B3 Tech Launches

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09/16/2024

B3 Tech Launches | Trading

The table below offers an overview of B3’s upcoming IT & Operations projects. The overview allows market participants to effectively plan their own development and management of the upcoming tech launches. Our full trading Roadmap can be accessed here.

Service: Trading
Update frequency: every 2 weeks
Date of last update: Jul/30/2025

Upcoming

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Summary	Impacted services	Certification required?	Certification	Mock	Production	Description	Observation
Rejection of NewOrderCross Messages with Traders Containing more than Five Characters	FIX EntryPoint Gateway	No	Nov/2024	2nd quarter/2025	2nd quarter/2025	NewOrderCross (35=s) FIX message types will be rejected when the values given in PartyRoles EnteringTrader (452=7) and ExecutionTrader (452=36) have more than five characters.	This change takes into account the non-existence of operators registered on the platform containing more than 5 characters, thus limiting the size of the information present in this field to possibly valid values. (date of last information update: Mar/13/2025)
Order Book Management Based on Price/OrderID	Binary UMDF	No	Position+Priority based book management: May/5/2025 Priority based book management: Jun/30/2025	Mock test (position removal) channels 72 and 94 Jul/26/2025 End of position-based support: Aug/16/2025	May/26/2025	Improvement of order book management of Binary UMDF, which will now be based on priority rather than position. Change Details Document	End of position-based support: Tranche 1: Aug/18/2025, channels 68, 92, 98 Tranche 2: Aug/25/2025, channels 70, 74, 80, 86, 90, 94 Tranche 3: Sep/01/2025, channels 72, 76, 78, 82, 84, 88 (date of last information update: Jul/25/2025)
New Trading and Co-location Network	All services for Order Entry and Market Data	No	N/A	Simulation (Phase 1) - Jul/26/2025 Aug/16/2025 Internal Migration (Phase 2) - Sep/06/2025 Sep/27/2025 Oct/11/2025 Oct/25/2025 External Migration (Phase 3) - TBD	Mid to late Q4	The Migration Plan is split into phases, where in Phase 1 all clients will be able to try the new network with simulation data. In Phase 2, all clients will continue accessing through the old network while B3 moves all its servers from the old to the new network access. It means that for client perspective, nothing will change in the phase 2. In Phase 3, all clients will be released to use their new cross-connections to access B3 services through the new network.	Simulation (Phase 1) Start - Jul/15/2025 Internal Migration (Phase 2) Start - Sep/06/2025 External Migration (Phase 3) Start - TBD (date of last information update: Jul/30/2025)

Summary

Impacted services

Certification required?

Certification

Mock

Production

Description

Observation

Rejection of NewOrderCross Messages with Traders Containing more than Five Characters

FIX EntryPoint Gateway

Nov/2024

2nd quarter/2025

NewOrderCross (35=s) FIX message types will be rejected when the values given in PartyRoles EnteringTrader (452=7) and ExecutionTrader (452=36) have more than five characters.

This change takes into account the non-existence of operators registered on the platform
containing more than 5 characters, thus limiting the size of the information
present in this field to possibly valid values.

(date of last information update: Mar/13/2025)

Order Book Management Based on Price/OrderID

Binary UMDF

Position+Priority based book management:

May/5/2025

Priority based book management:

Jun/30/2025

Mock test (position removal) channels 72 and 94

Jul/26/2025

End of position-based support:

Aug/16/2025

May/26/2025

Improvement of order book management of Binary UMDF, which will now be based on priority rather than position.

Change Details Document

End of position-based support:

Tranche 1: Aug/18/2025, channels 68, 92, 98

Tranche 2: Aug/25/2025, channels 70, 74, 80, 86, 90, 94

Tranche 3: Sep/01/2025, channels 72, 76, 78, 82, 84, 88

(date of last information update: Jul/25/2025)

New Trading and Co-location Network

All services for Order Entry and Market Data

N/A

Simulation (Phase 1) - Jul/26/2025
Aug/16/2025

Internal Migration (Phase 2) -
Sep/06/2025
Sep/27/2025
Oct/11/2025
Oct/25/2025

External Migration (Phase 3) - TBD

Mid to late Q4

The Migration Plan is split into phases, where in Phase 1 all clients will be able to try the new network with simulation data. In Phase 2, all clients will continue accessing through the old network while B3 moves all its servers from the old to the new network access. It means that for client perspective, nothing will change in the phase 2. In Phase 3, all clients will be released to use their new cross-connections to access B3 services through the new network.

Simulation (Phase 1) Start - Jul/15/2025

Internal Migration (Phase 2) Start - Sep/06/2025

External Migration (Phase 3) Start - TBD

(date of last information update: Jul/30/2025)