"We've seen this pattern before!" Major short seller explains: Why short the AI newcomer CoreWeave

The traders who rose to fame through the book and film "The Big Short" are now turning their attention to AI compute rental company CoreWeave.The investment firm Seawolf Capital, co-founded by three of the "Big Short" traders, has publicly announced a short position on CoreWeave, systematically explaining their bearish thesis—this company's business model seems familiar, but its true Achilles' heel is its ability to access capital.

Seawolf co-founder Vincent Daniel revealed in a Substack post that the firm has established a short position on CoreWeave and draws analogies between its business model and those of several asset-leasing companies. He points out that the economic lifespan of GPUs may be much shorter than that of oil drilling rigs, airplanes, or shipping equipment, while competing chip supply is expanding at a stunning pace, raising fundamental questions about CoreWeave's moat.

Daniel emphasizes that the core logic of this short bet is not a bearish view on the AI sector as a whole, but rather a judgment on capital availability and financing costs. He believes tech companies are competing with governments for financing resources, compounded by a tightening monetary policy cycle.If CoreWeave cannot continuously raise capital at low cost, its business model will be unsustainable. CoreWeave's share price has recently suffered significant declines due to market concerns over its debt issues.

From a Social Media Post to a Systematic Short Position

Seawolf's short position on CoreWeave originated from a rather dramatic incident.

Daniel noted that previously, someone mocked investors shorting CoreWeave without financial analysis support on the X platform, which instead prompted the Seawolf team to seriously study the company.

"It was hard to refute that argument, so we decided to take a deep dive," Daniel wrote. "As we dug into the CoreWeave story, we began to realize its business model looks very familiar."

Daniel, along with Seawolf co-founders Danny Moses and Porter Collins, conducted in-depth research into CoreWeave. CoreWeave's core business is leasing high-performance AI compute power primarily based on NVIDIA GPUs, placing it within the so-called "neocloud" sector.

"We've Seen This Model Before": Analogy to Traditional Asset Leasing Companies

Seawolf compared CoreWeave's business model to several traditional asset leasing companies, including Transocean, which leases oil drilling rigs, and AerCap Holdings, an aviation equipment leasing company.

Notably, Seawolf holds positions in both of these companies, but makes it clear they prefer them over CoreWeave.

The reason lies in the fundamental differences in the economic life and supply constraints of these assets. Daniel points out that Seawolf prefers to lease assets whose underlying supply is structurally constrained and with limited long-term order books. "Although the demand for compute is undoubtedly very strong, the long-term supply of competing chip capacity is expanding at an astonishing rate." In contrast, the economic lifespan of GPUs is subject to greater uncertainty.

Capital Structure as the Core Risk

On the financial side, Seawolf's concerns are more specific. Daniel points out that CoreWeave's operations require continued large-scale purchases of expensive AI chips, resulting in extremely intensive capital consumption.

"Based on the projected free cash flow gap for 2027 and the current balance sheet leverage (specifically, the ratio of tangible common equity to total assets), the situation is daunting," Daniel wrote. "To own this stock, investors must believe CoreWeave can raise tens of billions of incremental capital on value-accretive terms—a bet we're not willing to make."

He also admits that Seawolf's analysis of CoreWeave is still at an "early stage."

Analogy to WeWork and the Overall View on AI

This is not the first time Seawolf has publicly questioned CoreWeave. Earlier this month, Moses appeared with another "Big Short" investor Steve Eisman on "The Real Eisman Playbook," comparing CoreWeave to WeWork—the former Silicon Valley shared workspace unicorn that has now become a cautionary tale for tech startups.

However, Daniel clearly distinguishes this short bet from a judgment on the overall AI industry. He states that Seawolf's short on CoreWeave is essentially a bet on capital availability and financing costs: tech companies are competing with governments for financing resources, and the tightening monetary policy cycle further squeezes cheap funding.

"If it can't raise funds at a low cost, or capital is simply unavailable, then completing this journey will be extremely difficult—that is precisely my judgment on CoreWeave," Daniel told Business Insider.