SB Energy’s delayed IPO timeline, driven by investor skepticism over its $50 billion-plus valuation target, underpins the dominant 80.5% implied probability of no listing before January 2027. The SoftBank-backed developer filed its S-1 on September 1, 2026, positioning itself as an AI data center and power infrastructure provider with 8.8 GW of contracted capacity and a $439 billion backlog tied largely to OpenAI leases, yet it generates limited current revenue and faces $170 billion-plus in projected capex. Nvidia’s $3 billion commitment and OpenAI warrants provided some support, but premarketing revealed a valuation gap, prompting roadshow postponements and amended filings through late September. Traders appear to price in extended regulatory review, financing hurdles, and broader AI infrastructure spending caution as key swing factors before any potential launch.