Discover organizations tagged with initial-margin that build SIMM-based initial margin models, margin calculation engines, collateral optimization platforms, and enterprise derivatives risk-management solutions. This curated list presents providers implementing initial margin for cleared and uncleared derivatives, portfolio margining, margin APIs, and regulatory compliance (EMIR, Dodd-Frank, Basel III), with long-tail insights on margin modelling, capital efficiency, and collateral transformation. Use the filtering UI to compare vendors by technology stack, jurisdiction, product type (clearinghouses, brokers, risk vendors), and deployment model, and get actionable guidance for vendor evaluation, integration pilots, and production rollouts to optimize capital and reduce counterparty risk.