Insurance–finance arbitrage

Abstract: Most insurance contracts are inherently linked to financial markets, be it via interest rates, or—as hybrid products like equity-linked life insurance and variable annuities—directly to stocks or indices. However, insurance contracts are not for trade except sometimes as surrender to the selling office. This excludes the situation of arbitrage by buying and selling insurance contracts at different prices. Furthermore, the insurer uses private information on top of the publicly available one about financial markets. This paper provides a study of the consistency of insurance contracts in connection with trades in the financial market with explicit mention of the information involved.

By defining strategies on an insurance portfolio and combining them with financial trading strategies, we arrive at the notion of insurance–finance arbitrage (IFA). In analogy to the classical fundamental theorem of asset pricing, we give a fundamental theorem on the absence of IFA, leading to the existence of an insurance–finance-consistent probability. In addition, we study when this probability gives the expected discounted cash-flows required by the EIOPA best estimate.

The generality of our approach allows to incorporate many important aspects, like mortality risk or general levels of dependence between mortality and stock markets. Utilizing the theory of enlargements of filtrations, we construct a tractable framework for insurance–finance consistent valuation

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Mathematical finance. - 34, 3 (2024) , 739-773, ISSN: 1467-9965

Classification
Soziale Probleme, Sozialdienste, Versicherungen

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2023
Creator
Artzner, Philippe
Eisele, Karl-Theodor
Schmidt, Thorsten

DOI
10.1111/mafi.12412
URN
urn:nbn:de:bsz:25-freidok-2381486
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
25.03.2025, 1:53 PM CET

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Associated

Time of origin

  • 2023

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