TOKYO, Feb. 19 (Xinhua) -- Tokyo stocks advanced Wednesday morning on investor buybacks after the market's four day losing streak, with sentiment bolstered by a comparatively weaker yen lifting exporter issues.

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The 225-issue Nikkei Stock Average rose 165.80 points, or 0.71 percent, from Tuesday to 23,359.60.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, added 8.96 points, or 0.54 percent, at 1,674.67.

Precision instrument, rubber product and marine transportation-oriented issues comprised those that gained the most by the morning break.