Tania, A. et al. 2025. THE EFFECT OF BETA DETERMINATION ON THE PERFORMANCE OF SHARIA AND NON-SHARIA STOCK PORTFOLIOS USING THE REWARD TO DIVERSIFICATION APPROACH: A STUDY OF THE INDONESIAN STOCK EXCHANGE. Jurnal Maneksi (Management Ekonomi Dan Akuntansi). 14, 4 (Nov. 2025), 2381–2398. DOI:https://doi.org/10.31959/jm.v14i4.3474.