(Updates prices at midday recess)

By Kevin Buckland

TOKYO, Nov 11 (Reuters) - Japan's Nikkei share average

rose on Tuesday, with tech shares leading the advance after Wall

Street peers rallied overnight on optimism for an imminent end

to the U.S. government shutdown.

The tech-heavy Nikkei entered the midday trading

recess up 0.4% at 51,131.28, and earlier touched a one-week high

of 51,513.16.

Artificial intelligence-focused startup investor SoftBank

Group jumped 3%, single-handedly contributing 131 index

points of the Nikkei's total 220-point advance. The company will

report earnings after the close of trading.

Under the surface, though, the Nikkei was split, with only

90 of its 225 components rising, 134 falling, and one trading

flat.

The broader Topix added 0.2% to 3,323.18.

"Chip- and data-center stocks certainly stand out," said

Maki Sawada, a strategist at Nomura Securities.

"But even within that group, there are exceptions."

The split between gainers and losers "shows that there's no

single, big driving force, and some traders are taking the

opportunity to lock in profits", she said.

The Nikkei rallied to an all-time high of 52,636.87 a week

ago, powered by both the global fervor over AI and hopes for

fiscal stimulus under new Japanese Prime Minister Sanae

Takaichi.

On Tuesday, chip-making machinery manufacturer Tokyo

Electron ( TOELF ) added 0.8%. Chip-maker Renesas

advanced 2.8%.

Chip-testing equipment maker Lasertec ( LSRCF ) jumped 2.8%,

but larger peer Advantest ( ADTTF ) eased 0.8%.

Sony Group ( SONY ), which will also report earnings after

the close of trading, added 0.4%.