IREN (Nasdaq: IREN), formerly known as Iris Energy until its November 2024 rebrand, closed a $3.0 billion convertible senior notes offering on May 14, 2026. The notes, due December 2033, carry a 1.00% annual coupon and were priced at a 32.5% conversion premium above IREN's May 11 closing share price of $55.15, setting an initial conversion price of roughly $73.07 per share. The deal reflects growing institutional appetite for companies that can supply GPU computing power to AI hyperscalers at scale.

Deal Structure and Use of Proceeds

The offering launched at a $2.0 billion target on May 11, was upsized to $2.6 billion within a day on strong demand, and closed at $3.0 billion after underwriters exercised the full $400 million greenshoe option. Net proceeds came to approximately $2.96 billion. Of that amount, $201.3 million went toward purchasing capped call options, a hedging mechanism that reduces potential share dilution by limiting effective conversion to a cap price of $110.30 per share, double the stock's price at pricing. The remaining roughly $2.76 billion is allocated to capital expenditure, working capital, and general corporate use. If fully converted without the hedge, the notes would produce approximately 54.4 million new shares. J.P. Morgan, Goldman Sachs, Citigroup, Jefferies, MUFG, Wells Fargo, and Cantor Fitzgerald served as joint bookrunners.

The Contracts Behind the Capital Raise

IREN's fundraising capacity is directly tied to two landmark agreements signed in the weeks before the offering closed. In early May, IREN announced a five-year, $3.4 billion AI cloud services agreement with Nvidia, under which Nvidia will use IREN's GPU infrastructure for its own internal workloads. As part of that arrangement, the two companies also agreed to deploy up to 5 GW of Nvidia's DSX-branded infrastructure across IREN's global data center portfolio. Nvidia also received a five-year option to purchase up to 30 million IREN shares at $70 each, a potential $2.1 billion stake that vests upon the deployment of 600,000 GPUs across IREN's facilities. The Nvidia announcement sent IREN stock up 7% on May 8.

Prior to the notes offering, IREN had already signed a $9.7 billion, five-year agreement with Microsoft to deploy GPU cloud infrastructure at IREN's 750-megawatt Childress, Texas campus. That deal, which includes a 20% prepayment and roughly $5.8 billion in equipment supplied by Dell Technologies, covers 200 megawatts of liquid-cooled critical IT load across four buildout phases. Together, the two contracts represent more than $13 billion in contracted revenue. Co-CEO Daniel Roberts said in the company's Q3 FY2026 earnings call: "There are no idle GPUs. All of our operational capacity is fully contracted."

Financial Performance and the Broader Mining Shift

IREN's most recent quarterly results illustrate the pace of the transition. In Q3 FY2026, the company reported total revenue of $144.8 million, down 21.6% from the prior quarter, largely because Bitcoin mining revenue fell 33.6% to $111.2 million. AI cloud revenue, by contrast, nearly doubled quarter over quarter, rising 94.2% to $33.6 million. The company posted a net loss of $247.8 million for the quarter, partly due to write-downs tied to mining decommissioning, while adjusted EBITDA came in at $59.5 million. IREN has secured 5 gigawatts of power capacity across sites in North America, Europe, and Asia-Pacific, and is targeting $3.7 billion in annualized revenue by the end of 2026.

IREN's trajectory mirrors a broader industry shift. In recent quarters, Bitcoin mining margins have compressed sharply, with the weighted average cost to mine one bitcoin sitting near $80,000 in Q4 2025; by early 2026, miners were estimated to be losing roughly $19,000 per coin at prevailing prices. AI and high-performance computing (HPC) infrastructure, by comparison, carries gross margins near 85%, versus around 60% for Bitcoin mining today, according to analysis by Intellectia AI. Across publicly listed miners, AI and HPC contracts totaling more than $70 billion have been signed, with Core Scientific's $10.2 billion deal with CoreWeave and Hut 8's $7 billion Google-backed arrangement among the largest. CFO Anthony Lewis put IREN's position plainly: "The capital is out there as long as you sign good contracts and show you can execute."

What This Means for Emerging Markets

The concentration of GPU infrastructure under long-term contracts held by a small number of Western operators has practical consequences for builders in South Asia and Africa. India is deploying over 80,000 GPUs with more than $100 billion in committed infrastructure investment, but domestic players including Yotta and Reliance Jio are competing for the same Nvidia hardware that IREN is now locking up under five-year agreements. Microsoft, which is both IREN's anchor customer and a $3 billion investor in Indian cloud infrastructure, connects these supply chains directly. As supply tightens globally, smaller regional cloud providers may face longer procurement timelines and higher costs for equivalent GPU capacity.

The gap is even sharper in Africa. The continent's five largest data center markets hold roughly 400 megawatts of capacity today. Nigeria's national power grid has never exceeded 6 gigawatts for a population of 230 million people, a stark contrast to South Africa, whose grid provides 48 gigawatts for a population of 63 million. That structural power gap makes it difficult for African operators to compete for the kind of renewable-power-backed, gigawatt-scale contracts that define IREN's model. Cassava Technologies is deploying 3,000 Nvidia GPUs across five African countries, a meaningful local step, but a fraction of IREN's pipeline. Microsoft has separately committed $300 million to South African cloud and AI infrastructure by 2027 and announced a $1 billion package for Kenya that includes a green data center, investments that draw a direct line between the hyperscaler capital flows driving IREN's growth and the infrastructure priorities of specific African markets. For crypto developers and Bitcoin miners in Nigeria, Kenya, and South Africa, the exit of large Western miners from proof-of-work may offer a modest boost to their relative share of global hash rate. It does little, however, to ease their access to GPU compute.

What Comes Next

IREN has set a target of 1,210 megawatts of operational data center capacity by 2027. The company can begin redeeming the new notes as early as June 2030, provided the share price exceeds 130% of the conversion price. Chief Commercial Officer Kent Draper noted on the earnings call that demand for IREN's remaining uncontracted capacity remains strong. The pace at which that capacity gets allocated, and to whom, will shape not just IREN's balance sheet but the structure of global AI compute access for years to come.