The Nikkei 225 Index fell 1.3% to around 50,220 while the broader Topix Index lost 0.5% to 3,297 on Friday, erasing gains from the previous session and tracking a tech-led selloff on Wall Street overnight amid renewed concerns about lofty AI valuations and signs of a slowing US labor market. Major US AI stocks slumped, including Nvidia, AMD, Palantir, Microsoft, and Broadcom. In Japan, SoftBank Group (-7.6%) led the decline due to its heavy exposure to AI investments, followed by Advantest (-6.4%), Fujikura (-3.1%), and Disco Corp (-4.3%). Industrial and consumer names also weakened, with notable losses from Mitsubishi Heavy Industries (-2.4%), IHI Corp (-4.1%), Ajinomoto (-2.5%), and Sanrio (-1.1%). Meanwhile, data showed Japan’s household spending rose less than expected in September. For the week, the Nikkei and Topix are on track to lose about 4% and 1%, respectively.