SEC Approves Five-Year Exemption for Tokenized Stock Trading Venues

The SEC approved an Innovation Exemption on September 17, 2026, allowing trading venues to issue and trade tokenized versions of publicly listed U.S. stocks through automated market makers. The five-year exemption permits Tokenized Securities Venues (TSVs) to operate outside traditional exchange regulation, moving markets closer to round-the-clock trading but introducing new risks to price discovery and settlement efficiency.

The exemption arrives as the Securities Information Processors expand from standard trading hours to a 23x5 schedule beginning December 6, 2026. Rather than integrate, tokenized and overnight traditional trading operate in parallel—two different approaches to after-hours equity trading that regulators will monitor for systemic effects and market fragmentation.

What the exemption permits and requires

TSVs are permitted to trade tokenized NMS stocks through permissioned automated market makers and liquidity pools without registering as national securities exchanges or alternative trading systems. Tokenized stocks must grant holders identical rights to traditional shares, and TSVs must notify issuers before trading versions of their securities tokenized by an unaffiliated third party.

Trading is constrained by volume caps: Tier 1 stocks in the S&P 500 and Russell 1000 are limited to 75 symbols with daily volume capped at 0.25%, while Tier 2 stocks allow 250 symbols with 2.5% caps. Smart contracts powering trades must be auditable, public and deployed on permissionless ledgers. TSVs must halt trading whenever the primary exchange halts the underlying security and must provide 30 days' notice before launching operations.

Liquidity providers supplying capital to automated market makers receive exemptive relief from broker-dealer registration, provided they limit activities exclusively to tokenized NMS stocks on qualifying venues, do not hold customer assets, disclose their unregistered status, and maintain SEC records. TSVs must publicly report on their operations and trading activities, including those of their affiliates.

How it fits with extended hours trading

The SIPs are set to expand to a 23x5 schedule beginning December 6, 2026. This expansion provides institutional-grade trading data and infrastructure for overnight equity trading under traditional regulatory rules.

Tokenized venues and extended-hours traditional trading operate in parallel rather than integrated systems. As a result, TSVs are not considered "trading centers" or "market centers" under Regulation NMS, meaning they are not subject to the Regulation NMS rules that apply to exchanges and ATSs. This separation allows both overnight mechanisms to develop independently while the SEC observes whether either creates systemic risks or market fragmentation.

Current extended-hours trading in regular equities remains marginal—less than 1% of daily volume. Tokenized trading may follow the same path or may grow into a distinct product for specific investors. The two-track approach lets regulators see how markets behave when multiple routes exist for after-hours trading without requiring any single venue to dominate.

Price discovery risks from fragmented liquidity

A primary concern is that splitting trading across venues fractures price discovery. If a stock trades on a primary exchange during the day and on a tokenized venue overnight, the price emerging from one venue does not automatically reflect or inform the other. Overnight liquidity in tokenized pools remains thin, which can produce wider spreads and sharper price swings that do not reflect broad market demand.

Overnight pools operate with minimal depth. The volume caps in the exemption—0.25% for major stocks—mitigate but do not eliminate fragmentation risk. If tokenized trading grows or caps are later raised, liquidity could split substantially across venues, widening spreads and raising trading costs.

TSVs must publicly report on their trading activities, but this information arrives after trading occurs. Real-time price divergence between venues can persist while data is still pending. The fragmentation risk is manageable at current scale but becomes material if overnight tokenized trading expands significantly.

Settlement infrastructure and the netting trade-off

Tokenized equities promise near-instantaneous settlement: a blockchain records the trade in seconds, eliminating the one-day delay of traditional stock settlement. However, instant settlement creates a structural cost that must be absorbed by the market.

Traditional stock markets use centralized clearinghouses to net offsetting trades throughout the day. A firm that buys and then sells 100 shares of the same stock settles a net position of zero, with no capital movement. This netting dramatically reduces the liquidity required to operate the system. Tokenized venues using atomic settlement eliminate netting: each trade settles individually, gross, in real time. Liquidity providers must prefund every transaction independently rather than settling only net positions.

The result is higher intraday capital requirements for market makers, which raises the cost of supplying liquidity on tokenized venues. Hybrid settlement models—tokenized trading with centralized netting attached—may emerge, but the current exemption does not require them. The SEC is testing whether participants will accept higher costs to gain instant settlement, or whether markets gravitate toward settlement models that preserve netting efficiency.

A five-year test before permanent regulation

The Innovation Exemption is set to expire five years after it is published in the Federal Register. During this period, the SEC is explicitly requesting public comment on the conditions, scope and effects of the exemption. The agency has signaled it may pursue permanent rulemaking after observing how tokenized markets develop.

Temporary exemptions allow markets to innovate in a controlled environment. If tokenized trading remains niche and raises no systemic concerns, the SEC may formalize it through rulemaking. If fragmentation damages price discovery or settlement efficiency, the agency can tighten restrictions or let the exemption lapse. The SIP expansion to extended hours offers an alternative pathway for overnight equity trading without blockchain infrastructure, making tokenized trading one option among several rather than an inevitable evolution.