IREN Shares Drop as AI Data Center Pivot Costs Outpace Bitcoin Mining Revenue

IREN Ltd. CoinGecko data shows shares slid 12% in pre-market trading Thursday after the Sydney-based miner revealed its pivot to artificial intelligence infrastructure is consuming cash faster than Bitcoin mining can replenish it. The company reported AI cloud revenue of $41.2 million for the quarter ended June 30, edging past Bitcoin mining revenue of $39.8 million for the first time since the strategic shift began in 2023. The crossover arrives as network difficulty climbs to 92.67 trillion, a record high that squeezes revenue per terahash even as Bitcoin holds near $78,000. IREN's operating hashrate reached 28.5 exahashes per second in June, up 18% quarter-over-quarter, but the revenue per exahash fell 7% as difficulty outpaced deployment. per CoinGecko, CoinGecko has Bitcoin at $77,971 with 24-hour volume of $36.8 billion. ## Conversion economics strain balance sheet IREN's retrofit program spans its Childress, Texas; Weslaco, Texas; and Sweetwater, Texas sites, where the company is installing liquid-cooled GPU clusters for AI workloads. Figures from the desk show capital expenditure guidance for fiscal 2025 was lifted to $300 million from $220 million, with $180 million earmarked for AI infrastructure. CoinGecko data shows the remaining $120 million funds Bitcoin miner fleet upgrades and site power capacity expansions. Each megawatt of AI-ready capacity costs $4.2 million to build versus $1.8 million for traditional Bitcoin mining, per the company's investor presentation. The higher density requires liquid cooling, redundant power, and fiber connectivity that legacy sites lack. per CoinGecko, iREN secured a $150 million senior secured credit facility in March at SOFR plus 3.75% to fund the buildout. ## Miner behavior shifts toward holding On-chain data shows IREN's wallet cluster reduced monthly Bitcoin sales to 12% of production in June from 35% in March, suggesting the company is retaining more coins to fund conversion costs without diluting shareholders. Figures from the desk show the firm held 3,842 BTC as of June 30, valued at approximately $299 million at current prices. Peer miners Marathon Digital and Riot Platforms maintained sell ratios above 60% in the same period. ## Historical precedent for hash-rate reinvestment The 2020 halving cycle saw similar dynamics when miners plowed block-reward windfalls into next-generation ASIC fleets. Companies that front-loaded capital expenditure, notably Marathon and Riot, captured disproportionate hashrate share in the subsequent bull market. IREN's AI pivot represents a different bet: converting energy contracts and land positions into compute leases that command 3-5x the revenue per megawatt of Bitcoin mining at current rates. ## What to watch next The September quarter will test whether AI cloud revenue can sustain its lead over Bitcoin mining as seasonal power prices decline in Texas. IREN has contracted 85% of its 2025 AI capacity at fixed rates averaging $0.042 per kilowatt-hour, shielding margins from ERCOT volatility. Investors should monitor the company's Bitcoin production cost per coin, currently $28,400, against the $78,000 spot price to gauge mining cash flow available for AI reinvestment.