TOKYO, Oct 29 (Reuters) - Japan's Nikkei share average

rose to a record high on Wednesday, as investors drew confidence

from Wall Street's overnight strength on optimism surrounding

investments in the artificial intelligence sector.

The tech-heavy Nikkei 225 Index jumped 1.3% to

50,867.58. The broader Topix edged 0.03% higher.

All three major U.S. stock indexes closed at record highs

after Nvidia ( NVDA ) said it will build artificial intelligence

supercomputers for the U.S. energy department.

Shares of Microsoft ( MSFT ) jumped after the tech company

reached a deal that permits OpenAI to restructure into a public

benefit corporation while giving Microsoft ( MSFT ) a 27% stake in the

ChatGPT maker.

The largest percentage gainers in the Nikkei were chip

sector heavyweights Advantest ( ADTTF ), up 15.5%, followed by

Lasertec ( LSRCF ), which jumped 5.9%.

The largest losers were Nidec ( NNDNF ) down 4.5%, followed

by SHIFT, which lost 4.1%.

A firmer yen, however, acted as a headwind for most

companies. There were 52 advancers in the Nikkei index against

173 decliners.