Asian shares rose on Thursday, driven by strong gains in technology stocks in Japan and South Korea, as oil prices fell amid signs of easing geopolitical tensions.

Investor sentiment was lifted by a surge in major U.S. chipmakers following stronger-than-expected earnings and outlooks. Qualcomm’s shares jumped 12 percent in after-hours trading after raising its annual revenue forecast to $40 billion and unveiling a new data centre chip. Micron Technology also climbed nearly 16 percent after upgrading its forecast and beating analyst expectations.

These gains spilled over into Asian markets, where Tokyo’s Nikkei 225 rose 4.1 percent to 71,995.59. Technology stocks led the rally, with Tokyo Electron gaining 7.1 percent and Advantest surging 13.4 percent.

South Korea’s Kospi index reached a record high, climbing 5.9 percent to 8,968.22. Semiconductor giants Samsung Electronics and SK Hynix advanced 5.4 percent and 11.6 percent respectively.

Elsewhere in the region, gains were more modest. Taiwan’s Taiex rose 0.8 percent and India’s Sensex edged up 0.6 percent. China’s Shanghai Composite added 0.4 percent, while Hong Kong’s Hang Seng fell 1.4 percent. Australia’s S&P/ASX 200 declined 0.5 percent.

On Wall Street, markets closed mixed on Wednesday, with losses in major technology stocks weighing on sentiment. The S&P 500 slipped 0.1 percent, while the Nasdaq Composite dropped 0.4 percent. The Dow Jones Industrial Average, less heavily weighted towards technology stocks, rose 10.4 percent.