Nikkei Average hits 31-year high

Tokyo's benchmark stock index jumped to its highest intraday level since August 1990 during early trading on Tuesday, boosted by reports of progress in vaccine development.

The 225-issue Nikkei Average ended the morning session at 30,562, up 115 points, or 0.38 percent, from Monday's close.

Market sources say Japan's progress with coronavirus vaccinations is prompting investors to buy across a wide range of sectors.