19b-4 Rule

Definition ∞ The 19b-4 Rule governs how self-regulatory organizations propose changes to their operational rules. It mandates that exchanges file these proposed rule alterations with the Securities and Exchange Commission (SEC) for public review. The SEC then evaluates these submissions to ensure adherence to federal securities laws, particularly concerning investor protection and market fairness. This regulatory procedure is especially pertinent to the introduction of new financial instruments, including those tied to digital assets.
Context ∞ The 19b-4 Rule plays a pivotal role in the regulatory approval pathway for spot Bitcoin exchange-traded funds (ETFs) and other cryptocurrency investment products in the United States. Ongoing discussions frequently highlight the SEC’s rigorous application of this rule, often citing concerns about potential market manipulation and the necessity of robust surveillance-sharing agreements. Future regulatory actions will likely continue to shape the landscape for digital asset ETPs, with potential modifications to accommodate evolving market structures.