VanEck researcher disputes claim that MARA bought 1,000 BTC, says coins were returned collateral as miner shifts into AI
A viral on-chain alert that suggested Bitcoin miner MARA Holdings had added 1,000 BTC to its treasury was likely misread, VanEck’s Head of Digital Assets Research Matthew Sigel said on June 16. Sigel argued the coins were returned collateral from a BTC-backed loan — not a fresh market purchase.
The alert came from on-chain analytics account Lookonchain, which flagged a 1,000 BTC transfer involving FalconX and implied it was a new accumulation by the miner. Sigel pushed back on X, saying historical wallet behavior and the transaction’s pattern point to returned-lent assets. “MARA will be monetizing its DC portfolio: Starwood in the US, Exaion in the EU. Bitcoin accumulation is the last thing on their mind,” he wrote, adding that MARA has lent out Bitcoin that was simply returned.
The interpretation is consistent with MARA’s earlier activity and strategic shifts. In Q1 the company sold 20,880 BTC for roughly $1.5 billion at an average price of about $70,137 per coin, a move that coincided with a broader pivot toward artificial intelligence and high-performance computing. Earlier this year MARA closed a roughly $1.5 billion deal to acquire Long Bridge, significantly expanding its AI and data center footprint.
Market observers point out MARA typically moves purchased BTC into newly created wallets; the recent transfer did not follow that pattern, supporting the loan-collateral explanation. Analyst Matt Allen echoed the view that MARA is no longer accumulating Bitcoin in the way many investors assume and is instead prioritizing its AI data center strategy.
Despite the strategic pivot, MARA remains a major corporate holder of Bitcoin. Bitcoin Treasuries shows the firm holds more than 36,000 BTC, ranking it among the largest public Bitcoin treasuries. Investor enthusiasm around the AI/data center play has helped the stock: Yahoo Finance data shows shares up more than 63% year-to-date and rising over 10% in the last five trading sessions.
The episode highlights a broader industry trend: miners are increasingly monetizing power and data-center capacity as alternative revenue sources. Recent moves include IREN’s acquisition of Spain-based Nostrum Group, adding roughly 490 megawatts of secured grid-connected power and seeding its first AI cloud services base in Europe. At the same time, heavy capital flows into AI infrastructure — Nvidia is reportedly planning a bond offering of at least $20 billion to finance AI investments and refinance debt — underscore how valuable data center and power access have become.
Other mining firms — HIVE Digital, TeraWulf, Hut 8 and CleanSpark among them — have likewise promoted AI and high-performance computing services, repurposing bitcoin-mining facilities to capture revenue streams less tied to crypto price swings while leveraging existing power agreements and infrastructure.
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