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多期限投资组合β系数误差的修正

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摘要 传统投资组合β系数的测度独立于投资期限的选择。文章在Levhari和Levy基于基准期限的多投资期限β系数推导的基础上,通过放松基准期限收益率均值和方差不变假设,对多期限投资组合β系数的测度加以改进,通过上证指数和上证50指数的实证发现,基于可变收益率均值和方差的改进多期限β系数估计值更符合实际β系数值,在此基础上,运用二项式拟合误差,构建β系数误差修正函数进一步提高改进β系数的精度。
出处 《统计与决策》 CSSCI 北大核心 2015年第4期25-28,共4页 Statistics & Decision
基金 国家自然科学基金资助项目(71073049) 国家自然科学基金国际合作与交流项目(71210107022) 高等学校博士学科点专项科研基金资助项目(20090161120034)
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参考文献9

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