U.S. SEC Starts Planning for Continuous Trading, a Practice Common in Crypto Markets

The United States Securities and Exchange Commission (SEC) has taken a significant step toward modernizing the nation’s capital markets by beginning to explore the feasibility of continuous, 24‑hour trading. This move reflects a growing recognition that the traditional model of limited trading hours—typically from 9:30 a.m.

to 4:00 p.m. Eastern time on weekdays—may no longer be adequate for a financial ecosystem increasingly driven by digital assets and global participation. The SEC’s deliberations were announced during a high‑profile event that coincided with the agency’s approval of the first tokenized securities, a milestone that underscores the regulator’s willingness to engage with innovative financial products while still safeguarding investors.

### Why Continuous Trading Matters Historically, U.S. equity markets have operated within a fixed schedule, a legacy inherited from the era of floor trading when physical presence on the exchange floor dictated when transactions could occur.

Over time, electronic trading platforms have extended pre‑market and after‑hours sessions, but these windows remain limited and often suffer from reduced liquidity, wider bid‑ask spreads, and heightened volatility. In contrast, cryptocurrency exchanges have operated on a truly round‑the‑clock basis since their inception, offering participants the ability to buy, sell, and transfer assets at any time of day or night, regardless of geographic location.

For investors, the benefits of continuous trading are clear: it reduces the latency between market‑moving news and the ability to act on that information, potentially limiting price gaps that can arise when markets are closed. It also aligns the U.S.

market more closely with international peers, many of which already run extended or near‑continuous trading sessions. Moreover, a 24‑hour marketplace could attract a broader base of retail and institutional participants who trade outside conventional business hours, thereby deepening market liquidity and improving price discovery. ### The SEC’s Approach and Considerations The SEC’s initial foray into the concept of around‑the‑clock trading is being conducted through a series of internal workshops, stakeholder consultations, and technical assessments.

Key areas of focus include: 1. **Market Integrity and Surveillance**: Continuous trading will require robust monitoring tools capable of detecting manipulation, insider trading, and other illicit activities in real time. The SEC is evaluating whether existing surveillance systems can scale to a 24‑hour environment or if new technologies—such as AI‑driven anomaly detection—must be deployed. 2.

**Liquidity Management**: While crypto markets demonstrate that liquidity can be sustained around the clock, the SEC is cautious about whether traditional equities can achieve similar depth without compromising price stability. The agency is examining mechanisms such as designated market makers and liquidity‑providing incentives that could function effectively in an always‑open market. 3. **Clearing and Settlement**: The current T+2 settlement cycle (trade date plus two business days) is already under review for potential shortening.

Extending trading hours adds complexity to the clearing process, especially when trades occur across multiple time zones. The SEC is coordinating with the Depository Trust & Clearing Corporation (DTCC) and other clearinghouses to explore real‑time settlement models that could support continuous trading. 4.

**Investor Protection**: One of the SEC’s core mandates is to protect investors, particularly retail participants who may be less experienced. Continuous trading could expose these investors to heightened risk if they trade during periods of thin liquidity or heightened volatility. The agency is considering educational initiatives, risk warnings, and possibly time‑based trading caps to mitigate such concerns.

5. **Regulatory Harmonization**: Because securities are often traded on multiple venues—including domestic exchanges, alternative trading systems, and foreign platforms—the SEC must ensure that any shift to 24‑hour trading aligns with international regulatory frameworks. Ongoing dialogue with the European Securities and Markets Authority (ESMA), the Financial Conduct Authority (FCA) in the United Kingdom, and other global regulators is part of this effort. ### Tokenized Securities as a Catalyst The same morning the SEC announced its continuous‑trading exploration, it also gave formal approval to a pilot program for tokenized securities.

Tokenization involves converting traditional financial assets—such as shares, bonds, or real‑estate interests—into digital tokens that can be transferred on a blockchain. These tokens retain the legal rights and obligations of the underlying assets while benefiting from the efficiency, transparency, and programmability of distributed ledger technology. By green‑lighting tokenized securities, the SEC signaled its openness to integrating blockchain‑based innovations within the existing regulatory framework.

This approval serves as a practical test case for how the agency might handle securities that are inherently more suited to continuous trading. Unlike conventional stocks that settle on a fixed schedule, tokenized securities can, in principle, be transferred instantly, settled in near real‑time, and traded on platforms that operate 24/7.

The convergence of continuous‑trading ambitions and tokenization creates a synergistic environment: tokenized assets could be among the first securities to benefit from an always‑open market, while the experience gained from managing such assets could inform broader policy decisions about extending trading hours for all securities. ### Potential Challenges and Industry Reaction Despite the enthusiasm, several challenges remain.

Market participants worry about operational readiness—exchanges must upgrade their infrastructure to handle a constant flow of orders, and clearing firms need to adapt risk models for a non‑stop environment. There are also concerns about the impact on market makers, who traditionally rely on predictable trading windows to manage inventory and risk. Industry groups, including the Securities Industry and Financial Markets Association (SIFMA) and the Financial Industry Regulatory Authority (FINRA), have expressed cautious optimism. They recognize the competitive advantage a 24‑hour U.S.

market could confer but stress the need for a phased rollout, extensive testing, and clear guidance to avoid unintended consequences. ### Looking Ahead The SEC’s initiative marks a pivotal moment in the evolution of U.S. capital markets. By actively investigating the logistics of around‑the‑clock trading while simultaneously embracing tokenized securities, the agency is positioning itself at the intersection of traditional finance and emerging digital ecosystems.

The next steps will likely involve pilot programs on select exchanges, detailed rule‑making proposals, and continued collaboration with technology providers, market participants, and international regulators. If successful, continuous trading could reshape how investors interact with the market, reduce price inefficiencies, and bring the United States in line with the always‑on nature of modern digital finance. At the same time, the SEC’s careful, measured approach aims to preserve the core principles of market integrity, investor protection, and systemic stability that have underpinned the U.S.

securities system for decades. In summary, the SEC’s dual focus on 24‑hour trading and tokenized securities reflects a broader regulatory trend: embracing innovation while maintaining a vigilant stance on risk.

The outcomes of these efforts will likely influence not only the future of U.S. equities but also the global conversation about how best to integrate blockchain‑based assets into mainstream financial markets.