Krzysztof Podgórski
Prefekt Statistiska institutionen, Professor
A linear test for the global minimum variance portfolio for small sample and singular covariance
Författare
Summary, in English
Bodnar and Schmid (2008) derived the distribution of the global minimum variance portfolio weights and obtained the distribution of the test statistics for the general linear hypothesis. Their results are obtained in the case when the number of observations n is bigger or equal than the size of portfolio k. In the present paper, we extend the result by analyzing the portfolio weights in a small sample case of
n < k, with the singular covariance matrix. The results are illustrated using actual stock returns. A discussion of practical relevance of the model is presented.
n < k, with the singular covariance matrix. The results are illustrated using actual stock returns. A discussion of practical relevance of the model is presented.
Avdelning/ar
- Statistiska institutionen
Publiceringsår
2015
Språk
Engelska
Publikation/Tidskrift/Serie
Working Papers in Statistics
Issue
10
Fulltext
- Available as PDF - 500 kB
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Dokumenttyp
Working paper
Förlag
Department of Statistics, Lund university
Ämne
- Other Natural Sciences not elsewhere specified
Nyckelord
- singular co-variance matrix
- singular Wishart distribution
- small sample problem
- global minimum variance portfolio
Aktiv
Published