基于波动效应与价格发现的期指仿真交易研究

沪深300股指期货仿真交易的推出，对我国现货市场的影响如何以及这种影响是否有利于现货效率的改进。首次采用修正的GARCH模型和向量误差修正模型（VEC）将股指期货推出后现货市场波动性的变化和股指期货与现货市场的价格发现功能结合起来进行对比研究。结果表明，期指仿真交易的推出对于现货市场效率的改进确实存在正面的影响。其引入在短期内加大了现货市场的波动，但这一波动正是市场信息流动加速的反映，因而提高了市场信息的传递效率。同时期货价格领先于现货价格，存在由期货市场到现货市场长期的单向因果关系，说明期货价格具有引导现货价格向均衡方向调整的功能，从而在经验上支持了股指期货市场的开放政策。     

沪深300指数期货对A股市场波动性影响的传导机制分析

利用同一样本空间下的多元波动率模型进行实证检验的结果显示,股指期货的推出加剧了现货市场的波动,其中原因不仅源自现货市场的基本面因素,还源自股指期货的高波动性明显冲击了现货市场,从而加剧了现货市场的波动性.而这其中的传导机理在于:在当前我国股指期货市场个人投资者占绝对比例的现实格局下,股指期货市场存在的正反馈交易效应、价格引导机制以及期现套利对冲不充分等三方面因素的叠加,最终将影响现货市场的波动,进而冲击现货市场的稳定运行.     

投资者情绪对股指期现货市场关系影响研究

国内尚缺乏有关投资者情绪对期现货市场间相关性及价格发现关系的研究,基于情绪因素对股指期货市场效率展开分析,已经成为推动资本市场发展的重要研究内容。通过DCCGARCH、分位数回归和分位信息份额模型(Quantile-IS)定量分析投资者情绪对我国股指期现货市场间动态相关性和价格发现功能的影响。结果表明我国股指期货市场整体上存在一定的价格发现功能,投资者情绪能够降低期现货市场信息传递效率。分位信息份额模型和动态Granger因果检验结果表明,在市场平稳状态下投资者情绪能够抑制期货市场价格发现功能,但在市场极端行情下具有增强市场价格发现效率的作用。研究结论解读了投资者情绪对我国期现货市场关系影响取决于市场行情走向,也从投资者情绪视角为监管思路调整提供实证依据,以全面增强股指期货市场整体运行效率。     

股指期货与股票现货市场竞争关系研究——来自中国的经验证据

本文利用模拟生态学中种群间动态关系的Lotka-Volterra模型,对沪深300股指期货同股票现货市场在交易规模方面的竞争关系进行实证分析。研究结果表明,沪深300股指期货推出初期,股指期货市场与股票现货市场在交易规模方面存在竞争性的交易转移效应;随着股指期货市场相关规则的不断健全和完善,股指期货市场与股票现货市场在交易规模方面由竞争关系转变为共存关系,出现交易引资效应。同时,研究还发现,股指期货市场与股票现货市场之间关系由竞争性转变为共存性的重要原因是股指期货市场监管力度的加大,股指期货市场投资者结构的优化,以及股指期货市场期现套利交易的盛行。     

股指期货与现货市场的风险关联分析

股指期货的上市是我国资本市场改革的标志性事件,由于期货合约产品设计和上市初期交易主体中机构投资者比例不足等原因,股指期货基础性的对冲作用未充分发挥,但由于股指期货与现货市场的关联性及其做空机制的特性,使得股指期货与股票现货在日内交易中波动关联性,以及在短期内对现货市场走势预期的导向作用不容忽视。     

中国股指期货与股票市场信息传递研究

本文分析了我国股指期货与股票现货市场之间的信息传播关系,研究结果显示:对于知情交易者而言,期货市场上的收益大于现货市场,因此知情交易者率先考虑在期货市场进行交易,期货市场会先吸收最新的信息,再传递到现货市场上;股指期货市场与股票现货市场之间存在双向的价格引导关系,且股指期货市场对股票现货市场的引导力度均大于股票现货市场对股指期货市场的引导力度;股指期货市场与股票现货市场之间的风险传递是相互的,差距的力度不具有差异性.     

