Leading investment firm Blackstone has acquired media and data company International Data Group (IDG) for $1.3 billion. : Leading investment firm Blackstone has acquired media and data company International Data Group (IDG) for $1.3 billion. Private equity funds managed by Blackstone entered into a definitive agreement to acquire IDG from Oriental Rainbow, a subsidiary of China Oceanwide Holdings Group. "The high-quality data, analytics, and insights IDG delivers to technology leaders are only becoming more critical as the pace of growth and innovation accelerates," said Peter Wallace, Global Head of Core Private Equity at Blackstone.