03/16/2021 – The issue has been resolved and routing will be enabled at 09:00 AM ET. All MEMX systems are operating normally. Trading on MEMX was not impacted. 03/16/2021 07:02 ET – MEMX has been made aware of a service provider connectivity issue impacting routing to away Exchanges and has therefore disabled routing. All MEMX systems […]
Category: Systems Alerts
3/4/2021 18:35 ET – Please be advised that due to a software error the Exchange did not report trades to the CTA or UTP SIPs on 3/4/2021 from 15:09 ET to 17:00 ET. The error was corrected, and trade reporting was successfully completed for this symbol range at 18:32 ET. 3/4/2021 15:25 ET – SIP […]
03/01/2021 19:05 ET – Please be advised that due to a partial disruption in the Exchange Trade Reporting Service, CTS (Tape A and B) prints on MEMX were delayed for symbols N-T on March 1, 2021. Trade reporting was successfully completed late for this symbol range.
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 […]
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 […]
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.
On October 12, 2020, the Exchange experienced an issue with a subset of internal monitors. The trading platform was not impacted. The issue manifested itself in the inability to fully view the trading data in a subset of the operational monitoring dashboards. Out of an abundance of caution for the greater marketplace, MEMX chose to halt pre-market trading at 09:15 […]