Ask what Korea is talking about.

Asian markets fell sharply on Oct. 30 as U.S. big tech earnings and AI investment concerns triggered a selloff. Korea's KOSPI plunged 3.48% to close at 5,730.74, with the KOSDAQ down 3% (KBS World). The Korea Times reports the KOSPI fell over 3% Friday, led by Samsung Electronics and SK hynix, while Yonhap notes Seoul shares dipped over 3% on tech losses. Business Korea says the KOSPI opened sharply lower below 6,000 and closed down 3.5%, barely holding 5,700, amid global tech rout and Fed tightening worries. The Korea Times also reports the KOSPI sank over 5% late Friday morning, and that the KRX activated a sell-side sidecar for the KOSPI on the sharp fall. Maeil Business reports Asian markets, including Japan's Nikkei (down 2%) and Taiwan, fell together on AI profitability concerns. Korean investors reacted with alarm, as Hankyung reports foreigners dumped 1.6 trillion won, calling it a 'scream' over the U.S.-originated bad news.