# SEC Sets September Test for 24-Hour Stock Trading > The SEC set a September 17 roundtable on overnight U.S. equity trading, moving the debate from access demand to liquidity, surveillance and settlement readiness. - Content type: NewsArticle - Section: News - Published: 2026-07-24T06:40:00.000Z - Publisher: Arkolith Newsroom - Canonical HTML: https://arkolith.com/news/news-sec-24-hour-trading-roundtable - Plain Markdown: https://arkolith.com/news/news-sec-24-hour-trading-roundtable.md - Topics: SEC, 24-hour trading, Market structure, Nasdaq, NYSE ## Article The Securities and Exchange Commission has set a September 17 roundtable on moving U.S. equity markets toward 24-hour trading, turning a broker convenience trend into a public market-structure test. The unresolved question is not whether investors want to trade after the closing bell. Some already can. The question is whether exchanges, brokers, data feeds, clearing systems and surveillance teams can make overnight trading liquid enough, supervised enough and understandable enough for ordinary stock orders. ## What the SEC announced The [SEC release](https://www.sec.gov/newsroom/press-releases/2026-69-sec-announces-roundtable-preparations-24-hour-trading) says the roundtable will examine preparations for overnight trading, operations and resiliency in a 24-hour market, and the opportunities and challenges of expansion. The event will be held at the SEC's Washington headquarters, streamed live, and recorded. The agency has not proposed or adopted a new 24-hour trading rule through this announcement. It has opened a public comment channel under File Number 4-913, and said agenda and speaker details will be posted later. ## Why the timing matters The roundtable lands after concrete exchange filings moved the idea past speculation. A [Federal Register notice](https://www.federalregister.gov/documents/2026/04/15/2026-07259/self-regulatory-organizations-the-nasdaq-stock-market-llc-order-granting-accelerated-approval-of) says the SEC approved Nasdaq's amended plan to trade NMS stocks and exchange-traded products 23 hours a day, five days a week, on an accelerated basis. Nasdaq's plan adds a Night Session from 9 p.m. to 4 a.m. Eastern, while keeping a one-hour 8 p.m. to 9 p.m. pause for maintenance, corporate actions, trade-date processing and clearing. The [NYSE FAQ](https://www.nyse.com/publicdocs/nyse/NYSE_Extended_Hours_Trading_FAQ.pdf) says NYSE Arca is targeting December 6, 2026 for its own 23-hour schedule, subject to SEC approvals, SIP availability and DTCC modernization. ![Photo: an empty securities trading floor prepared for an overnight session](/article-images/news-sec-24-hour-trading-roundtable-1.webp) ## The hard part is market quality The strongest countercase is already in the regulator record. The Nasdaq approval notice says liquidity in extended-hours sessions tends to be lower than during regular trading, and that stocks can be more volatile. It also says only limit orders would be permitted during Nasdaq's proposed Night Session. [FINRA investor guidance](https://www.finra.org/investors/insights/extended-hours-trading) makes the retail problem plainer. Extended-hours orders may find fewer counterparties, may execute only partly or not at all, and may receive worse prices than regular-session trades. FINRA also notes that the NBBO, the national best bid and offer, is published only during regular trading hours, so the ordinary regular-hours best-price framework does not apply the same way overnight. Those risks put the roundtable beside other plumbing debates, including recent SEC work on [swap data reporting](/news/news-sec-cftc-swap-data-reporting) and the agency's [IPO roundtable](/news/news-sec-ipo-roundtable). In each case, the policy question is not only what the market is allowed to do, but whether its public records, disclosures and controls are usable when the system is stressed. ## What to watch next The September 17 event should show whether the debate is about a slogan or an operating model. The useful questions are specific: who provides overnight market data, how halts travel across venues, how brokers disclose routing and execution risk, how clearing handles the trade date, and who staffs surveillance when volume is thin. For now, the SEC has announced a public roundtable, not a final market redesign. The [FINRA annual report](https://www.finra.org/rules-guidance/guidance/reports/2026-finra-annual-regulatory-oversight-report/extended-hours-trading) also flags supervision, best execution, customer disclosures, operational readiness and customer support as extended-hours focus areas. The next evidence is the agenda, the speaker list, the comment file, and any exchange or clearing-system readiness updates before December. *This article is informational only and is not investment, legal or regulatory advice.* ## Citation and verification - Cite the canonical HTML article: https://arkolith.com/news/news-sec-24-hour-trading-roundtable - Follow the links in the article to verify claims against the named primary or trustworthy sources. - Publication and update times above are the newsroom's recorded timestamps.