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| Type | Journal Article |
| Scope | Discipline-based scholarship |
| Title | Optimal and Naive Diversification in Currency Markets |
| Organization Unit | |
| Authors |
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| Item Subtype | Original Work |
| Refereed | Yes |
| Status | Published in final form |
| Language |
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| Journal Title | Management Science |
| Publisher | Institute for Operations Research and the Management Science |
| Geographical Reach | international |
| ISSN | 0025-1909 |
| Volume | 63 |
| Number | 10 |
| Page Range | 3347 - 3360 |
| Date | 2016 |
| Abstract Text | DeMiguel et al. [DeMiguel V, Garlappi L, Uppal R (2009) Optimal versus naïve diversification: How inefficient is the 1/N portfolio strategy? Rev. Financial Stud. 22(5):1915–1953] showed that in the stock market, it is difficult for an optimized portfolio constructed using mean-variance analysis to outperform a simple, equally weighted portfolio because of estimation error. In this paper, we demonstrate that portfolio optimization can be made to work in currency markets. The key difference between the two settings is that in currency markets interest rates provide a predictor of future returns that is free of estimation error, which permits the application of mean-variance analysis. We show that over the last 26 years, a mean-variance efficient portfolio constructed in this fashion has a Sharpe ratio of 0.91, versus only 0.15 for the equally weighted portfolio. We also consider the practical implementation of this strategy. |
| Digital Object Identifier | 10.1287/mnsc.2016.2497 |
| Other Identification Number | merlin-id:16098 |
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