The BELEX15 added 0.18%, closing at 985.72 points.
Jedinstvo led the blue-chip gainers by rising 2.79% to 7,450 dinars at close on a volume of 3 traded shares.
NIS followed, closing 0.38% higher at 800 dinars in 4.9 million dinars of turnover, the highest for the day.
There were no decliners among the traded blue-chip companies on Friday.
Insurer Dunav Osiguranje [BEL:DNOS] closed unchanged at 978 dinars as 300 shares changed hands.
Aerodrom Nikola Tesla [BEL:AERO] was also flat, at 1,900 dinars, with only 6 stocks trading.
The broader BELEXline, a free-float market capitalisation weighted index, also rose, closing 0.10% higher at 2,215.56 points.
Total turnover on the Belgrade bourse jumped to 116 million dinars ($1.06 million/991,300 euro) on Friday from 2.8 million dinars on Thursday. Some 107 million dinars of Friday's total came from trading in government securities.
(1 euro = 117.021 dinars)