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Calendar effects of the Colombo stock market

Author:

Athambawa Jahfer

South Eastern University of Sri Lanka, LK
About Athambawa
Department of Accountancy and Finance
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Abstract

This study examines the calendar effects specially day of the week effects and month of the year effects in the Colombo stock market. The study on the day of the week effect was done based on daily all share price index (ASPI) for the period January 2004 to June 2015 and the study on the month of the year effect employs based on monthly ASPI for the period January 1998 to June 2015. The calendar effects are examined by applying multiple regression (OLS and GARCH models) using dummy variables. Regression results show that presence of the day of the week effect and month of the year effect in the Colombo stock market during the study period. Findings indicate significantly positive high returns on Friday while Monday returns are significantly negative in consistent with previous studies. In addition, the results shows a significantly positive returns on Wednesday and Thursday. In the case of monthly effect, there is a significantly positive high returns in September in the Colombo stock market in contradict to previous findings. There is no evidence for January or April effects during the study period instead there is September effect in the Colombo stock market. The findings of the calendar effects are important to the financial managers, financial analysts and investors to take a fruitful investment decisions.

How to Cite: Jahfer, A., (2015). Calendar effects of the Colombo stock market. Journal of Management. 12(2), pp.121–132. DOI: http://doi.org/10.4038/jm.v12i2.7581
Published on 30 Oct 2015.
Peer Reviewed

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