解释。为此,本文分别按照年度、行业、上市地点、上市周期对样本进行了分类,计算不同分类下的新股首日超额收益;同时本文认为,新股发行过程中监管部门对发行价格的限制,是导致中国资本市场新股首日超额收益产生的主要原因。  相似文献   

2.
新股发行定价是股票发行的核心环节,定价是否合理将直接影响到股票市场的资源配置.各国的研究表明,新股超额收益是普遍存在的,中国作为新兴市场,超额收益更是惊人.本文选取2009年36家上市公司作为研究对象,以上司公司上市前公司财务指标能否有效地拟合创业板上市首次公开发行发行价来探索我国目前创业板IPO效率高低,并提出相关政策建议和进一步的研究方向.  相似文献   

3.
白天玺 《时代金融》2013,(17):28-29,36
本文首次借助于月相变化这一外生变量来衡量IPO市场中的投资者情绪,就投资者情绪对于IPO首日超额收益的影响进行实证研究。本文实证发现,投资者情绪会影响IPO首日超额收益,不同月相期内上市股票的首日超额收益存在显著差异,满月期内的IPO首日超额收益要低于新月期内的IPO首日超额收益;并且新月期的IPO首日超额收益要高于非新月期的首日超额收益。  相似文献   

4.
IPOs抑价现象所谓首次公开发行股票(Initial Public Offerings,IPOs),也称新股,是企业第一次向公众出售股票,并随即在证券交易所挂牌交易,形成一个流动的交易市场(Ritter,1998)。新股低价上市(Underpricing),即公司的股票常常以过低的价格发行,从而使申购到新股者获得稳定的超额收益,并导致公司上市前的现有股东遭受重大损失的现象。主要表现为新股发行价显著低于其上市首日或初期的收盘价。新股超额收益现象的存在,意味着IPOs市场存在效率损失,并直接表现为上市公司可募集资金的减少。  相似文献   

5.
本文采用百度指数作为衡量投资者关注度的代理变量,以股票收益率、成交量和股价波动率来描述股票市场的表现,考察投资者关注对当期和下一期股市表现的影响。实证研究发现投资者关注的增加对当期股票成交量和股价波动率有显著的正向影响,而这种影响在下一期会明显减弱。对收益率而言,投资者关注对其的影响具有反转性和非对称性。此外,通过买入关注度低增长股票、卖出关注度高增长股票构建零投资套利组合,并运用Carhart四因素模型进行分析,发现零投资套利组合能够获得显著的超额收益。  相似文献   

6.
施荣盛  陈工孟 《上海金融》2012,(7):68-73,118
使用一个直接源自投资者行为的新颖变量——股票论坛的超额发帖量——作为个人投资者关注的代理变量,结合分析师中性评级事件,本文证实了Barber和Odean(2008)的价格压力假说及其理论模型中的定理。发现短期内投资者关注显著地增加了股票的交易量,并对股价产生向上的压力作用;投资收益随着投资者关注的增加而减少,若是采用卖空高关注度股票的投资策略,可以获得27.75%的年超额收益。  相似文献   

7.
李言 《时代金融》2013,(23):210-211,213
本文采用事件研究法,说明在中国市场上存在IPO新股长期弱势表现,并以样本股票IPO之后五年累计超额收益率(CAR)为因变量,合理假设出的影响新股长期表现的因素为自变量,进行多元回归分析,并对其进行了检验。通过模型结果得出结论:公司实力,投资者因素和政策因素是影响IPO长期价格收益表现的主要因素,同时对每个因素及其包含的具体内容进行了解释和分析。  相似文献   

8.
搜索引擎的广泛应用促使互联网成为普通投资者获取信息的重要渠道。百度指数体现关键词被搜索的频率,在一定程度上表征着投资者对信息的关注程度。本文以上证180指数样本股为研究对象,以百度指数用户关注度衡量普通投资者关注度,揭示普通投资者关注对股票流动性及股票收益的影响机制。实证结果表明:在控制其他影响因素后,普通投资者高关注度将伴随高市场流动性,注意力会驱动投资者进行交易;对信息的当期关注会对股票收益产生正向影响,但这一现象将在一段时间后发生反转。  相似文献   

9.
朱媛 《海南金融》2014,(11):14-17
本文基于百度指数,以2012年4月至2013年3月的沪市A股日数据为研究样本,采用组合分析法和面板回归分析法,研究投资者关注度对股票收益的影响。研究结果显示:关注度与同时期股票收益成正比,且关注度高的股票收益明显大于关注度低的股票;关注度在当期对市场造成的正向价格压力将很快发生反转,且关注度的反转效应比较稳定,不会因为时间的改变或大环境的变化而发生变化。  相似文献   

10.
白一欣  金美延 《云南金融》2011,(2X):129-129
本文对2006年9月以来上市的所有股票进行统计,以改革进程分为三期,用上市调整后的个股收益率、上市市盈率、网上网下超额认购比例作为指标,分析了我国股票的高定价、高市值、高超募的"三高"问题,并分析新股上市改革的绩效。本文认为,新股改革并没有从根本上解决这些问题,我国需进一步加快市场化,并最终实现核准制。  相似文献   

