CNBC 快讯 7月7日 10:00 亿万富翁 John Arnold 斥资 260 万美元研究在线体育博彩风险 Billionaire John Arnold commits $2.6 million to study online sports betting risk John Arnold, who runs Arnold Ventures with his wife, Laura, is investing $2.6 million for university research into poten… FG 100 读报告 →