arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2307.03391q-fin.PMmath.OCq-fin.CPq-fin.RM
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统一自适应Black-Litterman均值-方差投资组合管理

On Unified Adaptive Black-Litterman Mean-Variance Portfolio Management

Questrom School of Business, Boston University(波士顿大学奎斯特隆商学院);National Tsing Hua University(国立清华大学)

Chi-Lin Li, Chung-Han Hsieh

AI总结:

提出一种结合因子观点生成、Black-Litterman后验估计、EWMA协方差估计和均值-方差优化的统一自适应投资组合管理框架,通过动态滑动窗口根据实现波动率调整估计周期,在十年实证中优于无BL观点的动态均值-方差优化并增强下行风险控制。

摘要:

本文提出一个统一的自适应投资组合管理框架,该框架结合了基于因子的观点生成、Black-Litterman (BL) 后验估计、EWMA协方差估计和均值-方差优化。关键机制是一个动态滑动窗口,它根据已实现的投资组合波动率调整估计周期,从而随时间更新因子估计、BL后验期望收益率和投资组合权重。在对标普500指数前100大市值成分股并考虑换手交易成本的十年实证研究中,所提出的方法优于没有BL观点的动态均值-方差优化,并提供更强的下行风险控制,但其相对表现仍依赖于基准。

英文摘要:

This paper proposes a unified adaptive portfolio-management framework that combines factor-based view generation, Black-Litterman (BL) posterior estimation, EWMA covariance estimation, and mean-variance optimization. The key mechanism is a dynamic sliding window that adjusts the estimation horizon according to realized portfolio volatility, thereby updating factor estimates, BL posterior expected returns, and portfolio weights over time. In a ten-year empirical study of the top 100 market-capitalization constituents of the S&P 500 with turnover transaction costs, the proposed method outperforms dynamic mean-variance optimization without BL views and provides stronger downside risk control, while its relative performance remains benchmark-dependent.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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