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 ET.
2/23/2021 10:02 ET – The Exchange is currently investigating an issue with market data ingestion in a subset of symbols in the O-Z range.