A Mixed Bond and Equity Fund Model for the Valuation of Segregated Fund Policies
43 Pages Posted: 12 Nov 2019
Date Written: October 26, 2019
Segregated fund and variable annuity policies are typically issued on mutual funds invested in both fixed income and equity asset classes. However, due to the lack of specialized models to represent the dynamics of fixed income fund returns, the literature has primarily focused on studying long-term investment guarantees on single-asset equity funds. This article develops a mixed bond and equity fund model in which the fund return is linked to movements of the yield curve. Theoretical motivation for our proposed specification is provided through an analogy with a portfolio of rolling horizon bonds. Moreover, basis risk between the portfolio return and its risk drivers is naturally incorporated into our framework. Numerical results show that the fit of our model to segregated fund data is adequate. Finally, the valuation of segregated fund policies is illustrated and it is found that the interest rate environment can have a substantial impact on guarantee costs.
Keywords: mutual fund model, bond fund, yield curve, investment guarantee, variable annuities, basis risk
JEL Classification: G32, C51, C63
Suggested Citation: Suggested Citation