Buffett Brain · Research note
Score updated 5 Oct 2026 · analysis from 7 Sept 2026
IREN· Financial Services
IREN
IREN Limited's negative ROIC and high valuation multiples indicate a lack of durable competitive advantage and financial health.
Buffett fit
Weak fit
Owner
12
Durability
27
Management
5
Price
0
Score updated 5 Oct 2026 · analysis from 7 Sept 2026
Buffett's checklist
Each number against Buffett's bar, and where it ranks among Financial Services stocks in our database.
How much profit the business makes on each dollar invested in it. Higher is better.
What is left of each sale after the cost of making the product. A high number often means pricing power.
The cash the business earns for its owners, compared with the price of the whole company.
How fast sales grew each year over the last five years.
How many years of today's profit you pay for at today's price. Lower means cheaper.
How much the company owes compared with what it owns outright. Lower is safer.
The four pillars
How the business measures up on each of Buffett's four tests.
If we owned IREN Limited outright, we'd be concerned about the negative of -3.2% and the high debt/equity ratio of 1.49.
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The company's durability is questionable given its reliance on Bitcoin, which faces potential regulatory and technological disruptions.
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Management's appears poor, with a 41.9% increase in share count over 5 years, diluting existing shareholders.
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The current valuation is excessively high, with a of 60.5 and an EV/ of 1169.8, far above reasonable levels.
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For and against
The strongest points on each side, with the numbers behind them.
In its favor
5- 1Current ratio of 3.72 indicates strong short-term liquidity.
- 2Net income margin of 31.71% is positive, despite operational challenges.
- 3Market cap of $17.61B provides scale in the industry.
- 4Net debt/EBITDA of 1.74 is within a reasonable range.
Concerns
8- 1 of -3.2% is below the sector's top-quintile cutoff of 10.6%.
- 2 is negative at -29.75%, indicating inefficiencies.
- 3Share count CAGR of 41.9% dilutes shareholder value.
- 4 ratio of 60.5 is unsustainable given the business volatility.
Price history
$41.76+68.4%· 5-year return
Weekly closing prices. Touch or hover the line for a date.
The business
How the business works
IREN Limited operates in the data center and Bitcoin mining industry, owning computing hardware and electrical infrastructure. The company generates revenue from its vertically integrated data centers, primarily through Bitcoin mining. Despite a net income of $86.94M, the is negative at -29.75%, indicating inefficiencies. The unit economics appear weak due to high operational costs and volatile Bitcoin prices.
How this analysis has moved
The call has held across 3 reviews.
Sep 27, 2026 → Oct 5, 2026
What other investors would say
The same company, judged by three other documented playbooks.
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