MEMX LLC Rulemaking

We encourage the public to submit comments on the following MEMX LLC filings during the comment period. For detailed instructions, please read How to Submit Comments. We strongly encourage you to send your comments electronically. They will be posted on this website.

Chronological List
Third Quarter |  Second Quarter |  First Quarter

MEMX File Number List for 2021

Additional Archives

Chronological List for 2021

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Release No. Date Details
Third Quarter
SR-MEMX-2021-11
34-92896 Sep. 8, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: 21 days after publication in the Federal Register
Additional Materials: Exhibit 5
SR-MEMX-2021-10
34-92844 Sep. 1, 2021 Notice of Filing of a Proposed Rule Change to Establish a Retail Midpoint Liquidity Program
Comments due: 21 days after publication in the Federal Register
SR-MEMX-2021-09
34-92579 Aug. 5, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend its Fee Schedule
Comments due: September 1, 2021
Additional Materials: Exhibit 5
Second Quarter
SR-MEMX-2021-07
34-92150 Jun. 10, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: July 7, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-06
34-91748 May 4, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Related to the Handling of Displayed Odd Lot Orders and Non-Displayed Orders that Become Locked or Crossed
Comments due: June 1, 2021
Additional Materials: Exhibit 5
Comments received are available for this proposal.
SR-MEMX-2021-04
34-91478 Apr. 5, 2021 Notice of Filing and Order Granting Accelerated Approval of a Proposed Rule Change to Amend the Corporate Documents of the Exchange's Parent Company
Comments due: April 30, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-05
34-91457 Apr. 1, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Extend the Current Pilot Program Related to MEMX Rule 11.15, Clearly Erroneous Executions
Comments due: April 28, 2021
Additional Materials: Exhibit 5
First Quarter
SR-MEMX-2021-03
34-91256 Mar. 4, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend Exchange Rule 11.6(h)(1) to Enable Users to Include a Limit Price on a Pegged Order with a Primary Peg Instruction
Comments due: March 31, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-02
34-91094 Feb. 10, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: March 10, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-01
34-91027 Feb. 1, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Add Interpretation and Policy .03 to Exchange Rule 4.2 Regarding the Provision of Members' Broker-Dealer Annual Reports
Comments due: February 26, 2021
Additional Materials: Exhibit 5
SR-MEMX-2020-17
34-90849 Jan. 5, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend Exchange Rule 11.8(b) Relating to the Handling of Limit Orders When the National Best Bid or Offer is Not Available
Comments due: February 1,2021
Additional Materials: Exhibit 5

File Number List for 2020

Release No. Date Details
SR-MEMX-2021-11
34-92896 Sep. 8, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: 21 days after publication in the Federal Register
Additional Materials: Exhibit 5
SR-MEMX-2021-10
34-92844 Sep. 1, 2021 Notice of Filing of a Proposed Rule Change to Establish a Retail Midpoint Liquidity Program
Comments due: 21 days after publication in the Federal Register
SR-MEMX-2021-09
34-92579 Aug. 5, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend its Fee Schedule
Comments due: September 1, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-07
34-92150 Jun. 10, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: July 7, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-06
34-91748 May 4, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change Related to the Handling of Displayed Odd Lot Orders and Non-Displayed Orders that Become Locked or Crossed
Comments due: June 1, 2021
Additional Materials: Exhibit 5
Comments received are available for this proposal.
SR-MEMX-2021-05
34-91457 Apr. 1, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Extend the Current Pilot Program Related to MEMX Rule 11.15, Clearly Erroneous Executions
Comments due: April 28, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-04
34-91478 Apr. 5, 2021 Notice of Filing and Order Granting Accelerated Approval of a Proposed Rule Change to Amend the Corporate Documents of the Exchange's Parent Company
Comments due: April 30, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-03
34-91256 Mar. 4, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend Exchange Rule 11.6(h)(1) to Enable Users to Include a Limit Price on a Pegged Order with a Primary Peg Instruction
Comments due: March 31, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-02
34-91094 Feb. 10, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Amend the Exchange's Fee Schedule
Comments due: March 10, 2021
Additional Materials: Exhibit 5
SR-MEMX-2021-01
34-91027 Feb. 1, 2021 Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Add Interpretation and Policy .03 to Exchange Rule 4.2 Regarding the Provision of Members' Broker-Dealer Annual Reports
Comments due: February 26, 2021
Additional Materials: Exhibit 5