LJUBLJANA (Slovenia), September 20 (SeeNews) â The blue-chip SBITOP index of the Ljubljana Stock Exchange (LJSE) fell 0.57% to 856.96 points on Friday, hit by a drop in the share prices of port operator Luka Koper [LJE:LKPG] and chemicals producer Cinkarna Celje [LJE:CICG], bourse data showed.