The SEC will discuss preparations for 24-hour trading at its September 17, 2026, roundtable in Washington, D.C.

SIFMA argued in a letter to the SEC that existing rules already protect investors in recommended and advised novel-ETF transactions. The association also asked for a new naming convention for all ETFs.

Two changes to the Nacha Operating Rules take effect September 18, 2026: they accelerate funds availability for certain non-Same Day ACH credit entries and replace the definition of International ACH Transactions.

The OCC, the Federal Reserve, the FDIC, FinCEN, and the National Credit Union Administration issued a joint statement clarifying Suspicious Activity Report confidentiality requirements for banks and credit unions communicating with customers about potentially fraudulent transactions.

SIFMA urged the CFTC and SEC to allow economically related positions to be margined together across jurisdictional lines. The regulators' joint request for comment on margining asked how the agencies could expand margining for cash securities, options, futures, swaps, and non-securities assets such as digital commodities.