股指期货对股票市场波动性影响实证分析

股指期货的推出是我国资本市场深化改革的重要措施。为研究其对股票市场波动性的影响,利用沪深3 0 0指数期货合约交易数据,采用GARCH族模型分析了股指期货推出前后股票市场波动性的变化。分析结果表明期货市场的引入一定程度上扰乱了股票市场的稳定性。股指期货的引入使得股票市场波动性增强,而且这种波动性的增强是由信息流动速度的加快而导致的。     

股指期货推出对股市波动性的影响分析——基于S&P500指数和恒生指数的实证研究

随着沪深300指数期货的推出,关于股指期货推出后对我国股票市场波动性影响的讨论和研究也越来越有实际意义。本文采用比较有代表性的美国S&P500指数和香港恒生指数作为分析对象,分别采用加入虚拟变量的GARCH模型,对比观察S&P500指数和恒生指数推出前后,美国和香港股市整体的波动性是否有明显改变,得出两种股指期货的推出前后均加剧了股市的波动性,但从长期看有助于股市的稳定发展这一结论,从而对我国沪深300股指期货的实践有一定的借鉴作用。     

基于GARCH模型分析股指期货推出对股指波动率的影响

<正>一、引言股指期货的推行对指数波动性影响有不同的三种观点:加剧了波动性,减小了波动性和对股票市场的波动性没有什么影响。第一种观点认为,股票指数期货的推出会加大股票价格的波动,期货交易因其高杠杆性和低信息交易者的投机行为会动摇股票     

期货和期权市场与中国股票市场波动关联研究

股指期货和期权作为衍生产品的一种,对股票市场的波动性有着很大的影响。股指期货和期权对现货市场的波动性既有放大的"杠杆"效果,又有"对冲"的效果。那么股指期货和期权对现货市场的影响实际上是怎么样的仍需要进一步验证。本文从理论和实证分析对上面议题进行了研究。使用了GARCH模型和加入了一个虚拟的哑变量来研究股指期货和期权推出前后股票市场指数的波动率是否有改变。本文得出的结论是,无论是沪深300指数,上证50指数还是中证500指数,在它们相对应的股指期货或期权推出之后的很长时间之内,股票指数的波动性确实是降低的。另外,这个证据也有力地表明,股指期权期货的推出在中国是成功的,对市场是起到"稳定"的作用的。     

沪深300指数期货推出对股票市场波动性影响的分析

股指期货的推出是否对其标的资产波动有显著影响,至今在经济学界和实践部门都有着很大的争议。文章在借鉴了国内现有研究成果的基础上,以我国沪深300现货指数为样本,运用实证分析方法,利用改进的GARCH模型对沪深300指数期货推出对股票市场波动性影响进行了实证研究。研究结果表明：沪深300指数期货上市后的一段时期内,股票现货市场的波动性有一定程度的增加。     

股指期货与现货市场的相关性研究

文章以沪深300股指期货与沪深300指数的交易数据为实证数据,分别建立引入虚拟变量和股指期货交易数据的GARCH模型,从宏观和微观上探究股指期货与现货市场的相关性。结果显示,在宏观上股指期货具有稳定现货市场波动性的作用,在微观上既存在加剧作用,也存在抑制作用。     

沪深300股指期货对股票市场波动性影响分析

以2005年4月8日至2011年4月1日沪深300指数的收盘价作为原始数据,在借鉴国内外学者研究成果的基础上,采用GARCH模型实证研究我国推出沪深300股指期货对股票市场波动性的影响,得出股指期货的推出在一定程度上减小我国股票市场的波动性但这种影响较小等结论。     

泸深300指数期货推出对股票市扬波动性影响的分析

股指期货的推出是否对其标的资产波动有显著影响,至今在经济学界和实践部门都有着很大的争议.文章在借鉴了国内现有研究成果的基础上,以我国沪深300现货指教为样本,运用实证分析方法,利用改进的GARCH模型对沪深300指数期货推出对股票市场波动性影响进行了实证研究.研究结果表明:沪深300指数期货上市后的一段时期内,股票现货...     

