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Insider Trading with Memory under Random Deadline

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  • Kai Xiao
  • Yonghui Zhou
  • Utkucan Åžahin

Abstract

In this paper, we study a model of continuous-time insider trading in which noise traders have some memories and the trading stops at a random deadline. By a filtering theory on fractional Brownian motion and the stochastic maximum principle, we obtain a necessary condition of the insider’s optimal strategy, an equation satisfied. It shows that when the volatility of noise traders is constant and the noise traders’ memories become weaker and weaker, the optimal trading intensity and the corresponding residual information tend to those, respectively, when noise traders have no any memory. And, numerical simulation illustrates that if both the trading intensity of the insider and the volatility of noise trades are independent of trading time, the insider’s expected profit is always lower than that when the asset value is disclosed at a finite fixed time; this is because the trading time ahead is a random deadline which yields the loss of the insider’s information.

Suggested Citation

  • Kai Xiao & Yonghui Zhou & Utkucan Åžahin, 2021. "Insider Trading with Memory under Random Deadline," Journal of Mathematics, Hindawi, vol. 2021, pages 1-7, July.
    • Handle: RePEc:hin:jjmath:2973361
    DOI: 10.1155/2021/2973361
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