Arbeitspapier
Estimation of optimal portfolio compositions for small sample and singular covariance matrix
In the paper we consider the optimal portfolio choice problem under parameter uncertainty when the covariance matrix of asset returns is singular. Very useful stochastic representations are deduced for the characteristics of the expected utility optimal portfolio. Using these stochastic representations, we derive the moments of higher order of the estimated expected return and the estimated variance of the expected utility optimal portfolio. Another line of applications leads to their asymptotic distributions obtained in the high-dimensional setting. Via a simulation study, it is shown that the derived high-dimensional asymptotic distributions provide good approximations of the exact ones even for moderate sample sizes.
- Sprache
-
Englisch
- Erschienen in
-
Series: Working Paper ; No. 15/2022
- Klassifikation
-
Wirtschaft
Portfolio Choice; Investment Decisions
- Thema
-
singular Wishart distribution
mean-variance portfolio
Moore-Penrose inverse
- Ereignis
-
Geistige Schöpfung
- (wer)
-
Bodnar, Taras
Mazur, Stepan
Nguyen, Hoang
- Ereignis
-
Veröffentlichung
- (wer)
-
Örebro University School of Business
- (wo)
-
Örebro
- (wann)
-
2022
- Handle
- Letzte Aktualisierung
-
10.03.2025, 11:41 MEZ
Datenpartner
Dieses Objekt wird bereitgestellt von:
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Objekttyp
- Arbeitspapier
Beteiligte
- Bodnar, Taras
- Mazur, Stepan
- Nguyen, Hoang
- Örebro University School of Business
Entstanden
- 2022
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