A Saudi investor walks past a screen at the newly opened exchange market department at the National Commercial  Bank (NCB) in Riyadh on November 12, 2014. NCB shares surged 10 percent in their first day of trading after the kingdom's largest public offering.  It raised $6 billion and was oversubscribed 23 times. AFP PHOTO/FAYEZ NURELDINE        (Photo credit should read FAYEZ NURELDINE/AFP/Getty Images)