So how exactly will this merger change the way we do business today? It seems that companies listed on the respected exchanges will only be restricted to local government/finance laws in each country. John Thain, who would head NYSE Euronext, intends to use the combination to form the world's first global stock market, with continuous trading of stocks and derivatives over a 21-hour time span. So does this mean the we will be able to trade 21/7 on the NYSE?