By Sam Nussey and Anton Bridge TOKYO (Reuters) -SoftBank CEO Masayoshi Son's plan to invest billions in AI in the United States shows one way to handle the new Trump administration: go big and deal with the details later.

Tokyo stocks were sharply higher Wednesday morning, led by rises in SoftBank Group following news it would be part of a massive artif

Tokyo stocks ended sharply higher Wednesday, driven by gains in semiconductor-related shares following news that SoftBank Group will

Masayoshi Son founded SoftBank in 1981. It has invested millions in some of Silicon Valley's biggest tech companies.

SoftBank Group shares jumped after the company and ChatGPT-maker OpenAI announced plans to invest up to half a trillion dollars in artificial-intelligence infrastructure in the U.S. Shares rose 8.8% to 10,060 yen, or equivalent to $64.69, on Wednesday in Tokyo, after climbing as much as 9.2% earlier, to their highest level since July.

OpenAI and Japanese conglomerate SoftBank will each commit $19 billion to fund a joint venture to develop data centers for artificial intelligence in the U.S., the Information reported on Wednesday, citing OpenAI CEO Sam Altman speaking to colleagues.

Asian shares were mixed on Thursday after China rolled out more moves to try to boost its lagging stock markets by raising confidence that prices will rise. Officials in Beijing said pension funds and mutual funds would be required to increase purchases of shares,

SoftBank and OpenAI are backing a significant AI infrastructure project in the US, which includes major investments, new technology partnerships, and job creation.

Masayoshi Son, the billionaire founder and CEO of SoftBank, the Japanese media technology conglomerate, is often cast as a dreamer, financial engineer, and speculator. But his career — which has spanned the launch of the personal computer and internet,

Japan's Nikkei share average rose on Thursday as SoftBank Group and other technology stocks tracked their U.S. peers higher for a second straight session, while investors awaited the Bank of Japan's monetary policy decision due on Friday.

Tokyo stocks ended higher Thursday as technology issues rose on hopes for robust investment and a weaker yen lifted exporters, but a cautious mood prevailed amid uncertainty over U.S. tariff policy. The 225-issue Nikkei Stock Average ended up 312.

SoftBank Group Corp. and OpenAI each plan to commit $19 billion of capital to Stargate, the $100 billion US AI endeavor President Donald Trump unveiled this week, the Information reported.