Japan’s Nikkei Stock Average fell 8.89 points to 63,484.10 on September 15, extending its decline to a third session, while the Tokyo Stock Price Index, or TOPIX, dropped 21.05 points to 4,037.16. The Nikkei had risen as much as 589.37 points, or 0.93%, to 64,082.36 during morning trading as investors bought AI and semiconductor shares after a three-day rout. SoftBank Group rose more than 7% intraday and closed 9.13% higher after plunging 10.7% in the previous session on speculation that portfolio company OpenAI might delay a U.S. initial public offering. Kioxia Holdings, Murata Manufacturing, Advantest and Tokyo Electron also recovered, although some AI and semiconductor shares later came under renewed selling. Rising oil prices, bond yields and uncertainty ahead of Federal Reserve and Bank of Japan meetings weighed on the afternoon market. U.S. stocks had finished well above their session lows as oil reversed earlier gains, but the broader recovery remained fragile amid concerns about AI spending, inflation, fiscal pressures and corporate earnings.