Key Takeaways
- Bitcoin ETFs command $126.8 billion in total net assets, or 5.97% of BTC’s market cap.
- BTC is currently trading around $106,000; ETH is trading at $2,550.
- Ethereum ETFs hold $8.7 billion in net assets, representing 2.87% of ETH’s market cap.
Bullish optimism has investors flocking to U.S. spot Bitcoin (BTC) exchange-traded funds (ETFs) in May as monthly inflows soar past $3.6 billion.
Having lagged behind their BTC counterparts, Ethereum (ETH) ETFs have seen some modest inflows in May, making it their best-performing month in 2025.
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Bitcoin ETFs
As per data gathered by SoSoValue, Bitcoin ETFs posted $329.02 million in net inflows on May 20, raising this week’s net inflows to $996.46 million.
So far in May, BTC funds have garnered $3.63 billion in monthly net inflows, surpassing April’s $2.97 billion, and entirely reversing the $4.6 billion outflows recorded between February and March.
BlackRock’s top-performing fund, the iShares Bitcoin Trust (IBIT), leads inflows for May 20, pulling in $287.45 million. Its cumulative net inflows now stand at $46.15 billion, commanding $67.9 billion in net assets.
Fidelity’s Wise Origin Bitcoin Fund (FBTC), the second-best performing fund, garnered a modest $23.26 million in net inflows. FBTC has tallied $11.81 billion in cumulative net inflows and holds $21.33 billion in net assets.
As for the smaller gainers, the ARK 21Shares Bitcoin ETF (ARKB) notched $6.36 million, the Grayscale Bitcoin Mini Trust netted $6.16 million, and the Bitwise Bitcoin ETF (BITB) took $5.78 million in net inflows.
Ethereum ETFs
According to SoSoValue, ETH funds have tallied a modest $64.89 million in daily total net inflows as of May 20, 2025.
This brings May’s cumulative total net inflows to $108.58 million, making May their most successful month since January’s $101.16 million.
As ever, BlackRock’s iShares Ethereum Trust (ETHA) took the lead, drawing $45.04 million in daily net inflows.
It’s the leading ETH ETF by far, having recorded $4.32 billion in cumulative net inflows and commanding $3.24 billion in net assets.
It’s followed by the second-best performing Ethereum fund, Fidelity’s FETH, which tallied $19.85 million in net inflows.
It ranks just under ETHA with $1.43 billion in cumulative net inflows, and now holds a square $1 billion in net assets.
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