Indonesia Stock Exchange. From the regression
analysis obtained some conclusions. First, Monday's
return is different from any other day. Second, the
lowest return is concentrated in the second week at
the beginning of the month. Third, the negative
return on Monday is affected by the return on the
previous Friday. Fourth, the emergence of the
Monday effect is not the same throughout the time
of data observation (Azlina, 2009).
In stock return there are significant difference of
influence, which is proved by previous research
conducted by (Iramani and Mahdi, 2006), (Widodo,
2008), (Akbar, 2009), (Rita M. , 2009), (Ambarwati,
2009), (Maria and Syahyunan, 2013), (Lutfiaji,
2013), (Saputro, 2014) which found that trading day
had a significant effect on stock return. While
research conducted by (Prasetyo, 2006), (Pratomo,
2007), (Arieyani, 2011), (Wijaya dkk 2013) found
that trading days have no relationship to stock
returns.
Then, one of the strategies or techniques
commonly used by shareholders for decision-making
in stock investments is the market anomaly, which is
an unanticipated event or event and this offers the
shareholder an opportunity to earn an abnormal
share return (Kasdjan, Nazarudin, and Yusuf, 2017).
This market anomalies include Seasonal Anomalies,
Accounting Anomalies, Company Anomalies, Event
Anomalies.
In this research I chose Seasonal Anomalies as
an research object because according to Trisnadi and
Sedana (2016), the market anomaly violates the
hypothesis about the concept of capital market
efficiency that states investors can not expect price
and return based on stock prices in the past caused
by a random return, but can be predicted based on
the effect of certain calendars.
While seasonal anomalies is a seasonal market
which is seasonal, an anomaly that has the form of
deviation of efficient market hypothesis. Seasonal
anomalies or calender effect itself intends a market
anomaly or economic effect that appears related to
the calendar. These effects include different
behaviors of the stock market on different days of
the week, different times of the month, and different
time of year/season (Endarwati, 2017).
In general, efficient capital market situation
shows the relationship between market price and
market form. Later, the development of the
company's financial theory in this capital market
over the last few decades has been growing very
rapidly. Then later put forward the proposed
Efficient Market Hypothesis or better known as
Efficient Market Hypothesis which may be one of
the most famous breakthroughs proposed by Eugene
F. Fama in 1970 (Harijanto and Kurniawati, 2013).
The Efficient Market Hypothesis states that an
efficient market is a market where the prices of all
securities traded by investors have reflected all the
information. This information means the information
that comes from the past, present, or information
that is opinion or rational opinion circulating in the
market that can affect the price movement
(Tandelilin 2010). If a market is in an efficient state,
then the existing security prices should move at
random (Random Walk) and unpredictable
(Harijanto and Kurniawati, 2013).
Many of the findings suggest empirical evidence
that supports the concept of efficient capital markets.
In it, the conclusions obtained for each study show
varying results between each other (Harijanto and
Kurniawati, 2013)In his research, Dwi
Cahyaningdyah (2005) found the phenomenon of
Day of the Week Effect on the Jakarta Stock
Exchange, with the lowest return occurred on
Monday (Monday Effect) and the highest return
occurred on Friday (Weekend Effect). Then, Ricky
Chee-Jiun Chia dkk (2008), also found the
phenomenon of Day of the Week Effect in several
Capital Market in Asian Region like Capital Market
of Taiwan, Hong Kong, Singapore, and South
Korea. The study found that the rate of return for
each trading day differed significantly, including
Monday's tend to be negative and Friday's return
which tended to be higher than in other days.
Lutfur Rahman (2009) who conducted the
research on Dhaka Stock Exchange, found that
trading day had a significant effect on stock return
on Dhaka Stock Exchange. Rahman explained that
the schedule of news announcements related to
economic conditions affect investors' behavior in
conducting stock transactions, thus forming a daily
pattern of stock returns.After that, there is a testing
of January Effect that ever done by Wing-Keung
Wong, et al (2006) on the Singapore Stock
Exchange for the purpose of re-examining the
existence of Calendar Anomalies in the Singapore
Capital Market using the latest data divided into two
sub-periods, before the crisis and after the 1997
crisis. Through this research, it was found that the
anomaly phenomenon in the Singapore Capital
Market increasingly weakened its existence. The
study found that the January Effect phenomenon that
was positive in the pre-crisis period turned into a
negative value in the period after the crisis.
The objectives of this research are to investigate
the effect of difference of return that happened on
Day of the Week,the occurrence of Monday,
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