S/ Hiroshiba Manabu, NTV reporter: Tokyo Metro shares hit an opening price of 1,630 yen, well above the offer price of 1,200 yen.   

Japanese subway operator Tokyo Metro’s shares debuted strongly on October 23 on the Tokyo Stock Exchange Prime market in Japan's biggest initial public offering in six years.  

Its shares closed at 1,722 yen at the end of the morning session.  

The market capitalization, calculated on the morning's closing price, exceeded 1 trillion yen. This was the largest new listing of the year in Japan.  

Half of the shares previously held 100 percent jointly by the Japanese and the Tokyo metropolitan governments were sold.  

All proceeds from the sale of the governments’ shares will be used to finance reconstruction of areas affected by the 2011 Great East Japan Earthquake.