Model-Free Bounds for Multi-Asset Options Using Option-Implied Information and Their Exact Computation

Ariel Neufeld (), Antonis Papapantoleon () and Qikun Xiang ()
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Ariel Neufeld: Division of Mathematical Sciences, Nanyang Technological University, 637371 Singapore
Antonis Papapantoleon: Delft Institute of Applied Mathematics, Delft University of Technology, 2628 Delft, The Netherlands; Institute of Applied and Computational Mathematics, Foundation for Research and Technology—Hellas, 70013 Heraklion, Greece
Qikun Xiang: Division of Mathematical Sciences, Nanyang Technological University, 637371 Singapore

Management Science, 2023, vol. 69, issue 4, 2051-2068

Abstract: We consider derivatives written on multiple underlyings in a one-period financial market, and we are interested in the computation of model-free upper and lower bounds for their arbitrage-free prices. We work in a completely realistic setting, in that we only assume the knowledge of traded prices for other single- and multi-asset derivatives and even allow for the presence of bid–ask spread in these prices. We provide a fundamental theorem of asset pricing for this market model, as well as a superhedging duality result, that allows to transform the abstract maximization problem over probability measures into a more tractable minimization problem over vectors, subject to certain constraints. Then, we recast this problem into a linear semi-infinite optimization problem and provide two algorithms for its solution. These algorithms provide upper and lower bounds for the prices that are ε -optimal, as well as a characterization of the optimal pricing measures. These algorithms are efficient and allow the computation of bounds in high-dimensional scenarios (e.g., when d = 60). Moreover, these algorithms can be used to detect arbitrage opportunities and identify the corresponding arbitrage strategies. Numerical experiments using both synthetic and real market data showcase the efficiency of these algorithms, and they also allow understanding of the reduction of model risk by including additional information in the form of known derivative prices.

Keywords: model-free bounds; option-implied information; multi-asset options; bid–ask spread; cutting plane method; no-arbitrage gap; arbitrage detection (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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