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- W4289096921 abstract "In the frictionless discrete time financial market of Bouchard et al.(2015) we consider a trader who, due to regulatory requirements or internal risk management reasons, is required to hedge a claim $xi$ in a risk-conservative way relative to a family of probability measures $mathcal{P}$. We first describe the evolution of $pi_t(xi)$ - the superhedging price at time $t$ of the liability $xi$ at maturity $T$ - via a dynamic programming principle and show that $pi_t(xi)$ can be seen as a concave envelope of $pi_{t+1}(xi)$ evaluated at today's prices. Then we consider an optimal investment problem for a trader who is rolling over her robust superhedge and phrase this as a robust maximisation problem, where the expected utility of inter-temporal consumption is optimised subject to a robust superhedging constraint. This utility maximisation is carrried out under a new family of measures $mathcal{P}^u$, which no longer have to capture regulatory or institutional risk views but rather represent trader's subjective views on market dynamics. Under suitable assumptions on the trader's utility functions, we show that optimal investment and consumption strategies exist and further specify when, and in what sense, these may be unique." @default.
- W4289096921 created "2022-08-01" @default.
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- W4289096921 date "2018-12-28" @default.
- W4289096921 modified "2023-10-18" @default.
- W4289096921 title "The robust superreplication problem: a dynamic approach" @default.
- W4289096921 doi "https://doi.org/10.48550/arxiv.1812.11201" @default.
- W4289096921 hasPublicationYear "2018" @default.
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