Path integral approach to the pricing of timer options with the Duru-Kleinert time transformation

Details Path integral approach to the pricing of timer options with the Duru-Kleinert time transformation Path integral approach to the pricing of timer options with the Duru-Kleinert time transformation

2011-01-19

arxiv.org/abs/1101.3713v1

Economy

Quantitative Finance

Pricing of Securities

Scientific paper

In this paper, a time substitution as used by Duru and Kleinert in their treatment of the hydrogen atom with path integrals is performed to price timer options under stochastic volatility models. We present general pricing formulas for both the perpetual timer call options and the finite time-horizon timer call options. These general results allow us to find closed-form pricing formulas for both the perpetual and the finite time-horizon timer options under the 3/2 stochastic volatility model as well as under the Heston stochastic volatility model. For the treatment of timer option under the 3/2 model we will rely on the path integral for the Morse potential, with the Heston model we will rely on the Kratzer potential.

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