基于半参数LM-ARMAX模型的股价波动成因分析

对股票价格波动的建模分析,一直是经济与金融研究的核心领域,是什么导致了股票价格的波动,也一直是投资主体共同关注的话题。有鉴于此,本文选择沪市1991-2010年所有上市公司的数据,建立了LM-ARMAX模型来实证股票价格波动的决定因素,最后根据模型半参数估计的结果,进行了基于半参数估计的非线性检验和基于Wild Bootstrap的Smirnov检验,结果表明:市账率和成交量是股票价格波动的主要因素,而净资产收益率对股票价格波动的影响不显著。     

国际原油价格对我国新能源行业股票价格的波动溢出效应研究

在大气污染日益严峻的情况下,新能源行业受政府大力支持和投资者青睐。新能源与原油一定程度上互为替代品,理论上国际原油价格必然对我国新能源行业股票价格有显著的波动溢出效应,但有些学者却持反对态度,认为我国股票市场对外还没有完全开放,新能源行业发展又很不成熟,所以该溢出效应很难显著。文章运用VAR- Asymmetric- BEKK模型进行比较研究得出：在未去除我国整体股市行情因素时,国际原油价格波动对我国新能源行业股票价格波动溢出效应不显著;而在去除我国整体股行情因素时,国际原油价格波动对我国新能源行业股票价格波动溢出效应在1%显著性水平下显著。表明存在从国际原油价格向我国新能源行业股票价格的波动溢出效应,只是该溢出效应被我国股市总体行情掩盖了。     

股票市场波动性思考——反身性理论之应用

股票价格波动是由多种因素反复作用决定的,即主要因素和次要因素,主要因素决定了股票价格波动的性质及趋势。主要因素包括基本趋势和主流偏向。主流偏向是市场中存在为数众多的参与者,他们的观点是各不相同的,其中许多偏向相互抵消而剩余的偏向。在股票市场中,股票价格最先受到影响,股票价格的变化又反过来对基本趋势和主流偏向施加影响。本文从影响基本趋势和主流偏向的宏观因素和微观因素,实例分析从2006年至今反身性理论对我国A股市场的运用。     

股票价格波动对中国实体经济影响的传导机制与实证研究——基于1993—2014年中国市场数据

借助1993—2014年的中国市场数据对股票价格的显著变化与实体经济之间的关系问题,从理论到实证角度进行了深入探讨,其中解决的焦点问题主要包括:股票价格波动影响实体经济的主要渠道与传导机制,中国股票价格波动对投资、消费行为和经济增长的实际影响程度以及政策制定者应对股票价格波动做出的反应等。     

股票价格波动对中国实体经济影响的传导机制与实证研究--基于1993-2014年中国市场数据

借助1993—2014年的中国市场数据对股票价格的显著变化与实体经济之间的关系问题,从理论到实证角度进行了深入探讨,其中解决的焦点问题主要包括：股票价格波动影响实体经济的主要渠道与传导机制,中国股票价格波动对投资、消费行为和经济增长的实际影响程度以及政策制定者应对股票价格波动做出的反应等。     

人民币汇率对实体经济的资本市场传导机制——基于VAR模型的实证研究

在有效的金融市场中,信息对称会促进资金的高效运动,并推动市场向更有效的方向运行。随着我国汇率形成机制的改革以及资本账户改革的加快,汇率对货币的传导机制影响日益显著,也会对实体经济产生影响。如何通过合理的政策布局实现汇率改革及资本市场对其影响实体经济的运行效率,值得我们深入研究。实际上,金融作为推动实体经济发展的重要基础,其发展与实体经济增长之间存在着"阈值效应"或更复杂的非线性关系。本文从汇率水平波动影响股票价格的作用机制、股票价格波动影响实体经济的作用机制以及三者之间的联动作用,以及在美国经济增长率及股票价格等外生变量的作用下,运用向量自回归(VAR)模型进行分析,采用脉冲响应分析和方差分解等技术,对人民币汇率通过股票价格渠道对实体经济的影响进行实证研究。实证检验认为,人民币汇率波动在短期内会对股票价格波动产生小幅影响,且其传递的过程存在一定的阻滞;股票价格的波动无论是在长期内还是在短期内都会对实体经济增长率,即产出水平产生显著的影响,对价格水平的影响较弱。因此我们建议通过科学合理的手段逐步完善我国的汇率机制与资本市场的传导机制,以实现其服务于实体经济的基本功能。     

