A worker removes masking tapes from the new signboard of Dai-Ichi Life Insurance Company Limited at its headquarters in Tokyo April 1, 2010. Japan's Nikkei average may dip on profit-taking on Thursday after its rise to an 18-month high this week, but any losses could be limited after the yen's fall to a three-month low against the dollar. One stock to watch is Dai-Ichi Mutual Life Insurance Co , which will be listed on the Tokyo Stock Exchange on Thursday after its $11 billion IPO, the world's biggest in two years. REUTERS/Issei Kato (JAPAN - Tags: BUSINESS)