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1.
本文对现货和黄金期货价格之间的均衡关系进行了协整检验分析,使用GARCH模型对黄金期货的最优套期保值比率进行了估算,以验证中国黄金期货套期保值绩效。结果表明,中国当前的现货和黄金期货之间存在着长期的均衡关系,市场的套期保值功能已得到了基本的发挥。文章最后依据实证结果提出了进一步改进的政策建议。  相似文献   

2.
本文对现货和黄金期货价格之间的均衡关系进行了协整检验分析,使用GARCH模型对黄金期货的最优套期保值比率进行了估算,以验证中国黄金期货套期保值绩效.结果表明,中国当前的现货和黄金期货之间存在着长期的均衡关系,市场的套期保值功能已得到了基本的发挥,文章最后依据实证结果提出了进一步改进的政策建议.  相似文献   

3.
本文利用沪深300股指期货上市以来的数据,以沪深300指数作为套期保值的现货资产,得到基于马尔科夫状态转移模型的最优套期保值比率,并与静态套期保值比率和考虑到现一期货长期协整关系的BEKK—GARCH模型得到的动态套期保值率进行比较,利用风险最小化原则和效用最大化原则进行套期保值绩效分析。实证结果表明.基于Markov状态转移模型的套期保值率具有最好的套期保值绩效.从而可以为投资者有效规避市场的系统性风险提供帮助。  相似文献   

4.
恒生指数和沪深300股指期货套期保值效果对比研究   总被引:2,自引:0,他引:2  
贺鹏  杨招军 《投资研究》2012,(4):123-133
本文利用OLS、ECM、ECM-GARCH模型对沪深300股指期货和恒生指数期货的最优套期保值率进行了估算,并在风险最小化框架下对它们的套期保值效果进行了对比研究。结果发现:无论是哪种股指期货,不考虑期现货间存在的协整关系会使估算的最优套期保值率偏高,影响套期保值效果;其次是虽然在样本内外,沪深300股指期货的套期保值效果比恒生指数期货的好,但是沪深300股指期货套期保值效果的稳定性比恒生指数差。此时,ECM-GARCH和OLS模型分别为样本内外投资者利用沪深300指数期货进行套期保值时的最佳选择;对于恒生指数股指期货,最优模型是ECM。  相似文献   

5.
本文以白糖期货为例,分别采用OLS模型、B-VAR模型和ECM模型,从组合投资方差最小化的视角实证研究我国期货市场套期保值有效性问题,同时利用样本内和样本外数据对不同套期保值比率下的套期保值有效性进行比较分析.结果显示:与不进行套期保值相比,参与套期保值能够显著降低组合资产收益风险,转移现货市场价格波动风险;无论样本内还是样本外,利用基于协整关系的ECM模型估计得到的套保比率进行套期保值效果都是最好的.  相似文献   

6.
本文以白糖期货为例,分别采用OLS模型、B-VAR模型和ECM模型,从组合投资方差最小化的视角实证研究我国期货市场套期保值有效性问题,同时利用样本内和样本外数据对不同套期保值比率下的套期保值有效性进行比较分析。结果显示:与不进行套期保值相比,参与套期保值能够显著降低组合资产收益风险,转移现货市场价格波动风险;无论样本内还是样本外,利用基于协整关系的ECM模型估计得到的套保比率进行套期保值效果都是最好的。  相似文献   

7.
我国股市近年波动剧烈,股票市场系统性风险可见一斑。为了可以使广大投资者在沪深300股指期货推出后能迅速正确地对其利用来规避系统性风险以及最大限度地实现套期保值.本文对沪深300股指期货套期保值进行了实证研究。在分析和比较常用的几种股指期货最优套期保值比率确定模型的基础上,基于方差最小化模型框架,利用沪深300股指期货合约模拟运行以来的样本数据,通过OLS法、VAR模型、ECM模型和GARCH模型四种估计方法,对其最优套期保值比率进行了实证测算和绩效比较.提出了相应的政策建议和投资策略。  相似文献   

