Cooperative Game Theory of Hierarchies: One Approach to Solving the Low-Risk Puzzle?

Tobias Hiller ()
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Tobias Hiller: Department of Microeconomics, University Leipzig, 04107 Leipzig, Germany

Risks, 2025, vol. 13, issue 5, 1-20

Abstract: In this article, we extend the application of cooperative game theory to the so-called low-risk puzzle. Specifically, we apply concepts that consider hierarchies on the assets in the allocation of portfolio risk. These hierarchies have not previously been considered in portfolio risk allocation using cooperative game theory. We demonstrate our idea through a simulation study. Our results show that considering hierarchies can contribute to solving the low-risk puzzle. Our findings may advance further developments in portfolio theory.

Keywords: low-risk puzzle; portfolio risk; cooperative game theory; hierarchy; permission values; wH values (search for similar items in EconPapers)
JEL-codes: C G0 G1 G2 G3 K2 M2 M4 (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jrisks:v:13:y:2025:i:5:p:86-:d:1646830

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