B3 has implemented an improvement to the margin call process in asset lending transactions. Now, when the borrower returns an asset to the lender, there will no longer be a margin call between the 11:00 AM and 4:00 PM windows. This is because the asset is being returned to the portfolio of the lender who is the asset's owner. This eliminates the need to use liquidity resources during this time interval.

Starting October 1, 2025, B3 will publish securities lending renewal rates directly on its website through the Daily Market Bulletin (BDM). The data will be available in the Clearinghouse chapter on the "Asset Lending - Renewals" table.

B3 has improved the filter functionality in the Subscription and Priority Offer modules of its post-trade platform – RTC (Real Time Clearing) – to facilitate the return of subscription rights by position or instrument. Previously, this process had to be carried out contract by contract, which required more time and operational effort. With the new solution, participants will be able to fill in the total quantity available for return in lots. Furthermore, the quantity field will remain editable, allowing clients to opt for a partial return, according to their needs.

To render contract management more efficient, B3 implemented the functionality rejection per lot on its post-trade platform, RTC (Real Time Clearing). Currently, participants need to reject each amendment, renewal or early settlement individually. With this improvement, clients can reject all available transactions at once, providing greater agility and convenience to the process.

This improvement will bring greater quality to the generation of debentures reference prices, making it more robust and complete.

In the Position Limit System (SLP), the Limit Consumption module provides participants with the possibility to consult the consumption of Limits L1 and L2 by aggregation level and instrument on screen. This improvement will make it possible to extract this information from the screen into an Excel file, facilitating the daily monitoring of this information.

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.

The new 1,500-kilogram package aims to optimize the storage space of agribusiness warehouses and, therefore, reduce the cost of forming and carrying lots certified by the sellers.