Abstract
Asian options are popular financial derivative securities. Unfortunately, no exact pricing formulas exist for their price under continuous-time models. Asian options can also be priced on the lattice, which is a discretized version of the continuous- time model. But only exponential-time algorithms exist if the options are priced on the lattice without approximations. Although efficient approximation methods are available, they lack accuracy guarantees in general. This paper proposes a novel lattice structure for pricing Asian options. The resulting pricing algorithm is exact (i.e., without approximations), converges to the value under the continuous-time model, and runs in subexponential time. This is the first exact, convergent lattice algorithm to break the long-standing exponential-time barrier.
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An early version of this paper appeared in the Proceedings of the 15th Annual ACM-SIAM Symposium on Discrete Algorithms, 2004.
T.-S. Dai was supported in part by NSC grant 94-2213-E-033-024.
Y.-D. Lyuu was supported in part by NSC grant 94-2213-E-002-088.
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Dai, TS., Lyuu, YD. An exact subexponential-time lattice algorithm for Asian options. Acta Informatica 44, 23–39 (2007). https://doi.org/10.1007/s00236-006-0033-9
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DOI: https://doi.org/10.1007/s00236-006-0033-9