The Nikkei Stock Average fell 130.18 yen, or 0.20%, to 66,131.98 on August 27 as the initial boost from Nvidia's better-than-expected earnings faded and semiconductor shares faced selling, while TOPIX rose 3.68 points to 4,114.70 for a sixth consecutive advance. On August 28, the Nikkei opened down 27.49 points at 66,104.49, rose more than 600 points in the morning and ended that session at 66,682.88, up 550.90 points, with TOPIX gaining 35.16 points to 4,152.38. In afternoon trading, the Nikkei reached an intraday high of 66,842.82, up 710.84 points, before easing to around 66,550, approximately 420 points above the previous close shortly after 12:47 p.m. Artificial-intelligence and semiconductor shares led the rebound after the Nasdaq rose 1.57% and the Philadelphia Semiconductor Index gained 2.33%, although a yen near 159.40 per dollar, firm crude oil futures, higher U.S. long-term rates and profit-taking risks in the upper 66,000 range limited gains. Advantest, Recruit Holdings and Taiyo Yuden supported the index, while Kioxia, Fast Retailing and Fujikura weighed on it. Investors remained focused on semiconductor conditions, currency movements, Japanese and U.S. interest rates, tariffs and Federal Reserve policy signals from Jackson Hole; reports differed on whether the scheduled speaker was Fed Governor Waller or Federal Reserve Chair Warsh.