基于高频数据的股指期货与现货市场波动溢出和信息传导研究

本文利用沪深300指数和当月股指期货连续合约的高频数据,采用非参数方法估计日度股票指数和股指期货的整体波动、连续性波动和跳跃,发现两个市场波动成分存在双向的格兰杰因果关系,但是期货市场的跳跃并不会影响后续股票市场的跳跃。此外,已实现相关系数在股指期货上市初期表现出了较大的变动,整体表现出了较强的联动趋势。最后,日内高频价格之间存在稳定的协整关系,两个市场存在双向的信息传导,股指期货的价格发现功能得到发挥。     

股指期货与现货指数的波动溢出效应

以沪深300现货指数与沪深300股指期货指数的月度数据作为研究对象,基于HP滤波分析、Granger因果性检验、向量自回归模型等方法研究了股指期货与股票现货市场间的波动溢出效应,结果表明沪深300股指期货风险与沪深300指数之间不仅存在长期的均衡关系,同时两市场具有双向的波动溢出效应,股指期货市场的波动溢出强于股票现货市场的波动溢出。     

股指期货基差风险研究

股指期货市场的套期保值实际上是针对基差的套期保值,我国现阶段对基差的分析主要集中在套期保值的有效性上,本文对股指期货基差风险进行研究,分析了股指期货市场基差波动的影响因素。     

股指期货市场的风险管理:国际比较与启示

股指期货作为20世纪80年代发展起来的新型金融衍生工具,已经成为发达金融市场的重要组成部分.本文在分析股指期货风险特性的基础上,介绍了世界各国股指期货市场的主要监管模式、风险管理特征和相关制度,以此为鉴提出了我国加强股指期货市场风险监管的建议.     

我国股指期货风险分析及控制研究

一、引言股指期货是以股票市场的股票价格指数为买卖对象的期货,是股票市场和期货市场相结合的产物,是一种间接买卖股票的经济活动。股指期货是世界上交易量和流动性最好的金融衍生产品和证券市场最为有效的风险管理工具之一。股权分置改革即将全部完成,为开启股指期货扫清了障碍,股指期货的推出不仅为市场提供了一个交易工具,同时也拓宽了我国证券市场投资的渠道,从更深层次的意义上讲,股指期货的推出将为我国经济的发展带来新的历史机遇,将对资本市场和期货市场的发展产生深远的影响。由于股指期货交易是保证金交易,具有以小博大的杠杆效应,因而能够给交易者带来数倍、数十倍以上的收益,同时也可能给交易者带来巨大的损失。股指期货交易的止损机制使股指期货的价格有自我强化波动的特征,从而扩大了价格波动的风险。此外,股指期货的“到期日效应”容易导致多空双方故意拉抬、打压现货市场价格,使现货市场价格产生剧烈波动,使投资者不易判断其走势,加大了投资的风险。特别是我国,由于证券市场发展不成熟,还会存在一些特有的风险,如果不能采取有效措施加以控制,将会对证券市场产生严重的影响。因此,研究我国股指期货蕴含的风险,提出有效的防范风险的措施,对于我国证券市场的健康稳...     

我国股票指数期货市场的风险规避策略分析

股指期货的推出将对我国金融业的发展产生深远的影响。虽然股指期货并非新生,但在中国却是个新鲜事物,并将成为2007年中国期货市场上最吸引眼球的交易品种。股指期货作为一种风险规避和管理工具,其本身也意味着高风险。本文在介绍股指期货风险的特征、成因基础上,分析了风险规避策略。     

大陆与台湾股指期货价格发现功能比较研究

本文利用日内15分钟交易数据,对大陆与台湾股指期货的价格发现功能进行了比较,发现沪深300股指期货和现货间存在双向价格引导关系,但在信息传导效率上,期货领先现货,对台湾市场而言,仅存在期货对现货的单向引导关系;期货市场在长期价格发现功能中占主导地位,但台指期货的主导作用要强于沪深300股指期货。文章从投资者结构、合约设计、交易制度等影响因素分析了两岸股指期货价格发现功能的差异,并提出改善大陆股指期货价格发现功能的建议。     

我国股指期货加大了现货市场的波动性吗?——基于ARMA-GARCH模型的实证检验

引入虚拟变量、市场因素代理变量和股指期货同期交易数据建立ARMA-GARCH模型进行实证检验,结果表明股指期货交易管控政策对现货市场波动性影响不显著,股指期现货间波动传递机制尚未完全形成,股指期货加大现货市场波动性的观点不成立。我国应继续推进股指期货市场发展,完善制度体系,强化专业培养,加强过程监管,鼓励风险可控的适度创新,引导股指期货在资本市场发挥更大作用。     

浅析无风险利率对股指期货合约价格波动抑制

在发达的股票现货市场,对股票价格的预期可以引起股指期货合约价格的变化。但是通过对股指期货持仓成本模型的分析,我们发现无风险利率在理论上对股指期货合约的价格也会施以影响。从对由持仓成本模型结合无风险套利原理推导出的股指期货合约价格模型分析,指出无风险利率与股指期货合约价格的关系,借助于对无风险利率的控制从而减弱因股票现货市场价格波动而使期货市场股指期货合约价格的波动效应。     

交易量和波动率动态因果关系研究——基于沪深300股指期货高频数据的实证分析

利用我国沪深300股指期货的高频数据对沪深300股指期货合约交易量和波动率的动态因果关系进行研究.经验证据表明,我国沪深300股指期货市场具有显著的“杠杆效应”,同时股指期货合约的非预期交易量是信息量的有效代理变量,可以很好地解释波动率,二者没有显著的Granger因果关系,因此我国股指期货市场支持了分布混合假说(MDH).其政策含义在于,我国股指期货市场是有一定“市场效率”的,同时该结论对于市场的投资者和套利者都有一定的现实意义.     

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.     

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.     

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…     

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.     

浅议金融机构的举证责任

金融纠纷案件是当事人以存单或进账单、对账单、存款合同、保险单、票据、证券等凭证为主要证据向人民法院提出诉讼的案件,对于不同种类金融纠纷的当事人的举证责任,我国现行的金融法律、法规及司法解释有不同的规定。由于金融机构的特殊法律地位,发生金融纠纷时存在有关当事人将最后偿付风险转移给金融机构承担的主观故意,在客观上会使金融机构难以提供相应的证据来对抗不法债权人的诉讼请求,而导致金融机构败诉。为此,对金融诉讼案件中金融机构的举证责任加以研究具有重要的实践意义。     

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.     

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.