Nscale, a UK-based AI cloud provider racing toward a US stock market listing, filed its S-1 registration statement on September 18, 2026, with one notable omission. An S-1 is the registration document a company must file with the US Securities and Exchange Commission before its shares can be offered to American public investors, and it puts the issuer's financials and risk factors under outside scrutiny ahead of any listing. The filing disclosed that a single unnamed customer accounted for 73% of the company's $33 million in 2025 revenue. It did not, however, identify that customer as ByteDance, the Beijing-headquartered parent company of TikTok.

Subsequent reporting filled in the gap. ByteDance has been renting access to 2,304 Nvidia B200 GPUs housed at Nscale's Glomfjord data center in Norway, a relationship that began in May 2025 and was partly underwritten by a $105 million loan from Macquarie. For a company seeking a valuation of $30 billion to $35 billion on the New York Stock Exchange, having roughly three-quarters of revenue flow from a single entity subject to intense US-China regulatory scrutiny is a significant complication.

The numbers tell two stories

Nscale's growth trajectory is striking. The company posted $33 million in total revenue for 2025, then reported $140.6 million for the first half of 2026 alone, translating to 1,252% year-over-year revenue growth.

Alongside that growth sits a $1.02 billion net loss for the first half of 2026. ByteDance's share of revenue, while declining from 73% in 2025, still represented 52% of the H1 2026 total.

Nscale projects that ByteDance's revenue share will dip below 20% in 2026 as contracts with Microsoft and Anthropic ramp up. The company says its total contracted value exceeds $100 billion. Both figures are the company's own projections, and both can be checked against future disclosed results as the listing process advances.

From mining to AI cloud

Nscale's origin story adds another layer. The company spun off from Arkon Energy in early 2024, pivoting from cryptocurrency mining operations to AI cloud infrastructure, a transition other mining-rooted operators have also made since mining sites are built around the industrial-scale power that GPU clusters require.

Since the spinoff, Nscale has raised capital aggressively. A March 2026 Series C round valued the company at $14.6 billion, and it has secured $3.1 billion in convertible notes. Among those note investors is Nvidia itself, the maker of the B200 chips at the center of the ByteDance arrangement, which contributed $1 billion.

The company is incorporated in the Cayman Islands but headquartered in the UK, and it plans to list on the NYSE under the ticker NSCL. The proposed valuation of $30 billion to $35 billion would represent roughly a 2x to 2.4x jump from the Series C price just months earlier.

The ByteDance problem

Nscale's S-1 identified the concentration risk in percentage terms but left the customer unnamed. This is permissible under SEC rules, which require disclosure of material customer concentration but do not always mandate naming the customer.

The structure of the arrangement is itself notable. ByteDance accesses Nvidia's B200 chips through Nscale's Norwegian data center, effectively routing around direct US export restrictions that limit the sale of advanced AI chips to Chinese companies. Norway is not subject to the same export controls as the United States, though Washington has been steadily pressuring allied nations to tighten their chip export policies, a dynamic that keeps offshore GPU hosting arrangements for China-linked customers within the scope of that ongoing policy debate.

The $105 million Macquarie loan backing the Glomfjord facility adds financial leverage to an already concentrated bet. What happens next follows the standard US listing sequence: SEC staff review of the S-1, any resulting amendments, then pricing. The details that would sharpen the picture, including whether the unnamed customer is eventually identified and how quickly the Microsoft and Anthropic contracts shift the concentration math, will surface in the company's own subsequent filings and reported results.