BlackRock's Bitcoin Exchange-Traded Fund exceeds $91 billion Assets Under Management despite Bitcoin's price decline - Insights
U.S. Spot Bitcoin and Ethereum ETFs See Record Growth
As of late August 2025, top performers in the U.S. spot Bitcoin and Ethereum ETF market show significant asset inflows and holdings.
Bitcoin Spot ETFs
The total assets under management (AUM) for spot Bitcoin ETFs surged to a record $134.6 billion in Q2 2025. Institutional inflows in Bitcoin ETFs totaled $33.6 billion in Q2 2025, with major holders like Brevan Howard Capital Management (~$2.3 billion) and Harvard Endowment (~$117 million). Recent inflows over the past 30 trading days added approximately $6.1 billion to Bitcoin ETFs.
Ethereum Spot ETFs
Spot Ethereum ETFs attracted even more inflows recently, with about $7.8 billion added over the past 30 days, outpacing Bitcoin ETFs. Ethereum ETFs now represent 26% of the total crypto ETF assets, compared to Bitcoin’s 11%. Nine spot Ethereum ETFs are approved and actively trading, with fees ranging mainly between 0.15% and 0.25%, including notable ones such as Grayscale Ethereum Mini Trust (ETH), Franklin Ethereum Trust (EZET), and iShares Ethereum Trust (ETHA). Ethereum ETFs saw $625 million inflows in one recent week amid strong price performance (ETH surged 15%).
This data comes from multiple authoritative sources including NerdWallet, Bitwise, Coin World, Talos, and 99Bitcoins reviewed between July and August 2025.
Other notable facts include:
- Bitcoin dropped from near $124,000 to below $119,000, erasing over $930 million in leveraged BTC positions and triggering more than $1 billion in overall crypto liquidations.
- The iShares Bitcoin Trust holds 3.72% of all circulating Bitcoin.
- By mid-July 2025, cumulative inflows for IBIT had exceeded $80 billion.
- Ark Invest's ARKB and Bitwise's BITB have smaller market shares, with $5.58 billion and $5.02 billion in assets, respectively.
- IBIT closed at $69.84 per share on the 13th of August, 0.57% above its net asset value.
- BlackRock's iShares Ethereum Trust (ETHA) led the charge in U.S. spot Ethereum ETFs.
- The iShares Bitcoin Trust has seen total net inflows of $58.04 billion as of the 13th of August.
- U.S. spot Ethereum ETFs surpassed even their Bitcoin-focused rivals in net inflows on the 11th of August.
- Ethereum [ETH] seized the spotlight on Wall Street, with U.S. spot ETH ETFs raking in a record-breaking $1.019 billion in net inflows on the 11th of August.
- At press time, IBIT reported 54.82 million outstanding shares, valued at a combined $3.79 billion.
- BlackRock's iShares Ethereum Trust (ETHA) surpassed $10 billion in cumulative net inflows, doubling its previous $5 billion tally in just three months.
- IBIT has attracted both institutional giants and retail investors.
- BlackRock's iShares Bitcoin Trust (IBIT) has reached an unprecedented $91.06 billion in assets under management.
- IBIT was launched in January 2024 and has seen explosive growth.
- The recent turbulence in Bitcoin's price is attributed to hotter-than-expected U.S. PPI data.
The table below provides a summary of the key findings:
| Asset Class | Approximate Total AUM (Q2 2025) | Recent Inflows (30 days) | Market Share of Crypto ETFs | Notable Holders / Facts | |-------------|---------------------------------|-------------------------|-----------------------------|------------------------| | Bitcoin Spot ETFs | $134.6 billion (Q2 2025) | +$6.1 billion | 11% | Institutions like Brevan Howard (~$2.3B), Harvard (~$117M) | | Ethereum Spot ETFs | (Exact AUM not stated but large) | +$7.8 billion | 26% | 9 active ETFs (0.15%-0.25% fees); strong price rally and inflows |
- Bitcoin Spot ETFs, currently managing $134.6 billion in assets, experienced a significant surge in Q2 2025, with major institutional holders like Brevan Howard Capital Management and Harvard Endowment, contributing approximately $33.6 billion and $117 million, respectively.
- In the realm of crypto ETFs, Ethereum Spot ETFs now hold a 26% market share, surpassing Bitcoin's 11%, and recently attracted around $7.8 billion in inflows over the past 30 days.
- One of the notable Ethereum Spot ETFs, Grayscale Ethereum Mini Trust (ETH), joins Franklin Ethereum Trust (EZET) and iShares Ethereum Trust (ETHA) among those actively trading.
- Amid strong price performance, Ethereum ETFs saw notable inflows, with Ethereum [ETH] seizing the spotlight on Wall Street, raking in a record-breaking $1.019 billion in net inflows on the 11th of August, outpacing Bitcoin ETFs.
