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BlackRock, then Bitwise — How the spot bitcoin ETF filings differ

Reported by Blockworks
Mar 15, 2026· 3 min read
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Key Takeaways
  • • BlackRock filed for a spot bitcoin ETF, prompting Bitwise to resubmit its own competing application one day later, marking a pivotal moment in the decade-long regulatory effort to bring direct bitcoin exposure to U.S. markets.
  • • Bitwise's Friday filing with NYSE Arca includes enhanced legal analysis regarding bitcoin price surveillance through Chicago Mercantile Exchange (CME) futures markets, strengthening its previous argument that CME futures adequately lead spot bitcoin prices to satisfy SEC requirements.
  • • The two filings differ structurally: Bitwise emphasizes CME surveillance-sharing agreements and futures-price leadership with additional supporting data, while BlackRock's updated filing incorporates new language on trust administrator protocols for monitoring unusual price movements.
  • • Bitwise's resubmission directly follows BlackRock's filing, positioning the firm to "jump in the queue behind BlackRock should the SEC approve the first spot Bitcoin ETF," according to Morningstar's Bryan Armour, signaling strategic sequencing in regulatory approvals.
  • • The SEC has rejected spot bitcoin ETF proposals for over a decade despite multiple attempts from major institutions including the Winklevoss twins and Fidelity, making these current filings part of a prolonged regulatory battle with heightened stakes given BlackRock's institutional scale and influence.
Summary
BlackRock and Bitwise have submitted competing applications for spot bitcoin ETFs, each with distinct structural approaches to satisfying SEC regulatory requirements. BlackRock filed its application first, prompting Bitwise to resubmit its own bid one day later on Friday. This sequence reflects strategic positioning in what has become the most significant moment in a decade-long effort to launch a direct bitcoin investment product in the United States.

Bitwise's current filing represents a resubmission of an earlier proposal originally filed in October 2021, which the SEC rejected in June 2022. The company's updated application, submitted through NYSE Arca as the proposed listing exchange, centers on strengthened regulatory arguments around bitcoin price surveillance. Specifically, Bitwise emphasizes that CME bitcoin futures markets lead spot bitcoin prices, and therefore a surveillance-sharing agreement with the CME satisfies the SEC's primary concern regarding market manipulation. The latest filing reinforces this position with additional data and legal analysis supporting the CME surveillance framework.

BlackRock's filing takes a different structural approach. According to Blockworks publisher context, the company's updated submission includes new language detailing the measures a trust administrator would implement to monitor for unusual price movements and market anomalies. This protocol-based compliance strategy complements the broader SEC approval process.

Industry observers view Bitwise's timing as a direct competitive response to BlackRock's application. Sumit Roy, senior analyst at ETF.com, characterized the move as "pretty clearly a direct response to the BlackRock filing." Morningstar's Bryan Armour noted that Bitwise's positioning suggests the firm anticipates queuing behind BlackRock in SEC review priority, contingent on BlackRock's approval. Bitwise Chief Investment Officer Matt Hougan previously indicated in April that the firm would await additional regulatory clarity before pursuing another spot bitcoin ETF application, a stance the Friday filing effectively reverses given BlackRock's move.

The historical context underscores the regulatory challenge both firms face. The SEC has consistently rejected spot bitcoin ETF proposals over the past decade from numerous applicants, including the Winklevoss twins and Fidelity. BlackRock's institutional prominence and resources represent a potentially decisive shift in this prolonged regulatory saga, compelling competitors to act swiftly to position themselves for approval.

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Blockworks BlackRock, then Bitwise — How the spot bitcoin ETF filings differ