The two companies also drove down the BGBX40, which tracks the 40 most traded shares on the Sofia bourse, by 0.15% to 164.30 points. The biggest decliner in the index, however, was diversified group Synergon Holding [BUL:SNRG], which slumped 8.76% to 1.25 levs.
The BEAMX index, which tracks the ten most highly capitalised growth companies, dropped 1.24% to 97.87 points. It was mostly held back by electric vehicle manufacturer Sin Cars Industry [BUL:SIN], which erased 6.82% to 0.41 levs.
Meanwhile, the BGTR30 index, in which companies with a free float of at least 10% have equal weight, inched up 0.01% to 808.09 points. The losses at CCB and Shelly Group were offset by a 2.63% gain in the Bulgarian Stock Exchange [BUL:BSE] to 15.60 levs.
A 0.78% climb in Bulgarian Real Estate Fund REIT [BUL:BREF] to 2.60 levs lifted the BGREIT. The index, which tracks seven real estate investment trusts, grew by 0.09% to 191.57 points.
Galata Investment Company [BUL:GTH] generated the majority of the day's turnover, or some 3.6 million levs ($2 million/1.8 million euro), after 1.41 million shares traded. The stock closed flat at 2.56 levs.
Total turnover on the main market of the Sofia bourse came in at roughly 6.36 million levs on Monday.
(1 euro = 1.95583 levs)