Following a dual boost from the OpenAI and SB Energy IPO plans, SoftBank's stock price soared by nearly 20%.

BlockBeats News, May 21st: Boosted by news of OpenAI planning to submit an IPO application, SoftBank Group's stock price surged nearly 20% in early Tokyo trading.

On the same day, SB Energy, the second company SoftBank has invested in and that develops energy infrastructure for data centers, announced it would confidentially submit a US IPO registration statement.

SoftBank has a close capital relationship with OpenAI, holding approximately 13% of the shares and having made cumulative investments of around $64.6 billion through the Vision Fund. Insiders revealed that OpenAI plans to submit its IPO application in the coming weeks, aiming to go public this fall.