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"Pricing Life Insurance: Combining Economic, Financial, and
Actuarial Approaches," Journal
of Insurance Issues, Hong Mao, James M. Carson, Krzysatof
M. Ostaszewski, and Luo Shoucheng, Fall 2004, Vol. 27, No. 2,
pp. 134-159. Full-text articles soon will be available through
ABI/INFORM and EBSCO; click
here for article PDF.
ABSTRACT
This paper examines the pricing of term life insurance based on
the economic approach of profit maximization, and incorporating
the financial approach of stochastic interest rates, investment
returns, and the insolvency option, while also including actuarial
modeling of mortality risk. Optimal price (premium) is obtained
by optimizing a stochastic objective function based on maximizing
the expected net present value (NPV) of insurer profit. Expected
claim payments are calculated based on the Cox, Ingersoll, Ross
(1985) financial valuation model. Our work analyzes numerically
the influence of various parameters on optimal price, optimal
expected NPV of insurer profit, and the insolvency put option
value. We examine several parameters including the speed of adjustment
in the mean reverting prices, the initial value of the short run
equilibrium interest rate, the volatility of interest rate, the
volatility of asset portfolio, the long run equilibrium interest
rate, and the age of the insured. Findings demonstrate that optimal
prices generally are most sensitive to changes in the long run
equilibrium interest rate. Factors that have a strong influence
on the price of the insolvency option include the age of the insured,
volatility of interest rate, and volatility of the asset portfolio,
especially at larger values of these parameters.
[Key Words: life insurance pricing; economic pricing; financial
pricing; actuarial pricing; stochastic optimization; insolvency]
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