With the tech-heavy Nasdaq up 2%, Japanese investors went on a shopping spree for their own laggard tech shares. They homed in on Toshiba, the country's largest chip maker, which shot up 29 yen or 6.5% to 478 yen. Hitachi surged 38 yen to 589, better by 7%. Tokyo Electron advanced 310 yen or 4.2% to 7750, while chip-testing equipment maker Advantest managed a 360 yen or 5% jump to 7550.