CoreWeave Fell 12% Because Its Debt Got More Expensive

CoreWeave (NASDAQ: CRWV) closed at $93.17 on 18 August, down 12.10% in a single session that saw 36.6 million shares change hands, roughly 21% above the stock’s three-month average volume of 30.2 million. The sell-off hit as long-term US Treasury yields reached their highest levels in nearly two decades, according to The Motley Fool. The broader market fell in tandem: the S&P 500 declined 0.54% to 7,691.76, while the Nasdaq Composite fell 1.6% to 26,289.71, according to TheStreet.

The Balance Sheet Behind the Move

CoreWeave’s vulnerability to rising rates is not abstract. The company carried roughly $30 billion in long-term debt at the end of the second quarter, according to its Q2 2026 earnings release. Net interest expense reached $640 million in Q2 alone, more than double the $267 million recorded in the same quarter a year earlier. That single line item dwarfed the company’s $128 million in adjusted operating income for the period. Capital spending in Q2 totaled $9.4 billion, slightly above the high end of management’s guided range. Full-year 2026 capex guidance was raised to $35 billion to $39 billion, up from a prior range of $31 billion to $35 billion. At the $37 billion midpoint, CoreWeave plans to spend roughly 2.9 times the midpoint of its $12.4 billion to $13.2 billion full-year revenue guidance, according to an independent earnings analysis.Principal debt obligations totaled $35.6 billion as of 30 June, the company’s 10-Q filing showed. The debt-to-equity ratio exceeded 14 at the time of the sell-off. CoreWeave’s debt stack includes more than $10 billion in unsecured notes and convertible bonds raised during Q2, a $3.1 billion term loan, and a $1 billion strategic investment from Jane Street.

Revenue Growth That is Not in Question

The sell-off was not about demand. Q2 revenue reached $2.575 billion, up 112% year over year and 24% sequentially. The figure came near the upper end of CoreWeave’s own guidance range. Revenue backlog stood at approximately $104 billion, with more than $25 billion in net new customer commitments added in the early weeks of Q3, CEO Michael Intrator said on the Q2 earnings call.Adjusted EBITDA hit $1.51 billion with a 59% margin, and the net loss widened to $626 million from $290 million a year earlier, but the loss per share of $1.14 beat the consensus estimate of $1.52. Management guided Q3 revenue to $3.45 billion to $3.6 billion, above the $3.43 billion analyst consensus, and projected Q3 interest expense of $860 million to $940 million. Active power capacity reached 1.5 gigawatts in Q2, with contracted power growing to 3.7 gigawatts.

Why Rising Rates Hit This Name Hardest

CoreWeave is the purest listed expression of AI infrastructure financed with borrowed money. When long-term yields rise, two things happen simultaneously: the interest cost on existing and future debt increases, and the discount rate applied to cash flows that sit years in the future goes up. Both moved against the stock on 18 August. Among AI infrastructure peers, Nebius Group (NASDAQ: NBIS) fell 7.60% and Applied Digital (NASDAQ: APLD) dropped 8.56%, according to The Motley Fool. CoreWeave’s 12.1% decline was the largest in the group.The gap is explained by leverage. A 24/7 Wall St. analysis noted CoreWeave’s net debt-to-EBITDA ratio of 10.75, compared with far lower ratios at peers like Cloudflare and Snowflake, which fell less than 1% each. Oracle is down 24% year to date but carries a substantially different balance-sheet profile.The tension at the core of CoreWeave’s story has not changed: revenue is compounding at triple digits while the financing that funds it gets structurally more expensive. Management disclosed that the weighted-average cost of debt fell by nearly 300 basis points over the past year, saving roughly $1.1 billion in annualized interest. That progress is real, but it was achieved during a period of falling spreads on new issuance. If the long end stays elevated, the next round of refinancing or incremental borrowing will be costlier, not cheaper.

AI Capex is Becoming a Bigger Risk for Highly Leveraged Companies

CoreWeave’s sell-off is part of a broader repricing of AI infrastructure companies that rely heavily on debt-funded expansion. One key metric to watch is the ratio of capital expenditures to revenue, which highlights how aggressively a company is investing relative to the sales it generates. CoreWeave’s 2.9x ratio at the midpoint of its guidance is among the highest in the publicly traded AI cloud sector, leaving the company particularly exposed if borrowing costs remain elevated.The next major catalyst will be the direction of Treasury yields. CoreWeave’s Q3 earnings call, expected in November, should provide greater clarity on whether its projected $860 million to $940 million interest expense range remains intact or moves higher. If the 10-year Treasury yield stays near current levels, the company’s annual interest bill could exceed $3 billion, potentially consuming more than a quarter of projected full-year revenue. With the stock still up 133% since its 2025 IPO, the August 18 sell-off highlights the growing market scrutiny of the cost of financing rapid AI expansion.