我国股指期货价格发现功能的实证研究

一般来说,股指期货引入后,其价格发现功能会使得市场定价更有效率,套利者投资于沪深300成分股的时候可以利用股指期货来进行套利,会使得现货与期货价格差维持在交易成本和货币的时间成本附近,套期保值者可以利用股指期货来做套期保值。投机者会利用股指期货的杠杆特性来投机。在这三方面综合作用的情况下,沪深300股指期货的推出到底使得价格波动是增大还是减小却有不同意见。目前,股指期货已经上市两年半里,在这两年半中,没有发生股指期货价格与现货价格发生巨大价差,也没有引起类似于国债327这种严重违规交易的案例。看起来沪深300股指期货正在有序运行着。股指期货的引入是否使得我们的市场更加有效率了呢,本文将对沪深股指期货对于我国股市运行的波动性影响进行探究。     

股指期货推出对A股市场的影响分析

随着我国股指期货的推出,双边市场结构将得到完善,对冲交易成为现实,将深层次改变A股市场交易.股指期货推出之后,期货市场、现货市场、货币市场之间的联动将会使市场变化更加复杂;对冲交易将使得投资者的操作方式更加灵活多变,对风险的控制手段更加丰富,期货市场的套期保值功能将有助于降低现货市场的风险.     

市场效率:股指期权、股指期货与股指的关系——来自香港恒生指数市场的证据

使用2007年7月3日到2009年3月31日期间日度数据,从定价效率和信息效率两个方面讨论并检验了香港恒指衍生品市场的市场效率。研究发现:(1)信息效率检验显示恒指现货、恒指期货市场为弱式有效,恒指期权市场没有呈现出弱式有效的市场特征;(2)定价效率检验显示香港恒指期货、期权市场都是具有定价效率的衍生品市场;(3)恒生指数和其衍生品市场之间的领先——滞后关系符合成本交易假设,恒指期权收益领先恒指期货收益,恒指期货收益领先恒指现货收益,恒指期货和恒指期权市场在价格发现功能中占据主导地位;(4)恒指期权市场的存在,完善了套利机制,增强了现货市场和期货市场的流动性。这个结论为中国持续连贯地发展股指衍生品市场提供了坚实有力的证据,因此笔者建议在沪深300股指期货平稳运行之后,中国应该适时推出同一标的指数的股指期权产品,形成股指期货和股指期权市场并行发展的股指衍生品市场格局。     

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。     

对国外股指期货市场发展的思考

本文从股指期货的定义和发展过程入手,依次对美国、日本、新加坡股指期货市场的发展历程进行了介绍。通过比较,分析它们在各自发展过程中取得的成就,总结其经验教训,并结合中国国情,提出中国在发展股指期货市场中应注意的问题。     

The Lead‐Lag Relationship Between Cash and Stock Index Futures in a New Market

This paper investigates the lead‐lag relationship in daily returns and volatilities between price movements of the FTSE/ATHEX‐20 and FTSE/ATHEX Mid‐40 stock index futures and the underlying cash indices in the relatively new futures market of Greece. Empirical results show that there is a bi‐directional relationship between cash and futures prices. However, futures lead the cash index returns, by responding more rapidly to economic events than stock prices. This speed is much higher in the more liquid FTSE/ATHEX‐20 market. Moreover, results indicate that futures volatilities spill information over to the corresponding cash market volatilities in both investigated futures markets, but volatilities in the cash markets have no effect on the volatilities of futures markets. Overall, it seems that new market information is disseminated faster in the futures market compared to the stock market. This implies that the futures markets can be used as price discovery vehicles, providing further evidence that derivatives markets contribute to completing and stabilising capital markets in Greece. A further finding of this study is that futures volume and disequilibrium effects between cash and futures prices are important variables in the explanation of volatilities in cash and futures markets.     

我国股指期货与股票交易的关联性分析

股指期货上市交易后对股票现货市场波动性的影响取决于届时股票现货市场的估值水平,其交易过程和结果也将改变市场投资主体结构及参与程度,形成交易主体多元化的格局。同时,我国股票现货市场对股指期货的交易也存在着反约束.     

