Jurnal Ekonomi dan Bisnis (Jan 2019)
ANALISIS DAMPAK RAMADHAN TERHADAP KINERJA IHSG DAN INDEKS SEKTORAL PERIODE 2008 – 2018
Abstract
This research aims to analyze trend of stock volatility during Ramadhan, both on the composite index (IHSG) and sectoral price index. This research employs data ranging from 2008 – 2018 accessed from Eikon – Centre of Economic and Business Data Faculty of Economics and Business Universitas Indonesia. In order to analyze whether or not price volatility might differ between Ramadhan and other periods, this research employs Non-Parametric Mann Whitney Test, where the result shows that there is not significant difference of stock price volatility between Ramadhan and other periods, as shown by p-values above error level by 5%. During Ramadhan, the increase in stock price is not as high as those in other periods, even at the same time, trade during Ramadhan tends to be more dynamic (higher variance). In order to analyze trend of stock price during Ramadhan, this research employs ARCH GARCH Model, where healthcare sector is the only that experience significant increase in stock price during Ramadhan along 2008 – 2018. The ARCH coefficient is 0.996, while the GARCH coefficient is 0.128. If analyzed deeper, IHSG return during Ramadhan is not significantly different from other months along 2008 – 2018, even lower. During Ramadhan, the average growth of IHSG return is -0.04%, while during other periods, the average growth is 0.07%. Nevertheless, the result appears to be different when analyzed using sectoral industry return. According to data processing of the research, it is found that healthcare sector is the only one that is increasing during Ramadhan. Along 2008 – 2018, the increase in return of healthcare sector is 3.21%, while in other periods, it is only increasing by 0.41%. The increase in return of healthcare sector has been mainly driven by the increase in positive expectation of investor due to higher sales performance of firms in healthcare industry. The main sales increase focuses on nutrition product and prescription medication. Therefore, this finding can be a strategic consideration for investor to gain more return upon their portfolio investment.
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