Sam Altman is betting big on SB Energy, a data-center developer planning one of the largest initial public offerings ever, but the company's success hinges almost entirely on OpenAI's ability to keep spending money at a massive scale. SB Energy announced its IPO filing on September 1, 2026, aiming to raise between $5 billion and $7 billion at an estimated market value exceeding $50 billion. The company is backed by heavyweight investors including SoftBank, Nvidia, and OpenAI itself, with Altman personally investing as well.

What Makes SB Energy's IPO So Risky?

SB Energy is asking investors to fund a company with virtually no revenue-generating assets in operation. In the first six months of 2026, the company reported just $138.7 million in sales, most of which came from changes in financial instrument values rather than actual customer payments. More striking, SB Energy currently operates zero data centers, despite planning to build 8.8 gigawatts of data-center capacity and 5.5 gigawatts of power projects.

The timeline for bringing these facilities online is lengthy. Of the 8.8 gigawatts of data-center capacity, only 0.8 gigawatts are actually under construction now, and new capacity could take 24 to 36 months to become operational. This means investors are essentially funding a company that won't generate meaningful cash flow for years.

Despite these challenges, SB Energy has secured a remarkable $439 billion sales backlog through contracts with future tenants. The company's prospectus explicitly warns investors about the concentration risk: "We are substantially dependent on OpenAI as a tenant and strategic partner, and any adverse change in its financial condition or willingness to perform its contractual obligations could materially and adversely affect our business".

How Does OpenAI's Financial Health Affect SB Energy's Future?

• Massive Operating Losses: OpenAI recorded a $20.9 billion operating loss in 2025, followed by a $9.3 billion loss in the first quarter of 2026 and a $12.3 billion loss in the second quarter when including stock compensation.
• Continuous Capital Raises Required: Because OpenAI burns through cash at such a rapid pace, the company must repeatedly return to capital markets for funding, despite raising $122 billion in March 2026.
• Delayed IPO Plans: Altman postponed OpenAI's planned initial public offering to 2027 because he could not secure a $1 trillion valuation for the company.

The interconnection between SB Energy and OpenAI creates a precarious situation. SB Energy has issued financial derivatives called warrants to OpenAI valued at $5.5 billion, which gain value if SB Energy's stock rises. Additionally, Nvidia has committed to invest $1.5 billion in SB Energy at the IPO price, and the chip maker is providing financial guarantees for a 10-gigawatt facility in Ohio that will be leased to OpenAI.

The prospectus also highlights potential conflicts of interest. Since both OpenAI and SoftBank are major investors in SB Energy, the board's ability to enforce lease obligations or pursue remedies against these tenants "may be constrained in ways that would not apply with respect to an unaffiliated tenant". While the company has taken steps to mitigate these conflicts, they remain inherent to the structure.

Why Does OpenAI's Survival Matter to the Entire AI Industry?

OpenAI's financial viability extends far beyond SB Energy. The company has committed to spending hundreds of billions of dollars with Oracle, and if OpenAI cannot fulfill its contracts, Oracle's share price could suffer significantly. Similarly, cloud provider CoreWeave depends on a large portion of its future revenue from OpenAI's existence.

If OpenAI begins struggling to raise capital, the effects could ripple across the AI sector. For a company like SB Energy that has yet to bring a single data center online, a "confidence event" in AI funding could halt the entire project. The dense interconnection among a relatively small number of AI companies means that OpenAI's continued existence is "existentially critical to AI as an industry and to many, though not all, companies in the sector".

Nvidia has effectively become what some analysts call the "central bank of AI," backstopping many AI deals by providing financial guarantees and direct investments when projects might not otherwise move forward. This arrangement allows companies like SB Energy and OpenAI to proceed with massive infrastructure buildouts despite their operating losses, but it also concentrates risk among a small group of players.

For investors considering SB Energy's IPO, the calculus is straightforward: you are wagering that AI funding can continue on its current trajectory for at least the next several years, that OpenAI will remain solvent and continue spending at scale, and that the company can successfully execute its ambitious construction timeline. Any disruption to these assumptions could significantly impact the investment.