Institutional demand for crypto exchange-traded funds is broadening beyond Bitcoin, with fresh capital returning to BTC products while Ethereum extends a lengthy buying streak and Solana funds reach new milestones.
U.S. spot Bitcoin ETFs attracted about $217 million on Aug. 31, reversing the roughly $202 million outflow recorded in the previous session, according to Farside Investors and SoSoValue data. BlackRock’s IBIT accounted for approximately $205.9 million of Monday’s total.
The rebound came after Friday’s withdrawals ended a nine-session inflow streak that had brought roughly $3 billion into Bitcoin funds. Coinpaper examined that nine-day buying run as one of Bitcoin’s strongest institutional-demand periods of 2026.
But Bitcoin is no longer the only ETF story attracting capital.
Solana ETF Growth Adds a New Institutional Milestone
Solana is emerging as one of the clearest signs that crypto ETF demand is expanding into alternative assets.
The Bitwise Solana Staking ETF, or BSOL, crossed $1 billion in assets under management on Aug. 28, just 10 months after launch. That made it the first U.S. Solana ETF to reach the billion-dollar threshold.
The milestone is particularly notable because it arrived while SOL remained far below its January 2025 all-time high.
Farside data show U.S. Solana ETFs had generated roughly $1.30 billion in cumulative net flows through Aug. 28. BSOL alone accounted for more than $1 billion of that figure, while Fidelity, Grayscale and other issuers continued attracting smaller allocations.
SOL was trading near $102 Tuesday, down slightly over 24 hours and still about 65% below its record high. That divergence makes the ETF demand notable: institutional allocations are growing even without a major Solana price breakout.
Ethereum Extends Its Own ETF Buying Streak
Ethereum provides another sign that institutional demand is widening.
U.S. spot Ether ETFs brought in about $88 million Monday, according to SoSoValue data cited by CoinDesk, marking an 11th consecutive trading day of net inflows. The streak has attracted approximately $1.6 billion and is the longest positive run for Ethereum ETFs since a 20-day streak ended in July 2025.
Coinpaper recently tracked how Bitcoin and Ethereum ETF demand accelerated together during Bitcoin’s August rally.
The newer development is that Solana is increasingly joining that institutional flow story rather than remaining a small alternative ETF category.
| Crypto ETF trend | Latest milestone |
|---|---|
| Bitcoin | $217M Aug. 31 inflow |
| Ethereum | 11 straight inflow sessions |
| Solana | BSOL crosses $1B AUM |
Bitcoin Holds Below $80,000 Despite ETF Buying
The ETF strength is occurring against a less straightforward price backdrop.
Bitcoin traded around $78,000-$79,000 Tuesday, remaining below the $80,000 threshold after briefly breaking above it during August. Rising Treasury yields and expectations for another Federal Reserve rate increase are creating pressure on risk assets despite renewed ETF buying.
That makes the expanding ETF demand more significant.
Bitcoin remains the dominant institutional crypto product, but Ethereum’s 11-day buying streak and Solana’s billion-dollar BSOL milestone show that regulated investment demand is no longer concentrated exclusively in BTC.
If those flows persist while crypto prices remain relatively subdued, September could provide a clearer test of whether ETF capital is becoming a broader structural source of demand across the digital-asset market rather than simply following Bitcoin rallies.
