Case Study: Johannesburg Stock Exchange achieves 100% accurate real-time post-trade settlements with Denodo Technologies

The Johannesburg Stock Exchange Leverages the Denodo Platform to Verify Billions of Dollars in Trades Every Day

The Johannesburg Stock Exchange (JSE), the largest stock exchange in Africa and one of the world’s largest by market cap, faced a complex data challenge: over 180 disparate data sources and 120 applications had to work in perfect harmony to ensure accurate, real-time post-trade settlements. Traditional batch ETL processes were too slow and produced inconsistent versions of data, creating risk and undermining confidence in settlement accuracy—which in a high-speed trading environment had to be 100% reliable.

To solve this, the JSE implemented the Denodo Platform to create a logical data layer using data virtualization. More than 1,700 base views aggregate data from heterogeneous systems into derived and interface views, processing roughly 2 billion rows per month to deliver a real-time single source of truth. The result: simplified, accelerated data integration, guaranteed 100% accurate post-trade settlements, and increased business agility that lets the JSE run multiple projects simultaneously.

Johannesburg Stock Exchange

Chester Enslin

Head of IT Enterprise Integration and Software Quality Assurance