The Brazilian Securities and Exchange Commission (CVM) has published, through CVM Resolution No. 35/2021, the obligation to carry out load tests on post-trade infrastructure for all brokerage houses as of December 2023 to be submitted in the 2024 BSM audit. The Capacity Testing Module aims to enable, as per CVM Instruction No. 35/2021, the insertion of mass data and execution of load tests in the SINACOR system (with a focus on Post-Trade) in the test environment of Brokerage Houses and Intermediary institutions. It also aims to generate the indicators necessary for the preparation of the BSM audit report. For more information, please contact our Proximity team SINACOR - [email protected]

B3 created an automatic Income Tax (IR) withholding transaction for CFF – Closed-End Fund Shares. If the IR withholding transaction for CFF is entered before 10.00 AM, the event settlement message will be sent in Gross settlement mode with the tax amount already withheld.  On the other hand, if the IR withholding transaction is entered after 10:00 AM or the event is entered in T0, the flow will be the same as that currently adopted. In other words, two messages will be generated: one with the full amount of the event and one with the amount to be withheld from IR.

B3 will make new files available with a list of assets restricted from trading in the Listed Segment (stocks, units, BDRs, fund shares). New files: ARQ.CAP.001.01 - List of sponsored stocks, units and BDRs with trading restriction and release dates for types of investors (professional, qualified and retail) ARQ.CAP.002.01 - List of Funds (FIP, FIM and FI-INFRA) with trading restriction and release dates for types of investors (professional, qualified and retail. ARQ.CAP.003.01 - List of Funds (FII and FIDC) with trading restriction and release dates for types of investors (professional, qualified and retail). The content of the file is distributed across 3 tabs: Tab 1 “Information about orders” – refers to the tab that will be updated regularly and reflects in a consolidated manner the 'Share Trading Release' forms published by fund administrators as of January 2023; Tabs 2 and 3 “FII – Inventory” and “FIDC – Inventory” – refers to the FII and FIDC funds, respectively, which have not posted recent orders but disclose target audience restrictions in their Monthly Report. Therefore, if a fund appears in the “Information about orders” tab, it will not appear in the “FII – Inventory” or “FIDC – Inventory” tab. ARQ.CAP.004.01 - Target audience for NP BDR Programs and ETF BDR Programs admitted to trading on B3. The files will be available during B3's nightly processing with information for the next trading session. Disclosure of these files will be maintained on the B3 portal.

Rollover of Commodities (Live Cattle - BR1, Corn - MR1, Soybean - SC and SO1, Ethanol - ET1 and Coffee - CR1) will now receive trade Execution Reports. Therefore, for each trade carried out, participants will receive 3 Execution Reports, one with the execution message and the agreed price of the structured rollover transaction and two additional Reports with confirmation of trades and prices of the instruments that make up the strategy legs. Furthermore, these contracts must follow the formulas for pricing the legs, as described below: Short leg: • Nature of Transaction: Different from the strategy transaction • Price: Price of the last short leg trade carried out at the time of transaction registration • Quantity: Same quantity as the strategy transaction Long leg: • Nature of Transaction: Identical to the strategy transaction • Price: Short leg price + strategy traded price • Quantity: Same quantity as the strategy transaction To accomplish this, the BR1, MR1, SC1 and SO1 contracts must have the short leg settlement price changed to the last traded price, as these contracts currently use the settlement price.