Voting for insider trading regulation. An experimental study of informed and uninformed traders’ preferences

Dominik Schmidt, Thomas Stöckl, & Stefan Palan

Journal of Banking and Finance (2024)

This paper aims to analyse traders’ approval of insider trading regulation, controlling for traders’ prospects of receiving non-public information.

Recommended citation: Schmidt, D. & Stöckl, T., & Palan S. (2024). Voting for insider trading regulation. An experimental study of informed and uninformed traders' preferences, Journal of Banking and Finance 169 107295, DOI 10.1016/j.jbankfin.2024.107295 https://doi.org/10.1016/j.jbankfin.2024.107295

Capital markets often regulate insider trading, but whether such regulation aligns with traders’ preferences is an open question. This study examined traders’ regulation preferences conditional on their prospects of becoming informed. Of 64 referenda, traders decided 41 (64%) against regulation. Moreover, traders’ prospects of becoming informed significantly impacted the outcomes of the referenda. In markets in which a group of traders has no chance of receiving inside information, 47% of the referenda are decided against regulation. When all traders could get such information, 81% are. Individual votes reveal that traders who know they will remain uninformed support regulation in 69.27% of the cases, while informed traders do so only 8.33% of the time. Traders who may or may not become informed support regulation 33.33% of the time.