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OpenAI IPO Delay Intensifies Market Test for SoftBank-Backed SB Energy’s $50 Billion Data Center Listing

September 17, 2026 at 23:12 EDT

Infra & Chips
Funding & M&A
Foundation Models

OpenAI's decision not to pursue a 2026 listing has made SB Energy's proposed Nasdaq debut a sharper public-market referendum on AI infrastructure financing. The SoftBank-backed developer is seeking a valuation of about $50 billion while its filing shows roughly $439 billion of contracted backlog and no operational data center capacity.

Sept. 18, 2026 · SoftBank-backed SB Energy

AI compute meets the IPO market

OpenAI is staying private for now, pushing more attention onto SB Energy's proposed listing as a public test of AI data center financing.

$50bn

target valuation

$439bn

contracted backlog

8.8

GW-IT signed capacity

$105bn

NVIDIA guarantee cap

Backlog towers over build cost

$439bnbacklog

$178bnestimated capex

Each block represents about $25bn, showing the scale of promised revenue against the buildout still required.

Why the structure matters

DemandOpenAI anchors leases

SupportNVIDIA backs part of Ohio

BuildCampuses must be delivered

Cash flowRevenue follows service readiness

Bull case

A rare listed route into OpenAI-linked compute demand, with long leases and large chipmaker support.

Risk case

No operating data centers yet, heavy tenant concentration and a capital-intensive construction schedule.

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