Options Trading and Stock Price Informativeness

Jie Cao, Amit Goyal, Sai Ke and Xintong Zhan

Journal of Financial and Quantitative Analysis, 2024, vol. 59, issue 4, 1516-1540

Abstract: We document the causal effects of single-name options trading on the absolute level of information content of prices (stock price informativeness) by exploiting the Penny Pilot Program as an exogenous shock to options trading volume. We find that options trading increases underlying stock price informativeness and information acquisition by both option and stock investors, consistent with the framework of Goldstein and Yang (2015). The findings are driven by firms for which options are more important sources of information and firms with more efficiently priced options. Options market introduction in a sample of 25 other economies also leads to higher price informativeness.

Date: 2024
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