The Story
SB Energy filed publicly for a US initial public offering on Tuesday, and told investors in the same document that it is substantially dependent on OpenAI.
The Redwood City company, controlled by SoftBank and backed by OpenAI and Nvidia, will trade on Nasdaq and Nasdaq Texas under the ticker SBE. The Wall Street Journal reported it is seeking $5 billion to $7 billion and could begin trading this month.
The risk factor is unusually direct. The filing says near-term revenues, project-level financing arrangements and development plans are significantly linked to OpenAI's continued performance under its lease and related agreements. OpenAI is both the largest tenant and an equity holder, and Sam Altman was an early personal investor. OpenAI appears 306 times in the S-1, against 325 mentions of SoftBank and 135 of Nvidia.
The financials show why that matters. SB Energy posted a net loss of about $3.2 billion on revenue of $139 million in the first half of 2026, against a $216 million loss on $83 million of revenue a year earlier. Almost all of that revenue came from its legacy solar and battery storage business. None of its data centres are operational, and the data centre business has produced no revenue at all.
Against that sits a contracted backlog of roughly $439 billion and close to nine gigawatts under contract. OpenAI has invested $500 million, matched by SoftBank under the Stargate initiative, and has signed 17 leases covering about eight gigawatts at a planned Ohio campus on 20-year terms. Two Texas campuses will add a combined 1.59 gigawatts.
Nvidia has committed $3 billion through two IPO-linked transactions, one of which allows it to buy shares at a 10 per cent discount to the offer price.
Why It Matters
The detail deserving more attention than the headline risk factor is the warrant structure.
OpenAI holds warrants in SB Energy valued at roughly $5.5 billion, up from $3.6 billion in January. They vest against SB Energy's post-IPO market capitalisation. The tenant's stake therefore becomes more valuable exactly when the landlord's stock prices well, and the tenant's lease commitments are what make that stock investable in the first place.
That is not an outside party validating demand. It is the anchor customer holding a direct financial position in the success of an offering its own contracts underwrite. The accounting makes the loop visible: part of the widening first-half loss comes from the rising value of those very warrants. SB Energy's reported loss grew because its tenant's stake appreciated.
The obligations run both ways as well. SB Energy has committed to buying at least $50 million of software and services from OpenAI by 2028, including ChatGPT Enterprise. The landlord is a customer of its tenant.
None of this is concealed. All of it sits in the prospectus, which is exactly where it belongs. But an investor reading the $439 billion backlog as independent demand should note how much of it traces back to a single counterparty that also holds equity, holds warrants, and today buys nothing that is operational.
SB Energy's S-1, on its concentration risk: near-term revenues, project financing and development plans are "significantly linked to OpenAI's continued performance under our lease and related agreements."
The Strategic Read
The other name worth watching in this filing is Nvidia's.
SB Energy says its ability to finance the Ohio development depends significantly on a residual value guarantee from Nvidia worth up to $105 billion. That is a version of the same instrument Nvidia paused for smaller cloud operators in late August, after its own employees raised antitrust concerns about the control provisions attached to it. Here it appears at far greater scale, attached to a company weeks away from a public listing, and this time the guarantee is what makes investment-grade financing possible rather than a revenue floor.
Whether the pause touches this arrangement is an open question the prospectus does not answer. What the filing does establish is that the AI infrastructure buildout has settled on a financing template: the anchor tenant takes equity and warrants, the chip supplier backstops the debt, and the sponsor lists the subsidiary to move capital expenditure off its own balance sheet. Bloomberg Intelligence made the last point in May, noting that shifting data centre funding into subsidiaries reduces SoftBank's parent-level liquidity pressure.
For India, the template matters more than the company does. Domestic data centre developers face the same wall this structure was built to climb, because lenders will not underwrite multi-gigawatt capital expenditure against demand that has not arrived. If SBE clears at $5 billion to $7 billion, this becomes the standard way AI infrastructure gets financed everywhere, including here. If it breaks, the wall gets higher.
One further risk factor deserves separate notice. SB Energy warns about community opposition, local moratoria and growing public resistance to AI infrastructure. Anthropic's coming prospectus is expected to carry a version of the same warning. Two AI-adjacent filings in a single month naming public backlash as a material risk is not a coincidence, and it is a new line item for anyone planning to put a data centre next to a town.
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