The dark pool business owned by Nyfix, recently acquired by NYSE Euronext, was on Monday set to be divided up as the US-based business was snapped up by BNY ConvergEx and the European unit was set to be absorbed into SmartPool, NYSE Euronext’s European dark pool.

In August, NYSE Euronext agreed to pay acquire publicly listed Nyfix in a deal that valued the technology company at $144m and at a 95 per cent premium to its then stock price.