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Insider trading at a random deadline with correlation between dynamic asset and stochastic liquidity

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  • Qiu, Jixiu
  • Zhou, Yonghui

Abstract

We propose a generalized continuous-time insider trading model, building upon the frameworks of Caldentey and Stacchetti (2010) and Collin-Dufresne and Fos (2016), with a correlation between the value of a risky asset following an Ornstein-Uhlenbeck-type process and the noise trading volume with volatility characterized by a general stochastic process. And a closed form of the market equilibrium is established, consisting of the insider's trading strategy and the market makers' pricing rule. It shows that at the equilibrium: (i) all of the insider's private information is released at the end of the transaction; (ii) market depth and market liquidity evolve as semi-martingales, respectively; and (iii) the equilibrium price is driven by a bridge process that solves an Ornstein-Uhlenbeck-type SDE. Numerical simulations show that as the correlation coefficient increases, the equilibrium price becomes more informative, leading to a decrease in both the trading intensity and the expected payoff for the insider.

Suggested Citation

  • Qiu, Jixiu & Zhou, Yonghui, 2025. "Insider trading at a random deadline with correlation between dynamic asset and stochastic liquidity," Applied Mathematics and Computation, Elsevier, vol. 488(C).
    • Handle: RePEc:eee:apmaco:v:488:y:2025:i:c:s0096300324005812
    DOI: 10.1016/j.amc.2024.129120
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    References listed on IDEAS

    as
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