Holiday Reminder Regarding ADF Market Data

In observance of Memorial Day, the ADF System will be closed on Monday, May 28, 2018.

As stated in the data feed interface specifications, FINRA may send out unmarked test data via its data feeds on market holidays. Direct data feed subscribers, including recipients of ADF data, should take the necessary precautions to prevent data corruption.

Thank you for your attention to this matter.

Please contact FINRA Operations at (866) 776-0800 if you have any questions.