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On the surplus management of funds with assets and liabilities in presence of solvency requirements

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  • Benjamin Avanzi
  • Ping Chen
  • Lars Frederik Brandt Henriksen
  • Bernard Wong

Abstract

In this paper we consider a company whose assets and liabilities evolve according to a correlated bivariate geometric Brownian motion, such as in Gerber and Shiu (2003). We determine what dividend strategy maximises the expected present value of dividends until ruin in two cases: (i) when shareholders won't cover surplus shortfalls and a solvency constraint (as in Paulsen, 2003) is consequently imposed, and (ii) when shareholders are always to fund any capital deficiency with capital (asset) injections. In the latter case, ruin will never occur and the objective is to maximise the difference between dividends and capital injections. Developing and using appropriate verification lemmas, we show that the optimal dividend strategy is, in both cases, of barrier type. Both value functions are derived in closed form. Furthermore, the barrier is defined on the ratio of assets to liabilities, which mimics some of the dividend strategies that can be observed in practice by insurance companies. Existence and uniqueness of the optimal strategies are shown. Results are illustrated.

Suggested Citation

  • Benjamin Avanzi & Ping Chen & Lars Frederik Brandt Henriksen & Bernard Wong, 2022. "On the surplus management of funds with assets and liabilities in presence of solvency requirements," Papers 2203.05139, arXiv.org, revised Aug 2022.
    • Handle: RePEc:arx:papers:2203.05139
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    References listed on IDEAS

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    1. Benjamin Avanzi, 2009. "Strategies for Dividend Distribution: A Review," North American Actuarial Journal, Taylor & Francis Journals, vol. 13(2), pages 217-251.
    2. Hans Gerber & Elias Shiu, 2003. "Geometric Brownian Motion Models for Assets and Liabilities: From Pension Funding to Optimal Dividends," North American Actuarial Journal, Taylor & Francis Journals, vol. 7(3), pages 37-51.
    3. Evan L. Porteus, 1977. "On Optimal Dividend, Reinvestment, and Liquidation Policies for the Firm," Operations Research, INFORMS, vol. 25(5), pages 818-834, October.
    4. Decamps, Marc & De Schepper, Ann & Goovaerts, Marc, 2009. "Spectral decomposition of optimal asset-liability management," Journal of Economic Dynamics and Control, Elsevier, vol. 33(3), pages 710-724, March.
    5. Kristoffer Lindensjö & Filip Lindskog, 2020. "Optimal dividends and capital injection under dividend restrictions," Mathematical Methods of Operations Research, Springer;Gesellschaft für Operations Research (GOR);Nederlands Genootschap voor Besliskunde (NGB), vol. 92(3), pages 461-487, December.
    6. Avanzi, Benjamin & Henriksen, Lars Frederik Brandt & Wong, Bernard, 2018. "On The Distribution Of The Excedents Of Funds With Assets And Liabilities In Presence Of Solvency And Recovery Requirements," ASTIN Bulletin, Cambridge University Press, vol. 48(2), pages 647-672, May.
    7. Løkka, Arne & Zervos, Mihail, 2008. "Optimal dividend and issuance of equity policies in the presence of proportional costs," Insurance: Mathematics and Economics, Elsevier, vol. 42(3), pages 954-961, June.
    8. Decamps, Marc & De Schepper, Ann & Goovaerts, Marc, 2006. "A path integral approach to asset-liability management," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 363(2), pages 404-416.
    9. Avanzi, Benjamin & Shen, Jonathan & Wong, Bernard, 2011. "Optimal Dividends and Capital Injections in the Dual Model with Diffusion," ASTIN Bulletin, Cambridge University Press, vol. 41(2), pages 611-644, November.
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