This paper investigates the existence of two anomalies in Indonesia and Malaysia Shari’ah compliance;
the month of the year and pre-holiday effect, and their implication for stock market efficiency.
Investing in Shari’ah compliant is different from investing in conventional stock. Conventional stock
market follows the capital market set of rules and law, while Shari’ah follows not only the capital
market set of laws but also the Islamic principles. Most of the previous studies investigated issues
related to conventional stock market, this study take one step further by investigating issue related
to Shari’ah compliant instrument and make comparison between both Shari’ah compliance stock
market in Indonesia and Malaysia. We document high and significant returns in month and preday
in Indonesia and Malaysia stock market that represent by the Shari’ah compliance. Our result
indicate that the month of the year effect is prevalent in Indonesia and Malaysia Shari’ah compliance.
