ADF Announcements

Posted: November 20, 2014

Holiday Reminder Regarding ADF Market Data

In observation of the Thanksgiving holiday, the ADF System will be closed on Thursday, November 27, 2014. 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. 
Please be advised that the ADF system will close early on Friday, November 28, 2014 at 1 p.m., E.T. See the table below for a schedule of modified hours. Thank you for your attention to this matter. Please contact FINRA Operations at (866) 776-0800 if you have any questions.


Market SessionNormal HoursModified Hours for
Friday, November 28, 2014
Pre Market Session8 a.m. to 9:30 a.m.8 a.m. to 9:30 a.m.
Regular Market Session9:30 a.m. to 4:00 p.m.9:30 a.m. to 1:00 p.m.
Post-Market Trading Session4 p.m. to 6:30 p.m.1 p.m. to 3:30 p.m.