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1.
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   

2.
文章采用OLS、ECM、CCC-BGARCH以及DCC-BGARCH模型分别计算了两支300ETF的最优套期保值比率,并分别比较了两支300ETF的套期保值效果,结果发现:动态多元GARCH类模型的效果明显好于OLS和ECM模型;无论采用哪种模型,华泰柏瑞沪深300ETF的套期保值效果都要好于嘉实沪深300ETF;由于华泰柏瑞沪深300ETF的高流动性和相对完善的套利机制,使得其适合较大方差变化的DCC-BGARCH模型;而嘉实沪深300ETF采用CCC-BGARCH模型的套期保值效果更好,这可能是因为嘉实沪深300ETF和沪深300股指期货间的关联性波动较小,相关系数更接近于常数的缘故。  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.
吴骏 《时代金融》2012,(12):219-220
本文基于沪深300股指期货真实数据,选取沪深300指数作为现货数据,用普通最小二乘法模型(OLS)、双变量向量自回归模型(B-VAR)、向量误差修正模型(ECM),以及广义自回归条件异方差模型(EC-GARCH)分别进行最优套期保值比率估计,并且比较了不同模型的套期保值绩效,认为ECM模型套期保值绩效最优。  相似文献   

5.
吴骏 《云南金融》2012,(4X):219-220
本文基于沪深300股指期货真实数据,选取沪深300指数作为现货数据,用普通最小二乘法模型(OLS)、双变量向量自回归模型(B-VAR)、向量误差修正模型(ECM),以及广义自回归条件异方差模型(EC-GARCH)分别进行最优套期保值比率估计,并且比较了不同模型的套期保值绩效,认为ECM模型套期保值绩效最优。  相似文献   

6.
本文在投资组合风险最小的前提下,运用GARCH模型研究沪深300股指期货的套期保值的效果,并计算相应的最优套期保值比率,研究结果表明,沪深300股指期货与所构造的股票组合之间的最优套期保值比率为1.281431,现货股票组合86.9%的变化可由沪深300股指期货反映,表明套期保值效果良好,由此可知,股指期货是一种行之有效的套期保值工具,但是,大于1的最优套期保值比率表明利用沪深300股指期货进行套期保值的成本较高,也说明本文构造的股票组合风险小于沪深300股指期货的风险,本文还就研究结论对投资者及政策制定者提出相应的建议。  相似文献   

7.
本文以沪深300指数期货中的IF1509合约为例,运用OLS模型与GARCH模型,对沪深300指数与股指期货合约IF1509进行套期保值,测算出最优套期保值比率。  相似文献   

8.
股指期货的最主要功能是套期保值,它是投资者进行风险管理的主要工具.ETF在我国发展迅速,必须通过股指期货的套期保值功能规避其系统性风险.本文根据跟踪误差最小化原则,构建出最优ETF组合来模拟沪深300股指现货.然后,运用OLS模型、B-VAR模型及VECM模型计算出ETF组合与沪深300股指期货套期保值的比率,并以这三个套期保值比率计算套期保值绩效,结果发现套期保值效率均达到了90%以上,属于高度有效.从而证明了沪深300股指期货可以很好的发挥套期保值功能.  相似文献   

9.
股指期货的最主要功能是套期保值,它是投资者进行风险管理的主要工具。ETF在我国发展迅速,必须通过股指期货的套期保值功能规避其系统性风险。本文根据跟踪误差最小化原则,构建出最优ETF组合来模拟沪深300股指现货。然后,运用OLS模型、B-VAR模型及VECM模型计算出ETF组合与沪深300股指期货套期保值的比率,并以这三个套期保值比率计算套期保值绩效,结果发现套期保值效率均达到了90%以上,属于高度有效。从而证明了沪深300股指期货可以很好的发挥套期保值功能。  相似文献   

10.
股指期货套期保值率计量模型及其实证研究   总被引:2,自引:0,他引:2  
本文首先介绍了套期保值的基本理论和估计模型,然后使用沪深300股指期货仿真交易数据和上证180ETF交易数据作为现货资产组合,应用OLS、VAR、VECM、GARCH模型估计套期保值率进行实证研究。通过"风险最小原则"来比较使用不同模型估计的套期保值率进行套期保值的效果,结果表明GARCH模型能够更好的捕获数据的异方差性,估计的套期保值率能够随着市场环境的变化而改变,应变能力强;同时OLS模型估计的套期保值率则能使投资者的风险显著降低。  相似文献   

11.
This paper examines the hedging effectiveness of the FTSE/ATHEX-20 and FTSE/ATHEX Mid-40 stock index futures contracts in the relatively new and fairly unresearched futures market of Greece. Both in-sample and out-of-sample hedging performances using weekly and daily data are examined, considering both constant and time-varying hedge ratios. Results indicate that time-varying hedging strategies provide incremental risk-reduction benefits in-sample, but under-perform simple constant hedging strategies out-of-sample. Moreover, futures contracts serve effectively their risk management role and compare favourably with results in other international stock index futures markets. Estimation of investor utility functions and corresponding optimal utility maximising hedge ratios yields similar results, in terms of model selection. For the FTSE/ATHEX Mid-40 contracts we identify the existence of speculative components, which lead to utility-maximising hedge ratios, that are different to the minimum variance hedge ratio solutions.  相似文献   

