Efficient Cardinality/Mean-Variance Portfolios

Abstract : We propose a novel approach to handle cardinality in portfolio selection, by means of a biobjective cardinality/mean-variance problem, allowing the investor to analyze the efficient tradeoff between return-risk and number of active positions. Recent progress in multiobjective optimization without derivatives allow us to robustly compute (in-sample) the whole cardinality/mean-variance efficient frontier, for a variety of data sets and mean-variance models. Our results show that a significant number of efficient cardinality/mean-variance portfolios can overcome (out-of-sample) the naive strategy, while keeping transaction costs relatively low.
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R. Brito, Luís Vicente. Efficient Cardinality/Mean-Variance Portfolios. 26th Conference on System Modeling and Optimization (CSMO), Sep 2013, Klagenfurt, Austria. pp.52-73, ⟨10.1007/978-3-662-45504-3_6⟩. ⟨hal-01286399⟩

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