The KOSPI opened on the 3rd at 6,650.33, up 87.61 points, or 1.33%, as U.S. stock gains and stabilized Treasury yields improved investor sentiment. The advance soon weakened, with the index edging higher below 6,600. Other corporations, presumed to be buying Samsung Electronics and SK Hynix shares, were net buyers, while foreign and institutional investors sold. Most large-cap stocks rose only modestly. U.S. Treasury yields had eased after weak private-sector employment data from ADP, a U.S. payroll processor, prompted expectations that the Federal Reserve would delay monetary-policy tightening. However, yields remain high, while unresolved U.S.-Iran tensions continue to support international oil prices and financial-market anxiety. Broadcom reported better-than-expected earnings, but its shares fell in after-hours trading after its future earnings forecast disappointed investors. Samsung Electronics and SK Hynix each opened about 1% higher. The U.S. Department of Commerce also raised the prospect of additional tariffs on imported semiconductors. U.S. Secretary of Commerce Howard Lutnick said on the 2nd that companies manufacturing in the U.S. would be exempt, while others would face tariffs on products entering the U.S. market. Cheong Wa Dae said it would closely cooperate with the U.S. to protect domestic companies.