The bourse's blue-chip BELEX15 inched down 0.25% to 640.69 points after retreating 0.56% in the previous trading session.
The broader BELEXline added 0.06% to 1,257.08 points on Friday after losing 0.41% on Thursday. The joint SRX index of the bourses in Belgrade and Vienna ticked up 0.23% 281.72.
Fallers outnumbered gainers 21 to 20, while the share prices of 17 companies remained flat on Friday.
Total turnover on the BELEX rose to 123 million dinars ($1.83 million/1.28 million euro) from 84 million dinars on Thursday.
Blue chip producer of cookers and household heating devices Alfa Plam tumbled 4.54% to 7,016 dinars in Friday's highest turnover of 9.9 million dinars.
Blue chip engineering and telecommunications company Telefonija fell 2.27% to 1,808 dinars in the next highest turnover of 7.1 million dinars.
Blue chip lender AIK Banka slid 1.17% to 2,447 dinars in the third highest turnover of 4.7 million dinars.
Blue chip rubber and chemicals group Tigar posted the highest climb on Friday with shares soaring 8.15% to 650 dinars.
Cigarette producer Duvanska Industrija Nis, majority-owned by Philip Morris, paced the decliners. Shares dropped 4.58% to 2,623 dinars.
(1 euro= 95.9658 Serbian dinars)