Understanding the volatility smile of options markets through microsimulation

G. Qiu, D. Kandhai and P. M. A. Sloot

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Abstract: In this work, we aim to gain a better understanding of the volatility smile observed in options markets through microsimulation (MS). We adopt two types of active traders in our MS model: speculators and arbitrageurs, and call and put options on one underlying asset. Speculators make decisions based on their expectations of the asset price at the option expiration time. Arbitrageurs trade at different arbitrage opportunities such as violation of put-call parity. Difference in liquidity among options is also included. Notwithstanding its simplicity, our model can generate implied volatility (IV) curves similar to empirical observations. Our results suggest that the volatility smile is related to the competing effect of heterogeneous trading behavior and the impact of differential liquidity.

Date: 2007-09, Revised 2008-10
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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:0709.2070

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