Regulatory Notice 21-28
Summary
FINRA has adopted new Rule 6439 (Requirements for Member Inter-Dealer Quotation Systems),1 which implements additional requirements for firms that operate systems that regularly disseminate the quotations of identified broker-dealers in OTC Equity Securities (each an “inter-dealer quotation system” or “IDQS”).2 Rule 6439 will become effective on October 1, 2021, except for paragraph (d)(1)(B), which relates to the collection of order-level information.