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: Jun/20/2025

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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	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, 70, 92, 94, 98 Tranche 2: Aug/25/2025, channels 74, 76, 80, 86, 90 Tranche 3: Sep/01/2025, channels 72, 78, 82, 84, 88 (date of last information update: Jun/16/2025)
Adjustments to the Transaction Timestamp on Binary UMDF messages	Binary UMDF	No	June/25/2025	June/28/2025	June/30/2025	Adjustments and equalizations on the TransactTime (T5) field: - For the ExecutionSummary message, the AggressorTime and TransactTime fields are currently equal, but they will be adjusted to reflect the expected T4 and T5 values. - For the SecurityStatus and SecurityGroupPhase messages, the TransactTime will be adjusted to reflect the correct timestamp for when this event occurred in relation to the trade messages in auction cases. - In the case of Stop Orders, the TransactTime and AggressorTime will always be the same value of the order that initiated the event.	Tranche 1: Jun/30/2025: channels 68, 70, 92, 94, 98 Tranche 2: Jul/07/2025: channels 74, 76, 80, 86, 90 Tranche 3: Jul/14/2025: channels 72, 78, 82, 84, 88 For more informations about Market Data updates, please check the Change Details Document (date of last information update: Jun/20/2025)
Entrypoint –Information update for GTC/GTD orders with instruments migrated between trading engines	Binary Entrypoint FIX Entrypoint	No	May/05/2025	May/24/2025	May/26/2025	Notification of GTC/GTD orders in the scenario of instrument migration between trading engines, for correct correlation with information from Market Data, given the implementation of the order book management model by price / OrderID Binary EntryPoint ExecutionReport_Modify, highlighting the values of the following fields: secondaryOrderID: new secondary ID of the order OutboundBusiness Header. marketSegmentID: new ID of the matching engine (MarketSegmentID) FIX Entrypoint (Order Entry/Drop Copy) ExecutionReport, highlighting the values of the following fields: Tag 150-ExecType: RESTATED Tag 378-ExecRestatementReason: MARKET_OPTION Tag 198-Secondary OrderID: new secondary ID of the order	The information update will accompany the launch of the order book management model by price / OrderID in Binary Market Data: Tranche 1: May/26/2025: channels 68, 70, 92, 94, 98 Tranche 2: Jun/02/2025: channels 74, 76, 80, 86, 90 Tranche 3: Jun/09/2025: channels 72, 78, 82, 84, 88 (date of last information update: May/21/2025)
New Trading and Co-location Network	All services for Order Entry and Market Data	No	N/A	Simulation (Phase 1) - 07/15/2025 Internal Migration (Phase 2) - 6 tranches / 4 Mocks - TBD 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 - 07/15/2025 Internal Migration (Phase 2) Start - TBD External Migration (Phase 3) Start - TBD (date of last information update: Jun/12/2025)