Prometheum Capital, the SEC-registered crypto asset clearing broker-dealer, has executed what it calls the first purchase of Ethereum directly within a standard U.S. brokerage account. Unlike transactions through an ETF or ETP wrapper, this trade settles the underlying digital asset under federal securities law, a structural shift for broker-dealers and registered investment advisors.
Aaron Kaplan, founder and co-CEO of Prometheum, told InvestmentNews that the milestone changes the regulatory context for crypto in client portfolios. “For the first time, a client can hold a crypto asset inside a brokerage account governed by federal securities law, with the legal segregation of assets, customer protection rules, and compliance infrastructure that advisors and their clients already rely on,” Kaplan said. The trade was cleared and settled within Prometheum’s existing infrastructure, not through a state-licensed money transmitter.
Until now, brokerages offering spot crypto trading typically used state-level licenses, creating operational and compliance gaps. “The few brokerages that do offer spot crypto trading do so through state licensed or money transmitter licensed entities that sit outside that framework,” Kaplan noted. “ETFs and ETPs gave investors exposure to crypto through a wrapper, but not the underlying asset.” The new capability lets advisors offer direct ownership of ETH within the same account structures used for stocks and bonds.
This month’s milestone coincided with the launch of Prometheum Capital’s Digital Brokerage Solutions, a correspondent clearing, custody, and trading platform. Inaugural clients include Arete Wealth Management, Network 1 Financial Securities, and an unnamed clearing broker-dealer that entered an omnibus clearing agreement. The platform aims to let broker-dealers offer crypto assets without building new technology stacks or overhauling compliance frameworks.
For advisors weighing direct token ownership against crypto ETFs, Kaplan drew a clear distinction. “Owning a crypto ETF means owning shares of a fund, with no direct claim on the underlying asset, ongoing expense ratios, fund-imposed constraints, and exposure limited to traditional market hours,” he said. “Direct token ownership gives advisors and clients more precise control over exposure, cost, and the timing of taxable events.” Both instruments have a place under Regulation Best Interest, he added, but advisors now have a choice.
The regulatory difference is material. A crypto asset held in a brokerage account falls under SEC Rule 15c3-3, FINRA oversight, best execution obligations, and net capital requirements. “The money transmitter licenses and state charters under which most crypto platforms operate were not designed for securities custody and carry materially different investor protection standards,” Kaplan said. For SEC-regulated firms, that distinction matters.
Kaplan acknowledged that legislative clarity remains incomplete. “SEC guidance is not the same as legislative codification, and the CLARITY Act remains an important milestone for the entire industry,” he said. “Broker-dealers will not adopt at institutional scale until that clarity exists.” Prometheum’s infrastructure is designed to operate at the highest current regulatory standard, positioning it for whatever legal environment emerges.
Tokenized securities have attracted roughly $30 billion in issuance on blockchain rails, but distribution has lagged. “The tokenization story to date has been primarily an issuance story,” Kaplan said. “What has been largely absent is a compliant, scalable distribution pathway to reach the advisors and broker-dealers who actually manage client assets.” Opening the broker-dealer channel, he argued, changes the economics of tokenization entirely.
For advisors seeking to deepen client relationships amid market volatility, the ability to offer direct crypto ownership within existing account structures may provide a new tool. As noted in Advisors Deepen Client Relationships Amid Volatility to Boost Revenue Without New Accounts, retaining assets in-house is a growing priority. Similarly, the rise of alternative assets in brokerage accounts, such as private credit ETFs, signals a broader trend toward expanding product offerings within regulated frameworks.
