Mercoledì 20 Gennaio alle ore 13, presso l'aula Master al 5° piano del Dipartimento MEMOTEF (Sapienza Università di Roma, via del Castro Laurenziano 9) si terrà il seminario:
"The Robust Merton Problem of an Ambiguity Averse Investor" Prof. Sara Biagini, Dipartimento di Economia e Finanza-LUISS G. Carli
Abstract: We derive a closed form portfolio optimization rule for an investor who is di dent about mean return and volatility estimates, and has a CRRA utility. The novelty is that con dence is here represented using ellipsoidal uncertainty sets for the drift, given a volatility realization. This speci cation a ords a simple and concise analysis, as the optimal portfolio allocation policy is shaped by a rescaled market Sharpe ratio, computed under the worst case volatility. The result is based on a max-min Hamilton-Jacobi-Bellman-Isaacs PDE, which extends the classical Merton problem and reverts to it for an ambiguity-neutral investor.
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Cordiali saluti Gabriele Stabile