- Bitcoin ETFs saw $254.91M in daily inflows, led by iShares’ 2,250 BTC addition.
- Ethereum ETFs added 27,202 ETH daily, but Fidelity and Grayscale saw weekly outflows.
- Total holdings reached 1.17M BTC and 3.47M ETH, reflecting mixed fund-specific flows.
Exchange-traded funds (ETFs) tracking Bitcoin and Ethereum posted positive net flows as of May 15, 2025. Data shows a combined increase in fund holdings despite contrasting performance across individual issuers.
Bitcoin ETFs registered a daily net inflow of 2,494 BTC, equivalent to approximately $254.91 million. Weekly flows were higher, totaling 6,261 BTC or about $640.05 million across the market. The iShares Bitcoin Trust (IBIT) was the largest contributor to the daily inflows, receiving 2,250 BTC worth $229.96 million. Over seven days, IBIT increased its holdings by 7,067 BTC.
As of May 15, IBIT holds 627,986 BTC, valued at $64.19 billion. The strong accumulation has kept it in a leading position among spot Bitcoin ETF products. However, other issuers presented a different trajectory. The Grayscale Bitcoin Trust (GBTC) reported a net outflow of 1,009 BTC over the week. Invesco Galaxy also posted a single-day outflow of 149 BTC.
Meanwhile, ARK 21Shares and Fidelity showed minor inflows, though they did not significantly impact the aggregate figures. Based on reported data, total Bitcoin ETF holdings across all products currently stand at around 1.17 million BTC.
Ethereum ETF Market Sees Net Daily Gains Despite Fund-Specific Outflows
Ethereum ETFs collectively reported a daily net inflow of 27,202 ETH, representing approximately $68.66 million in added value. Weekly flows, however, were lower at 19,984 ETH, showing that not all inflow trends extended throughout the week.
In the Ethereum ETF market, the iShares Ethereum Trust (ETHA) saw the most gains, with daily inflows of 22,097 ETH. ETHA gained 28,347 ETH this week, bringing its holdings to 1,281,114 ETH with a value of $3.23 billion.
While ETHA grew its reserves, several other funds withdrew. In the previous seven days, the Fidelity Ethereum Fund lost 10,241 ETH. During the same time span, ETHE outflowed 4,448 ETH. All Ethereum ETFs currently own about 3.47 million ETH.
Contrasting Movements Highlight Diverging Strategies Among Investors
Even though ETFs hold a larger percentage of Bitcoin and Ethereum, their methods differ, suggesting different approaches to these assets in the industry. Many individuals invest their money in iShares funds, but traditional trusts are losing many investors.
So, many institutional investors consider ETFs a secure way to access the crypto market via a regulated process. A change in the macro strategy or the decision to sell profits or redistribute funds can lead to flow differences.
