MARA shrinks its bitcoin hoard 34% as miners turn sellers in a thin spot market

MARA Holdings closed the first half of 2026 holding fewer than 36,000 bitcoin, a 34% drawdown from its previous stash, after the company converted part of its treasury into cash to keep funding a capacity build-out during a prolonged price slump. The number was reported by CryptoBriefing on 7 August and confirmed in MARA's second-quarter results a day earlier, which showed a swing to a quarterly loss even as bitcoin production rose to its highest in more than a year.

Three things are now happening at once in the bitcoin market. Public miners are selling into a thin tape. Futures desks are doing the heaviest volume on record against that same tape. And a contested protocol change threatens to confuse ownership for anyone who moves coins this weekend. Taken together, the data suggest a market in which the marginal seller is no longer a retail panic-veteran but a balance-sheet operator, and in which the marginal buyer is leveraged, off-spot and concentrated on a single venue.

Treasury miners, forced sellers

MARA's first-half disclosures are the clearest signal of the new regime. According to CryptoBriefing's summary of MARA's filing on 7 August, the company ended June with under 36,000 BTC on its balance sheet, down 34% from the start of the year. Cointelegraph's separate reporting on the Q2 results the same day attributed the loss to a 28% drop in the average price of bitcoin during the quarter, even as MARA reported its highest quarterly production in more than a year. The pattern is the one operators have warned about for two cycles: when hashprice falls below the marginal cost of power, the treasury becomes the working-capital facility.

BitFuFu, the bitcoin-mining and hosting arm of crypto-financial group Bit Digital, executed the same playbook more openly. CryptoBriefing reported on 7 August that the firm had cut its bitcoin holdings specifically to fund expansion of its mining fleet. Read together with MARA, two of the listed miners that publish treasury updates are now selling the asset they mine rather than accumulating it. The sources do not specify how representative this is of the broader public-miner cohort, but the directional read is consistent: capacity expansion is being financed out of inventory rather than out of equity.

Binance prints a futures-versus-spot wedge

On the same day, the venue that anchors global bitcoin liquidity recorded the widest gap between futures and spot volumes on record. Cointelegraph's 7 August report put Binance's daily futures volume at nearly $58 billion, roughly eight times its spot flow, a divergence CryptoBriefing flagged the same morning as the largest on the exchange. Two things follow from that print.

First, price discovery is migrating. When perp open interest crowds out spot turnover, the price that prints on the tape is set by leveraged positioning and funding rates more than by physical coin passing between wallets. Second, the inventory that miners and other treasuries are releasing is being absorbed by a buyer set that is structurally short-duration and willing to flip fast. That combination is the classic precondition for a sharp basis blow-up if spot liquidity suddenly reasserts itself.

A fork hangs over the weekend tape

On top of the flow imbalance, a procedural threat sits over any bitcoin holder who moves coins before chains separate. Coindesk reported on 8 August that, under the BIP-110 fork proposal, anyone who signs a transaction on a minority fork chain this weekend could see that signed transaction replayed on the main bitcoin network. The practical effect is that selling fork-chain coins could end up selling real BTC. A developer quoted in the Coindesk piece told holders that the safest posture until the chains separate is to do nothing.

For miners already liquidating inventory, the fork risk is mostly a nuisance: their sales are denominated in BTC, not in a forked unit. For an institutional desk holding coins across venues, it is the difference between a normal weekend and a weekend in which a routine withdrawal can drain the parent-chain treasury. CryptoBriefing's coverage of the same fork window on Telegram noted the same caution. The sources do not specify which exchanges have disabled withdrawals over the weekend or which custody providers have begun chain-segregation procedures.

What the macro frame is now

Set against that, the macro frame is unusually political. On 7 August, CryptoBriefing relayed remarks attributed to Donald Trump in which he argued that bitcoin eases pressure on the US dollar, a claim the White House has previously endorsed as part of a broader pro-crypto posture. By 5 August, CryptoBriefing had already noted bitcoin rebounding past $64,000 as the S&P 500 set fresh all-time highs. The juxtaposition matters: a market that the US executive treats as a strategic asset is being absorbed primarily by leveraged perp books on a single venue, while the public miners who once acted as the asset's long-term accumulators are now its most consistent sellers.

The counter-narrative, fairly stated, is that miner selling is the natural life-cycle of a maturing asset. As the network's economics mature, public-miner treasuries behave more like oil-company reserves than like central-bank vaults: inventory rises and falls with capex. On that reading, MARA and BitFuFu are not capitulating, they are normalising. The reading Monexus finds more consistent with the print, however, is the harder one. When the listed accumulators shrink and the dominant venue's price prints eight times more futures than spot, the price is being set by a thinner, faster crowd than at any previous point in the cycle. The fork window does not change that, but it does raise the cost of being wrong about which chain a withdrawal lands on.

What to watch

Three dates anchor the next move. The fork resolution window closes on Sunday, after which the chains should be cleanly separable and the replay risk should fall. MARA's Q3 production update, due in October, will show whether the company is still in net-selling mode or has returned to net accumulation. And Binance's daily futures-to-spot ratio, currently running at roughly eight to one, is the single best gauge of whether the leveraged bid that has absorbed miner selling is thickening or thinning. If that ratio compresses while miner selling continues, the basis does the work the perp book has been doing.

The uncertain part remains straightforward. The sources do not specify how much of MARA's 34% drawdown was sold at market versus pledged as collateral, how much of BitFuFu's selling was USD-denominated versus used to acquire new-generation ASICs, or which custody providers have acted on the fork risk before Monday. Each of those gaps is the kind of detail that, in a quiet quarter, does not move the price. In this quarter, they are the ones a leveraged buyer can least afford to leave unanswered.

Desk note: where wire reporting treated MARA's drawdown as a single-company story, Monexus reads it together with BitFuFu's selling, Binance's futures-to-spot wedge and the BIP-110 fork risk as a single market-structure event. The structural point is plain editorial prose: the marginal seller in bitcoin is now a balance-sheet operator, and the marginal buyer is leveraged.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://t.me/CryptoBriefing/18599
• https://cointelegraph.com/markets/mara-swings-to-q2-loss-as-bitcoins-slump-masks-higher-output
• https://t.me/CryptoBriefing/18604
• https://cointelegraph.com/markets/binance-bitcoin-volume-ratio-hits-record-as-futures-outweigh-spot-eight-times-over
• https://t.me/CryptoBriefing/18600
• https://www.coindesk.com/tech/2026/08/08/bitcoin-holders-risk-losing-real-btc-if-they-sell-coins-from-bip-110-fork-says-developer
• https://t.me/CryptoBriefing/18605
• https://t.me/CryptoBriefing/18566