Americas Reg Desk

Tuesday, 2026-08-11 · covering the last 24h

United States

Industry-wide regulatory-halt standard goes live via the SIP; IEX files the latest conforming rule change. On August 10 the amended CTA/CQ Plan's new common regulatory- and operational-halt framework took effect through the Securities Information Processor, standardising how primary listing markets declare and communicate halts triggered by SIP outages, material SIP latency and other cross-market events. Exchanges have spent the year filing conforming rulebook changes — Cboe BZX's new Rules 11.29/11.30 in March, Nasdaq's Rule 4120 update in July, NYSE American's halt-list amendments in April — and IEX filed the latest on August 11, amending Rule 11.280 so it no longer cancels all outstanding orders during a Regulatory or Operational Halt, aligning its practice with the other SROs. IEX filing, Federal Register

No update in this window on the Reg NMS 610(e)/611 rescission proposal (comments due 17 August), amended Rule 605 execution-quality reporting (effective since 1 August, first reports due end September), Cboe's Rule 8.23 disruptive-trading review (SEC review to 30 September), NYSE American's extended-hours options filing, the LTSE market-maker rule proposal (SEC review to 16 September), or Nasdaq's 23-hour trading rollout (targeted 6 December, pending SIP operability).

Canada

No material new items in the last 24 hours from CSA, OSC, CIRO or TMX.

Latin America

No material new market-structure items in the last 24 hours from B3/CVM, BMV/BIVA/CNBV, or CMF/CNV.

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