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arXiv 2104.02688q-fin.MF
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离散时间无无套利条件的定价

Pricing without no-arbitrage condition in discrete time

Laurence Carassus, Emmanuel Lépinette

摘要:

在离散时间背景下,我们研究了金融产品定价的中心问题。几十年来,无套利条件和鞅测度在解决这一问题上发挥了重要作用。基于凸对偶而非鞅测度对偶,提出了一种新的超复制成本估计方法:价格用Fenchel共轭和双共轭表示,不需要任何无套利条件,超套期保值问题的解决内生地导致了一个弱的无套利条件,称为瞬时利润缺失(AIP),在此条件下价格是有限的.我们详细研究了这个条件,给出了几个刻画,并将其与无套利条件进行了比较。

英文摘要:

In a discrete time setting, we study the central problem of giving a fair price to some financial product. For several decades, the no-arbitrage conditions and the martingale measures have played a major role for solving this problem. We propose a new approach for estimating the super-replication cost based on convex duality instead of martingale measures duality: The prices are expressed using Fenchel conjugate and bi-conjugate without using any no-arbitrage condition.The super-hedging problem resolution leads endogenously to a weak no-arbitrage condition called Absence of Instantaneous Profit (AIP) under which prices are finite. We study this condition in details, propose several characterizations and compare it to the no-arbitrage condition.

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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