Peñaranda, Francisco (2009) Understanding portfolio efficiency with conditioning information. Financial Markets Group Discussion Papers (626). Financial Markets Group, The London School of Economics and Political Science, London, UK.
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Abstract
Contrary to the classic framework of passive strategies, if investors exploit return predictability through active strategies then there is a tension between the mean-variance frontiers that drive empirical work and the mean-variance preferences that are used in finance theory. We show that standard preferences choose portfolios on a frontier that has not been studied in the literature, develop new betas and Sharpe ratios to construct portfolio efficiency tests, and highlight some concerns with current empirical work. An empirical application to active strategies on stock portfolios sorted by size and book-to-market confirms the relevance of our theoretical results.
| Item Type: | Monograph (Discussion Paper) |
|---|---|
| Official URL: | https://www.fmg.ac.uk/ |
| Additional Information: | © 2009 The Author |
| Divisions: | Financial Markets Group |
| Subjects: | H Social Sciences > HF Commerce H Social Sciences > HB Economic Theory |
| JEL classification: | C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods: General > C12 - Hypothesis Testing G - Financial Economics > G1 - General Financial Markets > G11 - Portfolio Choice; Investment Decisions G - Financial Economics > G1 - General Financial Markets > G12 - Asset Pricing; Trading volume; Bond Interest Rates |
| Date Deposited: | 10 Jul 2009 15:05 |
| Last Modified: | 15 Sep 2023 23:15 |
| URI: | http://eprints.lse.ac.uk/id/eprint/24415 |
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