Supply chain technology vendors GT Nexus, TradeCard merge to form unique end-to-end offering. By Eric Johnson Back before the dot-com bubble burst, the global private equity firm Warburg Pincus invested in two start-up technology companies that a decade later would come to shape the way global trade is managed and financed. Those two companies, in a way, came full circle in early January, when the software-as-a-service supply chain vendors GT Nexus and TradeCard announced a merger...