The BEAMX index, which tracks the ten most highly capitalised growth companies, leapt 0.98% to 97.70 points, following an 11.21% surge in biometric identification security systems developer Biodit [BUL:BDT] to 1.19 levs.
In contrast, the BGBX40, which tracks the 40 most traded shares on the Sofia bourse, inched down 0.01% to 172.53 points. The index was held back by diversified group Synergon Holding [BUL:SNRG], which dropped 7.69% to 1.20 levs, and First Investment Bank, or Fibank, [BUL:FIB], which shed 3.96% to 4.36 levs.
Fibank was also the biggest decliner in the BGTR30. The index, in which companies with a free float of at least 10% have equal weight, erased 0.33% to 854.34 points.
The BGREIT index, which tracks seven real estate investment trusts, ended the session 0.18% lower at 190.59 points. It was impacted by a 0.89% slip in Advance Terrafund REIT [BUL:ATER] to 3.35 levs.
Total turnover on the main market of the Sofia bourse fell to 507,852 levs ($282,562/259,660 euro) on Tuesday from 636,221 levs on Monday.
The day's highest turnover, at 199,000 levs, was generated by diversified group Republic Holding [BUL:HREP] after 100,000 shares changed hands. The stock closed flat at 1.99 levs.
(1 euro = 1.95583 levs)