Date Filed: January 7, 2026 Description: Proposal to Amend Rule 19.3 to allow for the listing and trading of options on certain Commodity-Based Trusts.
Category: Effective Rule Filings
Below are rule changes that have been submitted by the Exchange for treatment as immediately effective filings and filings that have been approved by the SEC.
Date Filed: December 31, 2025 Description: Proposal to amend the Exchange’s Options Fee Schedule related to the Options Regulatory Fee (“ORF”).
Date Filed: December 30, 2025 Description: Proposal to amend the routing fees for MEMX Options.
Date Filed: December 11, 2025 Description: Proposal to amend Rule 4.7 of the Exchange’s CAT Compliance Rule to be consistent with the CAT NMS Plan that requires broker-dealers with a reporting obligation to the CAT to report whether an original receipt or origination of an order to sell an equity security is a short sale […]
Date Filed: November 25, 2025 Description: Proposal to amend Rule 11.6(q)(1), Round Lot, to conform with a recent amendment to the definition of round lot under Rule 600 of Regulation NMS recently approved by the Commission. The Exchange also proposes to make conforming, non-substantive changes to Exchange Rules 11.9(b)(2)(A)-(D) and Exchange Rule 11.20(d)(1).
Date Filed: November 19, 2025 Description: Proposal to amend Rule 13.4(a) to reflect the current operation of 24X Exchange.
Date Filed: September 30, 2025 Description: Proposed rule change to amend Rule 11.6(a) to clarify the handling of orders that contain both a Post Only instruction and certain other order handling instructions maintained to facilitate compliance with Rule 610(d) of Regulation NMS.
Date Filed: September 30, 2025 Description: Proposal to amend the Exchange’s Fee Schedule to (i) increase the base rebates for Added Non-Displayed Volume in securities priced at or above $1.00 per share; (ii) increase the base rebates for Added Non-Displayed Sub-Dollar Volume; (iii) increase the base rebates provided for Added Displayed Sub-Dollar Volume; (iv) eliminate […]
Date Filed: September 11, 2025 Description: Proposed rule change to amend the Eighth Amended and Restated Limited Liability Company Agreement of MEMX Holdings LLC.
Date Filed: September 11, 2025 Description: Proposed rule change to amend the Eighth Amended and Restated Limited Liability Company Agreement of MEMX Holdings LLC.