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股指期货功能的发挥建立在股指期货与现货市场价格形成有效互动、引导关系的基础之上。本文通过相关性检验和基差序列单位根检验得出沪深300股指期货与现货市场实现了有效互动;通过Granger因果关系检验、协整检验、向量误差修正模型和方差分解结果发现,前一期现货价格引导期货价格,而股指期货价格在价格发现中贡献度较低,在偏离均衡的动态调整过程中对现货价格的引导作用不明显,其价格发现功能未得到充分发挥。最后,根据所得结论给出提高我国股指期货市场信息效率的建议。 相似文献
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牛津 《金融经济(湖南)》2013,(12):117-119
2010年4月16日,股指期货在国内正式上市交易,至今为止,我国股指期货上市已有三年的时间,股指期货对股票市场波动性的影响如何,股指期货与现货的价格引导作用怎样?本文借助TARCH模型以及VAR脉冲响应模型,探究了沪深300股指期货对股市波动性的影响,并且对于股指期货与现货互相之间的价格引导作用进行了研究分析,结果表明:股指期货的上市减弱了股市对于信息的非对称反应程度;股指期货价格的波动对于现货价格的影响大于现货价格波动对于股指期货价格的影响。 相似文献
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股指期货与股票市场定价效率问题 总被引:4,自引:0,他引:4
股指期货的推出,大大提高了股票市场的定价效率.在无套利均衡市场上,股指期货价格由相关股票组合的价格及持有成本决定,股票现货价格成为影响股指期货价格的主要因素.但在动态非均衡市场上,股指期货的价格形成集中并传递大量信息,这些信息通过股指期货市场与股票市场间的套利机制及时传递到股票市场,增加相关股票组合价格的信息含量,引导和发现现货价格,从而提高股市的定价效率. 相似文献
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在沪深300股指期货推出两年以后,为了验证期货市场的价格发现功能,本文利用VAR模型对沪深300股指期货和现货价格的每分钟收益率序列实际数据进行检验.实证检验结果显示期货价格变化对未来现货价格变化有显著影响,持续时间可达5分钟以上,而现货价格对期货价格变化没有显著影响.因此,沪深300指数期货市场已经发挥了较强的价格发现功能.同时,我们发现对股指期货和现货市场而言,VAR模型具有较强的稳定性,在利用历史数据预测未来指数价格变化中有较强的实用价值. 相似文献
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本文利用协整检验、向量误差修正模型以及脉冲响应和方差分解方法,对沪深300股指期货对现货市场的价格发现功能进行了实证研究.结果表明,现货价格在长期内引导沪深300股指期货价格,沪深300股指期货市场在短期和长期内对现货市场的价格发现功能都大于现货市场的价格发现功能,但是这种作用并不是很明显(期货市场对期货市场和现货市场价格的形成大约贡献65%~70%). 相似文献
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股指期货异地上市不仅会对本土股票市场和衍生品市场产生多方面的影响,而且涉及到本土市场金融定价权等一系列问题。理论上期货价格与现货价格应存在长期关系,并且期货价格具有价格发现功能,先导于现货价格。通过实证研究发现,我国大陆股票市场先导于A50股指期货市场,虽然期货价格和现货价格存在显著的长期均衡关系,但A50股指期货价格发现功能并不显著;其作为一种金融投资产品,没有股指期货的功能,但它对大陆股市的影响仍需引起重视。 相似文献
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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. 相似文献
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本文利用2015年中国股市大幅下跌期间,对股指期货严格限制交易政策这一独特事件前后的高频数据,研究限制交易政策对股指期货与股票市场价格引导关系的影响。利用I-S模型和分位数回归方法的实证结果表明:限制交易政策实施前,股指期货对股票市场的价格影响更强,尤其表现在价格急剧下跌时期;限制交易政策显著增加了期货市场交易成本,从而降低了期货市场的信息份额,削弱了其对股票市场的价格影响,并且改变了期货价格对现货价格“助跌强于助涨”的影响模式,增强了股指期货在价格上涨时对股票市场的影响。研究结果一方面直接量化了期货交易成本变动对其价格发现功能的负面影响,另一方面也从价格引导关系的视角提供了股市危机时期股指期货限制交易政策监管效果的实证证据。 相似文献
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我国国债期货市场能否发挥稳定现货市场功能,金融周期风险是否会改变国债期货市场对现货市场波动的影响,是投资者实施风险管理和监管部门构建市场稳定机制的重要依据。本文通过信息传递机制和交易者行为两个维度探析国债期货市场发挥稳定功能的微观机理,分析金融周期风险对衍生工具稳定功能的影响,解析引入国债期货合约能否缓解金融周期波动对国债市场冲击,同时关注我国国债期货交易机制改进与现券波动关系。研究发现:(1)我国国债期货市场已实现抑制现货市场波动的功能,金融周期风险会引发现货价格波动,国债期货市场能够降低金融周期的波动冲击;(2)改善现货市场深度和套保交易是国债期货市场发挥稳定功能的微观路径,国债期货市场增进国债预期交易量流动性、减弱非预期交易量干扰,金融周期低波动区间套保交易稳定作用受到抑制;(3)国债期货投机交易和波动溢出效应助长现货市场波动,正负期现基差对国债波动影响具有非对称特征。 相似文献
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我国股指期货与现货市场信息传递与波动溢出关系研究 总被引:4,自引:0,他引:4
股指期货与现货市场关系是监管者关注的重点问题。本文采用我国股指期货上市以来1分钟级高频数据,应用向量误差修正模型、方差分解、多元T-GARCH等,考察期现两市信息传递、波动溢出效应的影响。实证结果表明,尽管股指期货和股票市场之间短期内存在相互引导关系,但股票市场价格变动更多来自于自身影响,起主导作用,而且两市长期均衡收敛也是以股票市场占主导地位;两市存在显著的双向波动溢出,期货市场的波动溢出效应强于股票市场的波动溢出效应;两市场存在明显的非对称效应,期货市场对坏消息更为敏感,而现货市场对好消息更为敏感。 相似文献
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Price discovery and volatility spillovers in index futures markets: Some evidence from Mexico 总被引:1,自引:0,他引:1
This paper investigates the hypotheses that the recently established Mexican stock index futures market effectively serves the price discovery function, and that the introduction of futures trading has provoked volatility in the underlying spot market. We test both hypotheses simultaneously with daily data from Mexico in the context of a modified EGARCH model that also incorporates possible cointegration between the futures and spot markets. The evidence supports both hypotheses, suggesting that the futures market in Mexico is a useful price discovery vehicle, although futures trading has also been a source of instability for the spot market. Several managerial implications are derived and discussed. 相似文献
