- BlackRock sold about $151.4 million in ETH and bought roughly $289.8 million in BTC, according to Arkham data.
- Bitcoin spot ETFs recorded about $301.3 million in net inflows on September 3 while Ethereum funds saw net outflows.
BlackRock rotated digital asset exposure this week, selling approximately $151.4 million worth of Ether and purchasing about $289.8 million of Bitcoin, according to on-chain attributions published by analytics firm Arkham.
Arkham identifies $151.4 million ETH sale and $289.8 million BTC purchase
Arkham attributed the flows to addresses linked to BlackRock and reported that the value of Bitcoin acquired was nearly double the proceeds from Ether sales. The activity indicates a shift in positioning between the two largest cryptoassets by market value, with Bitcoin exposure rising as Ether holdings declined.
Arkham previously disclosed wallets associated with several US spot Bitcoin ETF issuers, providing a basis for tracking subsequent movements across those addresses.
ETF dashboard shows $301.3 million Bitcoin inflows as Ethereum funds record net outflows
Separate ETF flow data show a concurrent divergence in fund demand. On September 3, US spot Bitcoin ETFs posted an estimated $301.3 million in net inflows, while US Ethereum products registered net outflows of roughly $135.3 million.
These figures align with the rotation observed on-chain and point to incremental institutional demand for Bitcoin compared with Ethereum over the period.
BLACKROCK IS SELLING $150M ETH
But they bought DOUBLE that of BTC.
BlackRock sold $151.4M $ETH and bought $289.8M of $BTC. pic.twitter.com/qusyjXvCtW
— Arkham (@arkham) September 4, 2025
The ETF complex remains a primary conduit for US institutional exposure to crypto. Aggregate activity across vehicles such as the iShares Bitcoin Trust has been closely watched by professional investors as a gauge of allocators’ sentiment and liquidity.
Daily dashboards that collate individual issuer flows, volumes and net assets offer a near real-time picture of demand across the product set and contextualize single-day moves against cumulative trends since launch.
For portfolio managers, reallocations of this scale can reflect risk budgeting, liquidity preferences and changing macro assumptions. The latest transactions reduce Ether’s share of BlackRock’s observed crypto positions and increase its Bitcoin allocation.
Market participants will parse subsequent disclosures and address-level updates to determine whether the shift represents a tactical rebalance around ETF primary market activity or a more durable reweighting of digital asset exposure.
While on-chain and ETF flow data provide transparency, they do not capture the rationale behind allocation decisions. Further updates from fund filings and daily creations and redemptions will indicate whether the rotation persists through the week and how it maps to net asset changes across the issuer lineup.
At the time of this update, Bitcoin is trading at $111,557.00, reflecting a $1,061.00 increase (approximately +0.96 %) from the previous close. According to CoinGecko, the exact 24-hour change on September 5, 2025 was +$961.82, putting the price at $111,604.00 for that day.
