After a brutal selloff in the prior session, AI computing infrastructure stocks staged a strong rebound on Friday, but the rally cooled markedly as the day progressed.

CoreWeave, Inc. (ASX: CRWV) reversed an early gain of as much as 9.3% to trade lower, IREN Ltd (ASX: IREN) saw its advance narrow from 24.6% at the open to about 12%, and Nebius Group also pulled back from a 13.7% gain to roughly 2.4%. As of the latest update, CoreWeave, Inc. (ASX: CRWV) was up 4.4% on Friday.

The rebound was initially fueled by IREN Ltd (ASX: IREN)'s latest earnings report. The company's AI Cloud business posted sharp revenue growth and quarterly revenue topped market expectations, offering a positive signal for the battered Neocloud sector.

However, the results also exposed issues such as delays in data center project delivery and elevated capital spending, and market concerns over industry expansion costs and the ability to deliver profits have not faded.

On Thursday, AI infrastructure stocks suffered a sharp selloff. The outcome of the U.S. midterm elections sparked worries about tighter regulation of data center construction, and combined with Microsoft tightening its review of projects at some Neocloud suppliers, CoreWeave, Inc. (ASX: CRWV), Nebius Group, and IREN Ltd (ASX: IREN) fell about 10%, 15%, and 17%, respectively.

While Friday's bounce showed some funds beginning to rebuild positions, during U.S. midday trading Microsoft was again reported to be gradually shutting down some computing resources it had previously leased from Oracle and to have decided not to renew the related contracts. After the news emerged, Oracle's stock quickly plunged, and Neocloud concept stocks that had rallied sharply also gave back gains.

IREN's Results Beat Expectations, Serving as a Catalyst for the Sector Rebound

IREN Ltd (ASX: IREN) reported fiscal 2027 first-quarter results after the close on Thursday, providing some support to the sector.

For the quarter ended September 30, IREN Ltd (ASX: IREN) generated revenue of $228 million, above analysts' expectations of $221 million. AI Cloud revenue reached $200 million, up sharply from $71 million in the previous quarter. Adjusted EBITDA was $66 million.

IREN Ltd (ASX: IREN) also disclosed that its revenue backlog reached $20.3 billion, reflecting that AI computing demand continues to underpin business expansion.

After the results were released, investors reassessed the growth prospects of Neocloud companies. IREN Ltd (ASX: IREN) shares rose about 24.6% early on, and CoreWeave, Inc. (ASX: CRWV) and Nebius Group also rebounded in tandem.

Still, the strong revenue growth did not fully dispel market doubts about IREN Ltd (ASX: IREN)'s execution capabilities.

The company said that some data center infrastructure deliveries were delayed due to Microsoft's request for network design changes and shifts in supplier delivery schedules. IREN Ltd (ASX: IREN) had originally planned to reach an annualized revenue run rate of more than $4 billion by the end of the year, but has now pushed that timeline to January 2027, and possibly to the end of February.

At the same time, IREN Ltd (ASX: IREN) expects capital spending of about $15 billion for the remainder of the fiscal year. As of the end of September, the company's capital commitments had reached $18.95 billion, up significantly from $13.81 billion three months earlier.

This means the rapid growth of the AI Cloud business still requires continued heavy investment, and project delays could also postpone the recognition of related revenue.

Microsoft Signals Contraction for a Second Straight Day, Will Not Renew Some Oracle Computing Capacity

On Thursday, Bloomberg reported that Microsoft is strengthening oversight of some data center projects at Nebius Group, IREN Ltd (ASX: IREN), and Nscale, exiting projects it deems riskier, while internally discussing whether to continue signing new Neocloud cooperation agreements.

During U.S. midday trading on Friday, Bloomberg, citing people familiar with the matter, reported again that Microsoft has begun gradually shutting down some computing resources it previously leased from Oracle in recent months and decided not to renew the related contracts.

The report noted that over time, the computing resources Microsoft leased gradually failed to meet its evolving technical needs. The Oracle servers involved carry an earlier generation of Nvidia chips, reducing their value to Microsoft.

After the news was published, Oracle's stock quickly turned lower from a gain, having risen as much as 3.8% early in the session, then erased the advance and hit a intraday low of $109.21, with losses at one point approaching 5.2%. Oracle emphasized that it still sees robust market demand for AI infrastructure, including demand for earlier-generation GPUs.

The news also quickly spread to AI computing leasing concept stocks. CoreWeave, Inc. (ASX: CRWV), IREN Ltd (ASX: IREN), and Nebius Group all pulled back noticeably after sharp early rebounds.

The related reports further intensified market concerns about the business models of third-party computing suppliers.

For companies such as CoreWeave, Inc. (ASX: CRWV), Nebius Group, and IREN Ltd (ASX: IREN), business expansion relies heavily on data center construction, GPU procurement, and external financing. They need to invest heavily before projects generate revenue, so delays in power access, postponements in equipment delivery, or customers adjusting demand can all affect revenue recognition and cash recovery cycles.

The financing environment also poses pressure. CoreWeave, Inc. (ASX: CRWV) in particular has drawn credit market attention with its highly leveraged expansion model. With uncertainty still surrounding the return cycle for AI infrastructure investment, investors' tolerance for valuations of capital-intensive companies is declining.

Democratic Wins Spark Policy Concerns, Market Reassesses AI Infrastructure Investment Returns

Beyond company-specific operating issues, changes in the policy environment are also an important backdrop for the sector's recent sharp swings.

After Democrats scored major victories in the midterm elections, the market began to worry that data center construction could face stricter regulatory scrutiny. Policy direction in key data center markets such as Texas is drawing particular attention.

Citing estimates from UBS analysts, Reuters reported that about 30% of expected new U.S. data center capacity in 2028 could face risk of construction pauses.

Against this backdrop, Friday's early rebound was driven more by better-than-expected earnings, a broad recovery in tech stocks, and position repair after the previous day's sharp decline. Microsoft's latest disclosure on computing leasing adjustments once again pulled market attention back to customer demand, technological iteration, and capital returns at third-party computing suppliers.

For CoreWeave, Inc. (ASX: CRWV), IREN Ltd (ASX: IREN), and Nebius Group, growth in AI computing demand still offers long-term business opportunities, but whether large cloud service providers can continue to expand external procurement and whether suppliers can deliver computing capacity that meets technical requirements on schedule are becoming important variables affecting industry valuations.