Date: March 5, 2021 Description: CAT Clock Synchronization Certification Reminder – Due March 15th
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.
MEMX has updated the computation method for average realized spread and average effective spread as of January 2022, after this report was published.
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 […]
MEMX will be closed Monday, February 15, 2021, in observance of the Presidents’ Day holiday. Normal trading will resume on Tuesday, February 16, 2021.