Atlantic's shares lost 2.27% to a close of 1,290 kuna, ZSE's daily report indicated.
There were no gainers among ZSE's ten blue chips for the day, with four of them closing lower and the remaining six ending the session flat.
Trading in the preferred shares of diversified conglomerate Adris Grupa [ZSE:ADRS2] generated the single largest turnover of 7.2 million kuna, more than half of Thursday's total, with the stock price closing flat at 367 kuna.
ZSE's total trading turnover plunged to 13.3 million kuna ($2.2 million/1.8 million euro) on Thursday from 73 million kuna on Wednesday, when a block deal in the shares of flour milling company Cakovecki Mlinovi [ZSE:CKML] contributed 60 million kuna to the total.
The bourse's 25-share benchmark CROBEX index lost 0.70% to 1,701.78 after dropping 0.63% on Wednesday.
The narrower of the ZSE's two blue-chip indices, the CROBEX10, which tracks the leading companies in terms of free float, market capitalisation and liquidity, fell 0.57% to 1,062.40 on Thursday after going down 0.68% on Wednesday.
(1 euro = 7.53034 kuna)