BlackRock made a major crypto portfolio adjustment on September 3, selling $151 million worth of Ethereum while purchasing $290 million in Bitcoin. The move marks a clear shift in the world’s largest asset manager’s crypto strategy.
Data from Arkham Intelligence and SoSoValue ETF tracking confirmed the reallocation. BlackRock’s iShares Ethereum Trust (ETHA) recorded a $151.39 million outflow on the same day its iShares Bitcoin Trust (IBIT) saw a $289.84 million inflow.
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 on-chain data matched ETF flow reports exactly. This rare alignment between blockchain transfers and fund flows confirms BlackRock actively moved capital from Ethereum to Bitcoin in a single day.
Bitcoin ETFs enjoyed strong performance this week with $332.7 million in total inflows through September 2. Fidelity’s Bitcoin fund led with $132.7 million in inflows, while BlackRock’s IBIT added $72.8 million that day.
The September flows reversed August trends when Ethereum ETFs attracted $3.87 billion in new money. Bitcoin funds lost $751 million during the same period, making the recent turnaround more striking.
Market expectations for Federal Reserve rate cuts reached 87% probability for the September meeting. This dovish outlook appears to be spurring institutional appetite for Bitcoin’s digital asset exposure.
Analysts link the Bitcoin rally to sustained institutional inflows and macroeconomic optimism. Rate cut expectations typically boost demand for risk assets like cryptocurrencies.
Recent CoinSwitch Markets data showed Bitcoin ETFs captured $507.5 million in weekly inflows. The gains were partly attributed to growing Fed easing expectations among institutional investors.
Both crypto prices declined following BlackRock’s rebalancing despite the positive flow data. Bitcoin dropped 2.09% to $109,422 while Ethereum fell 3.29% to $4,306.
The price declines occurred even as institutional money flowed into Bitcoin products. This suggests short-term selling pressure may have offset the positive ETF demand signals.
BlackRock’s move highlights growing institutional preference for Bitcoin over Ethereum. The firm’s Bitcoin ETF now holds $58 billion in cumulative assets compared to $12.97 billion in its Ethereum fund.
Other Ethereum ETFs showed mixed results on September 3. Fidelity’s FETH gained $65.78 million while Bitwise’s ETHW added $20.81 million, but these inflows were dwarfed by BlackRock’s massive outflow.
The rebalancing created one of the biggest single-day ETF redemptions in months. It also generated some of the strongest Bitcoin fund commitments of the year.
Both assets maintain strong yearly performance with Bitcoin up over 90% and Ethereum gaining 77%. However, the immediate trading session showed Ethereum bearing sharper losses.
BlackRock previously bought $300 million in Ethereum, making the recent $151 million sale a clear strategy reversal. The firm also recently sold $111 million in Bitcoin and $254 million in Ethereum in earlier moves.
The latest data from September 3 shows BlackRock’s Bitcoin Trust adding $289.84 million while its Ethereum fund shed $151.39 million in the same 24-hour period.
The post BlackRock Sells $151M Ethereum, Buys $290M Bitcoin as Institutional Flows Shift appeared first on CoinCentral.
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