South Korean shares opened weaker on Wednesday on losses in tech and other blue chips.

The benchmark Korea Composite Stock Price Index  shed 9.24 points, or 0.49 percent, to 1,880.40 in the first 15 minutes of trading.

Tech shares led the decline, with market behemoth Samsung Electronics losing 1.88 percent and top chipmaker SK hynix moving down 3.36 percent. LG Electronics shed 1.46 percent.

Carmakers also opened weaker, with No. 1 Hyundai Motor sliding 0.71 percent and Hyundai Mobis stepping down 2.65 percent. Kia Motors lost 0.41 percent.

The local currency was trading at 1,209.60 won against the U.S. dollar as of 9:15 a.m., down 3.7 won from the previous session's close. (Yonhap)