The U.S. Securities & Exchange Commission published the agenda and panelist list for its September 18, 2025 roundtable on trade-through prohibitions, to be held at SEC headquarters and webcast live. The program runs from 9:15 a.m. to 4:15 p.m. ET and includes opening remarks from Commissioners Caroline Crenshaw and Hester Peirce and Division of Trading and Markets Director Jamie Selway, a data presentation by the Division’s Office of Analytics and Research, remarks from SEC Chairman Paul S. Atkins, and three panels. The panels cover market participants’ experience with trade-through prohibitions over the past 20 years, the role of a trade-through prohibition in today’s automated market structure including interactions with best execution and ancillary rules such as access fee caps, and potential paths forward including maintaining the status quo, exemptions or modifications, or rescission alongside related rule and guidance changes. In-person attendance requires registration, while online viewing does not; a webcast link will be posted on September 18, and a recording will be made available later. The SEC also directed stakeholders to the event page for information on submitting comments.