Exxon Mobil Corp. XOM 0.80% says the time has come to turn capturing carbon emissions into a real business, as it faces pressure from activists to become a greener company. That represents an about-face for…

A tech-market boom has yielded huge gains for China’s Tencent Holdings Ltd. TCEHY -1.52% , which has invested in hundreds of up-and-coming businesses and is now sitting on a portfolio worth roughly a quarter of…