SB Energy's planned IPO faces headwinds from investor pushback on its targeted $50 billion-plus valuation, despite Nvidia's $3 billion commitment and OpenAI's major tenant and warrant position. The SoftBank-backed firm filed its S-1 in early September to fund gigawatt-scale AI data centers and power infrastructure, then amended it later in the month to address SEC comments on disclosures. No facilities are operational yet, and the company reported widening losses alongside a large but unproven revenue backlog tied to AI compute demand. Recent reports indicate a shift from a late-September roadshow toward mid-to-late October or beyond, pending full SEC clearance and improved pricing feedback. Market sentiment reflects caution over execution timelines in the competitive AI infrastructure sector amid broader questions about sustained spending.