South Korean semiconductor stocks advanced early on Sept. 22 after a broad overnight rally in U.S. AI and chip shares. Samsung Electronics rose 2.65% to 280,000 won ($205) and SK Hynix gained 2.94% to 1.923 million won ($1,408) as of 9:09 a.m. Meta Platforms’ personal AI agent Muse, released Sept. 8, reached No. 1 among free apps on Apple’s App Store, while AMD, Intel and Qualcomm posted sharp gains. The Nasdaq Composite reached a record closing high after rising 2.3%, and falling international oil prices and reduced external uncertainty provided additional support for equities.