Shelly Group was also the day's most liquid stock, generating 75,586 levs ($42,094/38,646 euro) as 1,086 shares traded.
Total turnover on the main market of the Sofia bourse slid to some 2.71 million levs on Monday from 12.76 million levs on Friday.
A 0.30% climb in Advance Terrafund REIT [BUL:ATER] to 3.34 levs drove up the BGREIT. The index, which tracks seven real estate investment trusts, ended the session 0.06% higher at 190.18 points.
The BEAMX index, which tracks the ten most highly capitalised growth companies, advanced by 0.60% to 97.38 points. It was spurred on by venture capital fund Webit Investment Network [BUL:WIN], which rose by 2.68% to 0.765 levs.
The BGTR30 index, in which companies with a free float of at least 10% have equal weight, closed unchanged from Friday's trading session, at 810.65 points.
(1 euro = 1.95583 levs)