SB Energy's Nasdaq IPO filing, targeting a $5-7 billion raise at roughly $50 billion valuation to fund AI data center and power infrastructure, faces significant hurdles from investor skepticism over its $50 billion-plus target amid cooling AI spending sentiment. The SoftBank-backed developer, with Nvidia committing $3 billion total and OpenAI as anchor tenant via warrants and leases, amended its S-1 in September to address SEC comments but delayed the roadshow from late September plans due to valuation gaps and execution risks, including zero operational data centers despite an $439 billion backlog. Traders weigh these factors against potential mid-to-late October momentum or further slippage, with year-end completion hinging on stabilizing market conditions for AI infrastructure plays.