On Wednesday, as cloud and AI stocks came under pressure following Democratic midterm election victories, IREN (IREN.US) drew attention from retail traders.
The Australian data center company also faced scrutiny after a report said it caused Microsoft (MSFT.US) to reduce its AI capital spending last quarter.
IREN shares fell 2.5% in overnight trading, after already dropping 11.4% during the regular session.
Notably, IREN plans to report its fiscal first-quarter results after Thursday's U.S. market close.
Analysts expect its fiscal first-quarter sales to decline 9% to $221.7 million, which would mark the third consecutive quarter of negative sales growth.
They expect an adjusted loss per share of $0.67, far wider than the $0.01 loss per share in the same period last year.
People familiar with the matter said IREN encountered delays at its Childress, Texas data center project, causing Microsoft (MSFT.US) to postpone spending originally planned for the September quarter.
Microsoft (MSFT.US) spent about $5 billion less than planned last quarter because data center capacity it expected to lease was not ready on time.
Microsoft (MSFT.US) Chief Financial Officer Amy Hood said on an analyst call last week: "Capital expenditures were $45.2 billion because we had some delays in third-party capacity we expected to deliver in the first quarter."
One of the suppliers involved is IREN, though it remains unclear to what extent its delays contributed to the shortfall.
Microsoft (MSFT.US) previously agreed to spend $9.7 billion over five years to lease Nvidia servers at IREN's Childress, Texas data center.
IREN originally planned to bring those servers online gradually during 2026 but has been facing delays.
Democrats Take Both Chambers: A Turning Point for Data Center and AI Regulation
The midterm elections are settled, with Democrats winning both the Senate and the House.
For the surging AI infrastructure wave, this may mark a clear policy turning point: from "unrestrained expansion" to "tighter regulation."
In the months prior, market resistance to data centers had already been building at the local level.
A September Quinnipiac poll showed 72% of voters opposed new data centers in their communities, up 7 percentage points from March.
A rare wave of ballot initiatives swept across the United States, with more than 40 data center-related measures put to voters in this midterm election, involving taxation, regulation, and even outright bans.
Piqua, Ohio, even put "whether to recall a mayor who supports AI infrastructure" directly on the ballot.
Now, this localized "NIMBY sentiment" is climbing the ladder of power all the way to Washington.
Analysts widely expect Democrats, who control both chambers, to intensify congressional scrutiny of Big Tech, AI safety standards, and data center construction.
Heavyweights such as Warren, the top Democrat on the Senate Banking Committee, have already spoken frequently on data center and AI issues, and related legislative action is expected to accelerate.
What investors fear most is precisely that this added regulatory uncertainty will directly slam the brakes on AI infrastructure.
The market's pricing has already given its answer.
On Wednesday, data center concept stocks fell across the board: CoreWeave and Core Scientific each dropped 10%, while Nebius and Applied Digital each fell 7%, with further declines in overnight trading.
Behind the capital flight is the market's repricing of a "slowing AI arms race."
For hyperscale cloud providers, this is like adding frost to snow.
Microsoft (MSFT.US) had just cut about $5 billion from last quarter's capital expenditures due to third-party data center delivery delays; if regulation further tightens the approval process, an already strained supply cadence will face even greater pressure.
For second-tier data center developers like IREN, which rely heavily on a single customer and a single project, regulatory headwinds combined with project delays further amplify their risk exposure.
The industry appears to have seen this coming.
OpenAI was reported to be pushing to rename data centers as "AI compute parks," and is said to plan a large-scale policy and public relations campaign immediately after the election, attempting to use a gentler narrative to "align" with the new class of lawmakers and hedge against looming regulatory pressure.
This detail precisely confirms the industry's anxiety over a policy shift.
It is foreseeable that in the coming quarters, "data center approvals, AI safety legislation, and energy and water constraints" will become three lingering dark clouds over the U.S. AI sector.
Among them, tighter energy and water permits could further raise data center construction costs and delays.
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