Americas Reg Desk

Monday, 2026-08-10 · covering the weekend (7–10 Aug 2026)

United States

No new structural rulemaking over the weekend. One routine SRO filing landed Friday: Nasdaq MRX amended its options rulebook to clarify which equity and index options qualify for its Early Extended Trading Hours session (7:30–9:25am ET) and to specify that orders are not routable during that session — a technical follow-on to the extended-hours framework MRX already had approved, not a new policy. Nasdaq MRX filing

No update over the weekend on the Reg NMS 610(e)/611 rescission proposal (comments due 17 August), Cboe's Rule 8.23 disruptive-trading review (extended to 30 September), NYSE American's extended-hours options filing, or the LTSE market-maker rule proposal (SEC review open to 16 September).

Canada

No material new items over the weekend from CSA, OSC, CIRO or TMX.

Latin America

No material new market-structure items over the weekend from B3/CVM, BMV/BIVA/CNBV, or CMF/CNV.

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