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Estimating portfolio risk for tail risk protection strategies

机译:估算尾风险保护策略的投资组合风险

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摘要

We forecast portfolio risk for managing dynamic tail risk protection strategies, based on extreme value theory, expectile regression, copula-GARCH and dynamic generalized autoregressive score models. Utilizing a loss function that overcomes the lack of elicitability for expected shortfall, we propose a novel expected shortfall (and value-at-risk) forecast combination approach, which dominates simple and sophisticated standalone models as well as a simple average combination approach in modeling the tail of the portfolio return distribution. While the associated dynamic risk targeting or portfolio insurance strategies provide effective downside protection, the latter strategies suffer less from inferior risk forecasts, given the defensive portfolio insurance mechanics.
机译:我们预测基于极值理论,预期回归,Copula-Garch和动态广义自回归分数模型的管理动态尾风险保护策略的投资组合风险。利用损失函数克服了预期的缺陷缺乏产生的缺失,我们提出了一种新的预期缺口(和价值 - 风险)预测组合方法,其主导了简单和复杂的独立模型以及建模的简单平均组合方法投资组合尾部返回分配。虽然相关的动态风险目标或投资组合保险策略提供有效的下行保护,但考虑到防守投资组合保险机构,后一种策略从劣等风险预测中遭受较低的损失。

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