中国政府会有资产负债表危机吗——政府资产负债表的编制与分析

<正>我们的政府究竟有多少家底?总体增加,分化明显。虽然家底整体不断增加,但分化明显,中央政府家底稳健而快速地增厚,地方政府家底较明显地受土地价格波动和债务负担影响。在2002-2012年,中国政府的资产从11.75万亿元增长至58.9万亿元,年均增速17.6%;净资产从7.98万亿元增长至33.45万亿元,年均增速15.6%,同期名义GDP年均增速15.8%、M2增速为18.1%。,2012年年底,中央净资产为16.1万亿元,地方为17.3万     

我国设备机械行业股票价格影响因素的实证分析

股票价格作为国民经济的晴雨表,其波动情况一直是人民关注的焦点。股票价格的变动受众多因素的影响,研究这些因素与股价变动的关系有助于投资者理性认识股市。本文选取设备机械行业整理后符合要求的151家上市公司作为样本,采用多元逐步回归对上市公司的财务指标数据和股票价格进行了实证研究,最后根据实证结果,结合经济意义分析各财务指标对股价的影响,并据此提出一部分投资建议。     

市场速递

上半年中国财政收入近5．7万亿元 财政部公布,上半年全国录得财政收入56875．82亿元人民币,同比增长31．2％。这一规模超过了去年1-8月的财政收入。财政部预计,下半年受经济增长趋缓和实施个人所得税改革等因素影响,全国财政收入增幅将有所回落。     

国际油价波动对页岩气上市公司股价影响研究

利用Granger检验、协整检验及VEC模型估计研究了国际油价波动对我国页岩气上市公司股票价格的影响机制,实证发现:国际油价、汇率、页岩气上市公司股价三者具有长期均衡关系;国际油价的波动是我国页岩气上市公司股价波动的直接影响因素,而汇率的波动是间接影响因素;并且,间接影响因素远大于直接影响因素,这说明国际油价波动通过汇率的变化传导可能性很大,石油的金融属性对页岩气公司股价影响十分显著。     

Almanac of anticipations: The age of affluence—of anticipation—of anxiety—of automation—of discontinuity—of longing—of overkill—of space exploration

With this survey of developments in the futures field since 1945, I.F. Clarke completes his present series for Futures. He makes two major points: that forecasting techniques have become essential tools in the management of change; and that nuclear weapons and ecological problems have added a moral dimension to the study of the future. In the next issue of Futures he will start a new series on the range of future-thinking in the USA, from the expectations of the first settlers to the Star Wars programme.     

基金公司经营融资融券业务的问题审视

融资融券业务正式运营已经开展,为证券市场带来了革命性的改革,作为证券市场的一大主体,基金公司面对融资融券也迎来了新的发展方向和挑战,本文从融资融券业务的运行机制入手,分析了基金公司融资融券的新契机,并对其即将面临的问题进行审视和剖析,进而提出策略建议.     

对基层人民银行科技工作的几点建议

银监会分设后,人民银行将专司货币政策、金融稳定、金融服务三大职能。作为人民银行的分支机构,基层人民银行的工作重心也将从金融监管调整到这三大职能上来。人民银行的科技部门,就要积极运用科技手段,为人民银行履行新的职能发挥“服务、支持、促进、发展”的作用。一、围绕三大职能搭建五大平台经过“六五打基础、七五作准备、八五大发展”几个阶段后,人民银行相继实现了核算电算化、清算网络化和办公信息化。特别是近一两年来,陆续开通了大额支付系统、信贷登记咨询系统、会计四集中系统、金融信息服务网站等系统,人民银行信息化水平又…     

The Usefulness of Measures of Consistency of Discretionary Components of Accruals in the Detection of Earnings Management

Abstract:  Prior research has shown the prevalence of measurement error in models used to estimate aggregate discretionary accruals. In these models, the incremental information content of the various components of accruals is ignored. Limited prior research and data gathered from firms under Securities and Exchange Commission (SEC) litigation indicate that managers use either one or more than one component of accruals simultaneously, in a consistent way to manipulate bottom-line earnings in a given direction. I propose two measures that capture the consistency between the discretionary components of accruals and test their significance in earnings management (EM) detection in firms that have artificially added accrual manipulation and firms that were targeted by the SEC for accrual manipulation. There is evidence that this information is incrementally useful in detecting EM. This finding paves the way for improvements in the discretionary accruals measure by including consistency information from the components of aggregate accruals.     

社会主义所有制形式的改革、完善与共产党执政能力的提高

在中国,所有制形式的调整、改革与完善,先进生产力的发展,党的执政能力建设,是社会主义建设过程中密切结合在一起的三个不同层面的发展关系.应在相互促进和共同提高中促进社会的和谐发展,保证社会主义现代化建设战略目标的顺利实现.     

