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SB Energy to sell up to $500 million in shares to Japan investors as part of US IPO

By Thomson Reuters Sep 14, 2026 | 8:33 PM

By Anton Bridge

TOKYO, Sept 15 (Reuters) – Data centre developer SB Energy, backed by SoftBank Group, will ​sell up to $500 million in ‌shares to Japanese investors as part of a public listing in the U.S., a filing showed on Tuesday.

The firm will issue ‌new ​shares to the ⁠Japanese investors, and the ⁠funds will be used for general operating costs for developing data centres, power generation and related infrastructure ​projects, the filing said.

The filing did not reveal the size of ⁠the U.S. IPO. SoftBank ⁠may seek a valuation ​of $50 billion for SB Energy, Reuters has ​reported.

Chipmaker Nvidia has committed to invest $1.5 ‌billion in a private placement at the IPO price, and OpenAI has been issued warrants worth roughly $5.5 ⁠billion, SB Energy reported in its investment prospectus, released earlier in September.

Investor enthusiasm for artificial intelligence ⁠has ‌prompted a wave of ⁠public listings in related firms ​this ‌year, with SpaceX listing in ​June and ⁠Anthropic preparing to list later this year.

Japanese investors secured $2.2 billion of SpaceX shares in its IPO.

(Reporting by Anton Bridge; Editing by Tom Hogue and ​Muralikumar Anantharaman)