Regulation NMS

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Regulation NMS

Definition

Rules adopted by the Securities and Exchange Commission in 2005 to enhance and modernize the national market system. Regulation NMS reorganized the existing rules promulgated pursuant to § 11A of the Securities Exchange Act of 1934 (Rules 600–609) and added the access-to-quotations rule (Rule 610), the order-protection rule (Rule 611), and the sub-penny rule (Rule 612).

Related rules

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— In the Matter of UBS Securities LLC

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— In the Matter of Wedbush Securities Inc.

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