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BlackRock moved roughly $1 billion worth of crypto in just 48 hours, scooping up 11,098 Bitcoin and 132,769 Ethereum according to on-chain data tracked by Arkham Intelligence. The figures are eye-catching, but the mechanism behind them matters more than the number itself.
These purchases flow through BlackRock’s spot ETF products, the iShares Bitcoin Trust (IBIT) and iShares Ethereum Trust ETF (ETHA), meaning they’re driven by investor demand for ETF shares rather than some boardroom decision to load up on crypto. When investors buy shares of IBIT or ETHA, the fund needs to acquire the underlying assets to back those shares. That’s what happened here.
How the ETF plumbing actually works
BlackRock isn’t placing speculative bets on token prices. It’s fulfilling its obligation as an ETF issuer to match share creation with actual asset purchases.
BlackRock’s ETF operations have been consistently active throughout 2026. In July, IBIT alone reported $183 million in inflows from client purchases of Bitcoin exposure. On the Ethereum side, in June 2026, the firm sold 3,671 BTC worth approximately $230 million while simultaneously purchasing 10,566 ETH valued at around $17.7 million, part of what appeared to be a rebalancing strategy tied to ETF redemption and creation flows.
The on-chain trail
Arkham Intelligence, the blockchain analytics platform that surfaced these transactions, has become the go-to tool for tracking institutional wallet activity. The platform tags known wallets belonging to major entities, making it possible to see when BlackRock’s custodial addresses move assets.
Earlier in 2026, BlackRock transferred approximately 3,290 BTC (worth roughly $298 million) and 5,692 ETH (around $18 million) to Coinbase Prime, the institutional custodial arm of Coinbase. Coinbase serves as the primary custodian for both IBIT and ETHA, meaning large on-chain movements between BlackRock-tagged wallets and Coinbase Prime addresses are routine.
What the inflow pace signals
ETF inflows are a leading indicator of institutional sentiment because they represent capital that has already cleared compliance desks, advisory approvals, and allocation committees. IBIT consistently leads competing Bitcoin ETFs in terms of assets under management and daily volume. Every share created requires real crypto to be purchased and held in custody, removing supply from the open market.
Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.
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