Asian stocks rise on AI gains; oil prices fall

Asian stocks mostly rose Tuesday, led by AI-related gains in Tokyo and Seoul, while oil prices fell. U.S. futures edged lower after Wall Street's rally ahead of major corporate earnings and central-bank decisions. South Korea's Kospi jumped 3.1%, with chipmakers SK Hynix and Samsung Electronics gaining on strong semiconductor demand. Tokyo's Nikkei 225 added 1.7%, boosted by Advantest and SoftBank. Hong Kong's Hang Seng slipped 0.6%, while Shanghai dropped 0.3%. U.S. markets rose Monday, with Nvidia up 2.4% after three losing weeks. Alphabet, Microsoft, and Amazon report earnings this week, offering insight into AI spending. The 10-year Treasury yield eased to 4.98%, with the Fed expected to hold rates steady Wednesday.