Heuristics for Portfolio Selection

Manfred Gilli () and Enrico Schumann
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Manfred Gilli: University of Geneva and Swiss Finance Institute

Chapter Chapter 10 in Optimal Financial Decision Making under Uncertainty, 2017, pp 225-253 from Springer

Abstract: Abstract Portfolio selection is about combining assets such that investors’ financial goals and needs are best satisfied. When operators and academics translate this actual problem into optimisation models, they face two restrictions: the models need to be empirically meaningful, and the models need to be soluble. This chapter will focus on the second restriction. Many optimisation models are difficult to solve because they have multiple local optima or are ‘badly-behaved’ in other ways. But on modern computers such models can still be handled, through so-called heuristics. To motivate the use of heuristic techniques in finance, we present examples from portfolio selection in which standard optimisation methods fail. We then outline the principles by which heuristics work. To make that discussion more concrete, we describe a simple but effective optimisation technique called Threshold Accepting and how it can be used for constructing portfolios. We also summarise the results of an empirical study on hedge-fund replication.

Keywords: Portfolio optimisation; Heuristics; Financial modelling; Model risk; Model errors; Hedge fund replication (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:spr:isochp:978-3-319-41613-7_10

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DOI: 10.1007/978-3-319-41613-7_10

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