The U.S. stock market’s consolidated quote system, which feeds real time data feeds to data providers and is used to calculate index values, experienced a processing issue that resulted in some delayed quotes, according to exchange officials familiar with the matter.
The Nasdaq market flagged an issue affecting the quote system about 24 minutes before the close.
Some traders flagged the issue to CNBC, saying that it was affecting the quote for the Dow Jones Industrial Average, which traded in a flat range in about the last 50 minutes of trading.
A number of major exchanges contribute data on their trades to the consolidated quote system, which is run by the Consolidated Tape Association, an industry body.
Index values may have been impacted by the processing delay, but all trades were completed appropriately, the sources said.
After the close the NYSE put out this alert:
“Trading on all NYSE Group exchanges, including closing auctions and real-time submission to DTCC, is functioning normally. Due to the earlier reported CTA issue, there are delays in the publishing of trades and closing prices to the Consolidated Tape for a subset of symbols.”
This is a developing story. Check back for updates.
