Document details

Fearful asymmetry: an analysis of pre-earnings abnormal returns

Author(s): Amaro, João Tiago Mira Duarte

Date: 2010

Persistent ID:

Origin: Repositório Institucional da UNL

Subject(s): Earnings announcements; Abnormal returns; AAR; SAR


In this paper we study the returns on a set of different strategies, which are based on the sign and magnitude of the pre-earnings announcement return for a group of US stocks and for some international markets which provides an additional measure of robustness. We also propose a new methodology for the evaluation of abnormal returns. Evidence is found that stocks with negative abnormal returns on the days prior to the earnings announcement have a subsequent higher return on the days following the announcement. A trading strategy based on these findings is then reproduced and its results are analyzed.

A Work Project, presented as part of the requirements for the Award of a Masters Degree in Finance from the NOVA – School of Business and Economics

Document Type Master thesis
Language English
Advisor(s) Santa-Clara, Pedro
Contributor(s) Amaro, João Tiago Mira Duarte
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