The Topix index also opened with a decline of 0.1% to 2,911.65 points, five minutes after trading commenced at 9:05 a.m. local time (1:05 a.m. in Lisbon).
The Nikkei index represents the unweighted average of the 225 leading stocks on the Tokyo Stock Exchange, while the Topix index aggregates the values of the 1,600 largest listed companies.
