Riot Platforms (Nasdaq: RIOT) reversed sharply in extended trading after the company announced its agreement with Anthropic. After closing down 5.46% at $19.40 on Monday amid a broadly weak market, the Bitcoin miner’s stock surged more than 20% in after-hours and pre-market trading once it disclosed a landmark AI data-center deal, quoted at $23.34, up 20.31%, by early Tuesday, according to real-time Nasdaq data, after peaking closer to $24.40 (up roughly 25%) overnight.
The catalyst was the 20-year lease to supply computing capacity to Anthropic, the AI lab behind the Claude models, worth approximately $9.1 billion in contracted revenue. The agreement expands Riot’s existing push into AI and high-performance computing infrastructure.
The Crypto Times covered the deal’s energy and infrastructure implications separately; this piece focuses on what it means for the stock.
A Down Day, Then a 20% Reversal
The timing of the move is telling. On Monday, RIOT fell 5.46% alongside a soft broader market, trading as the high-beta, Bitcoin-correlated stock it has long been. Hours later, the AI announcement flipped the narrative entirely, and the stock’s overnight surge more than erased the day’s loss. Retail sentiment shifted accordingly: on the social platform Stocktwits, RIOT became the most-mentioned ticker and sentiment flipped to “extremely bullish,” according to the platform’s readings, a gauge of retail mood rather than a measure of fundamentals.
The sharp move puts renewed focus on Riot’s strategy of converting part of its power and data-center infrastructure into AI capacity. The long-term contracts offer a revenue stream that is less directly tied to Bitcoin prices, although the projects still depend on construction, financing, and customer demand. The stock had already climbed roughly 53% year-to-date before the deal, based on Monday’s close.
The Deal That Moved the Stock
Under the agreement, Riot will provide 191 megawatts of IT capacity at its Rockdale campus in Texas, its flagship former mining site, to what the company described in its own statement as a “leading frontier AI lab.” The contract runs through June 2048 and is expected to generate about $9.1 billion in revenue over its initial 20-year term, with two five-year extension options that could lift the total to $16.1 billion if fully exercised. Delivery is phased: the first 96 megawatts are targeted for December 2027 and the full capacity for June 2028.
The scale is easier to grasp per year: spread over the 20-year term, the deal averages roughly $455 million in annual contracted revenue, a figure larger than a full quarter of Riot’s total current revenue, from a single customer. Chief Executive Jason Les framed it as part of a broader shift, noting that in “just over six months,” Riot has signed leases totaling 241 megawatts, the Anthropic capacity plus 50 megawatts committed to AMD in January, representing roughly $9.8 billion of long-term contracted revenue with two major players in the AI ecosystem.
Why the Market Cared So Much
The enthusiasm reflects what the deal fixes. Riot’s core problem, shared across the mining sector, is that revenue swings with a volatile Bitcoin price and thinning mining margins. That was visible in its second-quarter results, released alongside the lease: revenue rose 14% year-over-year to $174.2 million, but the company swung to a net loss of $237.2 million, or $0.68 per share, from a $219.5 million profit a year earlier. Even as data-center revenue ($23.2 million) and engineering revenue ($37.3 million) grew, the mining business dragged the bottom line.
The 20-year lease gives Riot a long-term contracted revenue stream that is less directly tied to Bitcoin prices than its mining operations. It is the same thesis driving a sector-wide pivot, with peers including IREN, Core Scientific, TeraWulf, Applied Digital, and Hut 8 all chasing AI and high-performance computing contracts. The Anthropic deal is among the largest validations of that trade to date.
The Anthropic Angle
The transaction also underscores how aggressively AI labs are locking up computing power. For Anthropic, the Riot lease is reportedly its third major compute commitment in three months, part of a procurement spree said to total more than $60 billion as it races to secure capacity against rivals such as OpenAI and Google. The company already leans on Amazon Web Services, Google Cloud, Microsoft Azure, and CoreWeave; turning to a former Bitcoin miner for 191 megawatts signals just how scarce ready-to-energize power and data-center space have become.
The Risks Behind the Rally
The market’s excitement should be weighed against real uncertainties, and a balanced view is essential. The revenue is largely years away: the first tranche is not due until late 2027 and full delivery not until mid-2028, leaving ample room for delays. Building out gigawatt-scale AI capacity is enormously capital-intensive, and miners pursuing this pivot have generally needed to raise substantial debt or equity, a potential source of shareholder dilution that the contract headline does not capture.
The agreement also creates significant customer concentration, with Anthropic accounting for a substantial share of Riot’s announced AI infrastructure commitments. And the stock itself is highly volatile, with a 52-week range of roughly $11 to $30 and a large recent run already behind it.
What to Watch
The 20%-plus extended-hours move shows how strongly the market initially reacted to the announcement, although the longer-term valuation impact will depend on Riot’s ability to finance and deliver the contracted capacity. For now, extended-hours moves are a snapshot, not a settled verdict, and nothing here is a prediction of where the stock trades next.
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