新股上市首日爆炒成因分析及对策研究

深、沪市场存在新股上市首日爆炒的情况,其主要弊端在于扭曲了市场化定价机制,加大了二级市场运行风险和投资风险。影响新股上市首日爆炒的原因较为复杂,主要有制度层面、市场层面、上市公司层面和投资者层面等因素。新股上市爆炒不是简单的发行制度、交易制度改革或交易监管就能解决的问题,防控新股上市爆炒需要齐抓共管。     

中国股市股票首次公开发行首日超额收益研究

文章对深沪两市 2 0 0 0～ 2 0 0 3年间上市的 31 1只新股为样本的短期价格研究发现 :中国内地A股市场存在着远高于其他国家股票市场的新股首日超额收益 ,但幅度远小于已有的研究结果。发行年份、发行方式和行业对新股首日收益的影响是不一致的 ,但在各个横截面都表现明显。新股上市后首日过高的换手率表明中国新股市场上充斥着短期寻利者 (flippers)和过度投机。新股首日收益同发行间隔、上市后一交易月股价收益标准差显著正相关 ,但同流通股比例的正相关关系并不显著 ,同公司规模、新股发行价显著负相关。     

中国股市股票首次公开发行首日起额收益研究

文章对深沪两市2000～2003年间上市的311只新股为样本的短期价格研究发现中国内地A股市场存在着远高于其他国家股票市场的新股首日超额收益,但幅度远小于已有的研究结果.发行年份、发行方式和行业对新股首日收益的影响是不一致的,但在各个横截面都表现明显.新股上市后首日过高的换手率表明中国新股市场上充斥着短期寻利者(flippers)和过度投机.新股首日收益同发行间隔、上市后一交易月股价收益标准差显著正相关,但同流通股比例的正相关关系并不显著,同公司规模、新股发行价显著负相关.     

战略投资者参与条件下新股定价过程实证研究

文章分析了影响新股上市抑价率的各种因素，建立了抑价率与各种影响因素的数学模型，通过数学模型分析，说明抑价率与战略投资者参与之间的关系。发现：新股的上市价格不比无战略投资者参与时高，反而要低，这说明战略投资者参与新股的配售有利于稳定新股上市的价格。     

中国股市新股发行的市场冲击研究

通过建立投资者选择模型,我们对于中国新股发行冲击市场的投资者行为提供了模型化的解释。利用2000～2007年中国A股市场上的新股数据,我们发现了“新股冲击”假说的某些支持性证据．以及新股发行影响二级市场的主要途径,但这种冲击性影响明显被高估了。我们还发现,不参与二级市场的风险厌恶投资者比参与二级市场的风险中性投资者有更强的愿望参与新股申购。减少新股发行负面影响的措施应包括适当提高新股发行价或者平抑新股上市交易价格,扩大投资者参与范围。降低新股发行实际收益率．以减少一、二级市场间的大规模资金流动。     

我国新股过度发行的不良效应及调控对策

2009年至今,我国股市一直不稳定,投融资功能受到很大影响,已引起社会各界的普遍关注。2009²012年,我国新股表现为过度发行,其发行量和筹集资金数额都较高,且"破发"现象较为严重。新股过度发行给A股市场、股民和企业都带来较大影响。我国应纠正新股上市越多越好的观念,科学合理地规划和安排新股上市;严格审查企业上市申请,谨防不良企业上市"圈钱";切实保护投资者利益;培育稳定运行的市场机制,减少市场剧烈波动;加大市场监管力度,严惩各种违法违规行为。     

新股又到追捧时

<正>新股高开是必然,低开是偶然。这一A股市场的"传统"成为投资者们追捧新股的原动力。随着新股发行制度改革的实施和启动,"炒新"再度成为市场上的热门话题。7月10日,IPO重启后的两单新股桂林三金和万马电缆上市。虽然监管部门对新股上市首日的价格波动做出了明确的限制性规范,同时相当     

上市公司定向增发新股融资与可转换债券融资比较研究

本文以2005年5月1日至2007年12月31日中国证券市场发生的218个定向增发新股或可转换债券事件为样本,运用标准的事件研究法实证检验了中国上市公司定向增发新股与可转换债券的短期市场绩效的差异性。研究结果发现,在控制其他因素的条件下,定向增发新股的短期市场绩效显著好于可转换债券。这说明,监管当局在制定相关融资政策时,应当充分考虑证券市场投资者的意愿,为上市公司进行定向增发新股创造一个好的政策环境。     

