April 29 (SeeNews) - BELEX15, the blue-chip index of the Belgrade Stock Exchange, fell by 1.11% on Tuesday to close at 1,140.36 points, dragged down by losses in three blue chips - insurer Dunav Osiguranje [BEL:DNOS], construction company Jedinstvo [BEL:JESV], and Aerodrom Nikola Tesla [BEL:AERO], bourse data showed.