Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/41391 
Year of Publication: 
2009
Series/Report no.: 
CFR working paper No. 09-08
Publisher: 
University of Cologne, Centre for Financial Research (CFR), Cologne
Abstract: 
We investigate and test hypotheses on how informed trading varies with market-wide factors and the structural and trading characteristics of a firm. We find strong evidence of commonality in informed trading, and a systematic dependence of informed trading on firm characteristics that is largely consistent with intuition and earlier theory and empirical evidence, wherever available. We accordingly decompose informed trading into two components: one that reflects information asymmetry with respect to skilled information processors with potentially private information on systematic factors or who generate a private informational advantage using public data; and another unpredictable component that reflects truly private information, potentially of traditional insiders. We test the pricing relevance of both these components and find that it is only the unpredictable component reflecting truly private information that is priced, and is priced more strongly and in a manner more robust than total informed trading. Our pricing-relevance results strongly support Easley and O'Hara (2004) and do not support Hughes, et al. (2007).
Subjects: 
Market microstructure
Common factors
Risk factors
Asymmetric information
JEL: 
G10
G12
G14
Document Type: 
Working Paper

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