South Korean stocks traded 0.39 percent lower late Thursday morning, as major banking firms and oil refiners widened losses, analysts said.
The benchmark Korea Composite Stock Price Index (KOSPI) slid 7.67 points to 1,956.28 as of 11:20 a.m.
Shinhan Financial Group, the 10th largest company by market cap, sank 2.4 percent, with leading oil refiner SK Innovation slumping 3 percent.
In contrast, tech giant Samsung Electronics edged up 0.3 percent, with auto parts maker Hyundai Mobis gaining 1.8 percent.
The local currency was changing hands at 1,099.70 won against the greenback, up 1.7 won from Tuesday's close.
The Seoul bourse was closed on Wednesday for International
Workers' Day. (Yonhap News)