This paper investigates methods of value-at-risk (VaR) estimation using extreme value theory (EVT). It compares two different estimation methods, 'two-step subsample bootstrap' based on moment estimation and m...This paper investigates methods of value-at-risk (VaR) estimation using extreme value theory (EVT). It compares two different estimation methods, 'two-step subsample bootstrap' based on moment estimation and maximum likelihood estimation (MLE), according to their theoretical bases and computation procedures. Then, the estimation results are analyzed together with those of normal method and empirical method. The empirical research of foreign exchange data shows that the EVT methods have good characters in estimating VaR under extreme conditions and 'two-step subsample bootstrap' method is preferable to MLE.展开更多
提出基于 VaR 确定期货最优套期保值比率原理,并建立了以组合 VaR 为目标函数的套期保值优化决策模型,一是从理论上推导了 VaR 最优套期比,二是研究发现 VaR 最优套期保值比在期货合约期望收益率为零,期货和现货收益率完全相关或 VaR ...提出基于 VaR 确定期货最优套期保值比率原理,并建立了以组合 VaR 为目标函数的套期保值优化决策模型,一是从理论上推导了 VaR 最优套期比,二是研究发现 VaR 最优套期保值比在期货合约期望收益率为零,期货和现货收益率完全相关或 VaR 置信水平接近于100%的情况下趋近于最小方差最优套期比;现货和期货价格变动完全一致情况下,VaR 最优套期比等于传统的套期比,三是得出了 VaR 最优套期比由反映套期保值者投机需求和纯套期保值两部分组成的结论.展开更多
基金the National Natural Science Foundation of China (No. 79970041).
文摘This paper investigates methods of value-at-risk (VaR) estimation using extreme value theory (EVT). It compares two different estimation methods, 'two-step subsample bootstrap' based on moment estimation and maximum likelihood estimation (MLE), according to their theoretical bases and computation procedures. Then, the estimation results are analyzed together with those of normal method and empirical method. The empirical research of foreign exchange data shows that the EVT methods have good characters in estimating VaR under extreme conditions and 'two-step subsample bootstrap' method is preferable to MLE.
文摘提出基于 VaR 确定期货最优套期保值比率原理,并建立了以组合 VaR 为目标函数的套期保值优化决策模型,一是从理论上推导了 VaR 最优套期比,二是研究发现 VaR 最优套期保值比在期货合约期望收益率为零,期货和现货收益率完全相关或 VaR 置信水平接近于100%的情况下趋近于最小方差最优套期比;现货和期货价格变动完全一致情况下,VaR 最优套期比等于传统的套期比,三是得出了 VaR 最优套期比由反映套期保值者投机需求和纯套期保值两部分组成的结论.