股指期货与股票市场波动性关系的研究

本文主要对股指期货与股票市场波动性关系进行了研究，由于在不同国家不同市场上股指期货对股票市场波动性的影响有着不一样的表现，因此我们除了在理论上分析股指期货对股票市场波动的影响外，同时对发达国家和新兴国家股指期货的推出对股票市场波动的影响进行了实证分析比较。以期能够为我国社会主义资本市场的现代化发展提供一些理论上的支持。     

中国股票市场引入股指期货的思考

股指期货是从股市交易中衍生出来的金融衍生品。通过借鉴国外股指期货的成功经验,在中国股票市场引入股指期货,有助于发展和完善中国的股票市场和资本市场,促进金融创新。但股指期货的引入也存在很多问题,我们应该通过加强监管和风险控制,为股指期货的早日推出做好铺垫。     

Stock index futures trading and volatility in international equity markets

This article examines stock market volatility before and after the introduction of equity‐index futures trading in twenty‐five countries, using various models that account for asynchronous data, conditional heteroskedasticity, asymmetric volatility responses, and the joint dynamics of each country's index with the world‐market portfolio. We found that futures trading is related to an increase in conditional volatility in the United States and Japan, but in nearly every other country, we found either no significant effect or a volatility‐dampening effect. This result appears to be robust to model specification and is corroborated by further analysis of the relationship between volatility, trading volume, and open interest in stock futures. An increase in conditional covariance between country‐specific and world returns at the time of futures listing is also documented. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20:661–685, 2000     

Does Index Futures Trading Reduce Volatility in the Chinese Stock Market? A Panel Data Evaluation Approach

This study investigates the effect of introducing index futures trading on the spot price volatility in the Chinese stock market. We employ a recently developed panel data policy evaluation approach (Hsiao, Ching, and Wan, 2011) to construct counterfactuals of the spot market volatility, based mainly on cross‐sectional correlations between the Chinese and international stock markets. This new method does not need to specify a particular regression or a time‐series model for the volatility process around the introduction date of index futures trading, and thus avoids the potential omitted variable bias caused by uncontrolled market factors in the existing literature. Our results provide empirical evidence that the introduction of index futures trading significantly reduces the volatility of the Chinese stock market, which is robust to different model selection criteria and various prediction approaches. © 2012 Wiley Periodicals, Inc. Jrl Fut Mark 33:1167–1190, 2013     

股指期货如何影响股市稳定性?——对全球主要市场的三角度实证检验

以全球多个市场作为实证检验对象,从股市波动率变化、系统风险变化以及股市正反馈交易行为影响三个角度,分析股指期货市场稳定作用的含义,即对股市波动的影响及其作用表现,较为全面地解读股指期货的市场稳定作用。研究发现:三个角度都支持股指期货的市场稳定作用;而抑制正反馈交易的作用最为基础、直接和显著,是股指期货市场稳定作用的更为恰当的判断标准。     

Market microstructure effects on volatility at the TAIFEX

This study examines whether changes in the frequency of market clearing or changes in trading hours on competing exchanges that use different auction systems affect the volatility of futures prices. In particular, this study exploits a natural experiment in the frequency of market clearing of stock index futures contracts traded on the Taiwan Futures Exchange (TAIFEX) to assess whether successive increases in the frequency of market clearing are associated with changes in the volatility of futures prices. The impact of changes in the trading hours on the TAIFEX and on the competing Singapore Exchange (SGX) where a similar Taiwanese stock index futures contract trades under a continuous auction market regime is also examined. The evidence for the impact of an increase in the frequency of market clearing on volatility is mixed. However, the introduction of simultaneous opening times for the TAIFEX (which batches orders at the open) and the SGX (which does not) is associated with a significant reduction in the volatility in SGX Taiwanese stock index futures prices. © 2007 Wiley Periodicals, Inc. Jrl Fut Mark 27:1219–1243, 2007     

Naming Products in China: Local or Foreign Branding

ABSTRACT

This study examines the effect of program trades on the price changes in the Korean stock index futures and spot markets employing intraday return and trading data. Program trades in the Korean stock market create an instant imbalance in market liquidity. However, their impact is very short-lived and limited in an economic sense. Moreover, there is little tendency for market returns to over-react to program trades. An increase in program trades results in higher spot market volatility but does not cause monotonically increasing futures market volatility. Overall, program trades do not destabilize the stock market in Korea despite some positive association between program trades and volatility.     

