Overnight, major U.S. shares slid after Trump said 25 percent tariffs on goods from Mexico and Canada will take effect as planned on Tuesday, sparking fears of a global trade war.
The S&P 500 dropped 1.76 percent, and the tech-heavy Nasdaq tumbled 2.64 percent, while the Dow Jones Industrial Average declined 1.48 percent.
In Seoul, big-cap shares started mixed.
Samsung Electronics fell 0.18 percent, and SK hynix decreased 1.74 percent.
LG Energy Solution lost 1.28 percent, and Hyundai Motor edged down 0.16 percent.
Samsung Biologics and Celltrion jumped 2.06 percent and 4.18 percent, respectively.