The U.S. Securities and Exchange Commission is preparing Wall Street for two structural changes that could reshape how securities trade and settle: much longer trading hours and greater use of blockchain technology in the official recordkeeping of shares. The SEC announced a Sept. 17 roundtable focused on preparations for 24-hour trading, while a separate proposal would modernize federal transfer-agent rules that have not been substantively updated since the late 1970s and early 1980s.
The two initiatives are separate and neither means the U.S. stock market is immediately moving to universal 24/7 trading or blockchain-native equities. Together, however, they show the regulator addressing market structure at both ends of the transaction: when investors can trade and how ownership records can be maintained and transferred once a trade occurs.
The Sept. 17 roundtable will bring together representatives from Robinhood, NYSE, BlackRock, Virtu Financial, Cboe, UBS, FINRA, Jane Street, State Street, Nasdaq, Charles Schwab, DTCC, Citadel Securities, Citi and other firms. The agenda covers exchange and broker readiness, overnight surveillance, closing-price processes, clearing and settlement, investor protection, cybersecurity, staffing, market-data continuity and shortened maintenance windows.
SEC Is Testing the Limits of Near-Continuous Trading
U.S. equities already trade outside the traditional 9:30 a.m. to 4 p.m. Eastern session through premarket and after-hours venues, but the market’s core infrastructure was not originally designed for continuous operation. Moving closer to 24-hour trading would require exchanges, brokers, clearing firms, market makers and data providers to remain resilient during periods that historically served as maintenance windows.
Liquidity is another major concern. A market can technically remain open overnight without delivering the depth or pricing quality investors expect during regular hours. Thin order books can produce wider spreads and more volatile prices, while fragmented participation may make closing prices and benchmarks more difficult to interpret. The SEC says one panel will specifically examine expected liquidity conditions and investor protections as markets move toward near-continuous trading.
The discussion also extends beyond 24×5 models. The SEC agenda explicitly looks ahead to potential 24×7 trading and the infrastructure changes that would be required. That direction increasingly overlaps with digital asset markets, where cryptocurrencies and many tokenized products already trade around the clock.
Traditional exchanges are beginning to move in the same direction. CoinScreamer recently covered London Stock Exchange Group’s partnership with Payward to bring major UK stocks into the xStocks framework, with LSE 24 intended to support extended-hours trading if regulators approve the structure.
Blockchain Appears in a Decades-Old Rulebook Rewrite
At the same time, the SEC has proposed a major rewrite of the rules governing registered transfer agents. These firms maintain official records of security ownership, process transfers and help connect issuers with the national clearance and settlement system.
SEC Chairman Paul Atkins said the proposal is intended to reflect modern processes, specifically including electronic communications and blockchain technology used in securities offerings and share transfers. That language is significant because it places distributed ledger technology directly inside a regulatory framework governing the official ownership records of U.S. securities rather than treating blockchain solely as an experimental crypto technology.
The proposal does not automatically approve tokenized stocks or replace existing clearing infrastructure. It instead updates the regulatory framework so transfer agents can operate in an environment where electronic and distributed records may play a larger role. The public comment period will remain open for 60 days after publication in the Federal Register.
The shift fits a broader institutional adoption trend in which banks, exchanges, asset managers and market infrastructure providers are testing tokenized funds, securities, deposits and collateral. CoinScreamer’s tokenization coverage has increasingly tracked projects moving beyond pilots toward regulated production systems.
Trading Hours and Tokenization Are Beginning to Converge
Longer trading hours and tokenization address different problems, but their economics increasingly intersect. A blockchain-based security can potentially move between approved participants outside conventional exchange hours, yet investors still need regulated price discovery, reliable liquidity, custody, corporate actions and final settlement. Extending traditional market hours reduces the gap between the always-on nature of blockchain infrastructure and the operating schedule of conventional securities markets.
That convergence could also change collateral management. Securities that can be transferred more frequently and settled through modernized infrastructure may become easier to mobilize across trading, repo and treasury operations. For large institutions, the benefit is less about putting stocks “on crypto” and more about reducing reconciliation, settlement delays and idle collateral across fragmented systems.
There are substantial operational risks. Continuous markets leave less time for software upgrades and maintenance, require overnight surveillance and staffing, and increase dependence on resilient clearing and market-data systems. Blockchain-based ownership records introduce additional questions around control, cybersecurity, interoperability, privacy and how regulated intermediaries interact with distributed networks.
The SEC’s September initiatives therefore represent preparation rather than a completed transformation. Regulators are not announcing that all U.S. stocks will trade 24/7 or that corporate share registers are moving immediately to public blockchains. What has changed is that both concepts are now being addressed as practical market-structure questions involving the largest institutions on Wall Street.
If the roundtable leads to workable standards for longer trading hours and the transfer-agent proposal survives the rulemaking process, the U.S. could move closer to a securities market where trading, ownership records and settlement operate on a more continuous digital foundation. For the tokenization sector, that would be a more consequential milestone than another isolated blockchain pilot because it would involve the regulatory architecture underlying mainstream U.S. capital markets.
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