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Calendar “anomalies” in the Portuguese stock market

Calendar “anomalies” in the Portuguese stock market In this paper we search for calendar regularities in the Portuguese stock market. We did not find the Weekday or the January “anomalies” but other significant regularities were found which constitutes evidence against market efficiency. The significant “anomalies” were the Pre-holiday effect (where average returns are twelve times higher the other days' returns) and a Turn-of- the-month effect. Statistically, the most robust of these “anomalies” is the Holiday effect but, economically, the most significant is the Turn-of-the-month effect. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Investment Analysts Journal Taylor & Francis

Calendar “anomalies” in the Portuguese stock market

Investment Analysts Journal , Volume 39 (71): 14 – Jan 1, 2010
14 pages

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References (48)

Publisher
Taylor & Francis
Copyright
© 2010 Taylor and Francis Group, LLC
ISSN
2077-0227
eISSN
1029-3523
DOI
10.1080/10293523.2010.11082518
Publisher site
See Article on Publisher Site

Abstract

In this paper we search for calendar regularities in the Portuguese stock market. We did not find the Weekday or the January “anomalies” but other significant regularities were found which constitutes evidence against market efficiency. The significant “anomalies” were the Pre-holiday effect (where average returns are twelve times higher the other days' returns) and a Turn-of- the-month effect. Statistically, the most robust of these “anomalies” is the Holiday effect but, economically, the most significant is the Turn-of-the-month effect.

Journal

Investment Analysts JournalTaylor & Francis

Published: Jan 1, 2010

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