Counter-cyclical Margins for Option Portfolios

Yuanyuan Chen, Qi Wu and Duan Li

Journal of Economic Dynamics and Control, 2023, vol. 146, issue C

Abstract: We propose a counter-cyclical initial margin model for option portfolios. Our model explores the intrinsic netting within a given portfolio of European options and outputs a constant upper bound of the maximum possible loss. This feature would allow option clearinghouses and regulators to gauge the tightest margin levels that are stable. We compare our model with the scenario-based SPAN model and the sensitivity-based SIMM model in terms of the netting efficiency and the procyclical property. Using the SPX options and the interest rate swaptions as examples, we quantify the minimum amount of additional margins needed to make them fully counter-cyclical. We then show how to strike a balance between risk-sensitivity and counter-cyclicality if needed by mixing our model flexibly with a prevailing risk-sensitive margin model.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:dyncon:v:146:y:2023:i:c:s0165188922002755

DOI: 10.1016/j.jedc.2022.104572

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