Information Leakage and Market Efficiency

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Rumor Has It: Sensationalism in Financial Media (2015, background): “As the theoretical models of Van Bommel (2003) and Brunnermeier (2005) argue, informed traders have an incentive to leak inside information in advance of official announcements.”
Can Information Be Locked-Up? Informed Trading Ahead of Macro-News Announcements (2016, unknown): “, Hirshleifer, Subrahmanyam, and Titman (1994) and Brunnermeier (2005)). Consistent with the premise of these theories, the available evidence suggests that some investors do in fact enjoy a short-lived informational advantage in a variety of contexts. For example, some investors appear to enjoy ear”
Big Data as a Governance Mechanism (2019, unknown): “Imprecision in the data could have an ambiguous effect on price efficiency (Brunnermeier 2005).”
Government Intervention and Information Aggregation by Prices: Government Intervention and Information Aggregation by Prices (2015, unknown): “Substituting E [θ|sG, P ] and var [θ|sG, P ] into (4), and using the definition (10) of w (ρ), the”