8.
为了研究我国利率互换的套期保值功能,该文利用协整检验分析利率互换和国债的长期均衡关系,并通过确定套期保值比率的OLS模型和套期保值绩效的衡量指标,对利率互换的套期保值比率和绩效进行了实证研究。结果显示,我国当前利率互换和国债收益率并不存在长期均衡关系;利率互换市场尚未发挥套期保值功能,其运行效率有待进一步提高。  相似文献   

9.
作为机构投资者的证券投资基金,可以通过股指期货市场参与套期保值,达到管理股票组合市场风险的目的,其核心问题是最优套期保值比率的确定。本文选取沪深300指数期货和中证开放式基金指数作为研究对象,运用普通最小二乘法(OLS)、基于协整的误差修正模型(ECM)和误差修正-广义自回归条件异方差模型(EC-GARCH Model)分别估计了最小风险套期保值比率,同时对套期保值的绩效进行分析,认为在当前市场条件下,参与套期保值比不参与能够更好地管理现货风险,动态的EC-GARCH的绩效最好,OLS和ECM次之,但总体上三者差别不大,都可以达到良好的套期保值效果。  相似文献   

10.
周玉婷 《中国外资》2013,(24):172-173
在最小方差套期保值模型的基础上,借助Kroner and Sultan (1993)的ECM-GARCH模型将协整关系和时变方差结合起来,对PTA(精对苯二甲酸)期货套期保值比率进行研究。通过实证分析比较了该模型与幼稚模型、OLS模型、ECM模型以及B-VAR模型的套期保值效果。结果表明,该模型的套期保值有效性可达0.6614,明显高于其他模型,利用该模型进行套期保值可以更有效的规避现货价格风险。  相似文献   

11.
During the recent European sovereign debt crisis, returns on EMU government bond portfolios experienced substantial volatility clustering, leptokurtosis and skewed returns as well as correlation spikes. Asset managers invested in European government bonds had to derive new hedging strategies to deal with changing return properties and higher levels of uncertainty. In this environment, conditional time series approaches such as GARCH models might be better suited to achieve a superior hedging performance relative to unconditional hedging approaches such as OLS. The aim of this study is to test innovative hedging strategies for EMU bond portfolios for non-crisis and crisis periods. We analyze single and composite hedges with the German Bund and the Italian BTP futures contracts and evaluate the hedging effectiveness in an out-of-sample setting. The empirical analysis includes OLS, constant conditional correlation (CCC), and dynamic conditional correlation (DCC) multivariate GARCH models. We also introduce a Bayesian composite hedging strategy, attempting to combine the strengths of OLS and GARCH models, thereby endogenizing the dilemma of selecting the best estimation model. Our empirical results demonstrate that the Bayesian composite hedging strategy achieves the highest hedging effectiveness and compares particularly favorable to OLS during the recent sovereign debt crisis. However, capturing these benefits requires low transactions cost and efficiently functioning futures markets.  相似文献   

12.
This paper explores effective hedging instruments for carbon market risk. Examining the relationship between the carbon futures returns and the returns of four major market indices, i.e., the VIX index, the commodity index, the energy index and the green bond index, we find that the connectedness between the carbon futures returns and the green bond index returns is the highest and this connectedness is extremely pronounced during the market's volatile period. Further, we develop and evaluate hedging strategies based on three dynamic hedge ratio models (DCC-APGARCH, DCC-T-GARCH, and DCC-GJR-GARCH models) and the constant hedge ratio model (OLS model). Empirical results show that among the four market indices the green bond index is the best hedge for carbon futures and performs well even in the crisis period. The paper also provides evidence that the dynamic hedge ratio models are superior to the OLS model in the volatile period as more sophisticated models can capture the dynamic correlation and volatility spillover between the carbon futures and market index returns.  相似文献   

13.
Ederington (1979) proposed an effectiveness measure for futures hedging. Since then, this measure has been widely adopted in the literature to compare different hedge ratios against the OLS (ordinary least squares) hedge ratio. This note attempts to demonstrate this application is inappropriate. Ederington hedging effectiveness is only useful for measuring the risk reduction effect of the OLS hedge ratio. It does not apply to other hedge ratios and therefore should not serve as a criterion to compare different hedge strategies against the OLS strategy. A strict application of this measure almost always leads to an incorrect conclusion stating that the OLS hedge ratio is the best hedging strategy.  相似文献   

