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Friday, November 08, 2019

Data Technical News #2019 - 25
Nasdaq to Add an Additional Summary Spin to the Summary Spin Transmission Schedule

Markets Impacted:

Products Impacted:

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What you need to know:

Effective Monday, December 9, 2019, Nasdaq will add an additional Summary Spin at 8:05 a.m. ET to the Summary Spin Transmissions. The new spin will be spin #1 in the transmission schedule.

What is changing?

Beginning Monday, December 9, 2019, Nasdaq will add an additional Summary Spin to the Summary Spin Transmissions.

Time Transmission Message Category Message Type(s) Originator ID Session ID
8:05 Start of Summary Spin Control Message for NFN Data Service Spin #1 C P F P
8:05 NFN Statistics for NFN Data Service Spin #1 A G F P
8:05 - 8:06 NFN Summary Spin #1 F G, I F P
8:06 End-of-Summary Spin Control Message for NFN Data Service Spin #1 C S F P

This additional spin will affect the existing spin count as follows:

Code Value
1 8:05 a.m., ET
2 6:05 p.m., ET
3 6:25 p.m., ET
4 6:45 p.m., ET
5 8:00 p.m., ET

Please refer to the NFNDS specification document for details on the outbound data feed message changes.

How can I test this NFN change?

Nasdaq will offer one Saturday User Acceptance Test (UAT) for NFN issuers, pricing agents and market data vendors on:

  • Saturday, December 7, 2019 - Confidence Test

Firms wishing to participate in the UATs should complete and submit the NFN testing registration form to NFN Operations by the Thursday before the scheduled test date.

Where can I find additional information?

Contact NFN Operations at +1 301 978 5307 (Option #6).


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