Dynamic portfolio selection with mispricing and model ambiguity
Frederi Viens (),
Baron Law and
Annals of Finance, 2015, vol. 11, issue 1, pages 37-75
We investigate optimal portfolio selection problems with mispricing and model ambiguity under a financial market which contains a pair of mispriced stocks. We assume that the dynamics of the pair satisfies a “cointegrated system” advanced by Liu and Timmermann in a 2013 manuscript. The investor hopes to exploit the temporary mispricing by using a portfolio strategy under a utility function framework. Furthermore, she is ambiguity-averse and has a specific preference for model ambiguity robustness. The explicit solution for such a robust optimal strategy, and its value function, are derived. We analyze these robust strategies with mispricing in two cases: observed and unobserved mean-reverting stochastic risk premium. We show that the mispricing and model ambiguity have completely distinct impacts on the robust optimal portfolio selection, by comparing the utility losses. We also find that the ambiguity-averse investor who ignores the mispricing or the model ambiguity, suffers a substantially larger utility loss if the risk premium is unobserved, compared to when it is observed. Copyright Springer-Verlag Berlin Heidelberg 2015
Keywords: Portfolio selection; Model ambiguity; Mispricing; Stochastic risk premium; Robust control; Utility maximization; C61; G11; G17; G22 (search for similar items in EconPapers)
References: View references in EconPapers View complete reference list from CitEc
Citations View citations in EconPapers (3) Track citations by RSS feed
Downloads: (external link)
Access to full text is restricted to subscribers.
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
Persistent link: http://EconPapers.repec.org/RePEc:kap:annfin:v:11:y:2015:i:1:p:37-75
Ordering information: This journal article can be ordered from
Access Statistics for this article
Annals of Finance is currently edited by Anne Villamil
More articles in Annals of Finance from Springer
Series data maintained by Sonal Shukla ().