Tokyo stocks tumbled Thursday at the close of trading Thursday, as key sectors including real estate and exporting companies declined, amid a rise in the value of the yen against the dollar. The 225-issue Nikkei Stock Average ended down 975.49 points, or 2.49 percent, from Wednesday at 38,126.33. The broader Topix index finished 90.57 points, or 3.24 percent, lower at 2,703.69. Source: Qatar News Agency