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- W2952319324 abstract "We introduce a dynamic credit portfolio framework where optimal investment strategies are robust against misspecifications of the reference credit model. The risk-averse investor models his fear of credit risk misspecification by considering a set of plausible alternatives whose expected log likelihood ratios are penalized. We provide an explicit characterization of the optimal robust bond investment strategy, in terms of default state dependent value functions associated with the max-min robust optimization criterion. The value functions can be obtained as the solutions of a recursive system of HJB equations. We show that each HJB equation is equivalent to a suitably truncated equation admitting a unique bounded regular solution. The truncation technique relies on estimates for the solution of the master HJB equation that we establish." @default.
- W2952319324 created "2019-06-27" @default.
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- W2952319324 date "2016-03-27" @default.
- W2952319324 modified "2023-09-27" @default.
- W2952319324 title "Robust Optimization of Credit Portfolios" @default.
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- W2952319324 hasPublicationYear "2016" @default.
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