The Tokyo Stock Exchange..The Tokyo Stock Exchange (TSE) is Japan's primary stock market, founded in 1878. It hosts a variety of securities, including stocks, bonds, and investment trusts. The Nikkei Index, Japan's leading stock market index, tracks the performance of 225 large-cap companies listed on the TSE, serving as a key economic indicator. Japan economy.The Tokyo Stock Exchange..The Tokyo Stock Exchange (TSE) is Japan's primary stock market, founded in 1878. It hosts a variety of securities, including stocks, bonds, and investment trusts. The Nikkei Index, Japan's leading stock market index, tracks the performance of 225 large-cap companies listed on the TSE, serving as a key economic indicator. Japan economy.