股指期权对股指期货的促进作用:来自韩国的证据

本文结合解析韩国KOSPI200期权对于KOSPI200期货市场的影响,论证股指期权市场对股指期货市场在提高流动性和培育机构投资者方面的显著作用。借鉴韩国股指衍生品市场发展经验,笔者认为在沪深300股指期货平稳运行之后,要选择时机及时推出股指期权,这样可以保证良好的流动性。为此,应当加快制定股指衍生品市场体系的发展战略。     

股票、股指期货跨市场信息监管的国际比较及借鉴

股指期货推出后,股票市场和股指期货市场跨市场信息监管成为金融监管机构亟待解决的问题。本文以金融市场微观结构理论和信息经济学为基础,结合股指期货和股票市场的风险关联特性,研究信息在股指期货市场和股票市场传导的一般规律,并分析了跨市场信息监管在信息传导过程中的作用;以此为基础,分析比较了海外证券市场跨市场信息监管具体运作体系,并结合我国证券市场特殊性提出我国股票市场和股指期货市场跨市场信息监管框架、流程和以跨市场信息监管为核心的监管手段。     

沪深300股指期货与现货市场的非线性信息溢出与价格发现功能研究

采用线性与非线性Granger因果检验、协整检验和VECM模型,研究了沪深300股指期货和现货市场的线性与非线性信息溢出,并检验了期货市场的价格发现功能发挥情况。研究结果显示:线性信息溢出方面,沪深300股指期货市场对现货市场只有线性均值信息溢出,现货市场对期货市场只存在线性方差信息溢出;非线性信息溢出方面,两个市场之间不存在非线性均值信息溢出,不过二者之间存在显著的非线性方差信息溢出;沪深300股指期、现货市场之间存在着长期均衡的关系,不过不同于成熟市场中期货市场在价格发现方面居于主导地位的结论,我国股指现货市场在价格发现方面占主导地位,而期货市场处于从属地位。     

Extreme Correlation of Stock and Bond Futures Markets: International Evidence

This study explores time‐varying extreme correlation of stock–bond futures markets in three major developed countries. In the United States and the United Kingdom, there is evidence of positive extreme stock–bond correlation when both futures markets are extremely bullish or bearish. In Germany, stock–bond futures extreme correlation is negative, suggesting the most diversification potentials of bond futures when German stock index futures market plunges. Macroeconomic news, the business cycle, and the stock market uncertainty all significantly affect the median stock–bond futures correlation. However, only the stock market uncertainty still significantly affects the extreme stock–bond futures correlation when the stock market is extremely bearish.     

Concentration of the UK Stock Market

Abstract:  During 1999 and 2000 a large number of articles appeared in the financial press which argued that the concentration of the FTSE 100 had increased. Many of these reports suggested that stock market volatility in the UK had risen, because the concentration of its stock markets had increased. This study undertakes a comprehensive measurement of stock market concentration using the FTSE 100 index. We find that during 1999, 2000 and 2001 stock market concentration was noticeably higher than at any other time since the index was introduced. When we measure the volatility of the FTSE 100 index we do not find an association between concentration and its volatility. When we examine the variances and covariance's of the FTSE 100 constituents we find that security volatility appears to be positively related to concentration changes but concentration and the size of security covariances appear to be negatively related. We simulate the variance of four versions of the FTSE 100 index; in each version of the index the weighting structure reflects either an equally weighted index, or one with levels of low, intermediate or high concentration. We find that moving from low to high concentration has very little impact on the volatility of the index. To complete the study we estimate the minimum variance portfolio for the FTSE 100, we then compare concentration levels of this index to those formed on the basis of market weighting. We find that realised FTSE index weightings are higher than for the minimum variance index.     

Price Discovery in Chinese Stock Index Futures Market: New Evidence Based on Intraday Data

Using high-frequency data, this study investigates price discovery in the newly established stock index (CSI300) futures market in China. Our empirical results reveal new evidence that the CSI300 index futures market play a dominant role in the price discovery process about one year after its inception and new information is disseminated more rapidly in the stock index futures market than the stock market. This is different from findings in the previous literature. Our results also imply that the index futures market has evolved and can be used as a price discovery vehicle. Thus the CSI300 stock index futures market plays an important role in the capital markets in China.