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The concerns regarding regulations of futures markets and their destabilizing ability are unresolved in both developed and developing markets. Following stringent regulations of single stock futures (SSFs) for resumption episode after financial crises, this study addresses this concern and investigates the destabilizing impact of SSFs on the underlying stocks in an emerging economy using data of companies listed in the Karachi Stock Exchange between 1999 and 2008. Specifically, the study explores whether SSFs have caused a simultaneous increase in the volatility and operational efficiency of their underlying spot market counterparts. The results reported in the study show that the introduction of SSFs has no significant impact on market efficiency and volatility of SSFs underlying stocks and non-SSFs stocks. The results affirm that SSFs have, at least, no destabilizing impact on the underlying stocks. 相似文献
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In this paper, we examine the nature of transmission of stock returns and volatility between the U.S. and Japanese stock markets
using futures prices on the S&P 500 and Nikkei 225 stock indexes. We use stock index futures prices to mitigate the stale
quote problem found in the spot index prices and to obtain more robust results. By employing a two-step GARCH approach, we
find that there are unidirectional contemporaneous return and volatility spillovers from the U.S. to Japan. Furthermore, the
U.S.'s influence on Japan in returns is approximately four times as large as the other way around. Finally, our results show
no significant lagged spillover effects in both returns and volatility from the Osaka market to the Chicago market, while
a significant lagged volatility spillover is observed from the U.S. to Japan.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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This paper uses three methods to estimate the price volatility of two stock market indexes and their corresponding futures contracts. The classic variance measure of volatility is supplemented with two newer measures, derived from the Garman-Klass and Ball-Torous estimators. A likelihood ratio test is used to compare the classic variance measure of price volatilities of two stock market indexes and their corresponding futures contracts during the bull market of the 1980s. The stock market volatilities of the Standard & Poor's 500 (S&P 500) and New York Stock Exchange (NYSE) indexes were found to be significantly lower than their respective futures price volatilities. Since information may flow faster in the futures markets than in the corresponding stock market, our results support Ross's information-volatility hypothesis. It was also noted that the NYSE spot volatility was lower than the S&P 500 spot volatility. If the rate of information flow and firm size are positively related, then the lower NYSE spot volatility is explained by the size effect. The futures price volatilities for the two indexes were insignificantly different from each other. With stock index spot-futures price correlations approaching unity, one implication of our results for index futures activity is that smaller positions in futures contracts may suffice to achieve hedging or arbitrage goals. 相似文献
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股指期货推出对中国股票市场波动性的影响研究——基于沪深300股指期货高频数据的实证分析 总被引:1,自引:0,他引:1
本文利用沪深300股指期货的高频数据,研究了股指期货推出对中国股票市场波动性的影响。结果表明:在股指期货合约交割日,总体上不存在到期日效应;在中长期,股指期货推出则确实增加了现货市场的波动,但随着时间的推移,这种影响在减小。另外,股指期货对现货市场波动起到引导作用,其冲击持续的时间更长、强度更大。本文政策含义在于,随着时间的推移,股指期货开始平稳有效运行,对现货市场起到重要引导和价格发现的作用,但由于股指期货的高投机性,加强对其监管仍然十分必要。 相似文献
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This article focuses on the information effects between the futures market and its spot market. Intraday data are used to investigate the lead-lag relationships between the returns and trading activity of Taiwan stock index futures and the spot returns. We focus on the transmission direction and the sources of information. Consistent with most previous studies, our results show that other than the contemporaneous relationship predicted by carry-cost theory and efficient market theory, futures returns significantly lead spot returns, which implies that informed trades may occur in the futures market. Using private transaction information, net open buy, as a proxy for futures trading activity and distinguishing different types of futures traders, we find that foreign institutional traders are the major source of informed trades because their trading has predictive power for future movements in both spot and futures prices. Traders in other categories are information laggards. 相似文献