- Bitcoin ETFs attracted $604 million last week, primarily into BlackRock’s fund.
- Institutional support continues for Bitcoin despite market volatility.
- Net inflows for May total $2.64 billion so far.

Bitcoin exchange-traded funds (ETFs) logged a $604 million net inflow during the week ending May 16, 2025, with BlackRock’s iShares Bitcoin Trust leading the charge in the U.S. market.
The continued influx of funds into Bitcoin ETFs underscores robust institutional interest, with implications for market stability and Bitcoin’s price. The inflow streak reflects upticks in Bitcoin investments despite varied market conditions.
Spot Bitcoin ETFs reported notable inflows from May 12 to May 16, spearheaded by BlackRock, which recorded $841.7 million in its iShares Bitcoin Trust. Fidelity observed outflows of $122.2 million, contrasting the overall positive trend.
Significant activity was seen in spot Bitcoin ETFs, particularly from institutional investors.
Grayscale and VanEck also experienced inflows, while ARK 21Shares and others faced outflows, as the landscape adjusted amid fluctuating market dynamics.
“BlackRock has always supported Bitcoin as a viable asset class.” — Larry Fink, CEO, BlackRock
Institutional interests appeared steadfast as cumulative net inflows reached $2.64 billion for May. This trend aligns with Bitcoin’s pricing stability above $100,000, demonstrating potential investor confidence and sustained demand despite temporary outflows in various ETFs.
Spot Bitcoin ETFs have attracted over $41 billion since January 2024, highlighting a consistent pattern of institutional acquisition. Bitcoin remains a favored asset among these vehicles, with long-term investment indicators pointing positively.
The stable demand for Bitcoin via ETFs may support ongoing pricing solidity and restricted supply in the market. Analysts suggest these inflows could lead to strengthening Bitcoin’s dominance further, reinforced by historical precedents and institutional frameworks. Notably, broader market impacts on other cryptocurrencies were limited during this period.