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US Options User Manual

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Effective Rule Filings Rule Filings

SR-MEMX-2023-08: Proposed Changes to Fee Schedule

Date Filed: April 28, 2023 Description: Proposed rule change to amend the Fee Schedule to: (i) modify the Liquidity Provision Tiers; and (ii) modify the required criteria under the Displayed Liquidity Incentive (“DLI”) Tiers.

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Effective Rule Filings Rule Filings

SR-MEMX-2023-07: Proposed Changes to Fee Schedule

Date Filed: March 31, 2023 Description: Proposed rule change to amend the Fee Schedule to amend the Fee Schedule to modify the required criteria under NBBO Setter/Joiner Tier 1.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-03: Mandatory Participation in Market-Wide Circuit Breaker Testing

Date: March 24, 2023 Description: Reminder regarding mandatory Market-Wide Circuit Breaker Testing for certain Members designated by MEMX pursuant to Exchange Rule 11.16.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-02: CAT Clock Synchronization Certification Reminder – Due March 15th

Date: February 9, 2023 Description: Reminder of Consolidated Audit Trail Compliance Rule requirement to complete an annual certification for Business Clock Synchronization by March 15th of each year.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-01: Mandatory Participation in Regulation SCI Disaster Recovery Testing

Date: February 8, 2023 Description: Mandatory Participation in Regulation SCI Disaster Recovery Testing

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Alerts and Notices Regulatory Notices

Regulatory Notice 22-07: Updated Clearly Erroneous Execution Rules – Now Effective

Date: October 3, 2022 Description: MEMX, in coordination with all U.S. equities exchanges, has updated the harmonized clearly erroneous execution (“CEE”) rule as outlined in the Notice below and the updated rule is now effective.

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Effective Rule Filings Rule Filings

SR-MEMX-2022-22: Proposed Changes to Fee Schedule

Date Filed: July 29, 2022 Description: to: Proposed rule change to amend the Fee Schedule to:  (i) modify the required criteria under the Step-Up Additive Rebate; (ii) modify the required criteria under the Liquidity Removal Tier 1; and (iii) increase the rebate for executions of all orders in securities priced below $1.00 per share that […]

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Alerts and Notices Regulatory Notices Uncategorized

Regulatory Notice 22-06: Nominations for Member Representative Director 

Date: July 6, 2022 Description: Notice of Annual Meeting and Nominees for Member Representative Director Positions on the Exchange’s Board of Directors

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Alerts and Notices Regulatory Notices

Regulatory Notice 22-05: Consolidated Audit Trail (“CAT”) Full Customer Account Information System (“CAIS”) Production Certification and Compliance Deadlines Extended

Date: June 3, 2022 Description: The Participants have decided to postpone the full Customer Account Information System (“CAIS”) compliance deadline from July 11, 2022, to a date projected to be in Q4 2022.