Meanwhile, the BGBX40, which tracks the 40 most traded shares on the Sofia bourse, dipped by 0.46% to 168.55 points, while the BGTR30, in which companies with a free float of at least 10% have equal weight, shrank by 0.42% to 848.07 points.
The fall in Sopharma Buildings also pressed the BGREIT, which tracks seven real estate investment trusts. The index erased 0.67% to 189.22 points.
In comparison, the BEAMX index, which tracks the ten most highly capitalised growth companies, went up 0.29% to 100.33 points. It was buoyed by a 12.50% surge in electric vehicle manufacturer Sin Cars Industry [BUL:SIN] to 0.45 levs.
Total turnover on the main market of the Sofia bourse slid to some 4.71 million levs ($2.58 million/2.41 million euro) on Tuesday from 7.23 million levs on Monday.
Eleven Capital was the day's most liquid stock, generating 119,773 levs as 7,142 shares traded.
(1 euro = 1.95583 levs)