TLDR
- BlackRock sold $311.6 million worth of Ethereum this week.
- The firm redirected $289.8 million into Bitcoin investments.
- Ethereum’s price dropped by approximately 3.29% post-sale.
BlackRock, the world’s largest asset manager, has reportedly sold over $300 million worth of Ethereum (ETH) this week. This move marks a significant shift of institutional capital from Ethereum to Bitcoin (BTC), according to primary on-chain and ETF data. The transactions took place between September 3 and September 6, 2025.
The transition has resulted in noticeable volatility and trading flows in both ETH and BTC markets. As reported by Arkham Intelligence on X, BlackRock sold $151.4 million worth of ETH and purchased $289.8 million worth of BTC.
BlackRock’s Historical Involvement in Crypto
BlackRock, under the leadership of CEO Larry Fink, is known for its significant presence in the digital asset market. The company launched the iShares Bitcoin Trust (IBIT) and the iShares Ethereum Trust (ETHA) ETFs in 2024, quickly becoming one of the largest holders of these assets through regulated funds.
Despite its strong involvement, there have been no direct public statements from BlackRock executives regarding this recent sell-off. However, ETF flow data and blockchain analytics provide evidence of this significant reallocation of assets.
Impact on Ethereum and Bitcoin
Approximately $311.6 million worth of Ethereum was sold, with a similar amount redirected into Bitcoin. This move saw a $151.4 million outflow from the iShares Ethereum Trust and a $289.8 million inflow into the iShares Bitcoin Trust on September 3, 2025.
BlackRock’s Bitcoin ETF, IBIT, currently holds $58 billion in assets under management (AUM). In contrast, the Ethereum ETF, ETHA, holds approximately $12.97 billion post-redemption.
On-Chain Data and Market Reactions
Data from Arkham Intelligence and Glassnode has confirmed the large-scale Ethereum outflows. Increased ETH was sent to exchanges, triggering local price declines. Both Binance and Coinbase showed spikes in ETH sell volumes, with ETF outflows reported at $309.9 million on September 6.
Following the news, Ethereum’s price dropped by approximately 3.29%, while Bitcoin saw a decline of 2.09%. Historically, large institutional sales of ETH, such as those in April 2024 and September 2023, have led to short-term price drawdowns of 5-10%.
Community and Developer Insights
The market is speculating whether BlackRock’s move is a macro-hedge or a tactical rebalance ahead of potential Federal Reserve rate changes. Ethereum developer discussions on platforms like Discord and GitHub have centered on protocol upgrades, with minimal comments on ETF outflows.
Debates on whether Ethereum’s lower staking yields post-upgrade contributed to this reallocation are ongoing. Despite the significant shifts in asset allocations, no stakeholders have issued formal public statements. However, the authenticity and scope of BlackRock’s reallocation are well-documented in both blockchain analytics and ETF data.
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