The U.S. Securities and Exchange Commission proposed a sweeping crypto custody framework on Thursday, October 1, laying out how registered investment advisers and regulated funds must hold digital assets on behalf of clients — a question that has left much of the professional money-management industry on the sidelines for years [1].
The 760-page proposal is the latest in a rapid sequence of SEC rulemaking that has reshaped the agency's relationship with the crypto industry in 2026 [1].
Why the Old Rules No Longer Work
Investment advisers are legally required to keep client assets with "qualified custodians" that meet strict safekeeping standards, but it has long been unclear which crypto arrangements satisfy that bar [3]. The existing rules were written for traditional assets — stock certificates, bonds — and never contemplated private keys or blockchain-native instruments [4].
"Our rules and regulations have not kept pace," SEC Chairman Paul Atkins said in a statement, describing the existing framework as "the grey of uncertainty created by custody rules crafted for a bygone era" [1][3]. The SEC had withdrawn an earlier 2023 custodial-safeguards proposal in June 2025, leaving a regulatory gap that Thursday's release is designed to fill [4].
What the Proposal Actually Does
The framework operates on several levels simultaneously.
Qualified custodians expanded. State-chartered trust companies would be permitted to serve as custodians for client and fund crypto assets, provided they implement written safeguarding policies and submit annual audited financial statements [1][4]. Registered broker-dealers could also qualify based on existing customer-protection standards [4].
Audit and disclosure updates. The proposal would clarify recordkeeping, federal disclosure requirements, and auditing standards for both investment advisers and funds that hold crypto — areas where current rules offer little guidance [1][3].
Self-custody as a last resort. Perhaps the most novel element is a limited self-custody provision, allowing an adviser to hold clients' private keys directly — but only after demonstrating that no qualified custodian is willing or able to take the asset [1]. At least two individuals must authorize any use of those keys, each client's coins must be stored in separate on-chain addresses, an independent auditor must evaluate the adviser's custody controls within six months, and fund boards must review the adviser's self-custody determination every quarter [4]. An SEC official acknowledged that the circumstance would likely be unusual in practice — potentially applying to a newly launched token that custodians don't yet support — and that it originated from an industry request to the agency's Crypto Task Force [1].
The strict conditions attached to self-custody could make the option prohibitively expensive for most firms, effectively pushing advisers toward assets that established custodians already support [4].
Part of a Broader Regulatory Push
Thursday's release is the third major crypto rulemaking the SEC has published in recent months. The agency previously rolled out an "Innovation Exemption" allowing tokenized securities to trade on-chain, and proposed Regulation Crypto Assets, a framework governing how companies can raise funds using digital assets without violating federal securities law [1][3]. Staff also clarified that token buybacks do not, by themselves, make a crypto asset a security [3].
Atkins has said the custody proposal places a checkmark on every major item of the crypto agenda he set out when he became chairman [1]. The moves collectively reflect a broader regulatory shift in which the crypto industry has leaned into agency rulemaking rather than waiting for comprehensive congressional action — the Clarity Act having stalled in the Senate [3][4].
What It Means for the Market
Investment advisers collectively manage more than $100 trillion in assets [4]. Even a marginal reallocation toward digital assets, once a clear compliance pathway exists, could represent a substantial capital inflow into the crypto market.
Spot ETF data offers a rough proxy for where regulated money has already been flowing. As of late September 2026, U.S. spot Bitcoin ETFs held approximately $108 billion in assets, Ethereum funds held $17.8 billion, Solana funds $2 billion, and XRP funds $1.8 billion [4]. Bitcoin funds alone already own roughly 6.29% of all Bitcoin in circulation [4].
Because custodians will ultimately determine which assets they are willing to support — and because the costs of full self-custody are high — the proposal's near-term beneficiaries are likely to be assets that major custodians already handle, primarily Bitcoin and Ethereum [4]. Whether smaller assets like Solana or XRP see faster adviser adoption will depend on how broadly the final rule defines eligible custodians and how the self-custody conditions are refined after the comment period [4].
Institutional Context and What Comes Next
The proposal arrives at an unusual moment for the SEC itself. Commissioner Hester Peirce, who has led the agency's Crypto Task Force since its inception, departed the commission on Friday to join a Virginia university as a professor, leaving the agency with just two commissioners [1]. The SEC moved earlier this week to lower its quorum requirement from three commissioners to two, and specified that a single remaining commissioner can form a quorum if the other is conflicted out of a particular action [1].
The proposal now enters a 60-day public comment period, which begins once it is published in the Federal Register [1][3]. After reviewing comments, the agency can revise the rules before any vote to formally adopt them — meaning the final framework could look meaningfully different from what was released Thursday [3].
The key variables to watch: how broadly the final rule defines "qualified custodian," whether the self-custody conditions are loosened or tightened, and which specific assets major custodians choose to support once the rule is in force. Those decisions will determine whether Thursday's proposal ultimately widens crypto access across the full spectrum of digital assets or primarily entrenches the advantages Bitcoin and Ethereum already hold.
