TOKYO, Feb. 3 (Xinhua) -- Tokyo stocks eked out gains on Friday as the Bank of Japan's surprise announcement of an emergency bond-buying operation sent the yen lower versus its U.S. counterpart and gave exporter-linked issues a boost.
The 225-issue Nikkei Stock Average edged up 3.62 points, or 0.02 percent, from Thursday to close the day at 18,918.20.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, added 4.58 points, or 0.30 percent, to finish the day at 1,514.99.
Notable issues that advanced by the close of play comprised nonferrous metal, bank and insurance-linked stocks.
Trading volume on the main section totaled 2,116.97 million shares, marginally lower than Thursday's volume of 2,128.18 million shares and advancing issues outpaced declining ones by 996 to 854 on the First section.
The turnover on the last trading day of the week was 2,628 billion yen (23.23 billion U.S. dollars).
