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arXiv 2602.01968math.OC
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可违约市场中的最优清算

Optimal Liquidation in a Defaultable Market

National Research University Higher School of Economics(国立高等经济大学)

Daniel Hernández-Hernńdez, Harold A. Moreno-Franco, José-Luis Pérez

AI总结:

本文研究了可违约市场中大型投资组合的最优清算问题,通过布朗运动建模违约风险,并给出价值函数的显式解及最优策略描述。

摘要:

本文探讨了在存在违约风险的市场中,如何对由易受违约风险影响的证券组成的大型投资组合进行最优清算。违约时间通过描述公司价值演变的布朗运动来表示,其资产在市场中可供投资者购买。考虑到出售大量资产会对价格产生显著影响,进而影响投资组合的价值,本文分析了描述最优清算策略的控制问题。在适当的模型假设下,给出了价值函数的显式解,并获得了最优策略的精确描述。

英文摘要:

In this paper we address the problem of optimal liquidation of a large portfolio composed by securities exposed to default risk. The default time is described in terms of a Brownian motion representing the evolution of the value of the firm, whose assets are available in the market for investors. Considering that selling a large number of assets has a significant impact in the price, and hence in the portfolio's value, the control problem involved to describe the optimal strategy to liquidate a large position is analyzed. Under suitable assumptions in the model, an explicit solution is given to the value function and a precise description of the optimal strategy is obtained.

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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