Public Bitcoin miners have experienced a dramatic shift in Q2 2026, with combined realized hashrate falling 21.2% from 324.6 EH/s to 255.9 EH/s, according to TheEnergyMag analysis. The Bitcoin network's quarterly average declined from 1,071 EH/s to 957 EH/s over the same period, representing a 10.6% reduction. This marks a significant acceleration from the 13.4% decline observed between Q4 2025 and Q1 2026. The contraction reflects miners' strategic pivot away from Bitcoin mining toward AI and high-performance computing infrastructure, with companies like Core Scientific and TeraWulf now generating over 83% of quarterly revenue from colocation services. Recent research from Duke University reveals that dominating mining for a week costs roughly $6 billion at October 2025 prices, with $4.6 billion for hardware, $1.34 billion for data centre construction and about $130 million a week in electricity - representing 0.47% of Bitcoin's market value today. Unlike China's 2021 ban, which caused a 41% decline, this contraction reflects an economic restructuring rather than forced shutdowns.
Bitcoin miner equities have staged a broad recovery in 2026, with the strongest gains coming from AI and high-performance computing (HPC) infrastructure rather than traditional mining economics. According to reports from AMBCrypto, RIOT gained 83%, followed by HUT at 72%, BITF at 50%, and CORZ at 31%. The rally strengthened from April into June, even as revenue from actual mining activities continued declining, suggesting investors are increasingly valuing miners for their power capacity, grid connections, and data-center assets. As reported by AMBCrypto, companies like RIOT and HUT saw gains of 83% and 72% respectively, as investors value their power and data-center assets. Among the early adopters, TerraWulf, IREN, and Cipher Digital have more than doubled over the past year, while MARA Holdings fell 40% over the same period, reflecting the slide in hashprice from $63 per PH/s in July 2025 to around $31.80 per PH/s currently.
Despite the strong stock performance, underlying Bitcoin mining economics remain severely weak, creating a divergence between stock performance and core operations. The Puell Multiple sits near 0.74, below 1, indicating that revenues remain below their annual average. Bitcoin's price has fallen 49% from October's peak, while the hashrate declined only 23%, keeping competition relatively high and compressing revenue per unit of computing power. Daily Bitcoin miner revenue has dropped by 3X since last October, from $60 million to $20 million, according to AMBCrypto analysis. However, on-chain data reveals surprising resilience, with selling pressure from Bitcoin miners remaining low despite the distressed market conditions. Bitfinex analysts note that the Miners' Position Index at -1.2 shows outflows are subdued, with the Puell Multiple near 0.7 putting revenue below its yearly average. Most of the miner pressure, especially in the first half of 2026, was from public players diversifying into AI infrastructure build-outs, with companies like MARA selling over 23K BTC worth $1.63 billion to reduce debt and pivot to AI. Not surprisingly, an increasing number of miners are finding it unprofitable to continue production and are turning off their machines, a process known as capitulation, with this already being one of the longest capitulation cycles on record.
The shift toward AI infrastructure has become material for several major miners, with colocation revenue now overtaking traditional mining operations. Core Scientific generated $136.7 million of colocation revenue in Q2, almost five times its $27.5 million of bitcoin mining revenue, with colocation supplying 83% of quarterly sales compared to 67% in Q1. TeraWulf followed a similar trajectory, with HPC lease revenue reaching $31.9 million or 71% of total revenue, compared to $12.8 million from bitcoin mining. Riot Platforms reported $23.2 million in data center revenue against $113.7 million from mining, while Bitdeer generated $14 million from AI cloud services versus $197.1 million from mining-related activities. This represents a fundamental transformation from mining-focused operations to infrastructure-based revenue models, with the trend accelerating as miners increasingly rely on AI work to generate over 70% of revenue by year-end. The AI pivot is largely responsible for the 17% drop in hash rate as miners redirect computational power to AI data centers. According to CoinShares first-quarter mining report, miners with HPC contracts trade at 12.3 times their enterprise value, compared with the 5.9 times commanded by pure-play bitcoin miners, with the industry securing a cumulative $70 billion in AI and HPC contracts by the end of that quarter.
Despite the economic pressures, Bitcoin's network has demonstrated remarkable resilience through various stress tests. Computing power on the network has dropped about 33% since October 2025, with Winter Storm Fern forcing US miners to shut down rigs in January and knocking 30% to 40% of computing power offline over a single weekend. Blocks slowed from ten minutes to around twelve, then recovered once power returned. The network has already survived similar challenges, with the US, China and Russia already hosting around 68% of all Bitcoin mining, meaning every miner that switches off leaves the network resting on fewer hands. An attacker would need to outspend every miner at once, costing approximately $5.2 billion according to Charles Schwab, counting hardware, energy and competition costs. While the network faces structural challenges with fees unable to replace block rewards, its ability to absorb significant hashrate losses without missing blocks provides confidence in its long-term stability. There is still a bull case for bitcoin mining, which centers on bitcoin returning to last October's record highs, with CoinShares estimating that a recovery to $126,000 could lift the hashprice back to around $59 per PH/s, substantially improving mining economics and potentially restoring the appeal of pure-play miners.
