Large-scale portfolio allocation under transaction costs and model uncertainty
- We theoretically and empirically study large-scale portfolio allocation problems when transaction costs are taken into account in the optimization problem. We show that transaction costs act on the one hand as a turnover penalization and on the other hand as a regularization, which shrinks the covariance matrix. As an empirical framework, we propose a flexible econometric setting for portfolio optimization under transaction costs, which incorporates parameter uncertainty and combines predictive distributions of individual models using optimal prediction pooling. We consider predictive distributions resulting from highfrequency based covariance matrix estimates, daily stochastic volatility factor models and regularized rolling window covariance estimates, among others. Using data capturing several hundred Nasdaq stocks over more than 10 years, we illustrate that transaction cost regularization (even to small extent) is crucial in order to produce allocations with positive Sharpe ratios. We moreover show that performance differences between individual models decline when transaction costs are considered. Nevertheless, it turns out that adaptive mixtures based on high-frequency and low-frequency information yield the highest performance. Portfolio bootstrap reveals that naive 1=N-allocations and global minimum variance allocations (with and without short sales constraints) are significantly outperformed in terms of Sharpe ratios and utility gains.
Author: | Nikolaus HautschORCiDGND, Stefan Voigt |
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URN: | urn:nbn:de:hebis:30:3-438687 |
URL: | https://ssrn.com/abstract=3043216 |
Parent Title (English): | Center for Financial Studies (Frankfurt am Main): CFS working paper series ; No. 582 |
Series (Serial Number): | CFS working paper series (582) |
Publisher: | Center for Financial Studies |
Place of publication: | Frankfurt, M. |
Document Type: | Working Paper |
Language: | English |
Year of Completion: | 2017 |
Year of first Publication: | 2017 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2017/10/17 |
Tag: | high frequency data; model uncertainty; portfolio choice; regularization; transaction costs |
Issue: | September 26, 2017 |
Page Number: | 62 |
HeBIS-PPN: | 419143874 |
Institutes: | Wirtschaftswissenschaften / Wirtschaftswissenschaften |
Wissenschaftliche Zentren und koordinierte Programme / Center for Financial Studies (CFS) | |
Dewey Decimal Classification: | 3 Sozialwissenschaften / 33 Wirtschaft / 330 Wirtschaft |
JEL-Classification: | C Mathematical and Quantitative Methods / C1 Econometric and Statistical Methods: General / C11 Bayesian Analysis |
C Mathematical and Quantitative Methods / C5 Econometric Modeling / C52 Model Evaluation and Selection | |
Sammlungen: | Universitätspublikationen |
Licence (German): | Deutsches Urheberrecht |