At 15:55 ET the Exchange experienced a matching engine failure impacting symbol range U through Z. The software failure causing the outage has been identified and resolved. The Exchange will resume normal operations on 2/24/2021. Earlier in the day, the Exchange experienced an issue with its ticker plant. After several unsuccessful attempts to failover to […]
Author: Lauren Strathman
2/23/2021 19:27 ET – At 15:55 ET the Exchange experienced a matching engine failure impacting symbol range U-Z. The software failure causing the outage has been identified and resolved. The Exchange will resume normal operations on 2/24/2021. 2/23/2021 15:58 ET – The Exchange is currently experiencing an issue with the matching engine supporting symbols U-Z.
2/23/2021 12:40 ET – Due to impact from the market data ingestion issue experienced earlier today the Exchange has moved to its secondary market data source for the remainder of the symbol ranges, A-L. The change occurred from 12:37 ET – 12:38 ET.
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 […]
On February 8, 2021, the Exchange experienced an issue with its Ticker Plant during pre-market start-up procedures. The Exchange delayed the open of the pre-market session until 07:14 ET. At 07:14 ET the Exchange opened utilizing back-up Ticker Plant processes. The Exchange moved back to primary Ticker Plant processes at 08:52 ET prior to the […]
MEMX will be closed Monday, February 15, 2021, in observance of the Presidents’ Day holiday. Normal trading will resume on Tuesday, February 16, 2021.
02/08/2021 07:17 ET – MEMX experienced an issue with its Pre-Market start-up process. The issue has been fully resolved. The Pre- Market session opened at 07:14 ET. All MEMX systems are operating normally. 02/08/2021 06:50 ET – MEMX is currently investigating a potential issue and will not open the pre-market session until further notice.
Date: February 1, 2021 Description: Mandatory Participation in Regulation SCI Disaster Recovery Testing
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December 2020
This notice is being issued to inform you of the recently published Securities and Exchange Commission (SEC) order described in Fee Rate Advisory #2 for Fiscal Year 2021, 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 $5.10 per million dollars effective Thursday, February 25, 2021. Until that […]