Category: Alerts and Notices

Effective Monday, February 10, 2025, the opening trigger on MEMX Options will be the primary exchange opening print and LULD band, subject to SEC approval. Our Market Operations and Member Experience teams are here for any of your questions.    MEMX Market Operations  mops@memx.com  1-833-415-6677    MEMX Member Experience  memberx@memx.com  1-833-415-6369  

MEMX Equities and MEMX Options will be closed Monday, January 20, 2025, in observance of the Martin Luther King, Jr. holiday. Normal trading will resume on Tuesday, January 21, 2025. MEMX Market Hours and Holiday Schedule Please contact Market Operations with any questions. MEMX Market Operations | mops@memx.com | 1-833-415-6677

To honor the memory of former President Jimmy Carter, MEMX Equities and MEMX Options will be observing the National Day of Mourning on Thursday, January 9, 2025. MEMX will be closed for trading on Thursday, January 9, 2025. Normal trading will resume on Friday, January 10, 2025. Please contact Market Operations with any questions. MEMX […]

Effective Thursday, January 2, 2025, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Changes are reflected in bold text below. Transaction Fees * * * * * Liquidity Provision Tiers Tier  Rebate Per Share  Required Criteria  Tier 1 $(0.0034) (1) Member has an ADAV (excluding Retail Orders) […]

Effective for trading Monday, March 17, 2025, MEMX Equities MEMO, SBE, FIX, and FIX Drop Copy versions 1.10 and 1.11 will be deprecated. MEMX Equities will continue to support version 1.8 and 1.12. If your firm currently has 1.10 or 1.11 versions please contact Market Operations to update the version on or before Friday, March […]

MEMX Equities and MEMX Options will be closed Wednesday, January 1, 2025, in observance of New Year’s Day. MEMX Market Hours and Holiday Schedule Please contact Market Operations with any questions. MEMX Market Operations | mops@memx.com | 1-833-415-6677

MEMX Equities and MEMX Options will be closed Wednesday, December 25, 2024, in observance of Christmas Day. MEMX Equities will follow an abbreviated trading schedule on Tuesday, December 24, 2024, in which the regular market session will conclude at 1:00pm ET and the post-market session will conclude at 2:00pm ET. MEMX Options will follow an […]