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SoftBank Stock Jumps Over 9% on SB Energy IPO Plans, Nvidia Backing

SoftBank Group Corp. shares surged 9.1% to ¥6,372 in Tuesday's trading, staging a significant recovery driven by plans for a U.S. initial public offering of its energy unit and the resolution of a major refinancing risk.
IPO Filing and AI Alliances Drive Gains
The primary catalyst for the rally was an updated IPO filing by SB Energy, SoftBank’s data center and power infrastructure subsidiary. The filing outlines plans to sell up to $500 million in new shares to Japanese investors as part of a U.S. listing. According to reports cited by Investing.com, SoftBank may seek a valuation of approximately $50 billion for the unit.
Investor confidence in the offering was bolstered by significant commitments from key technology partners, underscoring the strategic importance of SoftBank's AI infrastructure initiatives:
- Nvidia has committed $1.5 billion to purchase shares at the IPO price in a concurrent private placement.
- OpenAI holds warrants in SB Energy valued at roughly $5.5 billion.
Refinancing Eases Balance Sheet Concerns
AdSeparately, SoftBank addressed a key balance-sheet concern by successfully securing new financing ahead of a looming deadline. The company's $25.9 billion credit line was due for repayment on September 15.
SoftBank has already secured a new $11.87 billion two-year facility from approximately 20 financial institutions. This new credit line exceeded its initial target of $10 billion, removing a significant near-term refinancing risk and improving the company's financial stability.
Market Context
Tuesday's rally marked a sharp reversal from Monday, when SoftBank shares plunged more than 10%. That decline followed comments from OpenAI CEO Sam Altman indicating the AI firm would not pursue a public offering in 2026, which disappointed investors who had anticipated a near-term liquidity event from SoftBank's substantial investment in the company. The conglomerate's strong performance on Tuesday helped lift Japan's broader Nikkei 225 index, which closed up 0.9%.
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