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ABSTRACT This paper estimates the effect of news positioning on the speed of price discovery, using exogenous variation in prominent (“front‐page”) positioning of news articles on the Bloomberg terminal. Front‐page articles see 240% higher trading volume and 176% larger absolute excess returns during the first 10 minutes after publication than equally important non‐front‐page articles. Overall, the information in front‐page articles is fully incorporated into prices within an hour of publication. The response to non‐front‐page information of similar importance eventually converges but takes more than two days to be fully reflected in prices.
Anastassia Fedyk (Wed,) studied this question.