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OPTIMAL SURRENDER TIME FOR A VARIABLE ANNUITY WITH A FIXED INSURANCE FEE

  • Jeon, Junkee (Department of Applied Mathematics & Institute of Natural Science Kyung Hee University) ;
  • Park, Kyunghyun (Department of Mathematical Sciences Seoul National University)
  • Received : 2020.04.02
  • Accepted : 2020.12.23
  • Published : 2021.03.31

Abstract

This paper studies the optimal surrender policies for a variable annuity (VA) contract with a surrender option and a fixed insurance fee for guaranteed minimum maturity benefits (GMMB). In our proposed model, a policyholder pays the fixed insurance fee. Based on the integral transform techniques, we derive the analytic integral equations for the optimal surrender boundary and the value function of the VA contract that can be solved numerically by recursive integration method. We provide numerical values for the value function, the optimal surrender boundary, and the expected optimal surrender time.

Keywords

References

  1. J. Bertrand, P. Bertrand, and J. P. Ovarlez, The Mellin Transform, The Transforms and Applications, Handbook (A.D. Poularkas, ed.). CRC Press, Boca Raton, FL, 1996.
  2. C. Bernard, A. MacKay, and M. Muehlbeyer, Optimal surrender policy for variable annuity guarantees, Insurance Math. Econom. 55 (2014), 116-128. https://doi.org/10.1016/j.insmatheco.2014.01.006
  3. P. Ciurlia, Valuation of European continuous-installment options, Comput. Math. Appl. 62 (2011), no. 6, 2518-2534. https://doi.org/10.1016/j.camwa.2011.04.073
  4. T. F. Coleman, Y. Li, and M.-C. Patron, Hedging guarantees in variable annuities under both equity and interest rate risks, Insurance Math. Econom. 38 (2006), no. 2, 215-228. https://doi.org/10.1016/j.insmatheco.2005.06.002
  5. A. Erdlyi, W. Magnus, F. Oberhettinger, and F. G. Tricomi, Tables of Integral Transforms, vol. 1-2, New York: McGraw-Hill, 1954.
  6. A. Friedman, Parabolic variational inequalities in one space dimension and smoothness of the free boundary, J. Functional Analysis 18 (1975), 151-176. https://doi.org/10.1016/0022-1236(75)90022-1
  7. J. Huang, M. Subrahmanyam, and G. Yu, Pricing and hedging American options: a recursive integration method, Rev. Financ. Stud. 9 (1996), 277-300. https://doi.org/10.1093/rfs/9.1.277
  8. H. Lee and B. Ko, Valuing equity-indexed annuities with icicled barrier options, J. Korean Statist. Soc. 47 (2018), no. 3, 330-346. https://doi.org/10.1016/j.jkss.2018.04.001
  9. G. Peskir and A. Shiryaev, Optimal Stopping and Free-Boundary Problems, Lectures in Mathematics ETH Zurich, Birkhauser Verlag, Basel, 2006.
  10. Y. Shen, M. Sherris, and J. Ziveyi, Valuation of guaranteed minimum maturity benefits in variable annuities with surrender options, Insurance Math. Econom. 69 (2016), 127-137. https://doi.org/10.1016/j.insmatheco.2016.04.006
  11. I. N. Sneddon, The Use of Integral Transforms, New York: Mcgraw-Hill, 1972.