Key Takeaways
- • Morgan Stanley has designated Coinbase Custody Trust Company and The Bank of New York Mellon as custodians for its proposed Morgan Stanley Bitcoin Trust ETF, as detailed in an amended S-1 registration filing submitted in March 2026.
- • BNY Mellon will serve a dual role as both Bitcoin custodian and fund administrator/transfer agent, while Coinbase Custody Trust Company handles Bitcoin safeguarding—a structure mirroring existing institutional Bitcoin ETFs like BlackRock's iShares Bitcoin Trust (IBIT).
- • The custody arrangement reflects industry precedent: BlackRock's IBIT initially used Coinbase alone before adding Anchorage Digital as a second custodian in April 2025, and similarly employs BNY Mellon for cash custody and administration.
- • Morgan Stanley's Bitcoin ETF remains pending SEC approval for trading; the firm also filed concurrent registrations for Ethereum and Solana ETFs in January 2026, signaling a broader institutional push into crypto-native asset classes.
- • Amy Oldenburg, Morgan Stanley's newly appointed digital assets strategy head, stated the bank plans to develop in-house capabilities for Bitcoin custody, trading, yield generation, and lending services rather than outsourcing these functions entirely.
Summary
Morgan Stanley has finalized its custody structure for its proposed spot Bitcoin ETF by selecting Coinbase Custody Trust Company and The Bank of New York Mellon as custodians, according to an amended S-1 registration statement filed on Wednesday, March 4, 2026. The decision aligns Morgan Stanley's approach with established industry practice, following the custody model employed by BlackRock's iShares Bitcoin Trust, which similarly relies on BNY Mellon for administrative and cash custodian functions alongside digital asset custody providers.
Under the announced structure, BNY Mellon will assume multiple responsibilities including acting as fund administrator, transfer agent, and cash custodian, while Coinbase Custody Trust Company will manage the safeguarding of Bitcoin holdings. This dual-custodian arrangement provides institutional investors with the diversified custody approach increasingly expected in regulated cryptocurrency products. BlackRock's precedent is instructive: IBIT initially operated with Coinbase as sole Bitcoin custodian before expanding to include Anchorage Digital as a second custodian in April 2025, demonstrating institutional investor demand for custody redundancy and operational resilience.
Morgan Stanley first filed its S-1 registration for the spot Bitcoin ETF in January 2026, alongside concurrent filings for proposed Ethereum and Solana ETFs. At that initial filing stage, the bank did not disclose custodial arrangements. The March amendment provides the operational detail required for SEC review, though the Bitcoin Trust has not yet received trading approval from the Securities and Exchange Commission.
The custody announcement reflects a broader institutional commitment to cryptocurrency infrastructure. Amy Oldenburg, Morgan Stanley's recently appointed head of digital assets strategy, stated that the bank intends to build in-house capabilities for Bitcoin custody, trading, yield generation, and lending services. Oldenburg emphasized that Morgan Stanley's brand positioning and client expectations necessitate internal development rather than reliance on third-party technology providers, noting that "when you sit in that position, you have a significant responsibility to your clients to make sure that you're delivering that in any level of technology."
Under the announced structure, BNY Mellon will assume multiple responsibilities including acting as fund administrator, transfer agent, and cash custodian, while Coinbase Custody Trust Company will manage the safeguarding of Bitcoin holdings. This dual-custodian arrangement provides institutional investors with the diversified custody approach increasingly expected in regulated cryptocurrency products. BlackRock's precedent is instructive: IBIT initially operated with Coinbase as sole Bitcoin custodian before expanding to include Anchorage Digital as a second custodian in April 2025, demonstrating institutional investor demand for custody redundancy and operational resilience.
Morgan Stanley first filed its S-1 registration for the spot Bitcoin ETF in January 2026, alongside concurrent filings for proposed Ethereum and Solana ETFs. At that initial filing stage, the bank did not disclose custodial arrangements. The March amendment provides the operational detail required for SEC review, though the Bitcoin Trust has not yet received trading approval from the Securities and Exchange Commission.
The custody announcement reflects a broader institutional commitment to cryptocurrency infrastructure. Amy Oldenburg, Morgan Stanley's recently appointed head of digital assets strategy, stated that the bank intends to build in-house capabilities for Bitcoin custody, trading, yield generation, and lending services. Oldenburg emphasized that Morgan Stanley's brand positioning and client expectations necessitate internal development rather than reliance on third-party technology providers, noting that "when you sit in that position, you have a significant responsibility to your clients to make sure that you're delivering that in any level of technology."
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.