The SBITOP tumbled 1.56% to 602.13 points after losing 0.97% on Friday.
Three of the seven blue chips of the Ljubljana Stock Exchange (LJSE) closed lower, two gained ground and as many ended flat.
Nova Kreditna Banka Maribor [LJE:KBMR] led the SBITOP decliners and was the most traded blue chip with 33,048 shares changing hands. The stock closed 4.17% down at 1.495 euro ($1.94).
Telekom Slovenije [LJE:TLSG] led the blue-chip advancers, adding 1.24% to 81.5 euro.
LJSE's total turnover fell to 820,550 euro from 1.6 million euro on Friday.
($=0.7721 euro)