Derivatives trading generates risk that needs to be measured, monitored, and managed in real time — a computational challenge that has historically required either expensive proprietary systems or teams of quants building bespoke infrastructure. OpenGamma was founded in London in 2009 with the conviction that this infrastructure should be open, shared, and not built from scratch by every bank and asset manager independently. Its platform provides derivatives analytics, margin optimisation, and risk management tools to financial institutions, helping them reduce the cost of collateral and understand their exposure across complex portfolios. The company has focused increasingly on margin optimisation — helping clients reduce the amount of collateral they need to post against derivatives positions, a cost that became acutely visible after post-2008 regulatory reforms dramatically increased margin requirements across the industry. In capital markets, where the cost of regulatory compliance has reshaped the economics of almost every product and strategy, tools that reduce that cost without increasing risk are genuinely valuable. OpenGamma is a quiet but important part of the infrastructure that keeps derivatives markets functioning efficiently.