An electronic board showing the Korea Composite Stock Price Index at a dealing room of the Hana Bank headquarters in Seoul on Tuesday. (Yonhap)
An electronic board showing the Korea Composite Stock Price Index at a dealing room of the Hana Bank headquarters in Seoul on Tuesday. (Yonhap)

Seoul shares opened higher Tuesday after a mixed close on Wall Street as investors await major earnings reports amid US tariff uncertainties.

The benchmark Korea Composite Stock Price Index rose 0.49 point, or 0.02 percent, to 3,211.30 in the first 15 minutes of trading.

Overnight, the Dow Jones Industrial Average fell 0.04 percent, while the tech-heavy Nasdaq composite rose 0.38 percent.

Investors are keeping a close eye on any new developments in US tariff policies as Trump may announce more unilateral tariff rates before Aug. 1, analysts said.

They also await second-quarter corporate earnings results, due this week, for clues about the market's future direction.

In Seoul, large-cap stocks were mixed.

Market behemoth Samsung Electronics rose 0.44 percent, and leading home appliance maker LG Electronics climbed 1.96 percent.

LG Chem jumped 3.48 percent, leading battery maker LG Energy Solution gained 1.96 percent, and state-run utility Korea Electric Power Corp. climbed 3.36 percent.

Among decliners, chip giant SK hynix fell 0.83 percent, top carmaker Hyundai Motor declined 0.24 percent, and leading shipbuilder HD Hyundai shed 0.22 percent.

Defense firm Hanwha Aerospace lost 0.11 percent, and plant builder Doosan Enerbility dropped 3.51 percent.

The local currency was trading at 1,384.65 won against the US dollar at 9:15 a.m., up 3.55 won from the previous session. (Yonhap)