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Rule 19b-4

Definition

Rule 19b-4 is a regulation under the Securities Exchange Act of 1934 in the United States, requiring self-regulatory organizations to file proposed rule changes with the Securities and Exchange Commission (SEC). This rule governs the process for exchanges to introduce new products, such as exchange-traded funds (ETFs), or modify existing trading rules. It serves as a critical procedural step for new financial product listings. Compliance ensures regulatory oversight of market operations.