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:

Contact Information:

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).



Email Alert Subscriptions:
Nasdaq offers customers the ability to self select news delivery across various Nasdaq markets. Create and maintain a profile for updating alert preferences and contact information. Visit the enrollment form on the Nasdaq Trader website and sign up today! Please note that if you choose to unsubscribe from an email list, you may no longer receive potentially critical emails from the NASDAQ Stock Market regarding Nasdaq's trading and data products, regulatory issues or marketplace initiatives.

Please follow Nasdaq on Facebook RSS and Twitter.

Nasdaq (Nasdaq: NDAQ) is a leading global provider of trading, clearing, exchange technology, listing, information and public company services. Through its diverse portfolio of solutions, Nasdaq enables customers to plan, optimize and execute their business vision with confidence, using proven technologies that provide transparency and insight for navigating today's global capital markets. As the creator of the world's first electronic stock market, its technology powers more than 90 marketplaces in 50 countries, and 1 in 10 of the world's securities transactions. Nasdaq is home to approximately 3,900 total listings with a market value of approximately $13 trillion. To learn more, visit: business.nasdaq.com.

: