Softbank's stock price soars, boosted by news of OpenAI and SB Energy's IPO.

SoftBank's stock price surged nearly 20%, OpenAI is reportedly preparing to submit its IPO filing in the coming weeks and plans to go public at some point in the fall. SoftBank Group holds over 10% of OpenAI. In addition, its investment in the digital infrastructure company SB Energy plans to submit a confidential registration statement for its upcoming IPO in the United States, also boosting SoftBank Group's stock price. After Nvidia announced strong earnings, the overall Japanese technology stocks rose, with chip-related stocks performing well.