Rapid Addition Limited
Financial ServicesEngland, United Kingdom11-50 Employees
Rapid Addition Limited, based in London, England, develops electronic-trading infrastructure for the financial services sector. Its RA Platform aims to deliver high performance and configurability across a range of trading workflows, including client onboarding, routing, risk logic, liquidity connectivity, and price dissemination, while remaining agnostic to asset class and message protocol. The system is designed to scale with market volatility and volume, leveraging a combination of hardware acceleration and software, and can be deployed on-premises or in the cloud. Rapid Addition has a history as an early participant in electronic messaging technology, and it positions its platform as a foundational technology for advancing electronic trading. In July 2025, the company announced a partnership with TradingStack.io to provide institutional-grade connectivity to global digital asset markets.