Japanese share prices rose 1% on Wednesday although investors remain cautious about movement in US share prices.

"Concerns over the movement of the New York market tonight grew gradually stronger," a Chuo Securities broker said, citing the volatile trend on Wall Street.

The 225-issue Nikkei average rose 151.21 points to finish at 14,986.62.

"The downside remains firm on bargan-hunting by foreign investors at lower levels," one broker said.

"Share prices were supported by continued buying from foreign investors, with public funds seen as modest buyers as well."

Export-led high-tech stocks and pharmaceuticals led the gains on increasingly selective buying.

Among high-tech leaders, Tokyo Electron rallied 200 yen or 4.65% to finish at 4,530 yen and TDK firmed 20 yen to 9,970 yen.

Microchip makers were bought with Hitachi ahead 20 yen at 750 yen and Toshiba gained 20 yen to 700 yen.

Sony also gained 60 yen to finish at 9,100 yen, reversing earlier declines.

Takeda Chemical Industries hit a record high of 4,380 yen before closing up 80 yen at 4,330 yen.