Nikkei edges up as yen sags, caution before ECB caps gains
TOKYO, Jan 22 (Reuters) - Japanese shares edged up on Thursday as the yen sagged versus the dollar after surging the previous day, although caution ahead of the closely-watched European Central Bank policy meeting firmly later in the day capped gains. Upcoming domestic corporate earnings announcements also added to the wait-and-see mood. The Nikkei ended 0.3 percent higher at 17,329.02. The broader Topix slipped 0.1 percent to 1,389.43 and the JPX-Nikkei Index 400 shed 0.1 percent to 12,631.01. (Reporting by Shinichi Saoshiro; Editing by Eric Meijer)
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