1A major Japanese stock market index (Nikkei 225) representing the average price of 225 large companies listed on the Tokyo Stock Exchange.
今日の日経平均株価は為替の影響で下落した。
Today's Nikkei Stock Average fell due to currency (exchange rate) effects.
投資家は日経平均株価の動きに注目している。
Investors are paying attention to movements in the Nikkei Stock Average.
日経平均株価が年初来高値を更新した。
The Nikkei Stock Average hit a year-to-date high.