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。     

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?     

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.     

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     

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.     

Information infrastructure: Who builds broadband networks?

This paper examines the essential difference between the U.S. and Japan, when one considers information infrastructure. There are seven perception gaps between the U.S. and Japan concerning Information Infrastructure policies. These gaps must be understood in order to compare the countries' governmental policies in this area. In looking at the present circumstances, the essential question to answer concerns who is to build, own and operate the network(s) of the infrastructure. Liberalization is certain to be a central factor in the ongoing telecommunications debates. Now that customers have had a taste of the liberalized market-place, the movement toward more open markets will be difficult to stop. When considering options, it is necessary to pay close attention to standardized network access and the increasingly important role software plays. These issues are causing us to take a new approach to the traditional role played by regulators. They also force a closer look at the appropriate structure of utility companies. This paper addresses the above issues in hopes of stimulating dialog on the new telecommunications infrastructure paradigm.     

海岛地区产业演替及资源基础分析--以舟山群岛为例

改革开放以来,舟山市产业构成发生了显著变化,其经济发展过程可以划分为三个阶段。1992年前,是以产业结构渔业占绝对地位的单一结构阶段;1993—1998年,以旅游业为主的第三产业快速发展阶段;上世纪末以来,又进入了新一轮的经济发展时期,即工业产值比重快速增加阶段。根据海岛的自然资源基础和特点,在新世纪的经济发展过程中,舟山市应定位为生态型的港口旅游城市。以港口及临港工业为主导,以海岛旅游和海洋经济为特色,大力发展第二产业和第三产业。海岛地区的主导产业应体现海岛资源优势及区位优势,以集群性环保型产业为主。同时由于海岛地区淡水资源缺乏,主导产业也应着重选择低耗水型产业。     

风险视角下企业治理结构和研发创新——基于委托代理模型的研究

本文基于委托代理模型,从风险的视角研究企业治理结构对研发创新能力的影响。本文构建了一个包含创新活动的委托代理模型进行理论分析,利用动态DEA 模型测算创新能力,并使用2015-2018年我国上市制造业企业数据进行实证检验。实证部分检验了理论结论:委托代理问题不利于企业提升研发创新能力,且客观风险和主观风险厌恶会加剧该负面影响。基于此,本文认为上市企业应根据企业自身研发活动特点有针对性地改善企业治理结构,提出了适当延长代理人任期、推动股权激励计划、提升代理人的风险承担能力等建议。     

生物群落结构原型的仿生学模拟

模拟生命系统管理规律的科学即管理仿生学,是知识时代仿生学研究的新领域与前沿.基于模拟生物群落结构规律的研究目的,采用仿生学模拟的研究方法,以生物群落结构为原型,建立了仿生群落结构模型.结论为:垂直结构、水平结构、时间结构与交错区结构是支持生物群落生命活动的结构规律,以该规律为原型,推理建立了仿生分层结构、仿生优化结构、仿生动态结构与仿生相邻结构,四种仿生结构分别侧重于管理资源的分层管理、局部优化管理、动态过程管理、相邻关系管理,该模型为建立类似生物群落的人造管理系统即仿生群落管理系统提供了仿生结构模型.可以预测,该模型具有广泛的应用价值,能够推动管理仿生学的发展.