IREN stock advanced approximately 2.5% to $45.15 during Monday trading amid renewed attention to BlackRock’s substantially larger position in the AI infrastructure company and IREN’s latest progress on its Microsoft contract.
IREN bStock (IRENB), the Binance tokenized stock tracking IREN shares, traded near $45.52 and gained approximately 1% over the preceding 24 hours at the time of reporting.
However, BlackRock’s increased position was not a new purchase made on Monday. The disclosure covers shares held at the end of the second quarter and does not reveal individual transaction dates or purchase prices.
BlackRock’s Reported IREN Position Nearly Tripled
BlackRock’s latest Form 13F filing shows that its affiliated investment managers reported holding 13,315,152 IREN shares as of June 30, 2026.
That compares with 4,457,120 shares disclosed in BlackRock’s previous quarterly filing, which covered holdings as of March 31.
BlackRock’s reported share count consequently increased by 8,858,032 shares, or approximately 198.74%, during the second quarter. Its total IREN position was valued at approximately $608.9 million at the end of June.
The additional shares had a quarter-end market value of approximately $405 million. That figure should not be interpreted as the amount BlackRock spent because Form 13F filings disclose the value of holdings on the final day of the quarter—not transaction prices.
The filing was submitted on August 7 and covers positions held as of June 30. It therefore does not provide evidence that BlackRock purchased IREN shares on Monday or immediately before the stock’s latest rise.
Microsoft Milestone Strengthens IREN’s AI Expansion
The more recent development supporting IREN’s investment case is its progress on a major AI cloud contract with Microsoft.
On August 13, IREN announced that its Horizon 1 data center had been delivered to and accepted by Microsoft. The deployment also achieved NVIDIA Exemplar Cloud status following testing of its GB300 NVL72 systems.
Horizon 1 is the first of four 50-megawatt, direct-to-chip liquid-cooled AI cloud deployments being developed for Microsoft at IREN’s Childress campus in Texas.
The four facilities support a five-year cloud services contract valued at approximately $9.7 billion. IREN expects to deliver Horizons 2 through 4 later in 2026, bringing the Microsoft deployments to a combined 200 megawatts of critical IT capacity.
Delivering the first facility reduces some of the execution risk surrounding the agreement. However, the remaining deployments must still be completed, commissioned and accepted before they can fully contribute to revenue.
IREN Targets More Than $4 Billion in AI Cloud ARR
IREN is expanding from its Bitcoin-mining origins into a large-scale AI cloud and data-center infrastructure provider.
The company is targeting 480 megawatts of gross AI cloud capacity by the end of 2026, followed by 1.2 gigawatts in 2027.
IREN also recently increased its year-end 2026 AI cloud annualized run-rate revenue target to more than $4 billion. Approximately 85% of that target is supported by signed contracts following $2.8 billion in new customer agreements.
Investors should note that annualized run-rate revenue is an operating metric—not a GAAP revenue forecast. The target depends on assumptions involving GPU deployment, commissioning, utilization, customer acceptance and pricing.
What BlackRock’s Position Means for IREN Stock
BlackRock’s larger reported position demonstrates that its affiliated funds had substantially greater exposure to IREN at the end of the second quarter. However, it should not automatically be interpreted as an active endorsement of the company’s valuation or business strategy.
BlackRock’s consolidated 13F covers positions managed through numerous affiliated investment managers, including passive and index-tracking funds. The filing does not explain which strategies drove the increase or why the shares were added.
The more important long-term signal for IREN stock is the company’s ability to convert planned data-center capacity into operating infrastructure and recognized cloud revenue. Microsoft’s acceptance of Horizon 1 represents measurable progress, but the remaining deployments, financing requirements and customer concentration continue to present risks.
For now, the combination of increased institutional exposure and progress on IREN’s AI contracts supports the bullish narrative. Nevertheless, BlackRock’s filing confirms a position held on June 30—not a fresh purchase made during Monday’s rally.