Cinkarna Celje's shares ended the session at 21.0 euro, down 4.55%, LJSE data showed.
Telekom Slovenije [LJE:TLSG] was the only blue-chip index member to close up on Wednesday. Its share price grew 0.83% to 61.0 euro.
The blue-chip SBITOP index ended at 1,222.94 points, down 0.40%. The SBITOP TR index, which also tracks dividend distribution, also dropped 0.40%, to 1,633.03 points.
Total daily regulated market turnover went up to 2.6 million euro ($2.8 million) on Wednesday from 1.1 million euro on Tuesday.
($ = 0.929 euro)