Investigating the Relationship between Composite, Islamic, and Conventional Indexes in Indonesia

Abstract

Apart from the question of whether all indexes in financial markets are driven by similar factors, this study examines the long and short-run relationships between the composite index (JKSE), Islamic index (JII), and pure non-Islamic index (NST7) in the Indonesia financial market. The results show that there is at least one cointegrated equation among the JKSE, JII, and NST7. Furthermore, the output from VECM shows that only the JII has a significant long-run relationship with the JKSE. In the case of short-run relationships, the JII and NST7 do not significantly affect the JKSE, while the JII was significantly influenced by the JKSE. Otherwise, the Impulse Response Function shows that a shock on the JII will negatively affect both the JKSE and the NST7, while a shock on the NST7 is not very influential on the JKSE or the JII.