TOKYO, Aug. 30 (Xinhua) -- The Nikkei stock index closed higher for an eighth straight day Thursday amid hopes that the United States and Canada would be able to strike a trade deal, with the yen's retreat adding support.
The 225-issue Nikkei Stock Average gained 21.28 points, or 0.09 percent, from Wednesday to close the day at 22,869.50.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, shed 0.46 point, or 0.03 percent, to finish at 1,739.14.
Mining, fishery, agriculture and forestry issues led notable gainers, while precision instrument, transportation equipment, and electric power and gas issues comprised those that declined the most by the close of play.