放宽炒新限制 进步意义有限

正沪深两地证交所于日前发布了修改后的新股上市首日交易规则。新规则将首日盘中临时停牌改为一次,且不超过30分钟,也取消了上市初期单一投资者全天买入不得超过该新股首日实际上市流通量1‰的限制。2014年1月40多只新股密集上市的时候,大量新股因爆炒而遭遇二次临停,导致全天交易仅有1分钟。这种尴尬情况将不会再出现。这次修改虽体现了交易所对市场的尊重,但由于仍然保留了对新股上市首日交易的一些限制措施,     

我国承销商利用分析师报告托市了吗?

学术界对于我国IPO市场是否存在承销商托市行为一直存在争议。本文通过搜集新股上市一年之内的分析师报告数据,系统考察了我国承销商利用分析师报告进行托市的行为特征,以及投资者对于承销商分析师具有托市性质报告的市场反应。结果发现:(1)承销商会利用乐观、但偏颇的分析师报告为市场表现不佳的新股进行托市,但这一现象在新股上市90天后消失;(2)声誉机制在新股解禁期后才能有效约束承销商利用分析师报告托市的利益冲突行为;(3)市场投资者总体上能够识别承销商的托市意图,并对承销商分析师报告的系统偏误进行自我调整。本文的研究不仅为我国承销商是否存在托市行为提供了新的直接性经验证据,而且有助于市场各方洞悉分析师报告背后的利益冲突,同时也为监管部门出台相关的规范政策提供了新的决策参考。     

Pleasure and belief in Hume's Decision Process

Abstract

The purpose of this paper is to introduce explicitly pleasure and belief in what aims at being a Humean theory of decision, like the one developed in Diaye and Lapidus (2005a). Although we support the idea that Hume was in some way a hedonist – evidently different from Bentham's or Jevons' way – we lay emphasis less on continuity than on the specific kind of hedonism encountered in Hume's writings (chiefly the Treatise, the second Enquiry, the Dissertation, or some of his Essays). Such hedonism clearly contrasts to its standard modern inheritance, expressed by the relation between preferences and utility.

The reason for such a difference with the usual approach lies in the mental process that Hume puts to the fore in order to explain the way pleasure determines desires and volition. Whereas pleasure is primarily, in Hume's words, an impression of sensation, it takes place in the birth of passions as reflecting an idea of pleasure, whose “force and vivacity” is precisely a “belief”, transferred to the direct passions of desire or volition that come immediately before action. As a result, from a Humean point of view, “belief” deals with decision under risk or uncertainty, as well as with intertemporal decision and indiscrimination problems.

The latter are explored within a formal framework, and it is shown that the relation of pleasure is transformed by belief into a non-empty class of relations of desire, among which at least one is a preorder.     

John Stuart Mill's Theory Of Justice

John Stuart Mill has traditionally been portrayed as self-contradictory and failing to construct a unified social theory. Recent scholarship, however, has challenged this view, finding Mill's work to be creatively synthetic in bridging the antinomies inherent in liberal democratic thought. This revisionist interpretation of Mill is advanced by an understanding of his theory of justice and its role in shaping his policy positions on issues such as welfare, education, voting rights, property rights, taxation, government intervention, and the future of capitalism.     

A Rich Vein for “Reality Mining”北大核心CSSCISSCI

Arik Hesseldahl In the aftermath of the September 11 attacks, U.S. officials quickly turned their attention to other potential targets, including California's Golden Gate Bridge. What would happen if terrorists took down the bridge between San Francisco and Marin County? How much of the region would be affected and for how long?     

Globalization,Neoliberalism and the attack on social security

Neoliberal political movements advocate privatization of public pension systems. Globalization imposes pressure on nations to conform to neoliberal policy views with respect to the design and structure of social insurance, including public pension systems. The paper begins with an investigation of the economic, ethical and ideological dimensions of the privatization debates in the U.S.; it argues that privatization advocates may be largely moved by ideology, since the other reasons advanced appear weak or unfounded. The second part discusses the history of Social Security, the purposes for its creation, and some of its economic effects. Differences between public and private pension systems are considered. A brief international comparison of some aspects of public pension system finance and benefit structures is presented. The final section considers the ethical, macroeconomic and distributional implications of privatization, prefunding and payroll tax funding, and argues for a pay as you go system financed with income taxes. In order to promote equity, economic security, community, and social cohesion, public pension systems should be universal in coverage. In order to reduce the inequality, income insecurity, and aged poverty generated by market economies, public pension systems ought to be progressive: benefit/contribution ratios should be inversely proportional to income, and progressive income taxes should finance the system. To promote economic growth, the systems should be financed on a pay-as-you-go basis, and should not be prefunded except for an emergency reserve. The fiscal policy recommendations partially depend upon the theory developed by Abba Lerner in the 1940s, and recently advanced by Wynne Godley and Randy Wray: Lerner's “principle of functional finance.”     

