Technical Notice

FINRA Revises Date to Begin Dissemination of Odd Lot Transactions

August 20, 2013

FINRA has revised the date it will begin disseminating odd lot transactions via the Trade Data Dissemination Service (TDDS). The new proposed date for this implementation is Monday, October 21, 2013.

To support odd lot trade dissemination, FINRA will introduce the new sale condition modifier, Odd Lot Trade ("I"), which will be available to any participant to distinguish a trade resulting from a market center's execution in increments less than the defined round lot size. Odd Lot Trade transactions will be included in volume statistical calculations only. The Odd Lot Trade modifier value "I" will appear in the Sale Condition field of TDDS transaction messages.

Testing Details—NTF

Authorized firms can enter and process test odd lot transactions via the NASDAQOMX Testing Facility (NTF) from Monday, September 16, 2013, through Friday, October 18, 2013. Testing in the NTF during this period will be free of charge.

The IP and port information for connecting to TDDS in the NTF environment is listed below.

Subject Information Contact
Testing hours Mon - Fri, 8 a.m. - 6 p.m., ET  
Connectivity requirements (NTF trade reporting) To enter test trades and receive acknowledgements, ensure you are routing messages to the NTF environment.  
Test Connectivity requirements (TDDS) To receive streaming test data, firms may purchase a circuit to directly connect to the feeds or contact their extranet provider to request access to the test data stream.
Group IP =
Port = 50083
Source IP =
To purchase a circuit, contact NASDAQ OMX Subscriber Services at (212) 231-5180, Option #3
If you connect via extranet, please contact your provider.

In addition, user acceptance testing will be offered from 9 a.m. to 12 p.m. ET on Saturday, September 14, 2013, Saturday, October 12, 2013, and Saturday, October 19, 2013.

Test data on these dates will be furnished from the production data stream.

FINRA will remind firms of the user acceptance production tests, including IP and port assignments as the dates approach.

Please contact FINRA Product Management at (866) 899-2107 with questions regarding this notice.