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Firm-specific sentiment and individual option's implied volatility slope

Author

Listed:
  • Bei Chen
  • Quan Gan

Abstract

Purpose - Previous literature shows that market sentiment and the steepness of index option's implied volatility slope have a negative relation. This paper investigates the relation between firm-specific sentiment and individual option's implied volatility slope both theoretically and empirically. Design/methodology/approach - The authors develop a simple model with option traders' sentiment heterogeneity to show that sentiment and the steepness of individual option's implied volatility slope have a positive relation. Findings - When firm-specific sentiment is higher (more bullish), individual option's implied volatility slope becomes steeper. The positive relation is stronger when option traders' beliefs on risk are more dispersed. Empirical results support the theoretical model predictions. Originality/value - Although both firm-specific sentiment and individual options implied volatility slope predict future stock returns, there is no research exploring the relation between them. In particular, none of previous studies associates implied volatility slope's stock return predictability to investor behavior such as sentiment. The authors’ findings provide a behavior-based explanation on why steep implied volatility slope negatively predicts cross-sectional stock returns.

Suggested Citation

  • Bei Chen & Quan Gan, 2022. "Firm-specific sentiment and individual option's implied volatility slope," Review of Behavioral Finance, Emerald Group Publishing Limited, vol. 15(5), pages 672-693, March.
    • Handle: RePEc:eme:rbfpps:rbf-10-2021-0216
    DOI: 10.1108/RBF-10-2021-0216
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