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Computer-to-computer interface (CTCI) is a method by which Nasdaq subscribers can enter transactions, such as Nasdaq Market Center orders and trade reports, from their computer systems to Nasdaq's computer systems without using a Nasdaq Workstation. The CTCI interface is based on the Common Message Switch protocol.

Benefits & Features

The Nasdaq CTCI protocol supports the following applications:

Nasdaq Fund Network (NFN)

Nasdaq is currently able to support IBM WebSphere MQ over the CTCI TCP/IP interface connection. IBM WebSphere MQ, a message queue middleware that extends business applications and enables them to communicate with one another. It also offers customers the ability to incorporate different systems into a common messaging infrastructure. CTCI TCP/IP customers may implement WebSphere MQ software to facilitate interaction between their CTCI and other internal systems.

Please visit our MQ Subscriber resource page for more information regarding IBM WebSphere MQ over the CTCI TCP/IP interface.

Who Can Participate

All Nasdaq market participants, including market makers, order-entry firms and ECNs can participate.

How to Subscribe

Nasdaq market participants can subscribe for new connectivity or update an existing service by completing the Nasdaq Port Request Form (PDF) and fax it to Nasdaq Subscriber Services at +1 212 231 5426.

Additional Resources


Technical Support

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