Crypto ETF flows followed different paths as products focused on Bitcoin and Ethereum struggled to hold on to investors’ funds, experiencing serious ETF outflows, while Solana and XRP products continued to attract new capital.
Bitcoin spot ETFs were the worst hit with a net outflow of $648.64 million, while Ethereum spot ETFs lost $86.31 million on the same day. However, Solana ETFs managed to pull in $2 million in inflows and XRP ETFs added roughly $750,000 in positive flows.
Bitcoin ETF Outflows Put Pressure on Market Sentiment
Bitcoin ETFs just went through one of their largest single-day withdrawals of the year so far.
The recent outflow extended a reversal that has already erased nearly $1.7 billion from Bitcoin ETF products over the past five trading days.
Several macro factors seem to be pushing investors out of risk assets at the moment and they include renewed inflation concerns, rising Treasury yields and uncertainty over the direction of Federal Reserve policy.
Additionally, the recent US credit downgrade is another factor that’s contributing to a weakening of investor appetite for risk assets.
Bitcoin had briefly bounced back above $81,000 earlier this month when markets got excited about the CLARITY Act, but prices later slipped right back down to the $77,000 range as ETF outflows continued to increase.
Despite the big redemptions, some analysts are saying that long term holders are still showing low sell pressure compared to previous market corrections.

Ethereum ETFs Continue Losing Momentum
Ethereum ETFs also took a hit with a net ETF outflow of $86.31 million. extending a losing streak that has now lasted several sessions.
CoinShares data released this week showed that Ethereum investment products lost out roughly $249 million in weekly withdrawals, their weakest performance since January.
Ethereum’s price also weakened alongside the ETF outflows. After trading at over $2,400 earlier this month, ETH dropped sharply 12% and fell back down to the $2,100 region. Some traders appear to be reducing exposure before things get any tighter.
Unlike Bitcoin, Ethereum still faces additional uncertainty tied to staking regulation and institutional positioning inside ETF structures.
That has made ETH more vulnerable during this risk-off market period.
SOL and XRP ETFs Are Attracting Selective Demand
While Bitcoin and Ethereum funds were bleeding capital, Solana and XRP ETFs were going in the opposite direction.
SOL spot ETFs managed to pick up roughly $2 million in inflows on the same day, while XRP ETFs added around $750,000. The inflows are relatively small compared with Bitcoin’s ETF outflows, but the direction remains important.
It goes to show that there are still some investors who are rotating toward altcoin products rather than abandoning crypto exposure altogether.
CoinShares data from earlier in the week showed that XRP and Solana funds were among the few digital asset products that were still recording positive inflows during the ETF sell-off.
XRP’s continued resilience may have a lot to do with regulatory clarity around Ripple and the ongoing expectation surrounding XRP ETF expansion.
For Solana, investors continue to keep a close eye on institutional interest tied with network infrastructure upgrades and growing adoption across tokenization and trading apps.
Some analysts also believe Solana’s ETF inflows are a sign that investors are after higher-growth crypto assets when Bitcoin’s momentum falters.

What the ETF Split Means for Crypto Markets
The latest crypto ETF flows show a market that remains cautious but not fully bearish.
Bitcoin and Ethereum still dominate institutional crypto allocations; so large ETF outflows naturally weigh on overall sentiment.
However, the fact that Solana and XRP ETFs are still seeing inflows suggests some institutional investors are still searching for opportunities inside certain altcoin sectors.
The market now appears to be tilting toward more selective positioning instead of broad-based crypto buying.
Recent report also showed that most of the ETF outflows came from the United States; while some European and Asia-Pacific markets continued recording modest inflows.
The next major test will likely depend on whether Bitcoin ETF outflows stabilize over the coming sessions or continue accelerating.
If institutions keep pulling out funds, the crypto markets might stay volatile over the short term.
Conclusion
Crypto ETF flows on May 18 revealed a split in digital asset markets. Bitcoin and Ethereum got hit with heavy ETF outflows amidst macro uncertainty and weakening investor sentiment, while Solana and XRP ETFs attracted fresh capital.
This suggests that institutions are getting more selective, rather than abandoning crypto exposure completely.
For now, Bitcoin remains the dominant institutional asset, but altcoin ETF products are proving capable of attracting demand during periods of market weakness.
Glossary
ETF: an Exchange-traded fund that tracks the value of an underlying asset
Net Outflow: more money leaving a fund than coming in.
Spot ETF: An ETF that is backed directly by the actual cryptocurrency itself
Institutional Investors: large financial entities like hedge funds, banks, and asset managers.
Frequently Asked Questions About Recent Crypto ETF Outflows
How much did Bitcoin ETFs lose on May 18?
Bitcoin spot ETFs took a hit of $648.64 million in net ETF outflows.
Did Ethereum ETFs also see outflows?
Yeah, Ethereum spot ETFs lost $86.31 million that day.
Which crypto ETFs were still attracting capital?
Solana and XRP ETFs both recorded some positive inflows.
What do ETF flows indicate?
ETF flows help track institutional and retail investor sentiment toward crypto assets.
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