Nasdaq Revamps UQDF, UTDF Feeds to Avoid Rollover Repeat


Nasdaq is to change the way it divides data alphabetically for distribution over the six channels that serve its UTP quote and trade data feeds, to better manage outbound message traffic across the channels and minimize the risk of sequence number rollovers—which occurred amid high data volumes on Aug. 10.

Nasdaq will change over to the new alphabetical sequence on Nov. 7, after subscribers have been able to process test files from the end of September and participate in user acceptance tests on

Only users who have a paid subscription or are part of a corporate subscription are able to print or copy content.

To access these options, along with all other subscription benefits, please contact [email protected] or view our subscription options here:

You are currently unable to copy this content. Please contact [email protected] to find out more.

To continue reading...

You need to sign in to use this feature. If you don’t have a WatersTechnology account, please register for a trial.

Sign in
You are currently on corporate access.

To use this feature you will need an individual account. If you have one already please sign in.

Sign in.

Alternatively you can request an individual account here: