Journal
SCANDINAVIAN ACTUARIAL JOURNAL
Volume 2015, Issue 1, Pages 59-87Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03461238.2013.775964
Keywords
stochastic control; CRRA utility; option-based portfolio insurance; rate guarantee; martingale method; life insurance
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We consider an investor, with an uncertain lifetime, endowed with deterministic laboor income, who has the possibility to continuously invest in a Black-Scholes market and to buy life insurance or annuities. We solve the optimal consumption, investment and life insurance problem when the investor is restricted to fulfil an American capital guarantee. By allowing the guarantee to depend, in a very general way, on the past we include, among other possibilities, the interesting case of a minimum rate of return guarantee, commonly offered by pension companies. The optimal strategies turn out to be on option-based portfolio insurance form, but since the capital guarantee is valid at every intermediate point in time, re-calibration is needed whenever the constraint is active.
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