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

South Korean stocks snapped a three-session winning streak Thursday as investors locked in profits amid eased tariff woes. The local currency rose sharply against the US dollar.

The benchmark Korea Composite Stock Price Index fell 19.21 points, or 0.73 percent, to close at 2,621.36.

The index had risen from Monday to Wednesday on optimism driven by a trade agreement between the United States and China earlier this week.

Trade volume was moderate at 333.4 million shares worth 7.13 trillion won ($5.13 billion), with losers beating winners 592 to 296.

Institutions led the decline, dumping a net 385.8 billion won, while offshore investors bought a net 264.4 billion won and individuals scooped up a net 71.7 billion won.

Most major shares ended lower across the board.

Chipmakers were among the biggest losers as Samsung Electronics fell 0.17 percent to 57,300 won, and SK hynix lost 2.67 percent to 200,500 won.

Top carmaker Hyundai Motor sank 2.13 percent to 192,900 won, and its sister Kia dropped 1.3 percent to 91,200 won.

Leading pharma Celltrion declined 0.52 percent to 153,500 won, and instant noodle producer Nongshim dipped 1.66 percent to 415,000 won.

However, retail giant Shinsegae rose 2.06 percent to 168,400 won after its Chairman Chung Yong-jin met with US President Donald Trump in Qatar.

The local currency was quoted at 1,394.5 won against the greenback at 3:30 p.m., up 25.7 won from the previous session.

The won has been on a steep rise since Wednesday evening following news reports that South Korean and US officials held face-to-face discussions about their foreign exchange market policies last week. (Yonhap)