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The ArcaDirect API is designed for clients seeking the fastest order entry method available for both equities and options on NYSE Arca. The ArcaDirect API does not require all the functionality the NYSE Arca FIX host provides. The advantages of using the API to enter orders into the NYSE Arca include:

  • Smaller incoming and outgoing messages than standard FIX messages. Because of the smaller message size, the ArcaDirect API interface requires much less bandwidth than an NYSE Arca FIX interface.
  • Very little message translation required because it is written in NYSE Arca’s internal protocol. Our FIX host is required to translate FIX messages into internal API messages prior to delivering them to the exchange platform. The fact that this translation is not required for API messages saves processing time.

    • With the smaller message size, some equity order types are not available with the ArcaDirect API:

    • Timed orders

    Downloads

    application/pdf iconArcaDirect Explicit Symbology Changes
    application/pdf iconArcaDirect Spec Version 3_2
    application/pdf iconArcaDirect Spec Version 4_0

    Some order types are only available through verbose message format found in ArcaDirect API version 3.2 or above:

    • Pegged orders
    • Discretionary orders
    • Primary Orders

    All other functionality is available.

    Production Support for ArcaDirect API
    Please call the Production Support Hotline at 888-689-7739 Option 1 or email connectivity@nyx.com for any production related issues, questions, or to request a new production session.

    Testing your API applications
    Please call the Firm Testing Hotline at 888-689-7739 Option 2 or email firmtesting@nyx.com to request a test session. The test platform contains all the functionality that our production platform contains. You will receive fills and outs.

    Certifying your API applications
    The certification process for the ArcaDirect API is manual. To schedule a test please call the Firm Testing Hotline at 888-689-7739 Option 2 or email firmtesting@nyx.com. A representative will provide you with a test script and walk you through the certification process.

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