Summary of Results of Survey of Seminar Attendees

Abstract

The Society of Actuaries undertook a three-phase research project on mortality improvement in the three NAFTA countries: Canada, Mexico, and the U.S. Phase 1 consisted of a literature review of papers on projecting mortality levels in the future and a study of the trend in mortality improvement during this century. Phase 2 consisted of a discussion of different facets of modeling mortality rates at a seminar attended by 79 experts (actuaries, demographers, economists, and medical researchers) representing different countries. The last session of the seminar consisted of the completion of a survey by the attendees to obtain input for Phase 3, which would analyze the impact of mortality improvement on the social security system of each country. This paper summarizes the results of the survey.

The survey results illustrate the difficulty in forecasting mortality levels, because the effects of many factors that could have significant impact on mortality rates are unknown. This suggests the need for dynamic forecasting, which allows for the possibility of random shocks. A majority of the survey respondents believe that stochastic forecasting models, despite their complexity, have significant potential to add value. Respondents also believe that both historical data and cause-specific mortality forecasts are useful as input and also in validating forecasts of the aggregate levels of mortality. The challenge is to develop more sophisticated forecasting models to produce results that are relatively easy to interpret and to communicate these results to the desired audiences, including the public and policymakers.

The survey results suggest that the aggregate effect of lifestyle changes, medical advances, diseases, catastrophe, and physical environmental changes is an increase in life span. However, there is much uncertainty about the future. Respondents expect that beyond the year 2020 the mean annual rate of reduction in mortality for males age 65 and over will average about 0.58% for Canada, 0.76% for Mexico, and 0.67% for the U.S. The results for the female age 65 and over population are 0.64%, 0.83%, and 0.70%, respectively. The age 65 and over population is expected to see larger percentage reductions in mortality than the 0–14 and 15–64 populations. The reductions in male and female mortality will be ultimately the same, and the mortality levels in the three countries will ultimately converge, although differences may persist for decades.     

Separation of Unit of Account from Medium of Exchange

The separation of a unit of account (UoA) from a medium of exchange (MoE) in the commodity–money system is investigated by considering explicitly a seller's choice of UoA in terms of either an MoE or a unit of metal weight. If the likelihood of debasement of an MoE and its rate are high enough, the price is posted in terms of a unit of metal weight rather than an MoE. Interestingly, this MoE–UoA separated equilibrium yields the flexible nominal price, whereas an MoE–UoA integrated equilibrium yields the sticky one. This implies the nominal price rigidity in the fiat‐money system where MoE and UoA are integrated.     

银行软件项目外包管理分析

一、引言随着国民经济的不断发展,银行业务与外部企业的联系越来越密切。银行正逐步成为现代经济活动的中心,作为数据处理核心的银行业务应用也越来越大型化、越来越复杂化,因此许多银行也把软件项目逐步由原来的自主开发转变为与公司合作的方式,或直接外包开发的方式,银行本身的技术人员也逐步由开发转向项目管理。二、项目外包的分类银行项目的外包有以下几种情况:①部分子系统外包,有时由于银行的软件项目太大,单靠银行自身的开发力量基本无法在预定的时间内完成项目,只好把相对独立的部分外包;②直接购买软件公司的成熟产品,有些金融软…     

银行管理信息平台建设发展的思考

一、目前国内银行IT发展现状及面临的问题 银行数据集中工作的完成,标志着银行的业务由电子化建设阶段转入信息化建设阶段.一方面银行数据的集中提供了丰富全面的基础数据,面对日益庞大的数据源,如何将数字转化为对银行有用的信息,并从中发现知识,为银行的经营决策提供支持,是摆在银行IT人员面前的一个亟待解决的问题.另一方面用户对银行信息的需求日益增长,如果银行没有一套完整、实用的信息管理系统,将对业务发展非常不利.南京爱立信公司倒戈花旗银行事件曾经轰动一时,其中一个重要原因就是中国本地银行不能满足爱立信全球总部对南京爱立信公司的要求:每周财务上报和每天贷款限额管理.这一事件为中国商业银行的未来发展敲响了警钟,如果不加快管理信息系统的开发,迅速提升业务管理水平,类似的事件还会接连不断地发生,并最终导致国内商业银行在同国外商业银行的竞争中全面溃败.     

Properties of time-series estimates of degree of leverage measures

Empirical studies suggest that time-series regression estimates of the degrees of operating and financial leverage have a tendency to produce measures less than one. According to ex ante theory, these measures should be greater than one for firms operating above the breakeven point. There have also been suggestions that the biases in these estimates may be attributable to an underlying increase in unit sales. This work presents evidence that these counter-intuitive measures are produced by changes in the firm's operating parameters (unit price, variable cost, fixed cost and interest payments). It further suggests that attempts to control for the underlying change in unit sales substantially increase the volatility of predicted estimates.