The stock closing calland futures price behavior: Evidence from the Taiwan futures market

This study examines the behavior of futures prices around stock market close before and after changes to the batching period of the stock closing call. On July 1, 2002, the Taiwan Stock Exchange expanded the length of the batching period roughly 10‐fold, from an average of 30 seconds to 5 minutes. This change presents an opportunity to analyze how a stock closing method affects the behavior of index futures prices. Empirical results indicate that an increase in the length of the batching period affects the return volatility and trading volume of index futures contracts around stock market close. Furthermore, preclose stock returns have a great impact on extended futures returns when the batching period of the stock closing call is long. © 2007 Wiley Periodicals, Inc. Jrl Fut Mark 27:1003–1019, 2007     

我国推出股指期货对股票市场波动性影响的实证研究

本文以2006年11月1日至2010年12月27日的沪深300指数收盘价为原始数据,建立GARCH及EGARCH模型,进行实证研究,探究我国推出股指期货对股票市场波动性的影响。通过对该模型的分析,得出结论:股指期货在我国的推出,一定程度上降低了我国股票现货市场的波动性,对我国股票现货市场的健康发展起到了维稳作用。     

Stock index futures markets: stochastic volatility models and smiles

This study examined whether the inclusion of an appropriate stochastic volatility that captures key distributional and volatility facets of stock index futures is sufficient to explain implied volatility smiles for options on these markets. I considered two variants of stochastic volatility models related to Heston (1993). These models are differentiated by alternative normal or nonnormal processes driving log‐price increments. For four stock index futures markets examined, models including a negatively correlated stochastic volatility process with nonnormal price innovations performed best within the total sample period and for subperiods. Using these optimal stochastic volatility models, I determined the prices of European options. When comparing simulated and actual options prices for these markets, I found substantial differences. This suggests that the inclusion of a stochastic volatility process consistent with the objective process alone is insufficient to explain the existence of smiles. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21:43–78, 2001     

The lead–lag relationship between equities and stock index futures markets around information releases

This paper documents a strengthening in the lead of stock index futures returns over stock index returns around macroeconomic information releases. Some evidence of a strengthening in feedback from the equities market to the futures market and weakening in the lead of the futures market around major stock‐specific information releases is also provided. This is consistent with the hypothesis that investors with better marketwide information prefer to trade in stock index futures while investors with stock‐specific information prefer to trade in underlying stocks. A small weakening in the contemporaneous relationship between stock index futures returns and stock index returns around both types of releases is also documented. This is consistent with disintegration in the relationship between the two markets associated with noise induced volatility. One by‐product of this study is new comparative evidence on the performance of adjustments for infrequent trading of index stocks based on a commonly used ARMA technique versus recalculation of the stock index using quote midpoints. The results suggest that the quote midpoint index performs at least as well as the ARMA adjusted index across the entire sample period, as well as around the different types of information releases. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20:467–487, 2000     

Intraday price discovery and volatility transmission in stock index and stock index futures markets: Evidence from China

Using high‐frequency data, this study investigates intraday price discovery and volatility transmission between the Chinese stock index and the newly established stock index futures markets in China. Although the Chinese stock index started a sharp decline immediately after the stock index futures were introduced, the cash market is found to play a more dominant role in the price discovery process. The new stock index futures market does not function well in its price discovery performance at its infancy stage, apparently due to high barriers to entry into this emerging futures market. Based on a newly proposed theoretically consistent asymmetric GARCH model, the results uncover strong bidirectional dependence in the intraday volatility of both markets. © 2011 Wiley Periodicals, Inc. Jrl Fut Mark