Wallets tied to bitcoin miner MARA Holdings sent 1,000 BTC — roughly $82.8 million — to Binance and Gate over five days, according to on-chain tracker Lookonchain, which flagged the deposits on October 19, 2026. It's the second batch of MARA coins to draw attention this month, after 996 BTC moved to a Galaxy Digital address on October 9. The transfers are not confirmed sales. On-chain data shows the coins arriving at those venues. It doesn't show what happened next.
What the deposits actually prove
That distinction matters. Coins sent to an exchange can be sold, but they can also be posted as collateral, parked with a custody provider, or shuffled for operational reasons. Galaxy Digital could be handling a sale, or it could be acting as an over-the-counter desk or custodian. Nobody outside MARA knows from the wallet activity alone.
The company hasn't said what the transfers were for. Its third-quarter results, which haven't landed yet, should at least show how much bitcoin MARA actually disposed of during the period. Until then, the on-chain trail is suggestive and nothing more.
A miner that's been selling all year
MARA's appetite for selling bitcoin is well established. The company unloaded 15,133 BTC in March to buy back convertible debt, and in the second quarter it sold 2,213 BTC at an average price of $73,078. Its Q2 shareholder letter said it expects to keep selling opportunistically.
At the end of June, MARA held 35,577 BTC, and 9,270 of those were loaned out or pledged as collateral. Against that stockpile, the latest 1,000 BTC is about 2.8% of June holdings — not a fire sale, but not nothing either. The earlier October transfer to Galaxy is the one that reads more like a deliberate disposals channel than an exchange deposit.
Miners have been heavy sellers
MARA isn't alone. Public miners sold a record 32,000-plus BTC in the first quarter, according to BeInCrypto. On October 16, Lookonchain flagged Hut 8 depositing 1,589 BTC — worth $130 million — across several exchanges over two days. When several large miners are moving coins to venues in the same month, the market tends to read it as supply pressure, whether or not that's the intent.
The timing isn't ideal. Bitcoin is down 1.18% since October 1 and sits about 34.5% below its all-time high of $126,080 from October 6, 2025. BeInCrypto has flagged thin liquidity, weaker ETF demand, and war risk as October headwinds. At press time, bitcoin was trading at $82,573, up 1.07% in 24 hours. Broader markets were steadier: Nasdaq 100 futures gained 1% and S&P 500 futures rose 0.7% earlier Monday, recovering from last week's chip selloff, while Brent crude touched $110 on Friday before falling back to $107.95 a barrel.
The quarter that will tell
MARA's Q3 filing is the next hard data point. It should show whether the October deposits were sales, collateral postings, or custody moves — or some mix of all three. Until those numbers are out, the wallet activity is a lead, not a conclusion. The company's own stated policy of selling opportunistically means the market already expects some of this. The question is whether the scale matches what the deposits imply.
