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Effective Rule Filings Rule Filings

SR-MEMX-2023-18: Amendment to Rule 19.5

Date Filed: September 6, 2023 Description: Proposal to amend Rule 19.5, Interpretation and Policy .05(f) to account for conflicts between different provisions within the Short Term Option Series Rules, extend current $0.50 strike price intervals in equity options to short term options with strike prices less than $100, and make other clarifying changes.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-09: Test Symbol Usage

Date: August 14, 2023 Description: Reminder regarding test symbol usage.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-08: Options Principal Requirements

Date: August 7, 2023 Description: Regulatory notice to inform all MEMX Options Members about the Options Principal requirements.

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-07: MEMX Options – Options Regulatory Fee

Date: August 1, 2023 Description: MEMX Options – Notice Announcing Options Regulatory Fee Effective September 13, 2023, subject to filing with the SEC.

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Effective Rule Filings Rule Filings

SR-MEMX-2023-16: Proposed Changes to Fee Schedule

Date Filed: August 3, 2023 Description: Proposed rule change to amend the Fee Schedule to: (i) reduce the base rebate for executions of orders in securities priced at or above $1.00 per share that add displayed liquidity to the Exchange (such orders, “Added Displayed Volume”); (ii) modify the Liquidity Provision Tiers by modifying the rebate […]

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-06: Obvious Error

Date: July 27, 2023 Description: Process for the Nullification and Adjustment of Options Transactions including Obvious Errors

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-05: Options Market Maker Obligations

Date: July 21, 2023 Description: Options Market Maker Obligations and Excused Withdrawal of Market Maker Quotations

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Alerts and Notices Regulatory Notices

Regulatory Notice 23-04: MEMX Regulation Member Outreach

Date: July 18, 2023 Description: MEMX Regulation Member Outreach — Member Firm Compliance Obligations, Document Submission, Electronic Blue Sheets, and CRD

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Effective Rule Filings Rule Filings

SR-MEMX-2023-10: Proposed Changes to Fee Schedule

Date Filed: June 1, 2023 Description: Proposed rule change is to amend the Fee Schedule to modify the method by which the Exchange provides the rebate under Liquidity Provision Tiers 4, 5, and 6 such that if a Member achieves any of the criteria under Liquidity Provision Tiers 4, 5, or 6 in a given […]

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Effective Rule Filings Rule Filings

SR-MEMX-2023-09: Proposed Changes to Fee Schedule

Date Filed: May 31, 2023 Description: Proposed rule change is to amend the Fee Schedule to (i) modify the Liquidity Provision tiers by modifying the required criteria under Liquidity Provision Tier 4 and adopting a new Liquidity Provision Tier 6, and (ii) modify the Liquidity Removal Tiers by increasing the fee and modifying the required […]