It is calculated and announced on the real-time basis in London and eight times a day in Tokyo, which covers 12 hours a day when Japanese stocks are actively traded. It has been calculated and announced since July 4, 1988. Divisors adjusted using Tokyo prices. Trading volume and trading value are the sum from January to December of the previous year at SEAQ International.
Market value is as at the end of year in Tokyo.
Stocks are ranked by these 3 indicators and sorted by the sum of ranks. First 50 stocks become new constituents.