Deepening tech selloff drags Asian stocks lower as South Korea and Japan markets sink

U.S. September CPI rose 3.7% year-on-year, above expectations, deepening a technology selloff that spread into Asia. South Korea's KOSPI plunged nearly 8% on Thursday, with Samsung Electronics and SK Hynix falling more than 11%. Japan's Nikkei 225 dropped 5%, as SoftBank Group, Tokyo Electron and other tech stocks broadly declined. U.S. equity index futures also moved lower.