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IREN vs. Riot Platforms: Which Bitcoin-to-AI Stock Looks Stronger Now?

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Key Takeaways

  • IREN is scaling AI cloud services, while Riot is building around long-duration data center leases.
  • IREN says 2026 AI capacity is largely sold out, while Riot's largest lease fully deploys in 2028.
  • Riot has $9.8B in contracted data center revenues, while IREN targets 0.8 GW of IT load in 2027.

IREN Limited (IREN - Free Report) and Riot Platforms (RIOT - Free Report) share the same starting point. Both built large Bitcoin mining operations around access to power, land and data center infrastructure, then found a second growth path in the surge in AI computing demand. This common asset base gives each company a credible route from crypto mining into AI and high-performance computing without starting from scratch. 

The difference is how far each has moved. IREN is rapidly becoming an AI cloud operator, combining data centers, GPUs and software while planning to effectively wind down Bitcoin mining by the end of 2026. Riot is taking a more gradual route, keeping a sizable mining business while developing and leasing powered data center capacity to customers such as AMD and a frontier AI lab. 

For investors, the comparison is less about two miners and more about two different ways to monetize scarce power — cloud services versus long-term infrastructure leases.

The Case for IREN

IREN's growth case rests on how quickly its AI business is moving from promise to contracted demand. The company says 2026 capacity is largely sold out, with more than $4 billion of contracted annualized run-rate revenues, while $1 billion was already operating in late August. Horizon 1, the first 50 MW deployment for Microsoft, has been delivered, and three more 50 MW phases are targeted for the December quarter. 

The customer mix is also widening. Beyond Microsoft and NVIDIA, IREN has signed or expanded relationships with AI developers and enterprises, including Cohere, Prometheus, Perplexity and Figure AI. This matters because a broader customer base can reduce dependence on a few large contracts while giving IREN more opportunities to sell managed services through Mirantis. 

Capacity provides another advantage. IREN is targeting roughly 0.3 GW of IT load in 2026 and 0.8 GW in 2027, backed by a data center pipeline exceeding 5 GW. Riot also has large power assets, but IREN is moving faster toward a full-stack model that monetizes the data center, GPU compute and software layers together. 

However, the trade-off is execution risk. Fiscal 2027 capital spending is forecast at $25 billion to $30 billion, making timely financing, construction and customer acceptance critical. Still, IREN has assembled $14 billion of existing cash, committed GPU financing and prepayments, with additional financing targeted. The opportunity is substantial, so is the operational burden of delivering it on schedule. This combination makes successful delivery the test of whether contracted demand can become durable earnings growth.

The Case for RIOT

Riot's AI strategy is taking shape around long-duration data center leases rather than a full-stack cloud offering. At Rockdale, the company has contracted 241 MW of critical IT capacity across AMD and a leading frontier AI lab, representing about $9.8 billion of contracted data center revenues. This creates a clearer long-term revenue base than Riot had as a pure Bitcoin miner. 

Execution has started well. Riot delivered the first 25 MW to AMD on time and on budget, while another 25 MW is under construction for full delivery by May 2027. The larger 191 MW frontier AI lab lease is expected to begin rent commencement in December 2027 and reach full deployment in June 2028, with an initial 20-year term. 

Riot also has significant optionality at Corsicana, where 1 GW of approved power supports a potential 756 MW of critical IT capacity. However, the full site is currently covered by a nonbinding letter of intent, not an executed lease. Compared with IREN's contracted 2026 AI capacity, Riot's next major AI revenue step-up is more back-end weighted. 

Bitcoin mining remains an important part of Riot's economics and financing. Second-quarter 2026 mining revenues were $113.7 million, and the company has been selling Bitcoin to fund the equity portion of data center development. This provides liquidity, but it also leaves results exposed to Bitcoin prices and network difficulty. Riot's lease model offers durable potential cash flows, yet the transition to AI is progressing at a measured pace. This leaves more execution milestones ahead.

How Do Estimates Compare for IREN & RIOT?

The Zacks Consensus Estimate for IREN’s fiscal 2027 and 2028 sales implies year-over-year growth of 332.62% and 162.39%, respectively. The consensus mark for IREN’s 2027 earnings has been revised northward in the past 30 days, while estimates for 2028 have been tweaked southward.  

For IREN: 

Zacks Investment Research
Image Source: Zacks Investment Research

The Zacks Consensus Estimate for RIOT’s 2026 and 2027 sales calls for a year-over-year increase of 3.82% and 23.30%, respectively. Over the past 60 days, earnings estimates for both 2026 and 2027 have been revised downward, signaling a bearish outlook from analysts.

For RIOT:

Zacks Investment Research
Image Source: Zacks Investment Research

Price Performance and Valuation of IREN & RIOT

Over the past three months, IREN shares have declined 3.9%, while RIOT shares have plunged 17.1%. In comparison, the S&P 500 composite has advanced 3.5% in the same time frame. 

Zacks Investment Research
Image Source: Zacks Investment Research

On a forward 12-month price-to-sales basis, IREN currently looks less demanding than RIOT. IREN trades at 4.06X forward 12-month price-to-sales versus 10.95X for RIOT.

On that measure, IREN carries the lower forward sales multiple despite pursuing the faster AI revenue ramp-up. IREN's forward revenue base assumes rapid commissioning of contracted AI capacity, while Riot's largest data center lease does not fully deploy until 2028. Hence, the gap suggests investors are paying substantially more for each dollar of Riot's expected near-term sales than IREN's today.

Valuation: IREN & RIOT

Zacks Investment Research
Image Source: Zacks Investment Research

Conclusion: IREN Offers the Stronger Growth Setup

IREN and Riot both offer ways to invest in the migration of Bitcoin infrastructure toward AI data centers, but their growth profiles are increasingly different. Riot has secured credible long-term tenants and retains a mining engine, yet much of its major AI capacity will arrive later. IREN is moving more aggressively, with AI cloud revenues already scaling, 2026 capacity largely contracted and a broader full-stack platform under development. 

IREN carries a Zacks Rank #3 (Hold), with a Growth Score of B, Momentum Score of B, Value Score of F and VGM Score of C, suggesting stronger growth and momentum but weaker value characteristics. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

RIOT also carries a Zacks Rank #3 and has a Value Score of F, Growth Score of D, Momentum Score of D and VGM Score of F, indicating weaker value characteristics and less favorable growth and share-price/estimate trends. The VGM Score of F reinforces that weakness across the three styles.

For investors focused on growth, IREN is the better stock to consider, while Riot offers a slower, lease-led transition with continued Bitcoin exposure.

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