Scope of the Simulated Trading Session on 09/13/2025 – PUMA Trading System

Aiming to support participants in planning changes and implementations, a simulated trading session of the PUMA Trading System will be held on 09/13/2025, with market participation. During this session, the following system changes will be validated:
 

• New Network

       - For the new network, we are concluding the first phase and beginning the second.

         On the mock session of Sep/13, B3’s internal switch in the Binary Market Data for Derivatives will be                       available.

        Please note that there is no change in client connectivity at this initial stage.
 

• Order Book Management Based on Price/OrderID

     - Performance improvement in the generation of publications and market data.

     - An approximate 10% reduction in latency between T11 and T5 is expected.

Tranche 1:
09/15/2025
Channels 68, 70, 92, 94, 98

Tranche 2:
09/22/2025
Channels 74, 76, 80, 86, 90

Tranche 3:
09/29/2025
Channels 72, 78, 82, 84, 88

For more information about Market Data updates, please refer to the Change Details Document.
 

1 . Simulated Trading Session Schedule:

2 . Morning Test of the Electronic Trading System

Participation from all brokers is essential in the morning test, to be held on 09/15/2025 (Monday):

• Derivatives: from 7:00 AM to 7:45 AM
• Equities: from 7:00 AM to 8:00 AM
• Environment: Production

3. Participation Confirmation:

Participation in the simulated trading session must be confirmed by 12:00 PM on 09/12/2025 (Friday), exclusively via email to [email protected], with the subject “Simulated Trading Session,” including the institution’s identification, the list of participants’ names and their respective phone numbers, as well as contact emails.

Upon confirmation, the participant will receive the test script, which must be completed and sent back to the email mentioned above.

For further clarification, please contact (11) 2565-5021/5022.

Access to the Support Material prior to the Simulated Trading Sessions is essential for additional participation guidelines.