Americas Reg Desk

Wednesday, 2026-09-16 · covering the last 24h

United States

No material SEC, CFTC or FINRA rulemaking, and no new SRO rule filings of structural weight from NYSE, Nasdaq, Cboe or IEX, in the window — the day's Federal Register entries were fee-schedule and connectivity housekeeping filed days earlier. No Federal Reserve rulemaking or supervisory guidance reaching market participants either.

Canada

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

Latin America

Argentina's CNV bars checks as a capital-markets settlement method. The Comisión Nacional de Valores issued Resolución General 1166/2026, eliminating checks as a means for agents to receive or deliver client funds; only bank transfers from an account in the client's name, or a CVU virtual account linked to the client's CUIT, are now permitted. The rule took effect 15 September 2026 and is aimed at fund traceability and eliminating payment rejections; it does not affect the separate trading of post-dated checks as instruments. La Nación (secondary; CNV resolution text not independently reachable)

No other material items from B3/CVM/BCB, BMV/BIVA/CNBV/Banxico or Chile's CMF/BCCh in the window.

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