SB Energy, a SoftBank Group unit developing data centers and energy infrastructure, plans to sell up to $500 million in new shares to Japanese investors alongside its planned U.S. listing. The proceeds are intended for general operating costs related to data centers, power generation and associated infrastructure projects. Reuters previously reported that SB Energy could seek a valuation of as much as $50 billion, though its filing did not disclose the size of the U.S. IPO. SoftBank Group shares rose 8.1% to 6,314 yen on Tuesday, recovering from an 11% decline in the prior session after OpenAI said it would not seek a 2026 IPO. Nvidia has committed $1.5 billion in a private placement at SB Energy's IPO price, while OpenAI holds warrants worth about $5.5 billion.