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arXiv 1503.08969q-fin.MF
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带交易约束的多先验模型中的无差别定价与套期保值

Indifference Pricing and Hedging in a Multiple-Priors Model with Trading Constraints

Huiwen Yan, Gechun Liang, Zhou Yang

摘要:

本文研究了模型不确定性和交易约束下衍生品的效用无差异定价问题,其中效用被表示为跨期消费和终端财富的可加随机微分效用,不确定性前景根据Chen和Epstein(2002)的多先验模型进行排序.价格由两个正向-倒向随机微分方程的最优随机控制问题(美式期权的情况下混合了最优停时)决定。利用倒向随机微分方程和偏微分方程方法,证明了在修正的股利率下,买入价和卖价都与Black-Scholes风险中性价格密切相关。如果没有交易约束或模型不确定性消失,这两个价格实际上会彼此重合。最后讨论了欧式期权和美式期权的两个应用。

英文摘要:

This paper considers utility indifference valuation of derivatives under model uncertainty and trading constraints, where the utility is formulated as an additive stochastic differential utility of both intertemporal consumption and terminal wealth, and the uncertain prospects are ranked according to a multiple-priors model of Chen and Epstein (2002). The price is determined by two optimal stochastic control problems (mixed with optimal stopping time in the case of American option) of forward-backward stochastic differential equations. By means of backward stochastic differential equation and partial differential equation methods, we show that both bid and ask prices are closely related to the Black-Scholes risk-neutral price with modified dividend rates. The two prices will actually coincide with each other if there is no trading constraint or the model uncertainty disappears. Finally, two applications to European option and American option are discussed.

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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