Collateral Management Type Dimension The information reported classifies the collateral management type. Bilateral Bilateral arrangement means the terms and conditions negotiated between the parties prior to or at inception of the securities financing transaction. This includes the types of assets transferred as collateral, the rules for valuing these assets, the thresholds for margin calls, and whether the collateral received may be reused. Tri Party Tri-party agent means custodian banks to which collateral selection, payment and settlement, custody and management during a repurchase agreement is outsourced.