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Portfolio efficiency with high-dimensional data as conditioning information

Caio Vigo Pereira

International Review of Financial Analysis, 2021, vol. 77, issue C

Abstract: In this paper, we build efficient portfolios using different frameworks proposed in the literature and drawing upon several datasets that contain an increasing number of predictors as conditioning information. We carry an extensive empirical study to investigate approaches that impose sparsity and dimensionality reduction, as well as possible latent factors driving the returns of the risky assets. In contrast to previous studies that made use of naive OLS and low-dimension information sets, we find that (i) accounting for large conditioning information sets, and (ii) the use of variable selection, shrinkage methods and factor models, such as the principal component regression and the partial least squares, provides better out-of-sample results as measured by Sharpe ratios, implied Sharpe ratios, and higher certainty equivalent returns (CER).

Keywords: Dimensionality reduction; Shrinkage; Efficient portfolios; Principal components regression (PCR); Partial least squares (PLS); Three-pass regression filter (3PRF); Ridge regression; LASSO (search for similar items in EconPapers)
JEL-codes: C32 C38 G11 G17 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:eee:finana:v:77:y:2021:i:c:s1057521921001460

DOI: 10.1016/j.irfa.2021.101811

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