Bloomberg: Saudi Arabian billionaire Prince Alwaleed Bin Talal’s Kingdom Holding Co. has agreed to sell its almost 30 percent stake in Saudi Research and Marketing Group at nearly double the market value. The unidentified buyer will purchase 23.92 million shares, or 29.9 percent of the publishing group. Kingdom Holding sold most of its stake in News Corp. in February. The company and Alwaleed have built a combined stake in Twitter of more than 5 percent.