The Daily: SEC rejects filings for Solana ETFs, Mango Markets DAO votes on settlement proposal, spot bitcoin ETF flows and more

Quick Take

  • The SEC rejected Cboe’s 19b-4 filings for Solana ETFs: Source
  • Mango Markets DAO votes on settlement proposal with SEC
  • U.S. spot bitcoin ETFs see lowest daily trading volume since early February
  • The following is adapted from The Block’s newsletter, The Daily, which comes out on weekday afternoons.
Happy Tuesday! In today's Daily, we look at the SEC rejecting 19b-4 filings for Solana ETFs, the Mango Markets DAO voting on a settlement proposal, U.S. spot bitcoin ETFs seeing the lowest daily trading volume in months and more.
 
Let's get started.

SEC rejects filings for Solana ETFs

According to a well-placed source, the SEC rejected Cboe BZX’s 19b-4 filings for two prospective spot Solana ETFs, leading to their withdrawal from the Cboe website.
  • The rejection followed concerns that Solana should be classified as a security, aligning with the SEC’s stance in various court cases.
  • The 19b-4 filings, necessary for initiating the SEC’s approval process, were not placed in the Federal Register due to the SEC's rejection.
  • The two issuers 21Shares and VanEck are still pursuing Solana ETFs, with their filings remaining active on the SEC's EDGAR system.
  • The rejected 19b-4 filings could be refiled or amended to address the SEC's concerns regarding Solana’s classification.

Mango Markets DAO votes on SEC settlement proposal

Mango Markets is considering a proposed settlement with the SEC over allegations that the platform violated U.S. securities laws following a $110 million exploit in 2022.
  • Mango DAO has proposed a settlement that includes paying $223,228 in fines, destroying MNGO tokens and seeking delisting from trading platforms to resolve the SEC's allegations.
  • The proposal aims to avoid litigation without admitting or denying wrongdoing and has already reached a quorum with unanimous approval from voters.
  • Despite the SEC settlement proposal, Mango Markets is also reportedly facing investigations from the Department of Justice and the Commodity Futures Trading Commission, which are not covered by this settlement.

US spot bitcoin ETFs see lowest daily trading volume since early February

U.S. spot bitcoin ETFs saw $61.98 million in daily net inflows on Monday, with a total daily trade volume of $779.87 million, the lowest since Feb. 6.
  • Monday's trade volume marked a significant drop from the $5.24 billion recorded on Aug. 6 to reflect ongoing low market sentiment and investor caution.
  • BlackRock’s IBIT and Fidelity’s FBTC saw net inflows of $92.68 million and $3.87 million respectively, while Bitwise’s bitcoin fund and Invesco’s BTCO experienced net outflows.
  • Spot ether ETFs reported their lowest daily trade volume since launch as concerns over staking legalities and recent Solana ETF issues continue to weigh on investor sentiment.

Institutional investors holding steady on bitcoin despite market volatility

Despite bitcoin's recent volatility, institutional investors have shown strong commitment to their spot bitcoin ETF holdings, with many maintaining or increasing their positions.
  • Bitwise's André Dragosch highlighted that in the second quarter of 2024, 44% of institutional investors increased their bitcoin ETF holdings, demonstrating greater confidence compared to other asset-class ETFs like gold.
  • Wintermute analysts noted that even with bitcoin's 20% price drop in the second quarter, institutional traders continued accumulating bitcoin to signal growing mainstream acceptance.
  • Over 60% of top global hedge funds, including Millennium and Schonfeld, are now holding bitcoin via ETFs, with a broad range of investors engaging in spot bitcoin ETFs.

Paradigm leads $7.5 million raise for Sorella Labs

Sorella Labs has raised $7.5 million in a seed funding round led by Paradigm.
  • The startup focuses on addressing Ethereum's maximal extractable value (MEV) issue.
  • Sorella Labs has launched Brontes, an open-source blockchain analytics tool, and plans to release Angstrom, a Uniswap V4 hook designed to prevent common forms of arbitrage in decentralized exchanges.

In the next 24 hours

United States releases Crude Oil Inventories and Federal Open Market Committee (FOMC) meeting minutes
 
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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

MK Manoylov has been a reporter for The Block since 2020 — joining just before bitcoin surpassed $20,000 for the first time. Since then, MK has written nearly 1,000 articles for the publication, covering any and all crypto news but with a penchant toward NFT, metaverse, web3 gaming, funding, crime, hack and crypto ecosystem stories. MK holds a graduate degree from New York University's Science, Health and Environmental Reporting Program (SHERP) and has also covered health topics for WebMD and Insider. You can follow MK on X @MManoylov and on LinkedIn.

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To contact the editor of this story: Jason Shubnell at [email protected]

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