
Jonathan Ellenberger
Founding Director, CEO
Whilst establishing the fixed interest derivative desk for one of the broking houses at the Johannesburg Stock Exchange, Jonathan identified the need for a reliable derivative pricing system. In 1987, RATT-Pac, the origin of the Risk101/Assidium brands, was launched. In 2004 Jonathan opened the Australian office. His team began original design of the Registry in 2010. He is currently based in London where he heads up the UK-Europe division of Assidium and oversees the global portfolio.






