Pinning down an effective measure for probability of informed trading
Marvin Wee and
Pacific-Basin Finance Journal, 2016, vol. 40, issue PB, pages 456-475
This paper investigates whether measures of the probability of information-based trading (PIN) estimated from microstructure models capture the effects of information asymmetry and trading by informed traders. To address the issue of the joint hypothesis, we examine the effectiveness of these measures using a sample of merger and acquisition (M&A) announcements that are known to be associated with illegal insider trading. We find that the PIN measure decreases prior to the announcements, while a modified measure that allows for the autoregressive conditional duration (ACD) of trades and the time-varying probabilities of news better reflects the presence of informed trading. Our results also suggest that the modified specification (PIN-AACD) overcomes some of the estimation problems found in the PIN measure in prior research.
Keywords: Probability of informed trading; Autoregressive conditional duration; Insider trading; M&A announcements (search for similar items in EconPapers)
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Persistent link: http://EconPapers.repec.org/RePEc:eee:pacfin:v:40:y:2016:i:pb:p:456-475
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