11.
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.  相似文献   

12.
Financial economists have intensely debated the performance of IPOs using data after the formation of Nasdaq. This paper sheds light on this controversy by undertaking a large, out‐of‐sample study: We examine the performance for five years after listing of 3,661 U.S. IPOs from 1935 to 1972. The sample displays some underperformance when event‐time buy‐and‐hold abnormal returns are used. The underperformance disappears, however, when cumulative abnormal returns are utilized. A calendar‐time analysis shows that over the entire period, IPOs return as much as the market. The intercepts in CAPM and Fama–French regressions are insignificantly different from zero, suggesting no abnormal performance.  相似文献   

13.
杨丹  林茂 《会计研究》2006,(11):61-68
本文选取1995年1月至2000年12月沪深两市774个A股IPO样本,计算IPO的等权平均、流通市值加权平均和总市值加权平均收益率,并使用不同的市场指数及配比股票组合的收益率加以调整来评价IPO的长期市场表现。经过事件时间和日历时间的实证研究发现:(1)我国IPO在上市后3年内总体上表现出长期强势。(2)IPO长期超常收益率对使用何种参照指标的收益率来调整以及使用何种加权平均方法很敏感。CAR和日历时间研究的结果更明显地表明我国IPO存在长期强势特征,而且使用市值加权平均方法计算的正超常收益率更为显著。(3)Fama-French三因素模型和CAPM模型回归的截距项都表明我国IPO存在正的长期超常收益率。  相似文献   

14.
This paper focuses on the underpricing and the short- and long-run performance of Finnish initial public offerings (IPOs). More specifically, we examine whether there are differences between the performance of value and growth stock IPOs in the Finnish stock market. Our results indicate that growth stock IPOs are slightly more underpriced and have marginally higher short-run returns. However, value stock IPOs are better long-run investments and provide higher returns during the first three years in the aftermarket. We also document that the apparent long-run underperformance of Finnish IPOs can be largely explained by size, book-to-market, and momentum effects.  相似文献   

15.
This study examines the effects of offer characteristics and prospectus disclosures of nonfinancial information on the valuation at the offer and the short-term performance of NZX-listed IPOs over the period 1991–2017. Compared with sector/industry–matched peers, the median IPO is overvalued by 39% at the offer, and more overvalued IPOs do not achieve higher cumulative abnormal returns (CARs) within the first year post-listing. IPOs purchased at the offer yield first-day average abnormal return of 3.4%–3.8% and one-year average CARs of 3.54%–6.21%. Determinants of valuation and short-term performance include the time gap between prospectus registration and offer open, float rate, investment bank reputation, and prospectus disclosures of an employee share ownership plan or a people-focused culture.  相似文献   

16.
We find that initial returns were more favorable for Internet initial public offerings (IPOs) than non–Internet firm IPOs. Since the demise of the Internet sector, the underpricing of Internet–firm IPOs is not significantly different from other IPOs.
Initial returns of Internet firms are positively and significantly related to underwriter prestige and to pre–IPO market conditions. However, initial returns after the demise of the Internet sector are not significantly related to these characteristics.
The aftermarket performance of Internet firms is initially favorable but weakens over time. Firms that experienced higher initial returns during the strong Internet cycle experience weaker aftermarket performance.  相似文献   

17.
We document the phenomenon of under-pricing initial public offerings (IPOs) for 47 Gulf firms that went public between 2001 and 2006. The IPOs had, on average, initial abnormal returns of 290 percent, far exceeding those documented for both developed and emerging markets. In aftermarket performance, we find that these IPOs provide investors with negative abnormal returns over a one-year period, which seems to be consistent with findings in other industrial and emerging markets. The empirical models fail, however, to provide us with a satisfactory explanation using the common independent variables employed in the literature. Nevertheless, it appears that country- and industry-specific characteristics, in addition to the timing of the offers, play a key role in explaining IPO behavior in the region. This paper's empirical findings support the hypothesis that investors are initially over-optimistic about an IPO's performance, but grow more pessimistic over time.  相似文献   

18.
My paper examines the aftermarket performance of private equity‐backed initial public offerings (IPOs) and compares it to the performances of equivalent samples of venture capital‐backed and other nonsponsored issues on the London Stock Exchange during the period 1992‐2005. The evidence suggests marked differences across the three groups in terms of market size, industry classification, first‐day returns, and key operating characteristics at the time of flotation. In fact, private equity‐backed IPOs are larger firms in terms of sales and assets, more profitable, and relatively modest first‐day returns. In the three years following the public listing, they display better operating and market performance when compared to other IPOs and the market as a whole.  相似文献   

19.
We employ a sample of 748 environmentally-friendly (or “green”) firms listed on U.S. stock exchanges to extend studies of the effects of socially responsible investment (SRI) on stock investment returns and the performance of initial public offerings (IPOs) and seasoned equity offerings (SEOs). Our empirical tests document positive and statistically significant excess returns for our environmentally-friendly firms and their IPOs and SEOs, in contrast to our control IPO and SEO samples which underperform. In summary, a “green” equity premium is evident in returns calculated from a variety of benchmarks.  相似文献   

20.
In this paper, we examine the premarket underpricing phenomenon within a group of venture-backed and a group of non-venture-backed initial public offerings (IPOs), using a stochastic frontier approach. Consistent with previous research, we find that venture-backed IPOs are managed by more reputable underwriters and generally are associated with less underwriter compensation. However, unlike other papers in the literature, we find that the initial-day returns of venture-backed IPOs on average, are, higher than the non-venture-backed group. We observe a significantly higher degree of premarket pricing inefficiency in the initial offer price of venture-backed IPOs. Further, our results show that a significant portion of the initial day returns is due to deliberate underpricing in the premarket.  相似文献   

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