14.
殷炼乾  赵驰 《济南金融》2013,(12):25-29
本文以中国燃料油期货及现货数据为例,介绍了中国能源市场中对冲实践的一系列流程:从理论框架、模型选择、数据检验、对冲期限到对冲有效性检验。本文遵循该流程,对比了基于最小方差和效用最大化两类理论框架下的四类模型(OLS、VAR和两类不同的误差修正向量GARCH模型)。实证研究发现:(1)对冲效果与对冲期限呈现先上升后下降的倒U型关系;(2)在效用最大化理论框架下,采用基于向量的GARCH模型和15天动态对冲策略的投资组合对冲后修正夏普比率高达2.95,提升风险收益比的效果十分显著。  相似文献   

15.
套期保值、价格发现、资产配置是期货市场的三大基本职能。而在这三种职能中,最为重要的是套期保值,它是期货市场得以生存和发展的关键动因。在国内外套期保值研究中,最优套期保值比率的估计是套期保值研究最为核心的问题。而运用期货套期保值理论进行实践更是随着套期保值比率估计模型的不断优化、完善而向前发展的,本文通过对国内外套期保值研究相关文献进行分类,整理,综述,梳理出最优套期保值比率估计的研究思路和相关实证技术路线,概括出国内外最优套保比率的研究框架,以此来向国内相关研究学者指出未来的进一步研究方向,同时对国内期货交易主体进行套期保值操作提供了估计模型的选择建议。  相似文献   

16.
本文以沪铜期货的多头套期保值为研究对象,分别利用OLS模型、ECM模型和GARCH模型对一月期铜和三月期铜的套期保值比例及保值效果进行了分析,发现OLS模型对一月期铜的套期保值效果要优于其他模型的保值效果,而ECM模型和GARCH模型在三月期铜的套期保值方面显示的效果更好。这说明在一般情况下,具有动态特征的计量模型适合于较长的期货合约,其套期保值效果更好。  相似文献   

17.
This paper examines the impact of the determination of stock closing prices on futures price efficiency and hedging effectiveness with stock indices futures. The empirical results indicate that the increase in the length of the batching period of the stock closing call improves price efficiency in the futures closing prices and then enhances hedging performance in terms of the hedging risks. Additionally, from a utility‐maximization point of view, hedging performance does not improve after the introduction of the 5 min stock closing call, which can be explained by an improvement in price efficiency at the futures market close.  相似文献   

18.
This study presents empirical evidence on the efficiency and effectiveness of hedging U.S.-based international mutual funds with an Asia-Pacific investment objective. The case for active currency risk management is examined for a passive and a selective hedge, which is constructed with currency futures in the major currencies. Both static and dynamic hedging models are used to estimate the risk-minimizing hedge ratio. The results show that currency hedging improves the performance of internationally diversified mutual funds. Such hedging is beneficial even when based on prior optimal hedge ratios. Further, efficiency gains from hedging, as measured by the percent change in the Sharpe Index, are greatest under a selective portfolio strategy that is implemented with an optimal constant hedge ratio.  相似文献   

19.
In this paper, we define and analyze the sentiment‐styled index for the CSI 300 index futures in the Chinese futures market. Our sentiment‐styled index for the CSI 300 index futures from April 16, 2010 to April 30, 2019 is constructed by the first and second principal component analyses, rather than only by the first principal component analysis used in the Baker and Wurgler (Journal of Finance 61(4): 1645–1680, 2006) method. The sentiment‐styled index explains 78.38% of the sample variance. The vector error correction model is adapted to study the dynamics of cointegration of the sentiment‐styled index and the logarithmic futures price. We use the GARCH‐DCC model to illustrate the spillover effect between the sentiment‐styled index and the Chinese futures market. We show that this investor sentiment‐styled index does have the price discovery from the Granger causality and common factor weights and the hedging function from the Baba–Engle–Kraft–Kroner model empirically; furthermore, we use the curvature term of the sentiment‐styled index to determine the multiple unit roots. More empirical results for the sentiment‐styled index of the Chinese stock market, the sentiment‐styled index of the CSI 300 index futures, and the return of the CSI 300 index futures market are studied in this paper.  相似文献   

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