TASYA, TASYA (2026) STRATEGI ALOKASI SAHAM BPJS KETENAGAKERJAAN BERBASIS MEAN-VARIANCE RETURN BILANGAN KOMPLEKS DENGAN ANALISIS KUADRAN UNTUK OPTIMASI CADANGAN KLAIM = STOCK ALLOCATION STRATEGY FOR BPJS KETENAGAKERJAAN USING MEAN-VARIANCE BASED ON COMPLEX NUMBER RETURN WITH QUADRANT ANALYSIS FOR CLAIM RESERVE OPTIMIZATION. Skripsi thesis, Universitas Hasanuddin.