Why Investors Should Buy IREN Limited Over Nebius

Alex Sirois

Mon, August 31, 2026 at 4:37 PM GMT+3 4 min read

Quick Read

IREN trades down 6% year to date while NBIS surged 150%, creating a contrarian entry if Roberts delivers Horizons 2-4 on schedule.
Customer prepayments funded 96% of IREN's Microsoft GPU capex, a capital-efficiency signal masking a $684M GAAP loss tied to scrapped mining hardware.
Nebius landed four contracts averaging over $1 billion each and holds $37 billion in obligations, but three customers generate 59% of its revenue.
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IREN Limited (NASDAQ:IREN) and Nebius Group (NASDAQ:NBIS) just reported earnings that read like two chapters of the same AI buildout. IREN is closing a Bitcoin-to-AI pivot. Nebius is stacking billion-dollar contracts on a full-stack cloud. One quarter looked painful. The other looked pristine.

Andriy Onufriyenko / Moment via Getty Images

Impairments Bury IREN. Landmark Deals Lift Nebius.

IREN's June-quarter revenue landed at $137.2 million, missing the $140.75 million consensus by 2.52%, with a $684 million GAAP net loss driven by a $450.4 million non-cash impairment on decommissioned mining hardware. AI Cloud revenue hit $70.5 million and more than doubled sequentially. CEO Daniel Roberts said "the digital world can scale almost instantly, but the physical world cannot." Horizon 1 shipped to Microsoft with NVIDIA Exemplar Cloud status on GB300 NVL72.

Nebius moved opposite. Q2 revenue jumped 454.04% year over year to $582.30 million, beating consensus by 1.33%. The AI Cloud unit produced $285.7 million of adjusted EBITDA at a 50% margin. Four landmark contracts closed, averaging more than a billion dollars each. Remaining performance obligations stand at $37.49 billion.

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NBIS Price Target — 24/7 Wall St.

Vertically Integrated Underdog Meets Full-Stack Machine

IREN owns power, land, substations, cooling and buildings across Texas, British Columbia, Oklahoma, Australia and Spain, with more than five gigawatts of announced capacity. Roberts wants each layer to earn a margin. Recent three-year contracts price at more than $20 million per megawatt of IT load, with active discussions near $25 million. Customer prepayments funded roughly 96% of the Microsoft GPU capex, a striking capital-efficiency signal for a former miner (the power, cooling, and land layer IREN owns is exactly the non-chip AI supply chain we mapped in a free report on seven AI infrastructure names).

Nebius is software-forward. Aether, Token Factory and Tavily wrap the GPUs, and short-term training deals are negotiated at $40 million to $50 million per megawatt. That shows pricing power. The balance sheet reflects it: $8.5 billion in convertible debt with a fair value of $20.8 billion, $12.1 billion in uncommenced lease obligations, and three customers who account for 24%, 21%, and 14% of Q2 revenue. Concentration risk is real.

Horizons 2 Through 4 Drive the Thesis

IREN must convert contracts into live gigawatts. Horizons 2, 3 and 4 target the December quarter, with revenue predominantly in the March quarter. FY2027 capex guidance sits at $25 billion to $30 billion, and management targets roughly $8 billion more in GPU financing and prepayments. Nebius has less to prove operationally but a heavier funding lift: $20 billion to $25 billion of 2026 capex and a Vera Rubin rollout starting late 2026 or early 2027.

Why IREN Interests Me

I lean toward IREN for investors comfortable with turnaround risk. Nebius is the safer compounder, and unless you expect rapid execution on IREN's power site conversions without excessive shareholder dilution, the risk profile favors Nebius. The market agrees: NBIS is up 149.9% year to date while IREN is down 6.14%. That gap is why IREN interests me. If Roberts delivers Horizons 2 through 4 on schedule and secures data-center financing without heavy equity issuance, the discount closes quickly. If he stumbles, the setup punishes you. Nebius fits a growth-at-scale investor. IREN fits a contrarian who reads Roberts' "funding flywheel" language and believes it.