Perspective on the Economic Evolution of the European Union States Under the Impact of the Pandemic and Financial-Economic Crisis

The European Union,which is at the beginning of its term of office for all Member States in the European Parliament,the European Commission,its governing body a...     

中国养活自己能力的长期预测:技术和政策分析

中国拥有世界五分之一强的人口 ,收入又在迅速增长。因此 ,国际上很自然地会考虑或推测她在今后的几十年是否有能力养活自己。中国的人口预计将从 2 0 0 0年的 1 2 8亿增长到 2 0 2 0年的 1 4 6亿 ,和 2 0 3 0年的 1 4 9亿。与此同时 ,人均收入的增长将导致对家畜和鱼类产品更大的需求 ,因而对饲料的需求也将有很大的增长     

John Stuart Mill's Theories of Wealth and Income Distribution

Although he was much influenced by David Ricardo when he wrote the classical part of his Principles , John Stuart Mill was not a Ricardian when he penned his theories of wealth and distribution. They are based on a triple foundation. First, a belief that economics is a moral discipline. Second a theory of custom-driven human behavior. Third, an empirically formed conviction that the institutions of state, education and business cooperate to structure the distribution of income. On the basis of these presuppositions, Mill formulated 1) an institutional theory of the formation of human and non-human wealth and 2) an even more institutional theory of distribution demonstrating how the aforementioned institutions malignantly skew the distribution of income to the advantage of the propertied classes and to the extreme disadvantage of the working class. As a social economist, Mill recommended institutional reforms designed to eradicate the poverty of the working class.     

Forecasting the price of gold

This article seeks to evaluate the appropriateness of a variety of existing forecasting techniques (17 methods) at providing accurate and statistically significant forecasts for gold price. We report the results from the nine most competitive techniques. Special consideration is given to the ability of these techniques to provide forecasts which outperforms the random walk (RW) as we noticed that certain multivariate models (which included prices of silver, platinum, palladium and rhodium, besides gold) were also unable to outperform the RW in this case. Interestingly, the results show that none of the forecasting techniques are able to outperform the RW at horizons of 1 and 9 steps ahead, and on average, the exponential smoothing model is seen providing the best forecasts in terms of the lowest root mean squared error over the 24-month forecasting horizons. Moreover, we find that the univariate models used in this article are able to outperform the Bayesian autoregression and Bayesian vector autoregressive models, with exponential smoothing reporting statistically significant results in comparison with the former models, and classical autoregressive and the vector autoregressive models in most cases.     

Toward a Phylogenetic Reconstruction of Organizational Life

Synopsis Classification is an important activity that facilitates theory development in many academic disciplines. Scholars in fields such as organizational science, management science and economics and have long recognized that classification offers an approach for ordering and understanding the diversity of organizational taxa (groups of one or more similar organizational entities). However, even the most prominent organizational classifications have limited utility, as they tend to be shaped by a specific research bias, inadequate units of analysis and a standard neoclassical economic view that does not naturally accommodate the disequilibrium dynamics of modern competition. The result is a relatively large number of individual and unconnected organizational classifications, which tend to ignore the processes of change responsible for organizational diversity. Collectively they fail to provide any sort of universal system for ordering, compiling and presenting knowledge on organizational diversity. This paper has two purposes. First, it reviews the general status of the major theoretical approaches to biological and organizational classification and compares the methods and resulting classifications derived from each approach. Definitions of key terms and a discussion on the three principal schools of biological classification (evolutionary systematics, phenetics and cladistics) are included in this review. Second, this paper aims to encourage critical thinking and debate about the use of the cladistic classification approach for inferring and representing the historical relationships underpinning organizational diversity. This involves examining the feasibility of applying the logic of common ancestry to populations of organizations. Consequently, this paper is exploratory and preparatory in style, with illustrations and assertions concerning the study and classification of organizational diversity.