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A model of information diffusion with asymmetry and confidence effects in financial markets

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  • Yang, Haijun
  • Qi, Shu
  • Zhang, Zhou
  • Koslowsky, David

Abstract

We present a model of multi-period continuous information diffusion in financial markets. We show that price and trading volume exhibit asymmetric term structures to information flow, where the diffusion rate accelerates more slowly at short horizons than it decelerates at long horizons. Bounded rationality is modelled by an endogenous trader confidence index which declines as stock price information becomes noisier, where lower confidence translates into lower trading volume and slower price accretion. Information diffusion slows and asymmetries are accentuated as traders lose confidence in information accuracy. Our empirical findings support the model's predictions of asymmetric momentum patterns and confidence effects.

Suggested Citation

  • Yang, Haijun & Qi, Shu & Zhang, Zhou & Koslowsky, David, 2021. "A model of information diffusion with asymmetry and confidence effects in financial markets," The North American Journal of Economics and Finance, Elsevier, vol. 57(C).
    • Handle: RePEc:eee:ecofin:v:57:y:2021:i:c:s1062940821000395
    DOI: 10.1016/j.najef.2021.101404
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    1. Cai, Xing & Xia, Wei & Huang, Weihua & Yang, Haijun, 2024. "Dynamics of momentum in financial markets based on the information diffusion in complex social networks," Journal of Behavioral and Experimental Finance, Elsevier, vol. 41(C).

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    More about this item

    Keywords

    Asymmetrical information diffusion; Confidence effects; Momentum; Financial markets;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G40 - Financial Economics - - Behavioral Finance - - - General

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