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arXiv 1003.3582q-fin.PMmath.OCmath.PR
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幂效用最大化的风险规避渐近性

Risk Aversion Asymptotics for Power Utility Maximization

Marcel Nutz

摘要:

本文考虑了具有电力效用的最优消费和投资的经济问题。研究了相对风险厌恶度趋于无穷大或趋于1时的最优策略。对于一般半鞅模型,得到了最优消费的收敛性;对于连续模型,得到了最优交易策略的收敛性。限制与指数和对数效用有关。为了得到这些结果,我们结合了最优控制,凸分析和倒向随机微分方程(BSDES)的方法。

英文摘要:

We consider the economic problem of optimal consumption and investment with power utility. We study the optimal strategy as the relative risk aversion tends to infinity or to one. The convergence of the optimal consumption is obtained for general semimartingale models while the convergence of the optimal trading strategy is obtained for continuous models. The limits are related to exponential and logarithmic utility. To derive these results, we combine approaches from optimal control, convex analysis and backward stochastic differential equations (BSDEs).

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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