Date: April 21, 2022 Description: Certain members designated by MEMX are now required to participate in at least one industry-wide Market-Wide Circuit Breaker test each year.
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This notice is being issued to inform you of the recently published Securities and Exchange Commission (SEC) order described in Fee Rate Advisory #1 for Fiscal Year 2022, in which the SEC announced the Section 31 transaction fee rate applicable to securities transactions on the exchanges and over-the-counter markets will be $22.90 per million dollars for covered sales occurring on or after […]
Effective Monday, January 3, 2022, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Reduce the standard rebate for added displayed volume. Reduce the rebate and modify the criteria under Liquidity Provision Tier 1. Modify the criteria under Liquidity Provision Tier 2. Adoption of a new Liquidity Provision […]
Effective Monday, November 1, 2021, MEMX will be implementing the following changes to transaction fees, subject to filing with the SEC: Adoption of a Targeted Step-Up Tier that provides an additive rebate for executions of added volume in securities >=$1 (other than displayed Retail Orders) if one of two specified volume thresholds is achieved in […]
On February 1, 2021, MEMX published Regulatory Notice 21-2: Mandatory Participation in Regulation SCI Disaster Recovery Testing. In coordination with other market centers as part of the SIFMA organized industry test, and in support of Regulation System Compliance and Integrity requirements, MEMX will host a test of its secondary/disaster recovery facilities on Saturday, October 23, 2021.  The scope for […]
MEMX will be closed Monday, May 31, 2021 in observance of Memorial Day. Normal trading will resume on Tuesday, June 1, 2021.
2/23/2021 12:07 ET – The Exchange will resume trading in symbols M-Z at 12:10 ET, using secondary source market data for this symbol range. The market data ingestion issue has been resolved. All Exchange systems are now operating normally. 2/23/2021 10:32 ET – The Exchange has halted trading in symbol range M-Z as of 10:32 […]
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US Equities
Instrument Directory
Click Here for the Instrument Directory Download What is the mapping in the file? The securityId field is the positive integer value used in the MEMOIR feeds when market data updates are reported for the product. The symbol field is a string that contains the CMS Symbol Root for the product. The symbolSfx field is […]
Agreements, forms, and policies related to membership with, connecting to, and receiving market data from MEMX are provided below for reference and review. Participants interested in becoming a member of, connecting to, and/or receiving market data from MEMX should follow the on-boarding process available at: https://memxtrading.com/onboarding. Membership Connectivity Market Data
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