Overnight Reversal and the Asymmetric Reaction to News

„News released overnight has a significant directional impact on individual shares’ opening prices, i.e., the market tends to open higher (lower) when news with positive (negative) sentiment is published. However, the market opening is not fully efficient due to over- or underreactions of market participants to the news, resulting in a predictable pattern of returns on the following trading day. In particular, we find that large daytime returns followed by overnight news with strong sentiment lead to a predictable return reversal during the subsequent trading day..”

Thomas Dangl Vienna University of Technology

Stefan Salbrechter Vienna University of Technology

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