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SEC Nears New Crypto Custody Rule for Broker-Dealers, Investment Advisers

Reported by Bloomingbit
Sep 22, 2026· 3 min read
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Key Takeaways
  • • The SEC has withdrawn its 2019 joint statement with FINRA on broker-dealer custody of crypto asset securities and issued updated guidance establishing a "non-objection framework" for physical possession under Rule 15c3-3, clearing regulatory ambiguity that had constrained the sector.
  • • Broker-dealers can now demonstrate compliance with custody requirements by taking specified measures to maintain "physical possession or control" of crypto asset securities held for customer accounts, addressing a core operational barrier to institutional crypto adoption.
  • • The SEC has proposed new custody rules for investment advisers and registered funds, permitting them to maintain crypto assets with qualified custodians—including specialized digital asset custodians—without requiring traditional bank custodian arrangements.
  • • FINRA has identified supervision and compliance gaps (Rule 3110 violations) among member firms regarding crypto asset custody due diligence, signaling enforcement focus on operational controls and customer asset protection.
  • • This regulatory evolution represents a phased approach: interim staff guidance in 2025 followed by formal rule proposals, designed to reduce regulatory constraints while the SEC develops comprehensive custody frameworks for digital assets.
Summary
The SEC is substantially advancing its regulatory framework for cryptocurrency custody, marking a significant shift in how broker-dealers and investment advisers can handle digital assets for institutional clients. On May 15, 2025, the SEC and FINRA staffs withdrew a restrictive 2019 joint statement and issued new guidance that establishes clearer pathways for compliance. The core issue—how broker-dealers can lawfully maintain "physical possession" of crypto assets under Rule 15c3-3 of the Securities Exchange Act of 1934—has been a persistent obstacle to institutional market participation.

Under the new framework, the SEC's Division of Trading and Markets will not object to broker-dealers deeming themselves to have "physical possession" of crypto asset securities when they implement specified measures for customer accounts. This represents a deliberate pivot from prior regulatory ambiguity that effectively prevented many traditional financial intermediaries from offering crypto custody services. The guidance explicitly applies to paragraph (b)(1) of Rule 15c3-3, which requires broker-dealers to maintain physical possession or control of fully paid and excess margin securities. The Division has clarified that compliance with this requirement does not depend on traditional physical safekeeping methods, opening the door to custodial solutions using digital infrastructure.

The SEC has simultaneously advanced separate custody rule proposals for investment advisers and registered funds. These proposals permit advisers with custody obligations to maintain client crypto assets with "qualified custodians" beyond traditional banks—specifically allowing arrangements with specialized custodians that treat crypto assets as securities-equivalent holdings. This removes the historical barrier requiring RIAs and registered funds to default to bank custodians when no suitable alternative existed for digital assets.

However, FINRA's recent communications highlight compliance challenges ahead. The self-regulatory organization has identified potential violations of FINRA Rule 3110 (Supervision) among member firms, particularly failures in reasonable due diligence on crypto asset custodians. This signals that while the SEC is removing regulatory barriers, FINRA enforcement will intensify scrutiny of broker-dealer and adviser operational controls, risk management procedures, and customer asset protection protocols in the crypto custody space.

The regulatory evolution reflects a deliberate interim approach: the May 2025 staff statement provides immediate relief while formal custody rulemaking continues through the White House proposal process. This staged progression balances institutional demand for clarity with regulators' need to develop comprehensive safeguards as crypto custody volumes scale.

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Sources

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Bloomingbit SEC Nears New Crypto Custody Rule for Broker-Dealers, Investment Advisers