The main indices tracking the TSE are the Nikkei 225 index of companies selected by the Nihon Keizai Shimbun (Japan's largest business newspaper), the TOPIX index based on the share prices of First Section companies, and the J30 index of large industrial companies maintained by Japan's major broadsheet newspapers.
Ninety-four domestic and 10 foreign securities companies participate in TSE trading. See: Members of the Tokyo Stock Exchange