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Short interest and the stock market relation with news sentiment from traditional and social media sources

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  • Ben Chamberlain
  • Zhangxin (Frank) Liu
  • Lee A. Smales

Abstract

We examine how the stock market relation to news sentiment—from traditional and social media (Twitter) sources—interacts with short selling of stocks. Our sample includes the S&P500 constituents for the period January 2016 to December 2020, providing 704,452 firm‐day observations. We find evidence that both news sources are positively related to returns. The relationship is stronger for firms with a high short interest ratio, for small firms, and particularly for firms that are both small and highly shorted. This is consistent with short sellers targeting firms that are most responsive to (negative) news releases and so more likely to compensate for the additional costs encountered in shorting.

Suggested Citation

  • Ben Chamberlain & Zhangxin (Frank) Liu & Lee A. Smales, 2023. "Short interest and the stock market relation with news sentiment from traditional and social media sources," Australian Economic Papers, Wiley Blackwell, vol. 62(2), pages 321-334, June.
    • Handle: RePEc:bla:ausecp:v:62:y:2023:i:2:p:321-334
    DOI: 10.1111/1467-8454.12297
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