BlackRock Deposits $450M In Bitcoin To Coinbase Prime

BlackRock has transferred 5,847 $BTC, worth approximately $450 million, into the Coinbase Prime custody layer, adding to a growing series of large on-chain movements linked to the world's largest asset manager.

A Pattern of High-Volume Transfers

The move is consistent with activity that blockchain analysts have tracked throughout 2026. BlackRock's transfers to Coinbase Prime typically support the creation and redemption of ETF shares, a routine process that adjusts fund supply based on investor demand. That mechanism means large custody deposits do not necessarily signal selling pressure, but they do reflect the scale at which BlackRock's crypto operations now run.

Earlier examples illustrate just how frequent these transfers have become. In late March, BlackRock deposited 3,061 $BTC worth approximately $206.5 million and 35,642 ETH worth around $73 million into Coinbase Prime, according to Lookonchain data. A week prior, the firm moved 1,133 Bitcoin valued at $78.83 million alongside 15,405 Ethereum worth $32.02 million to Coinbase Prime.

IBIT's Scale Drives the Activity

The underlying driver is the sheer size of BlackRock's spot Bitcoin ETF. IBIT ended Q1 2026 with approximately $55 billion in assets under management, holding more than 800,000 Bitcoin, and recorded net inflows on 48 of 62 trading days during the quarter, capturing an estimated $8.4 billion in net inflows for the period. More recently, BlackRock's iShares Bitcoin Trust absorbed $134.6 million in net inflows on May 7, 2026, lifting its total assets under management to approximately $66.9 billion as Bitcoin approached the $80,000 threshold.

For April 2026 as a whole, IBIT captured $1.71 billion of the $2.44 billion monthly total across US spot Bitcoin ETFs, achieving 70% market share. That dominance underpins the volume of custody activity routed through Coinbase Prime, which serves as the primary institutional custodian for IBIT's underlying Bitcoin holdings.

BlackRock's broader business has also continued to expand. Total revenue grew 27% year-over-year to $6.7 billion in Q1 2026, with $130 billion in total net inflows propelling the company's AUM to $13.89 trillion.

Sources:
Crypto Briefing: BlackRock moves $270M in Bitcoin, Ether to Coinbase as weekly outflows spike
FinTech Weekly: BlackRock Q1 2026 and the institutional Bitcoin story
The Tokenist: BlackRock IBIT sees fresh inflows as BTC nears $80,000