Energy and insurance group Eurohold Bulgaria [BUL:EUBG] paced the blue-chip decliners, losing 2.66% to 1.83 levs, in a trading volume of 22,854 shares.
Another blue-chip constituent, equipment maker M+S Hydraulic [BUL:MSH], declined 2.22% to 8.80 levs.
First Investment Bank, or Fibank, [BUL:FIB] emerged as the top SOFIX gainer after advancing 3.26% to 1.90 levs.
The losses in Eurohold Bulgaria and M+S Hydraulic also dragged down the BGTR30 index, in which companies with a free float of at least 10% have equal weight. The BGTR30 finished 0.12% lower at 716.29 points.
The BGBX40 index, which tracks the 40 most traded companies on the Sofia bourse, ticked down 0.36% to 136.97 points, on the back of a 3.30% loss in civil engineering contractor Trace Group Hold [BUL:T57] to 3.52% as well as the retreat in Eurohold Bulgaria and M+S Hydraulic.
The BGREIT, which tracks seven real estate investment trusts, declined 0.42% to 179.33 points as Bulgarian Real Estate Fund REIT [BUL:BREF] closed 1.94% lower at 2.02 levs.
Municipal utility Toplofikatsia Burgas [BUL:TPLB] was the most traded stock on Tuesday, generating a turnover of 169,920 levs with 106,200 shares traded. The shares closed flat at 1.60 levs.
Total turnover on the main market of the Sofia bourse continued to decline on the second day of the trading week, edging down to 589,524 levs ($313,874/301,418 euro) from 697,094 levs on Monday.
(1 euro = 1.95583 levs)