Deutsche Boerse is abandoning pursuit of Euronext as regulatory scrutiny and technological change cut into potential profit, sources say. "The attractiveness of the shares-trading business has massively diminished," a high-ranking Deutsche Boerse manager said. Meanwhile, Nasdaq OMX Group CEO Robert Greifeld says his firm might be interested in acquiring Euronext. "We would have to take a look at it," he said. "I'm not saying we would bid on it, but we would have to take a look."