Probability of informed trading during the COVID-19 pandemic: the case of the Romanian stock market

Cosmin Octavian Cepoi (), Victor Dragotă, Ruxandra Trifan () and Andreea Iordache ()
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Cosmin Octavian Cepoi: Bucharest University of Economic Studies
Ruxandra Trifan: Bucharest University of Economic Studies
Andreea Iordache: Bucharest University of Economic Studies

Financial Innovation, 2023, vol. 9, issue 1, 1-27

Abstract: Abstract Using data from the Bucharest Stock Exchange, we examine the factors influencing the probability of informed trading (PIN) during February—October 2020, a COVID-19 pandemic period. Based on an unconditional quantile regression approach, we show that PIN exhibit asymmetric dependency with liquidity and trading costs. Furthermore, building a customized database that contains all insider transactions on the Bucharest Stock Exchange, we reveal that these types of orders monotonically increase the information asymmetry from the 50th to the 90th quantile throughout the PIN distribution. Finally, we bring strong empirical evidence associating the level of information asymmetry to the level of fake news related to the COVID-19 pandemic. This novel result suggests that during episodes when the level of PIN is medium to high (between 15 and 50%), any COVID-19 related news classified as misinformation released during the lockdown period, is discouraging informed traders to place buy or sell orders conditioned by their private information.

Keywords: PIN; COVID-19; Market microstructure; Insider trading (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1186/s40854-022-00415-9

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