Americas Reg Desk

Thursday, 2026-09-10 · covering the last 24h

United States

SEC Investor Advisory Committee weighs scrapping the Reg NMS trade-through rule. At a 10 September public meeting, the IAC examined the Commission's pending proposal to rescind Rule 611's trade-through prohibition and the locked/crossed-quote provisions — a rule that has anchored order-routing and best-execution behavior for two decades — alongside a separate panel on AI use in company disclosures. No rule has been adopted; the committee discussed comment letters already filed on the Commission's proposal. SEC press release

No Federal Reserve rulemaking or supervisory guidance reaching market participants in the window.

Canada

No material items from CSA/OSC, CIRO or TMX in the window, and no new Bank of Canada FMI rulemaking.

Latin America

Chile's CMF drops a duplicate fraud-incident reporting requirement. An amendment to General Standard No. 539 (8 September) removes the obligation for regulated entities to separately file with CMF the semiannual fraud-incident disclosure they already publish on their own websites, effective from the second-half-2026 reporting round — a reporting-burden reduction under CMF's 2026–2027 regulatory plan. CMF notice

No material items from B3/CVM/BCB, BMV/BIVA/CNBV/Banxico or Argentina's CNV/BCRA in the window.

Informational only — summaries of public regulatory and central bank sources; not advice.