BlackRock Modifies Bitcoin, Ethereum ETFs with New Amendments

BlackRock, the world’s largest asset manager, recently amended its Bitcoin (IBIT) and Ethereum (ETHA) ETFs, reflecting significant changes in the cryptocurrency market. These updates were confirmed through regulatory filings in September 2025.

BlackRock’s recent amendments to its IBIT and ETHA ETFs come amid changes in asset flows and regulatory developments. Consistent with historical trends, these amendments reflect shifts in institutional appetite for regulated crypto products. BlackRock, under the leadership of its iShares division, has not made public statements about the changes. However, regulatory filings such as SEC Form 13F confirm these amendments. The world’s largest asset manager aims to enhance its product offerings, with previous recommendations for a 1-2% Bitcoin allocation.

The effects of the ETF adjustments include increased inflows to Ethereum products, surpassing Bitcoin for the first time. BlackRock’s crypto ETFs have contributed significantly to its revenue, with IBIT experiencing a 403% year-over-year increase in holdings. Recent data shows Ethereum ETFs receiving more inflows, suggesting a shift in institutional interest. BlackRock’s influence on the ETF market remains substantial, with reporting indicating material shifts in liquidity and market exposure.

Larry Fink, CEO, BlackRock, “We believe digital assets such as Bitcoin and Ethereum have a place in core portfolios and we are committed to expanding regulated investment avenues for our clients.” Source

In the broader financial landscape, the increased institutional focus on Ethereum over Bitcoin could influence asset strategies. These developments may encourage volatility in the cryptocurrency markets as traders adjust their positions. With total ETF net assets soaring to over $150 billion, the impact on Bitcoin’s market cap and liquidity is evident. Historical precedents indicate that BlackRock’s endeavors in the crypto market often precede broader market shifts, underscoring its central role in shaping crypto access through regulated channels. By formalizing these ETF amendments, BlackRock not only reaffirms its commitment to digital assets but also sets the stage for further developments in the regulated crypto investment sphere.