The bonds say fifteen, the backlog says $104bn

CoreWeave's shares fell 15.5 per cent on Wednesday and the yields on two of its bonds rose to almost 15 per cent, CNBC reported, as investors grew concerned that some technology companies are borrowing too heavily to build artificial-intelligence infrastructure. The yield to maturity on the company's 9.625 per cent notes due 2032 stood at 14.8 per cent and on its 9.75 per cent notes due 2031 at around 14.9 per cent, according to CNBC. A bond's yield rises as its price falls, so the move means investors were paying less for debt whose coupons are fixed.

Mike Intrator, CoreWeave's chief executive, dismissed the moves in a memo obtained by CNBC. "When you are building a new type of technology company there will be periods of time when the market misunderstands and acts irrationally," he wrote. "We are confident in our backlog which more than supports all of our debt obligations."

The backlog is set out in CoreWeave's second-quarter results. Revenue backlog was approximately $104bn at 30 June, according to the results release filed with the SEC on 11 August, and that figure excludes more than $25bn of net new customer commitments the company said it added early in the third quarter. CoreWeave defines backlog as remaining performance obligations plus other amounts it expects to recognise under committed contracts, "subject to the satisfaction of delivery and availability of service requirements". It is revenue the company expects to earn as it builds and supplies capacity, not cash it holds.

The same release shows the cost of building it. Second-quarter revenue was $2,575m, up from $1,212m a year earlier, an increase of 112 per cent by our arithmetic. Net interest expense rose to $640m from $267m, about 2.4 times the year-earlier figure, and the net loss widened to $626m from $290m. At 30 June the balance sheet carried $31.4bn of recourse debt and $3.7bn of non-recourse debt, about $35.1bn in total by our addition. The backlog is roughly three times that debt, by our arithmetic, but backlog is future revenue, not profit, so the comparison flatters the company's position.

S&P rates CoreWeave B+, which CNBC described as junk bond territory. Gavan Nolan, executive director of fixed income pricing at S&P Global Market Intelligence, told CNBC that with interest rates generally higher, it was natural for highly leveraged companies such as CoreWeave to be affected. CoreWeave "has capital expenditure levels that are almost hyperscaler-like, but it doesn't have the hyperscaler balance sheet," Nolan said, referring to the largest cloud operators.

Not every analyst CNBC spoke to was alarmed. Paul Meeks, head of technology research at Freedom Capital Markets, called CoreWeave's balance sheet "relatively bad" compared with its neocloud peers, because it has borrowed more and is building more data centres. But he said the yields had risen on concern "that I don't share" about its ability to meet interest costs over time, and added: "It's definitely not a deteriorating situation." He said he did not expect improvement until the new data centres are running.

The sell-off reached beyond CoreWeave. Oracle shares closed down nearly 9 per cent, and the yield on its 6.25 per cent bond due November 2032 rose to 7.24 per cent, CNBC reported; the Nasdaq Composite closed 1.9 per cent lower. Alphabet, Amazon, Meta and Oracle had together issued more than $228bn of bonds this year as of 13 October, according to LSEG data cited by CNBC, more than double their total for all of 2025. All but Oracle hold investment-grade ratings from S&P.

By our arithmetic, a 14.8 per cent yield is 5.2 percentage points above the coupon on CoreWeave's 2032 notes and about 7.6 points above the yield on Oracle's bond of similar maturity. Luis Alvarado, co-head of global fixed income strategy at Wells Fargo Investment Institute, described the shift to CNBC: "The era of easy money, which we experienced in the first nine months of the year, is starting to disappear and dissipate."

Why it matters is the cost of new money rather than the share price. The coupons on CoreWeave's existing bonds do not change, but the yields at which they trade indicate what lenders would demand for fresh borrowing or refinancing, and the company's growth depends on building capacity ahead of the revenue in its backlog. CoreWeave's next quarterly results are expected in November, according to CNBC.

The company's numbers are its own. Komposite has reported on Lambda's $50bn backlog and on Nscale's filing, where contracted value was concentrated in a few customers. This week the bond market put a price on how much such backlogs are worth to lenders.