SEC casts doubt on REX‑Osprey bid to launch staking Ethereum, Solana ETFs

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Quick Take

  • The SEC said a recent proposal for Solana and Ethereum ETFs that would generate yield from staking may not meet the legal qualifications for an exchange-traded fund. 
  • In a letter late Friday, the SEC flagged the proposal from REX Shares and Osprey Funds, saying it went effective before certain “unresolved questions” regarding the proposed funds were answered to the agency’s satisfaction. 

The U.S. Securities and Exchange Commission has warned ETF issuers REX Shares and Osprey Funds that their landmark “staking ETF” proposal may not meet the basic legal definition of an exchange‑traded fund, raising the prospect of enforcement or a forced refiling just hours after the products’ registration statement technically went live.

REX Shares and Osprey Funds recently filed to create C-corporation ETFs that would invest in Ethereum and Solana and stake at least half the assets for additional yield generation. 

However, their strategy, which consists of "a bunch of clever legal and regulatory work-arounds," according to Bloomberg Intelligence analyst James Seyffart, has been flagged by the SEC in a recent letter. 

"[Securities and Exchange] Commission staff continues to have unresolved questions whether the Funds, if structured and operated as proposed, would be able to meet the definition of 'investment company' under the Investment Company Act," SEC Associate Director Brent J. Fields wrote in a letter late Friday. 

Fields also revealed that the SEC asked the issuers to delay the effectiveness of the registration statement, which went into effect on Friday. "To the extent that these concerns remain unresolved, the Commission staff will consider the appropriate next steps to ensure compliance with the federal securities laws," Fields wrote. 

The SEC also asked the issuers to make a prior email correspondence from Thursday, May 29, public so that potential investors can review the exchange.  The agency had several rounds of communication with the issuers, the letter reveals. 

“We think we can satisfy the SEC on the investment company question, and we don’t intend to launch the funds until we do that,” Greg Collett, general counsel at REX Financial, told Bloomberg

While spot Ethereum ETFs have traded since July of last year, a spot Solana ETF has yet to be approved, meaning the staking Solana ETF has two regulatory hurdles to overcome. 


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© 2025 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

AUTHOR

Zack Abrams is a writer and editor based in Brooklyn, New York. Before coming to The Block, he was the Head Writer at Coinage, a Web3 media outlet covering the biggest stories in Web3. The story he co-reported on Do Kwon won a 2022 Best in Business Journalism award from SABEW. Other projects included a deep dive into SBF's defense based on exclusive documents and unveiling the identity of the hacker behind one of 2023's biggest crypto hacks — so far. He can be reached via X @zackdabrams or email, [email protected].

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