US spot Ethereum ETFs opened with $10.36 billion inside them, but filing data shows 98.7% of that seed base came from Grayscale trusts converting into the new funds, not fresh buying. Solana ETFs show a smaller version of the same pattern.
US spot Ethereum ETFs appeared to launch with $10.36 billion already inside them, a balance large enough to look like an institutional buying wave before the first full session ended. However, almost all of that amount came from ETH that Grayscale's older trusts already held, so the launch moved an existing pool into exchange-traded products rather than absorbing new demand.
Grayscale conversions account for nearly all the seed base
Farside Investors data assigns $9.199 billion of the $10.36 billion seed base to conversions of the Grayscale Ethereum Trust, plus another $1.023 billion to the Grayscale Ethereum Mini Trust. The remaining eight issuers supplied $138.5 million in total, leaving 98.7% of the displayed seed row tied to Grayscale conversions.
Separately, Farside records a nearly $12.9 billion cumulative post-launch net flow through Aug. 27 on its own accounting line, distinct from the seed row. Grayscale's ETHE annual filing records the contribution of 292,262.98913350 ETH, about 10% of ETHE's holdings, to the Mini Trust on July 23, 2024, valued at $1,010,934,757, with ETHE receiving 310,158,500 Mini shares at $3.26 each before distributing them to ETHE holders.
Solana funds carry a smaller version of the same trap
Farside's Solana table shows $449.3 million on the seed row across six funds, with the Grayscale Solana Trust conversion accounting for $102.7 million, or 22.9% of that total. The other products supplied $346.6 million, with BSOL alone contributing $222.9 million. Solana's separate cumulative net flow reached $1.284 billion through Aug. 27.
Bitcoin products carry the same distinctions, since a converted trust can bring a large installed asset base while later creations represent new shares whose underlying coins were sourced elsewhere in the trading chain. Comparing launch sizes across Bitcoin, Ethereum, and Solana therefore requires the same accounting boundary for each group: separating seed capital, legacy conversions, primary-market flow, and total assets under management. Keeping those buckets apart turns a headline "ETF demand" figure into an account of when assets actually entered the funds and where they came from.
Source: CryptoSlate
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