• Short sellers made an estimated $806 million in paper profits on Wednesday when CoreWeave shares tumbled 15.5%.
  • The selloff was driven by surging bond yields and credit-market anxiety over the company’s debt-funded AI infrastructure buildout, not a drop in demand for its services.
  • Shares rebounded 5.94% on Thursday, but borrowing costs remain elevated, with its 2031 bonds yielding 15.78%.

A Paper Windfall Amid Rising Yields

Short sellers betting against CoreWeave Inc. pocketed roughly $806 million in paper profits on Wednesday, according to data from ORTEX, as the AI cloud provider’s stock plunged 15.5%. The sharp decline came as investors zeroed in on the company’s mounting borrowing costs, with its 2032 bonds yielding around 15%—a level that signals deep concern about the economics of its debt-fueled expansion.

The selloff was not triggered by any sudden drop in demand for CoreWeave’s GPU computing services. Instead, it reflected a crisis of confidence in the company’s ability to service its obligations while continuing to pour billions into AI chips and data centers. By Thursday, the stock had recovered some ground, closing at $69.69, up 5.94%. But the credit markets offered little comfort: the yield on CoreWeave’s 2031 bonds climbed to 15.78%, and five-year credit-default-swap spreads—the cost of insuring against default—briefly blew past 1,140 basis points, a zone typically associated with distressed borrowers.

“Misunderstand and Act Irrationally”

In an internal memo to employees, CEO Michael “Mike” Intrator pushed back against the market’s reaction, arguing that CoreWeave’s contracted revenue backlog more than covers its debt obligations. “Markets can sometimes misunderstand and act irrationally,” Intrator said, according to people familiar with the matter. The company declined to comment further.

The reassurance did little to calm credit investors. CoreWeave, headquartered in Livingston, New Jersey, has positioned itself as a leading “neocloud”—a specialized AI cloud provider supplying Nvidia (NVDA) GPU capacity and software infrastructure. Its customer roster includes Microsoft (MSFT) and OpenAI, and its scale is substantial: $77.1 billion in assets, 1.5 gigawatts of active power, and roughly 3.7 gigawatts contracted as of June 30.

A Cash Flow Gap

Financial results tell a story of explosive growth paired with persistent losses. In the second quarter, revenue more than doubled to $2.575 billion from $1.212 billion a year earlier. But the net loss widened to $626 million, and net interest expense ballooned to $640 million—consuming roughly a quarter of quarterly revenue. First-half operating cash flow of $3.663 billion was dwarfed by $14.117 billion in purchases of property and equipment. CoreWeave ended June with $5.524 billion in cash and cash equivalents, a buffer that must stretch against enormous funding needs.

The company’s $104 billion revenue backlog, excluding more than $25 billion in new commitments added early in the third quarter, underscores future demand. But backlog recognition depends on delivery and service availability—it is not cash in hand today for interest, construction, and debt repayment. CoreWeave’s capital-spending forecast for 2026 was raised by $4 billion in August to a range of $35 billion to $39 billion.

Contagion Fears

The stress extends beyond CoreWeave. A global AI-stock selloff rippled through the sector, with other neoclouds like Nebius (NBIS) and Iren (IREN) experiencing volatility and Oracle (ORCL)’s credit-protection costs rising. The debate is no longer about one company’s leverage but about the broader financing model of the AI buildout. Higher required yields make fresh borrowing or refinancing less attractive, and the rapid obsolescence of AI chips adds pressure to keep investing before earlier equipment has earned its return.

Analysts remain divided. Deutsche Bank (DB) reiterated a buy rating, noting that about two-thirds of CoreWeave’s backlog involves investment-grade counterparties including Microsoft, Meta (META), IBM (IBM), and Caterpillar (CAT). But skeptics point to the cash-flow gap. “The cash flows must arrive to justify the spending,” said Gavan Nolan of S&P Global Market Intelligence (SPGI). Reuters (TRI) reported analyst expectations of nearly $13 billion in 2026 revenue but a $2.13 billion loss.

CoreWeave’s next quarterly results, expected in November, will be a critical test. Investors will scrutinize liquidity, borrowing terms, delivery milestones, and the pace of backlog conversion. For now, the paper profits of short sellers serve as a stark reminder of how quickly sentiment can shift in the high-stakes world of AI infrastructure finance.

Correction: An earlier version of this article misstated the exact date of the selloff. It occurred on Wednesday, October 14, 2026.