On 9 February 2011, reports suggested that NYSE Euronext and Deutsche Börse were in advanced talks about an all-stock merger. Deutsche Börse was in advanced talks to buy NYSE Euronext in a deal that would create the world's largest trading powerhouse. The shares of both companies were temporarily frozen on the news due to the risk of large price movements and clarifications of the deal. A successful deal would see the new company becoming the world's largest stock exchange operator with a market capitalisation of listed companies equal to US$15 trillion, US$13.39 trillion of which is part of the much larger NYSE Euronext, which is approximately six times the size of Deutsche Börse.