ALBAWABA – Kingdom Holding Co. bought Saudi billionaire Prince Alwaleed bin Talal’s $450 million stake in Citigroup Inc., according to a Saudi stock market filing on Wednesday, reported by Bloomberg. Kingdom Holdings’ stake in the Wall Street firm are up to 2.2 percent, after acquiring Alwaleed’s shares, from 1.63 percent, according to Bloomberg. Notably, Alwaleed is one of the highest profile Saudi investors, having acquired stakes in Citigroup and Apple ...