BitFuFu mined 174 BTC in August, a 55.4% jump from July’s 112 coins, but its own treasury barely moved. The cloud-mining operator closed the month holding 1,373 BTC, still 298 coins below its June level, according to its September 3 operating update.
Cloud customers accounted for roughly three quarters of the extra output. Company holdings rose by just 59 BTC over the month, meaning most of the newly mined coins flowed out to users of its hashrate contracts rather than into corporate reserves.
Managed hashrate reached 20.6 EH/s at the end of August, up from 14.2 EH/s a month earlier. Capacity secured in June and July came online during the month, lifting production across both self-mining and customer-facing contracts. CEO Leo Lu had told investors in the August 17 earnings release that managed hashrate was back near 20 EH/s by mid-August, and the September update confirms the full-month effect.
The gap between production and treasury is the part investors are watching. BitFuFu spent millions of dollars worth of bitcoin earlier this year on compute capacity deals, and a CryptoSlate analysis in August noted that those purchases coincided with falling output and thin disclosure about how the deals were financed. The new figures show production recovering, but the company has not said when or how the coins spent on expansion will be replaced.
The cloud mining model explains part of the arithmetic. Customers pay for a share of hashrate and receive the coins their share produces. BitFuFu earns fees and keeps whatever portion of output its contracts reserve for the house. Fast customer growth therefore lifts reported production and revenue without adding to corporate holdings at the same rate. About 74% of the August production increase came from cloud customers.
Why miners are emptying their vaults
BitFuFu is not alone in this position. Publicly listed bitcoin miners have been liquidating treasuries to fund a pivot toward AI and high-performance computing. CoinShares reported that the weighted average cost to produce one bitcoin among public miners reached about $79,995 in the fourth quarter of 2025, while bitcoin traded in the $68,000 to $70,000 band around the start of the year, making mining itself loss-making for many operators. Analysts put the loss at roughly $19,000 per coin produced.
More than $70 billion in AI and HPC contracts have been announced across the sector. Core Scientific agreed to a $10.2 billion deal with CoreWeave, and TeraWulf carries $12.8 billion in contracted HPC revenue. Companies that once accumulated bitcoin now sell it to pay for data center conversions. Bitdeer reduced its treasury to zero earlier this year, Core Scientific has been selling down its holdings, and Riot Platforms sold 1,818 BTC worth $162 million in a single month. Marathon, the largest public holder at over 53,000 BTC, quietly expanded its policy to allow sales from its entire balance sheet reserve, a change that surfaced in its annual filing.
The industry that entered this cycle as a group of companies securing the network and hoarding coins is exiting it as a group of data center developers that mine on the side. That shift has consequences for the network itself. The same firms that secure bitcoin’s proof-of-work are reallocating capital away from it, and if mining economics stay broken, the transition accelerates.
| Metric | July | August |
|---|---|---|
| Production | 112 BTC | 174 BTC |
| Managed hashrate | 14.2 EH/s | 20.6 EH/s |
| Company holdings | Falling | 1,373 BTC, up 59 |
| Cloud share of growth | About 74% |
The table shows the shape of the recovery. Output and capacity rebounded together, while holdings recovered only a fraction of what was spent. At recent prices, 298 BTC is a meaningful sum for a company of BitFuFu’s size, and the payback period on the compute deals remains undisclosed.
Cloud mining changes the economics further. When customers buy hashrate, they receive the coins their contracts produce, and the operator’s margin comes from fees and its retained share of output. Rapid customer growth can therefore look like strength in production headlines while leaving the balance sheet no better off than before. It also concentrates risk: if customers churn or demand for hashrate contracts falls, the operator is left carrying fixed capacity costs without the contracted revenue.
The price backdrop complicates everything
Bitcoin has been sliding back from its August run. After touching nearly $79,000 in early September, the coin pulled back to the mid-$77,000 range, and US spot ETFs logged three straight sessions of outflows after a $3.8 billion inflow stretch. Traders have repriced the odds of a Federal Reserve rate hike to near 70%, and rising Treasury yields put pressure on risk assets across the board. Mining stocks have fallen harder than the coin itself on risk-off days this month.
That backdrop matters for BitFuFu’s strategy. The company spent coins when they were worth more to buy capacity that will pay back over years. A weaker coin makes the trade harder to defend on the way in and the returns slower to materialize. If the AI contracts deliver contracted revenue on schedule, the math eventually works. If they slip, the coins are gone and the returns have not arrived.
What to watch next
The September update is unaudited, and disclosures on the compute spending have been limited. Investors who treat miners as treasury vehicles typically want coins per share to hold steady or rise. For BitFuFu, the next few monthly updates will show whether the rebuilt capacity replenishes reserves or whether expansion keeps running ahead of accumulation.
Three numbers are worth tracking from here. First, monthly holdings: a sustained climb above 1,400 BTC would suggest the house share of output is finally outrunning spending. Second, the ratio of cloud-customer output to company output, which shows whether growth is serving shareholders or only customers. Third, any disclosure on the compute deals themselves, including counterparty, term, and expected return. Until then, the company is producing more, hosting more customers, and holding less than it did in June. That is the 2026 mining sector in a single balance sheet, and BitFuFu’s next updates will show whether the model closes the gap it opened.