April 1 (SeeNews) - The blue-chip index of the Belgrade Stock Exchange, the BELEX15, fell on Monday, dragged down by losses in insurer Dunav Osiguranje [BEL:DNOS] and Aerodrom Nikola Tesla [BEL:AERO], bourse data showed. The BELEX15 lost 0.18% to close at 1,157.35 points. Dunav, which generated the single largest turnover of 467,050 dinars, declined by 0.92%, closing at 1,611 dinars, as 290 shares changed hands. Aerodrom Nikola Tesla shed 0.30% to close at 1,994 dinars in a trade of five shares. Civil engineering company Energoprojekt Holding [BEL:ENHL] was the only blue-chip gainer on Monday, advancing by 3.69% to 421 dinars as 200 shares traded. The broader BELEXline, a free-float market capitalisation-weighted index, fell slightly, by 0.03%, to 2,517.17 points at close. Total turnover on the Belgrade bourse jumped to 198.4 million dinars ($1.8 million/1.7 million euro) from 10.7 million dinars on Friday. Most of the turnover on Monday was generated by trade in government securities, which accounted for some 197.6 million of the total, compared to 2.6 million dinars on Friday. (1 euro = 117.198 dinars)