12.
Abstract:

This study proposes a dynamic hedge ratio, the combined ordinary least squares spread (COLSS), which combines the hedge ratio of ordinary least squares and the value of spread. Using this dynamic ratio for hedging with futures contracts, one can replace spot risk with spread risk. The COLSS captures not only the long-run equilibrium between spot and futures returns, but also the short-run deviation from equilibrium. The spread is forecast by one-period lagged stock market factors and high-order moments that are estimated by an options model. In the in-sample and out-of-sample tests, the COLSS strategy achieves significant risk reduction and outperforms the alternative models by a large utility improvement.  相似文献   

13.
This article develops a jump-dependent model to capture the dependences between spot and futures returns and their jumps simultaneously, named JD model. We examine hedging performance of the presenting JD model for the futures contracts of Hong Kong, Japan, Korea, Singapore, and Taiwan. The results have shown that the JD model has better out-of-sample performance than the OLS for Korea, Singapore, and Taiwan. Since these three markets have higher jump dependence between spot and futures, we consider that jump dependence plays an important role in hedging performance. The higher jump dependence means spot and futures markets move more closely when unusual news reveals itself and thus futures could hedge the spot more effectively when extreme unusual news arrives.  相似文献   

14.
摘要:基于不同套期保值模型,本文对沪深300股指期货的套期保值效应进行了实证分析,并通过“风险最小化”原则和“效用最大化”原则分别比较不同模型的套期保值绩效。结果发现,在“风险最小化”原则下,无论是对于样本内还是样本外数据,对角ECM.BGARCH(1,1)模型的套期保值绩效都为最优;在“效用最大化”原则下,无论风险系数水平如何,样本内DCC.GARCH模型的套期保值绩效最优,样本外标量ECM—BGARCH(1,1)模型的套期保值绩效最优。  相似文献   

15.
Ex ante hedging effectiveness of the FTSE 100 and FTSE Mid 250 index futures contracts is examined for a range of portfolios, consisting of stock market indexes and professionally managed portfolios (investment trust companies). Previous studies which focused on ex post hedging performance using spot portfolios that mirror market indexes are shown to overstate the risk reduction potential of index futures. Although ex ante hedge ratios are found to be characterised by intertemporal instability, ex ante hedging performance of direct hedges and cross hedges approaches that of the ex post benchmark when hedge ratios are estimated using a sufficient window size.  相似文献   

16.
Hedging with Chinese metal futures   总被引:1,自引:0,他引:1  
This paper evaluates different hedging strategies for aluminum and copper futures contracts traded at Shanghai Futures Exchange. In addition to usual candidates such as the traditional regression hedge ratio and the hedging strategy constructed from bivariate fractionally integrated generalized autoregressive conditional heteroskedasticity (BFIGARCH) model, two advanced specifications are proposed to account for impacts of the basis on market volatility and co-movements between spot and futures returns. Empirical results suggest that the basis has asymmetric effects and optimal hedging strategy constructed from the asymmetric BFIGARCH model tends to produce the best in-sample and out-of-sample hedging performance.  相似文献   

17.
This paper examines hedging effectiveness for the FTSE-100 Stock Index futures contract from 1984 to 1992. It investigates the appropriate econometric technique to use in estimating minimum variance hedge ratios by undertaking estimations using OLS, an ECM and GARCH. Simple OLS outperforms more complex econometric techniques. Additionally, the paper examines the impact ofhedge duration and time to expiration on estimated hedge ratios and hedge ratio stability over time. It is shown that hedge ratios and hedging effectiveness increase with hedge duration, hedge ratios approach unity as expiration approaches and while hedge ratios vary over time they are stationary.  相似文献   

18.
This paper aims to determine optimal hedge strategy for the Istanbul Stock Exchange (ISE)-30 stock index futures in Turkey by comparing hedging performance of constant and time-varying hedge ratios under mean-variance utility criteria. We employ standard regression and bivariate GARCH frameworks to estimate constant and time-varying hedge ratios respectively. The Turkish case is particularly challenging since Turkey has one of the most volatile stock markets among emerging economies and the turnover ratio as a measure of liquidity is very high for the market. These facts can be considered to highlight the great risk and, therefore, the extra need for hedging in the Istanbul Stock Exchange (ISE). The empirical results from the study reveal that the dynamic hedge strategy outperforms the static and the traditional strategies.  相似文献   

19.
With the introduction of the exchange-traded German wind power futures, opportunities for German wind power producers to hedge their volumetric risk are present. We propose two continuous-time multivariate models for wind power utilization at different wind sites, and discuss the properties and estimation procedures for the models. Applying the models to wind index data for wind sites in Germany and the underlying wind index of exchange-traded wind power futures contracts, the estimation results of both models suggest that they capture key statistical features of the data. We show how these models can be used to find optimal hedging strategies using exchange-traded wind power futures for the owner of a portfolio of so-called tailor-made wind power futures. Both in-sample and out-of-sample hedging scenarios are considered, and, in both cases, significant variance reductions are achieved. Additionally, the risk premium of the German wind power futures is analysed, leading to an indication of the risk premium of tailor-made wind power futures.  相似文献   

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