Nikkei 225 - Wikipedia
https://en.wikipedia.org/wiki/Nikkei_225From Wikipedia, the free encyclopedia The Nikkei 225, or the Nikkei Stock Average (日経平均株価, Nikkei heikin kabuka), more commonly called the Nikkei or the Nikkei index ( / ˈnɪkeɪ, ˈniː -, nɪˈkeɪ / ), is a stock market index for the Tokyo Stock Exchange (TSE). It has been calculated daily by the Nihon Keizai Shimbun ( The Nikkei) newspaper since 1950.