Portfolio selection and risk sharing via risk budgeting

Asimit, V., Chong, W. F., Tunaru, R. and Zhou, F. (2025) Portfolio selection and risk sharing via risk budgeting. Insurance: Mathematics and Economics, 125. 103139. ISSN 1873-5959 doi: 10.1016/j.insmatheco.2025.103139

Abstract/Summary

Risk budgeting is an effective risk management tool that a decision-maker uses to create a risk portfolio with a predetermined risk profile. This paper provides a rich discussion about the theory and practice on how to construct risk budgeting portfolios in a variety of settings. We revisit the usual portfolio selection setting with and without clustered risk budgeting targets, and we then provide an approach on how to extend the usual setting to situations in which a non-hedgeable risk is present or fixed sub-portfolios are aimed by the decision-maker. Another study of this paper is how to include risk budgeting targets in risk sharing, which has not been discussed in the literature. Implementation issues are also discussed, and some bespoke algorithms are provided to identify such risk budgeting portfolios. Numerical experiments are performed for real-life financial data, and we explain the risk mitigation effect of our proposed portfolio. Specifically, financial risk budgeting portfolios with social responsibility targets are constructed.

Item Type	Article
URI	https://centaur.reading.ac.uk/id/eprint/125450
Identification Number/DOI	10.1016/j.insmatheco.2025.103139
Refereed	Yes
Divisions	Henley Business School > Finance and Accounting
Publisher	Elsevier
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