Identification of the Halloween Effect in Swedish Sectors

University essay from Umeå universitet/Företagsekonomi; Umeå universitet/Företagsekonomi


Our thesis researches the Halloween effects in the Swedish stock market from a sector perspective. The notion Halloween effect refers to higher returns during the period November until April than the period May until October. The anomaly has been confirmed by previous researchers in Sweden among other countries. There has not been any definite explanation for this anomaly. The majority of explanations base on the assumption that the anomaly is a market wide and induced by changes in investment behavior. However, previous research has shown that the Halloween effect could be limited to certain sectors which experience significantly higher returns during winter months than the summer months. The sectors that exhibited the high Halloween effect tend to be heavy industry sectors while consumer oriented sectors tend to outperform during summer periods. In our study we research the Swedish sectors to test whether the findings of previous researches are true for other market as well. Our result indicates that the Halloween effect is present in a few sectors and not market wide. The findings thus support previous research that the Halloween effect is sector specific. The sectors that exhibited the highest Halloween effect were sectors in heavy industry. 

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