IOI Composer

IOI Composer sends an indication of interest from the simulator to the connected initiator. It is available from a session and requires write access to that session.

Send an IOI

Enter Symbol, Side, and Quantity. Price, quality, valid-until time, and text are optional. Select Send IOI only after confirming the session is logged on; the send uses that session's live FIX connection.

The composer assigns the IOIID and records the sent IOI in the session list. Inspect the outbound message in Blotter Out to verify the generated identifier and field values.

Cancel an IOI

The Sent IOIs table lists the symbol, side, quantity, optional values, status, and sent time. Select Cancel on an active IOI, then confirm the action. The simulator sends a cancel that references the original IOI and updates the list when it succeeds.

An unknown or already cancelled IOI cannot be cancelled again. If a send or cancel fails, first verify the session is logged on, then inspect Blotter Out and the session connection details.

Updated 2026-09-08 · Edit on GitHub