ISLAMIC FINANCIAL COMMUNICATION: Reading the Performance of the Indonesian and Malaysian Indices in 2008-2012

Abstract

In the realm of Sharia-based investment, financial communication serves as a critical bridge between market performance and investor trust. This study investigates the performance evaluation of Islamic stock indices in Indonesia and Malaysia from 2008 to 2012, treating index metrics not merely as raw data, but as communicative signals of market resilience and risk-return balance. Adopting the performance evaluation framework by Jordan et al. (2012), this research aims to provide a comparative analysis that assists global investors in making informed, data-driven decisions within the Southeast Asian Islamic financial landscape. Utilizing quantitative data from official national index repositories, the study evaluates performance through the lens of risk-adjusted returns. The findings reveal a compelling communicative paradox: while Indonesia recorded a higher average daily return in nominal terms, these returns were accompanied by significantly higher standard deviations, signaling greater volatility to risk-averse investors. Conversely, Malaysia demonstrated superior risk-adjusted returns during both the overall and growth periods, as evidenced by higher Sharpe and Jensen’s Alpha indices. This suggests that the Malaysian market communicated a more stable and efficient premium for the risks undertaken. Interestingly, the Treynor Index indicated that Indonesia performed better when considering only systematic risk, suggesting a robust underlying structure that withstands broader market shifts. During periods of decline, while both indices posted negative returns, Indonesia showed greater relative resilience. This study concludes that "Islamic Financial Communication" must go beyond reporting returns; it requires a nuanced articulation of risk-adjusted metrics to align with the sophisticated expectations of modern investors. These findings offer valuable insights for financial communicators and fund managers in tailoring their transparency and reporting strategies to enhance institutional credibility in the competitive Islamic capital market.