The SBITOP closed 0.16% higher at 585.38 points after falling 0.01% on Tuesday.
Four of the seven blue chips of the Ljubljana Stock Exchange (LJSE) closed lower and three rose on Wednesday.
Retailer Mercator [LJE:MELR] led the blue-chip gainers, rising 1.75% to 116 euro ($150).
Nova Kreditna Banka Maribor [LJE:KBMR] paced the blue-chip decliners, falling 4.24% to 1.13 euro. The stock was the most traded blue chip with 11,678 shares changing hands.
LJSE's total turnover fell to 1.1 million euro from 1.4 million euro on Tuesday.
($=0.7738 euro)