Americas Reg Desk
Thursday, 2026-09-24 · covering the last 24h
United States
NYSE affiliates extend clearly-erroneous-execution review and LULD price bands to overnight trading. NYSE, NYSE American, NYSE Arca, NYSE National and NYSE Texas each filed near-identical, immediately effective rule changes amending Rule 7.10 to make trades during the new Overnight Protected Hours eligible for clearly-erroneous-execution review and to apply Overnight Price Bands under the LULD Plan to that session; the changes become operative when industrywide 23/5 trading launches on 6 December 2026. Federal Register notice (NYSE National)
Texas Stock Exchange files first substantive halt/auction rulebook change. TXSE proposed amendments governing order processing during a regulatory halt and refining its IPO, halt and volatility closing auctions — among the newly launched exchange's first rulebook filings of structural weight. Federal Register notice
Coinbase Derivatives proposes customer margin regime for security futures. SR-COIN-2026-001 would establish a new Rule 1215 setting customer-level margin rates, eligible collateral and liquidation requirements for Coinbase's SEC-registered security-futures products, including its perpetual single-stock futures — the margin plumbing needed before that crypto-adjacent venue can scale customer activity. Federal Register notice
No new FINRA items beyond the fee-schedule delay already reported; no material CFTC rulemaking touching equity markets, and no Federal Reserve Board rulemaking or supervisory guidance reaching market participants, in the window.
Canada
CIX Trading launches as Canada's first new equity marketplace in over a decade. The ATS, approved earlier by the OSC and registered with CIRO, began trading a small slate of securities on 21 September and expanded to roughly 100 names by 23 September, introducing three new execution mechanisms (IntelligentCross MIDPOINT, ASPEN and ASPEN VERT) under its existing regulatory approvals. CIX Trading press release
No material new CSA/OSC, CIRO or TMX rulemaking, and no new Bank of Canada FMI rulemaking, otherwise in the window.
Latin America
No material items from Brazil's CVM/B3/BCB, Mexico's CNBV/BIVA-BMV/Banxico, Chile's CMF/BCCh or Argentina's CNV/BCRA in the window.
Informational only — summaries of public regulatory and central bank sources; not advice.