Martingale Schrödinger bridges and optimal semistatic portfolios
Martingale Schrödinger bridges and optimal semistatic portfolios
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Martingale Schrödinger 桥和最优半静态组合
DOI:
10.1007/s00780-022-00490-x
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发表时间:
2023
影响因子:
1.7
通讯作者:
Zhao, Long
中科院分区:
文献类型:
--
作者:
Nutz, Marcel;Wiesel, Johannes;Zhao, Long
In a two-period financial market where a stock is traded dynamically and European options at maturity are traded statically, we study the so-called martingale Schrödinger bridge, that is, the minimal-entropy martingale measure among all models calibrated to option prices. This minimisation is shown to be in duality with an exponential utility maximisation over semistatic portfolios. Under a technical condition on the physical measure, we show that an optimal portfolio exists and provides an explicit solution for. This result overcomes the remarkable issue of non-closedness of semistatic strategies discovered by Acciaio et al. (Finance Stoch. 21:741–751, ). Specifically, we exhibit a dense subset of calibrated martingale measures with particular properties to show that the portfolio in question has a well-defined and integrable option position.
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DOI:
--
发表时间:
2019
期刊:
Social Science Research Network
影响因子:
--
作者:
P. Henry
通讯作者:
P. Henry
影响因子:
1.7
作者:
Beatrice Acciaio;Martin Larsson;W. Schachermayer
通讯作者:
W. Schachermayer
影响因子:
2
作者:
Altschuler, Jason M.;Niles-Weed, Jonathan;Stromme, Austin J.
通讯作者:
Stromme, Austin J.
影响因子:
1.7
作者:
Julien Guyon
通讯作者:
Julien Guyon
DOI:
10.1214/23-aap1970
发表时间:
2021
期刊:
ArXiv
影响因子:
--
作者:
George Deligiannidis;Valentin De Bortoli;A. Doucet
通讯作者:
A. Doucet