Analisis dampak penyeimbangan ulang berkala pada portofolio kombinasi timbal balik reksa dana pendapatan tetap, reksa dana ekuitas, dan reksa dana campuran dengan alokasi aset kontribusi risiko yang sama = Analysis of the impact of periodic rebalancing on a reciprocal combination portfolio fixed income mutual funds, equity mutual funds, and mixed mutual funds with the allocation of the same risk contribution assets