NIKKEI 225 Index components | values (JP9010C00002)
The Nikkei 225 (Japanese 日 経 225), short for Nikkei Heikin Kabuka (日 経 平均 株 価, German “Nikkei share price average”), is the Japanese leading index and the most important share index in Asia. It is one of several indices of the Nihon Keizai Shimbun (Nikkei) newspaper for measuring the development of the Tokyo Stock Exchange and is based on the prices of 225 public companies traded there.
The Nikkei 225 is a price-weighted price index, i. This means that it is calculated like the Dow Jones Index without taking dividends, subscription rights and special payments into account. The weighting is based on the nominal value of 50 yen, which is customary in Japan. In March 2011, the divisor for the overall index was 24.917. Shares with different par values and split shares are converted accordingly. Once a year, a decision is made as to which companies will be eliminated from the Nikkei index or added to the index. Adjustments due to the end of the listing (mergers, etc.) are carried out on an ongoing basis.
The index level is determined by adding up the market values. The weight of an index member results from the proportion of its share price in the sum of all share prices in the index. The calculation method leads to an overemphasis on stocks with a high numerical value. Correction factors are intended to smooth out the greatest distortions. Nevertheless, companies from the information technology and telecommunications sectors, which represent modern Japan, have only a low weighting. The heavyweights, on the other hand, include numerous industrial companies (mainly from the mining and transport sectors) due to the optically high price.
The Nikkei 225 is updated every 15 seconds on the Tokyo Stock Exchange during trading hours: Monday through Friday 9:00 a.m. to 11:30 a.m. and 12:30 p.m. to 3:00 p.m. local time. This corresponds to 1:00 a.m. to 3:30 a.m. and 4:30 a.m. to 7:00 a.m. CET or one hour later in CEST (Japan does not have daylight saving time).