True Markets CeFi FIX

FIX (Financial Information eXchange) is the standard protocol for institutional order flow. These pages describe every FIX message the True Markets exchange accepts and sends.

The exchange follows FIX 5.0 SP2. The header carries the application version (FIX50SP2) separately from the session version (FIXT.1.1).

A FIX session is a long-lived connection that you log on to once and keep open. The exchange runs three kinds:

• Order entry: place, amend and cancel orders.
• Market data: read the instrument list and subscribe to order books.
• Drop copy: a read-only copy of every execution and order event on your account, for allocation, compliance and audit.

FIX runs over a private network connection that we set up with your firm during onboarding. See Access and credentials.

The TrueX_FIX50SP2.xml specification file works with QuickFIX and similar engines. For questions or access, email [email protected].

Contents

Administration

Session management, authentication and connection maintenance. Administrative

• Logon (35=A)
• BusinessReject (35=j)
• Heartbeat (35=0)
• TestRequest (35=1)
• ResendRequest (35=2)
• Reject (35=3)
• SequenceReset (35=4)
• Logout (35=5)

Common components

Elements that appear in more than one message type. Common components

• StandardHeader
• StandardTrailer
• Parties (453)

Order entry

Submit, amend and cancel orders, and receive the exchange's reports. Order entry

• NewOrderSingle (35=D)
• OrderCancelRequest (35=F)
• OrderCancelReplaceRequest (35=G)
• ExecutionReport (35=8)
• OrderCancelReject (35=9)

There is no FIX mass cancel. To cancel every open order, use DELETE /v1/cefi/orders/all over REST.

Drop copy

Request and consume the order and trade drop copy feed. Drop copy

• TradeCaptureReportRequest (35=AD)
• TradeCaptureReportRequestAck (35=AQ)
• OrderMassStatusRequest (35=BG)
• ExecutionReport (35=8)

Market data

Subscribe to and receive market data updates. Market data

• SecurityListRequest (35=x)
• SecurityList (35=y)
• SecurityListUpdateReport (35=BK)
• MarketDataRequest (35=V)
• MarketDataRequestReject (35=Y)
• MarketDataSnapshotFullRefresh (35=W)
• MarketDataIncrementalRefresh (35=X)

Change log

Change log lists what changed in each version of this specification.

Next: Administrative, which shows how you log on.