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在理论上通过推导得出了Black-Litterman模型(B-L模型)最优权重与信心水平的关系式.实证部分开创性地将多元时间序列VEC模型运用到B-L模型的观点收益预测中.结果表明:且通过向量误差修正模型,实证取得了较好的效果.在任意一种做空限制下,随着信心水平在0%~70%水平上升,收益率有连续上升的趋势,并逐渐趋稳;风险有并不明显的下降的趋势.对同一信心水平而言,随做空限制的放宽,收益率有上升趋势.
In theory, the relation between optimal weight and confidence level of Black-Litterman model (BL model) is obtained through deduction.The empirical part pioneered the application of Multivariate Time Series VEC model to the profit forecast of BL model.The results show that: And through the vector error correction model, the empirical results have achieved good results.Under any kind of shortcomings, with the confidence level rising from 0% to 70%, the rate of return has a continuous upward trend, and gradually stabilize; risk There is no obvious downward trend.With the same level of confidence, with the relaxation of the short limit, the rate of return is on the rise.